Butterfly valve for water supply and drainage pipeline

Abstract

The utility model relates to the technical field of butterfly valves, and discloses a butterfly valve for a water supply and drainage pipeline, which comprises a valve body, a control box is fixedly arranged at the upper end of the valve body, a control handle is arranged on one side of the control box, a driving rod is arranged in the valve body, and a closing plate is fixedly arranged at the rear end of the driving rod. An anti-mistaken-rotation structure is arranged between the control handle and the control box and comprises a fixing plate fixedly arranged on one side of the control box, a fixing rod is fixedly arranged on one side of the fixing plate, a plurality of locking holes are formed in one side of the control handle, a spring is fixedly arranged on the inner wall of the fixing rod, and a pulling plate is fixedly arranged on one side of the spring. And a locking rod is fixedly arranged on one side of the pulling plate. According to the butterfly valve for the water supply and drainage pipeline, the situation that the valve body is opened due to the fact that the control handle is touched by mistake can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field, concretely is butterfly valve for water supply and drainage pipeline. BACKGROUND

[0002] In the drainage pipeline system, the butterfly valve is widely used in controlling the flow direction, flow and pressure as a commonly used regulating and cutting device. The main advantages of the butterfly valve are compact structure, simple operation, good sealing and rapid response, which are suitable for large-diameter pipeline and fluid control occasions.

[0003] The patent with the publication number CN217874224U proposes a dust gas butterfly valve. The device can be disassembled on the rotating shaft by two half gate plates. When replacing the gate plate, the rotating shaft does not need to be removed and the gate plate can be replaced. When one half gate plate is damaged, the other half gate plate can be replaced separately, which reduces the cost and facilitates disassembly and installation.

[0004] However, the handle of the butterfly valve lacks a locking structure between the handle and the valve body after rotating to close the valve body, which may cause the handle to rotate the valve body to open by mistake, and cannot guarantee the stability of the closed valve body. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a butterfly valve for water supply and drainage pipeline to solve the problem that the handle and the valve body of the existing butterfly valve lack a locking structure, which may cause the handle to rotate the valve body to open by mistake and cannot guarantee the stability of the closed valve body.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a butterfly valve for water supply and drainage pipeline, comprising a valve body, a control box fixedly arranged at the upper end of the valve body, a control handle arranged on one side of the control box, a drive rod arranged inside the valve body, a closing plate fixedly arranged at the rear end of the drive rod, a mistaken rotation prevention structure arranged between the control handle and the control box, the mistaken rotation prevention structure comprising a fixed plate fixedly arranged on one side of the control box, a fixed rod fixedly arranged on one side of the fixed plate, a plurality of locking holes opened on one side of the control handle, a spring fixedly arranged on the inner wall of the fixed rod, a catch plate fixedly arranged on one side of the spring, and a locking rod fixedly arranged on one side of the catch plate.

[0007] Preferably, a bolt is fixedly arranged at the front end of the closing plate, a reserved hole is opened in the drive rod at the front end of the bolt, and the bolt passes through the reserved hole and is externally threaded with a nut.

[0008] Preferably, a sealing ring is fixedly arranged on the outer wall of the closing plate, and the outer wall of the sealing ring is in contact with the inner wall of the valve body.

[0009] Preferably, a planar groove is opened at the rear end of the drive rod, and the front end surface of the closing plate is in contact with the planar groove.

[0010] Preferably, the outer wall of the valve body is fixedly provided with a plurality of mounting members at the front and rear ends.

[0011] Preferably, the upper end of the trigger plate is rectangular in shape.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1) By setting the anti-misoperation structure, the operator can realize the purpose of automatically locking the control handle after rotating the handle to close the closing plate, avoiding the opening of the valve body due to accidental touch, and better ensuring the stability of the closing plate after closing.

[0014] 2) By setting the flat groove and the bolt, the stability of the closing plate and the rear end of the driving rod can be ensured, avoiding the shaking between the closing plate and the driving rod. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective structural schematic view of a butterfly valve for water supply and drainage pipelines in the embodiment of the utility model;

[0016] Figure 2 It is a sectional view structural schematic view of the valve body in the embodiment of the utility model;

[0017] Figure 3 It is Figure 2 It is an enlarged structural schematic view of position A in the embodiment of the utility model;

[0018] Figure 4 It is a split structural schematic view of the closing plate and the driving rod in the embodiment of the utility model.

[0019] In the figure: 1, valve body; 2, control box; 3, control handle; 4, driving rod; 5, closing plate; 6, anti-misoperation structure; 7, fixed plate; 8, locking hole; 9, fixed rod; 10, spring; 11, trigger plate; 12, locking rod; 13, bolt; 14, reserved hole; 15, nut; 16, mounting member. DETAILED DESCRIPTION

[0020] 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 other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Embodiment one

[0022] Combined Figures 1-4The utility model provides a butterfly valve for water supply and drainage pipeline, including the valve body 1, the upper end fixed setting of valve body 1 is provided with the control box 2, one side of control box 2 is provided with control handle 3, the inside of valve body 1 is provided with drive rod 4, the rear end fixed setting of drive rod 4 is provided with closing plate 5, and the control handle 3 is provided with anti -misoperation structure 6 between control box 2, and anti -misoperation structure 6 includes the fixed plate 7 of one side fixed setting of control box 2, the fixed rod 9 of one side fixed setting of fixed plate 7, the lock hole 8 of one side of control handle 3 is opened with multiple, the inner wall fixed setting of fixed rod 9 is provided with spring 10, and the one side fixed setting of spring 10 is provided with catch plate 11, and the one side fixed setting of catch plate 11 is provided with lock rod 12.

[0023] Refer to Figure 1 And Figure 4 Further, the outer wall of the closing plate 5 is fixedly provided with a sealing ring, the outer wall of the sealing ring is in contact with the inner wall of the valve body 1, the rear end of the drive rod 4 is provided with a planar groove, the front end surface of the closing plate 5 is in contact with the planar groove, and the outer wall of the valve body 1 is fixedly provided with a plurality of mounting pieces 16 at the front end and the rear end.

[0024] Specifically, the sealing ring ensures that the outer wall of the closing plate 5 is tightly attached to the inner wall of the valve body 1, the planar groove facilitates the stable installation of the closing plate 5, and the mounting pieces 16 facilitate the connection of the valve body 1 with other pipelines.

[0025] Embodiment two

[0026] Refer to Figure 4 And on the basis of embodiment one, further, the front end of the closing plate 5 is fixedly provided with a bolt 13, the inside of the drive rod 4 located at the front end of the bolt 13 is provided with a reserved hole 14, the bolt 13 passes through the reserved hole 14 and is externally threadedly provided with a nut 15.

[0027] Specifically, the bolt 13 passes through the reserved hole 14 and cooperates with the nut 15 to fixedly connect the closing plate 5 with the drive rod 4.

[0028] In actual operation, after rotating the control handle 3 to drive the drive rod 4 to rotate, the sealing ring on the outer wall of the closing plate 5 is in contact with the inner wall of the valve body 1, the valve body 1 is closed, after closing, the lock rod 12 enters the corresponding lock hole 8 due to the reset of the spring 10, the control handle 3 is locked, and accidental contact of the control handle 3 is avoided.

[0029] When it is necessary to install the closing plate 5, the closing plate 5 is clamped into the planar groove, the bolt 13 passes through the reserved hole 14, the nut 15 is threadedly sleeved on the outer wall of the bolt 13, and the closing plate 5 and the drive rod 4 are tightly installed.

[0030] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments can be changed, modified, replaced and varied in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve for sewer pipes, comprising a valve body (1), characterized in that: The upper end of the valve body (1) is fixedly provided with an operation box (2), one side of the operation box (2) is provided with an operation handle (3), the inside of the valve body (1) is provided with a driving rod (4), the rear end of the driving rod (4) is fixedly provided with a closing plate (5), a mistaken rotation prevention structure (6) is arranged between the operation handle (3) and the operation box (2), the mistaken rotation prevention structure (6) comprises a fixed plate (7) fixedly arranged on one side of the operation box (2), a fixed rod (9) fixedly arranged on one side of the fixed plate (7), a plurality of locking holes (8) are formed in one side of the operation handle (3), a spring (10) is fixedly arranged on the inner wall of the fixed rod (9), a catch plate (11) is fixedly arranged on one side of the spring (10), and a locking rod (12) is fixedly arranged on one side of the catch plate (11).

2. The butterfly valve for a sewer pipe according to claim 1, characterized in that: The front end of the closing plate (5) is fixedly provided with a bolt (13), a reserved hole (14) is formed in the inside of the driving rod (4) located at the front end of the bolt (13), the bolt (13) penetrates through the reserved hole (14) and is threadedly provided with a nut (15) on the outer wall.

3. The butterfly valve for a sewer pipe according to claim 2, characterized in that: The outer wall of the closing plate (5) is fixedly provided with a sealing ring, and the outer wall of the sealing ring is in contact with the inner wall of the valve body (1).

4. The butterfly valve for a sewer pipe according to claim 1, characterized in that: The rear end of the driving rod (4) is provided with a planar groove, and the front end surface of the closing plate (5) is in contact with the planar groove.

5. The butterfly valve for a sewer pipe according to claim 1, characterized in that: The outer wall of the valve body (1) is fixedly provided with a plurality of mounting pieces (16) at the front end and the rear end.

6. The butterfly valve for a sewer pipe according to claim 1, characterized by: The upper end of the catch plate (11) is rectangularly arranged through one end of the upper end sliding groove of the fixed rod (9).

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