Three-way pneumatic ball valve with anti-deflection and anti-static functions

Abstract

The utility model relates to the technical field of three-way pneumatic ball valves, in particular to a three-way pneumatic ball valve with anti-deflection and anti-static functions. The anti-deflection valve comprises a valve body, a mounting frame is fixedly connected to the upper end of the valve body, a pneumatic actuator is mounted at the upper end of the mounting frame, a valve rod is rotatably connected to the inner wall of the valve body, a ball is arranged on the inner wall of the valve body, the valve rod is fixed to the ball, and the pneumatic actuator controls the valve rod to rotate. When the ball needs to be prevented from deflecting, before the adjusting ball rotates, the fixing block is completely retracted into the mounting groove through the pulling mechanism, then the pneumatic actuator controls the valve rod to rotate, the adjusting ball rotates by 90 degrees, the pulling mechanism is released after adjustment, and the fixing block is completely inserted into the valve body under the reset of the reset mechanism, so that the ball is fixed. Therefore, the effects of avoiding liquid circulation influence and service life reduction caused by ball deflection are achieved as far as possible.

Description

TECHNICAL FIELD

[0001] The utility model relates to three -way pneumatic ball valve technical field especially three -way pneumatic ball valve with prevent deflection and prevent static electricity function. BACKGROUND

[0002] Three -way pneumatic ball valve is a kind of valve by pneumatic actuator drive ball rotation to realize fluid control, three -way pneumatic ball valve is composed of valve body, valve rod, mounting bracket, pneumatic actuator, mounting plate, ball, in use three -way pneumatic ball valve, valve body is installed by flange, and pipe and mounting plate are fixed, gas source is connected with pneumatic actuator, after pneumatic actuator on mounting bracket receives signal, drives valve rod to rotate, so that ball rotates 90 degrees, to adjust water flow direction, ball and valve seat between valve seat in valve body adopt sealing surface design, ensure no leakage when closing.

[0003] The inventor found that three -way pneumatic ball valve is used in daily work, due to the liquid in the pipeline is in flow state, so that fluid may impact ball and force ball to occur periodic deflection, so not only possibly influence liquid flow, and also can accelerate ball and valve seat wear, to possibly lead to shortened service life. UTILITY MODEL CONTENTS

[0004] The utility model discloses a three -way pneumatic ball valve with prevent deflection and prevent static electricity function, which can prevent the ball from being deflected and static electricity, thereby prolonging the service life of the ball and the valve seat.

[0005] To achieve the above object, the utility model adopts the following technical scheme: three -way pneumatic ball valve with prevent deflection and prevent static electricity function, including valve body, the upper end of valve body is fixedly connected with mounting bracket, the upper end of mounting bracket is installed with pneumatic actuator, the inner wall of valve body is rotatably connected with valve rod, the inner wall of valve body is provided with ball, the valve rod is fixed with ball, the pneumatic actuator controls valve rod rotation, prevent deflection subassembly is arranged between valve body and ball, one end of valve body is fixedly connected with mounting plate, one end of mounting plate is provided with anti-static component, prevent deflection subassembly includes the multiple even distribution's installation slot of being opened in the circular arc surface of ball, the inner wall of installation slot is slidably connected with fixed block, and the fixed block is inserted into valve body.

[0006] The effect achieved by the above components is that: when the ball needs to be prevented from being deflected, the fixed block is completely retracted into the installation groove by pulling the mechanism, then the valve rod is rotated by the pneumatic actuator control valve, the ball is rotated by 90 degrees, the pulling mechanism is released after adjustment, and the fixed block is completely inserted into the valve body under the reset of the reset mechanism, so as to fix the ball, thereby avoiding the influence of liquid flow and reducing the service life caused by the deflection of the ball as much as possible.

[0007] Preferably, the lower end of the fixed block is fixedly connected with a pull rope, the other end of the pull rope is fixedly connected with a sliding ring, one side of the mounting frame is provided with a pneumatic cylinder, and the sliding ring slides on the circular arc surface of the valve rod.

[0008] The effect achieved by the above components is that: the pneumatic cylinder is started by the controller, the sliding ring is lifted upwards by the pneumatic cylinder, the fixed block is pulled by the pull rope, and the fixed block is completely retracted into the installation groove.

[0009] Preferably, the lower end of the fixed block is fixedly connected with a reset spring, and the other end of the reset spring is fixed to the ball.

[0010] The effect achieved by the above components is that: when the pull rope pulls the fixed block, the reset spring is compressed, and after the output end of the pneumatic cylinder is reset, the reset spring is deformed and reset, so that the fixed block is reset.

[0011] Preferably, the pull rope penetrates the ball and the valve rod, and the pneumatic cylinder is located below the sliding ring.

[0012] The effect achieved by the above components is that: the sliding ring is controlled to move by the extension and reset of the output end of the pneumatic cylinder.

[0013] Preferably, the anti-static assembly comprises a connecting block fixedly connected to the left end of the mounting plate, a pressing rod slidably inserted into the right end of the connecting block, a pressing plate fixedly connected to one end of the pressing rod, an anti-static steel ball slidably inserted into the circular arc surface of the valve rod, the anti-static steel ball being inserted into the ball, and an anti-static spring fixedly connected between the anti-static steel ball and the ball.

[0014] The effect achieved by the above components is that: when the three-way pneumatic ball valve needs to prevent static electricity when controlling the flow of flammable liquids such as petroleum, the anti-static spring extrudes the anti-static steel ball by deformation, so that the anti-static steel ball fully contacts the ball, then the worker drags the pressing rod outward, then the connecting piece at one end of the conductive wire on the pipeline is inserted into the connecting block, the connecting piece is fully contacted with the connecting block by the extrusion mechanism, so that the static electricity generated by the three-way pneumatic ball valve flows to the valve rod, then to the valve body, and finally flows into the pipeline, thereby achieving anti-static.

[0015] Preferably, the right end of the pressing plate is fixedly connected with an extrusion spring, and the other end of the extrusion spring is fixed with the connecting block.

[0016] The above components achieve the effect of extruding the pressing plate through deformation of the extrusion spring.

[0017] Preferably, the left end of the pressing plate is fixedly connected with an auxiliary block, the auxiliary block is inserted into the connecting block, and the arc surface of the connecting block is provided with a protrusion.

[0018] The above components achieve the effect of inserting the auxiliary block into the connecting block through the connecting piece after the pressing plate is pressed to the connecting piece, so as to further limit the connecting piece.

[0019] In summary, the utility model has the beneficial effects that:

[0020] In the utility model, when it is necessary to prevent the ball from deviating, the fixing block is completely retracted into the installation groove through the pulling mechanism before the ball is adjusted to rotate, then the valve rod is rotated through the pneumatic actuator control valve, the ball is adjusted to rotate by 90 degrees, the pulling mechanism is released after adjustment, and the fixing block is completely inserted into the valve body under the reset of the reset mechanism, so that the ball is fixed, and the effect of avoiding the influence of liquid circulation and reducing the service life caused by the deviation of the ball is achieved as much as possible, the problem that the liquid in the pipeline is in a flowing state, the fluid may impact the ball and force the ball to deviate periodically, so that the liquid circulation is affected, and the ball and the valve seat are also worn out, so that the service life is shortened is solved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0022] Figure 2 It is a three-dimensional structure schematic diagram of the utility model;

[0023] Figure 3 It is a three-dimensional structure schematic diagram of the utility model Figure 2 It is an enlarged three-dimensional structure schematic diagram of A in the utility model;

[0024] Figure 4 It is a three-dimensional structure schematic diagram of the ball in the utility model;

[0025] Figure 5 It is a three-dimensional structure schematic diagram of the anti-static assembly in the utility model.

[0026] Legend: 1, valve body; 2, anti-deflection assembly; 3, anti-static assembly; 4, mounting plate; 5, mounting bracket; 6, pneumatic actuator; 7, valve stem; 8, ball; 9, anti-static steel ball; 10, anti-static spring; 21, mounting groove; 22, fixed block; 23, return spring; 24, pull rope; 25, slip ring; 26, air cylinder; 31, connecting block; 32, pressing rod; 33, extrusion spring; 34, pressing plate; 35, auxiliary block. DETAILED DESCRIPTION

[0027] Referring to Figure 1 and Figure 2 The utility model provides a technical scheme: three pneumatic ball valves with anti-deflection and anti-static functions include valve body 1, the upper end of valve body 1 is fixedly connected with mounting bracket 5, the upper end of mounting bracket 5 is installed with pneumatic actuator 6, the inner wall of valve body 1 is rotatably connected with valve stem 7, the inner wall of valve body 1 is provided with ball 8, valve stem 7 is fixed with ball 8, pneumatic actuator 6 controls valve stem 7 rotation, anti-deflection assembly 2 is arranged between valve body 1 and ball 8, one end of valve body 1 is fixedly connected with mounting plate 4, and one end of mounting plate 4 is provided with anti-static assembly 3.

[0028] The specific setting and function of anti-deflection assembly 2 and anti-static assembly 3 will be described below.

[0029] Referring to Figure 2 and Figure 3 and Figure 4As shown, in the embodiment: the anti-deflection assembly 2 comprises a plurality of evenly distributed installation grooves 21 opened in the circular arc surface of the ball 8, the inner wall of the installation groove 21 is slidably connected with a fixing block 22, the fixing block 22 is inserted into the valve body 1, by arranging the anti-deflection assembly 2, when it is needed to prevent the ball 8 from deflecting, the fixing block 22 is completely retracted into the installation groove 21 by pulling the mechanism before adjusting the rotation of the ball 8, then the rotation of the valve rod 7 is controlled by the pneumatic actuator 6, the ball 8 is adjusted to rotate 90 degrees, the pulling mechanism is released after adjustment, under the reset of the reset mechanism, the fixing block 22 is completely inserted into the valve body 1, so as to fix the ball 8, and further to avoid the influence of liquid flow and reduce the service life caused by the deflection of the ball 8 as much as possible, the lower end of the fixing block 22 is fixedly connected with a pull rope 24, the other end of the pull rope 24 is fixedly connected with a sliding ring 25, one side of the mounting bracket 5 is provided with a pneumatic cylinder 26, the sliding ring 25 slides on the circular arc surface of the valve rod 7, by the controller, the pneumatic cylinder 26 is started, the sliding ring 25 is lifted by the pneumatic cylinder 26 to go up, the pull rope 24 pulls the fixing block 22, the fixing block 22 is completely retracted into the installation groove 21, the lower end of the fixing block 22 is fixedly connected with a reset spring 23, the other end of the reset spring 23 is fixed with the ball 8, when the pull rope 24 pulls the fixing block 22, the reset spring 23 is compressed, after the output end of the pneumatic cylinder 26 is reset, the reset spring 23 is deformed and reset, so that the fixing block 22 is reset, the pull rope 24 penetrates through the ball 8 and the valve rod 7, the pneumatic cylinder 26 is located below the sliding ring 25, by the extension and reset of the output end of the pneumatic cylinder 26, the sliding ring 25 is controlled to move.

[0030] Referring to Figure 3 and Figure 5As shown, in the present embodiment: the anti-static component 3 comprises a connecting block 31 fixedly connected to the left end of the mounting plate 4, a pressing rod 32 slidingly inserted into the right end of the connecting block 31, a pressing plate 34 fixedly connected to one end of the pressing rod 32, a anti-static steel ball 9 slidingly inserted into the arc surface of the valve rod 7, the anti-static steel ball 9 is inserted into the ball 8, an anti-static spring 10 is fixedly connected between the anti-static steel ball 9 and the ball 8, when the three-way pneumatic ball valve needs to prevent static electricity during controlling the flow of flammable liquids such as petroleum, the anti-static spring 10 extrudes the anti-static steel ball 9 through deformation, so that the anti-static steel ball 9 fully contacts with the ball 8, then the worker drags the pressing rod 32 outward, then inserts the connecting piece at one end of the conductive wire on the pipeline into the connecting block 31, extrudes the pressing plate 34 through the extrusion mechanism, so that the connecting piece fully contacts with the connecting block 31, so that the static electricity generated by the three-way pneumatic ball valve flows to the valve rod 7, then flows to the valve body 1, and finally flows into the pipeline, so as to achieve anti-static effect. The right end of the pressing plate 34 is fixedly connected with an extrusion spring 33, the other end of the extrusion spring 33 is fixedly connected with the connecting block 31, the extrusion spring 33 is deformed to extrude the pressing plate 34, the left end of the pressing plate 34 is fixedly connected with an auxiliary block 35, the auxiliary block 35 is inserted into the connecting block 31, the arc surface of the connecting block 31 is provided with a protrusion, after the connecting piece is inserted into the connecting block 31 and the pressing plate 34 is pressed to the connecting piece, the auxiliary block 35 penetrates through the connecting piece and is inserted into the connecting block 31, so as to further limit the connecting piece.

[0031] Working principle:

[0032] In use three pneumatic ball valve, the valve body 1 is installed through the flange and fixed with the pipeline and the mounting plate 4, the gas source is connected with the pneumatic actuator 6, the pneumatic actuator 6 on the mounting frame 5 (the pneumatic actuator 6 selects the Shanghai era AT) receives the signal, drives the valve stem 7 to rotate, makes the ball 8 rotate 90 degrees, thereby adjusts the water flow direction, the sealing surface design between the ball 8 and the valve seat in the valve body 1 ensures that there is no leakage when closing, when the ball 8 needs to be prevented from deflecting, before adjusting the ball 8 to rotate, through the controller, the cylinder 26 is started, the cylinder 26 lifts the sliding ring 25 to go up, the pull rope 24 pulls the fixed block 22, the fixed block 22 is completely retracted into the mounting groove 21, the reset spring 23 is compressed, then the valve stem 7 is rotated through the pneumatic actuator 6, the ball 8 is adjusted to rotate 90 degrees, after adjustment, the output end of the cylinder 26 is reset, the reset spring 23 is deformed and reset, so that the fixed block 22 is reset, the fixed block 22 is completely inserted into the valve body 1, so that the ball 8 is fixed, and the effect of avoiding the influence of liquid flow and reducing service life caused by the deflection of the ball 8 is achieved as far as possible, when the three-way pneumatic ball valve controls the flow of flammable liquids such as petroleum, the anti-static spring 10 is deformed to extrude the anti-static steel ball 9, so that the anti-static steel ball 9 is in full contact with the ball 8, then the worker drags the pressing rod 32 outward, then the connecting piece at one end of the conductive wire on the pipeline is inserted into the connecting block 31, then the worker loosens the pressing rod 32, the connecting piece is fully contacted with the connecting block 31 by extruding the spring 33 to deform and extruding the pressing plate 34, so that the connecting piece is fully contacted with the connecting block 31, so that the static electricity generated by the three-way pneumatic ball valve flows to the valve stem 7, then flows to the valve body 1 and finally flows into the pipeline, so that the static electricity is prevented, after the connecting piece is inserted into the connecting block 31 and the pressing plate 34 is pressed to the connecting piece, the auxiliary block 35 is inserted into the connecting block 31 through the connecting piece, so that the connecting piece is further limited.

[0033] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments made in accordance with the technical essence of the present application without departing from the technical scheme of the present application still belongs to the protection scope of the present application. In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A three-way pneumatic ball valve with anti-deflection and anti-static functions, comprising a valve body (1), characterized in that: The upper end of the valve body (1) is fixedly connected with a mounting rack (5), the upper end of the mounting rack (5) is provided with a pneumatic actuator (6), the inner wall of the valve body (1) is rotatably connected with a valve rod (7), the inner wall of the valve body (1) is provided with a ball (8), the valve rod (7) is fixed with the ball (8), the pneumatic actuator (6) controls the rotation of the valve rod (7), the valve body (1) and the ball (8) are provided with a deflection prevention assembly (2), one end of the valve body (1) is fixedly connected with a mounting plate (4), one end of the mounting plate (4) is provided with an anti-static assembly (3), the deflection prevention assembly (2) comprises a plurality of evenly distributed mounting grooves (21) opened in the circular arc surface of the ball (8), the inner wall of the mounting groove (21) is slidably connected with a fixed block (22), the fixed block (22) is inserted into the valve body (1).

2. The three-way pneumatic ball valve with anti-deflection and anti-static functions according to claim 1, characterized in that: The lower end of the fixed block (22) is fixedly connected with a pull rope (24), the other end of the pull rope (24) is fixedly connected with a sliding ring (25), one side of the mounting rack (5) is provided with a pneumatic cylinder (26), the sliding ring (25) slides on the circular arc surface of the valve rod (7).

3. The three-way pneumatic ball valve with anti-deflection and anti-static functions according to claim 2, characterized in that: The lower end of the fixed block (22) is fixedly connected with a reset spring (23), the other end of the reset spring (23) is fixed with the ball (8).

4. The three-way pneumatic ball valve with anti-deflection and anti-static functions according to claim 3, characterized in that: The pull rope (24) penetrates the ball (8) and the valve rod (7), and the pneumatic cylinder (26) is located below the sliding ring (25).

5. The three-way pneumatic ball valve with anti-deflection and anti-static functions according to claim 4, characterized in that: The anti-static assembly (3) comprises a connecting block (31) fixedly connected to the left end of the mounting plate (4), a pressing rod (32) slidably inserted into the right end of the connecting block (31), a pressing plate (34) fixedly connected to one end of the pressing rod (32), an anti-static steel ball (9) slidably inserted into the circular arc surface of the valve rod (7), the anti-static steel ball (9) is inserted into the ball (8), and an anti-static spring (10) is fixedly connected between the anti-static steel ball (9) and the ball (8).

6. The three-way pneumatic ball valve with anti-deflection and anti-static functions according to claim 5, characterized in that: The right end of the pressing plate (34) is fixedly connected with an extrusion spring (33), and the other end of the extrusion spring (33) is fixed with the connecting block (31).

7. The three-way pneumatic ball valve with anti-deflection and anti-static functions according to claim 6, characterized in that: The left end of the pressing plate (34) is fixedly connected with an auxiliary block (35), the auxiliary block (35) is inserted into the connecting block (31), and the circular arc surface of the connecting block (31) is provided with a protrusion.

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