Pneumatic butterfly valve with quick opening degree adjusting device

Abstract

The utility model provides a pneumatic butterfly valve with a quick opening degree adjusting device, which relates to the field of pneumatic butterfly valves and comprises a butterfly valve body, a support is connected to the upper end of the butterfly valve body, a pneumatic actuator is connected to the upper end of the support, a valve rod is connected to the lower end of the pneumatic actuator, and a valve clack is connected to the lower end of the valve rod. An adjusting assembly is arranged on the inner side of the support and comprises a rotating disc, an adjusting disc, a rotating cylinder and an angle scale which are arranged on the outer side of the valve rod, the rotating disc is fixedly connected with the valve rod in a sleeving mode, meanwhile, the adjusting disc, the rotating cylinder and the angle scale are rotationally arranged on the outer side of the valve rod, and a manual assembly is arranged on the rear side of the support and comprises a driven gear fixed to the outer side of the valve rod. And the outer side of the driven gear is meshed with a driving gear. The utility model has the effect of quickly adjusting the opening degree at a small angle, and also has the effect of emergency manual operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to pneumatic butterfly valve technical field, concretely relates to a kind of pneumatic butterfly valve with quick regulating opening degree device. BACKGROUND

[0002] Pneumatic butterfly valve is by pneumatic actuator and butterfly valve clapper composition pipeline flow on-off control structure, by filling gas in actuator cylinder after making piston movement in cylinder, to drive piston rod movement, piston rod is provided with gear or rack, the gear or rack is engaged with another gear set on the rotating shaft of valve clapper connection, piston rod movement, rotating shaft drives valve clapper rotation, on-off control is carried out to the flow state of pipeline connected with butterfly valve in rotation process, piston rod can also be connected spring to make it recover piston position to initial position after removing air pressure, then valve clapper makes pipeline closed.

[0003] Through the retrieval, prior art (announcement number:CN218468266U), the document records "a kind of pneumatic butterfly valve with opening degree adjusting mechanism, including box, the inside of the box is equipped with limiting mechanism, the upper surface of the box is fixed with pneumatic actuator body, the inside of the box is equipped with conversion mechanism, the lower surface of the pneumatic actuator body is rotatably connected with valve stem body, the lower surface of the box is fixed with pneumatic butterfly valve body, the limiting mechanism includes two fixed blocks fixed in the right side wall of the inner cavity of box, two The sliding connection of the two fixed blocks between the opposite sides of sliding rod, the outer side of the sliding rod is slidably connected with two sliding blocks.The pneumatic butterfly valve with opening degree adjusting mechanism, by rotating handle to adjust the position of movable sleeve, the sliding connection between two sliding blocks and sliding rod makes movable sleeve can move horizontally, two limiting blocks after adjustment can limit the activity board, solve the problem that traditional pneumatic butterfly valve body can only be opened and closed at large angle."

[0004] Pneumatic butterfly valve with opening degree adjusting mechanism in prior art although realized the effect of small-angle adjustment, but still there are some deficiencies: the existing pneumatic butterfly valve with opening degree adjusting mechanism needs manual operation limiting mechanism when adjusting angle, respectively adjusts the position of two limiting blocks, and cannot determine the rotation angle of valve clapper after adjustment, secondly, by pneumatic actuator as driving power source, when gas supply system fails, need to manually disassemble execution structure device, then drive execution mechanism by tool, it is quite troublesome. UTILITY MODEL CONTENTS

[0005] To overcome the defects existing in prior art, a kind of pneumatic butterfly valve with quick regulating opening degree device is provided to solve the problems proposed in the above background art.

[0006] In order to achieve the above object, a kind of pneumatic butterfly valve with quick adjustment opening degree device is provided, comprising: butterfly valve body, the upper end of the butterfly valve body is connected with support, and the upper end of support is connected with pneumatic actuator, and the lower end of pneumatic actuator is connected with valve stem, while the lower end of valve stem is connected with valve flap, adjusting assembly is equipped in the inboard of support, and adjusting assembly includes rotating disc, adjusting disc, rotating drum and angle disc equipped in the outside of valve stem, and rotating disc is fixedly sleeved with valve stem, while adjusting disc, rotating drum and angle disc are rotatably equipped in the outside of valve stem, manual assembly is equipped in the back of support, and manual assembly includes driven gear fixed in the outside of valve stem, and driving gear is engaged in the outside of driven gear.

[0007] Further, photoelectric sensor is equipped between the rotating disc and adjusting disc, and photoelectric sensor includes emitter installed in the lower end surface of rotating disc, and receiver installed in the upper end surface of adjusting disc.

[0008] Further, annular groove is opened in the outer edge of adjusting disc, and sliding block is slidably connected in the inboard of annular groove, ball is arranged on the surface of sliding block, and sliding block is fixedly connected with support by fixed rod on the outer end.

[0009] Further, rotating drum is fixed in the lower side of adjusting disc by connecting rod, and pointer is installed in the lower end surface of adjusting disc.

[0010] Further, angle disc is fixed on the shell of butterfly valve body by support rod on the lower side, and angle disc is located in the lower side of pointer and rotating drum.

[0011] Further, driving gear is internally installed with handle rotating shaft, and the upper end of handle rotating shaft is connected with shaft plate, and shaft plate is fixed in the top end of support.

[0012] Further, controller is installed in the outside of support, and photoelectric sensor is electrically connected with pneumatic actuator by controller.

[0013] The beneficial effects of the utility model lie in:

[0014] 1, by rotating drum included in adjusting assembly, in the valve flap closed state, by manually rotating rotating drum, so as to drive adjusting disc to rotate, and then drive pointer to move, and the angle of rotation can be determined by angle disc, at this time, open pneumatic actuator again, when pneumatic actuator drives valve stem to rotate, and then drives rotating disc to rotate, by the signal docking of emitter and receiver included in photoelectric sensor, the action of pneumatic actuator can be stopped, at this time, valve stem rotates the angle of adjusting disc rotation, realize small angle adjustment, and the effect of quick adjustment is realized.

[0015] 2. When the gas supply system fails, first of all, the gas source and power supply are closed, then the air valve is vented, and then the rotating shaft of the handle is rotated through the manual assembly, so that the valve rod is rotated through the meshing transmission of the driving gear and the driven gear during the manual rotation of the rotating shaft of the handle, and the position of the transmitter and the receiver is observed manually, so that convenient manual adjustment operation is realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of an embodiment of the utility model.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of an adjusting assembly of an embodiment of the utility model.

[0018] Figure 3 It is a structure schematic diagram of an embodiment of the utility model. Figure 1 It is a structure schematic diagram of an embodiment of the utility model.

[0019] Figure 4 It is a side view structural schematic diagram of an embodiment of the utility model.

[0020] In the figure: 1, butterfly valve body; 11, support; 12, valve rod; 13, pneumatic actuator; 14, controller; 15, valve flap; 2, adjusting assembly; 21, rotating disc; 22, photoelectric sensor; 23, transmitter; 24, receiver; 25, adjusting disc; 26, ring groove; 261, fixed rod; 262, sliding block; 263, ball; 27, pointer; 28, rotating drum; 29, angle disc; 3, manual assembly; 31, shaft plate; 32, handle rotating shaft; 33, driving gear; 34, driven gear. DETAILED DESCRIPTION

[0021] Referring to Figures 1 to 4 The utility model provides a kind of pneumatic butterfly valve with quick regulation opening degree device, it includes: butterfly valve body 1, support 11 is connected to butterfly valve body 1 upper end, and support 11 upper end is connected with pneumatic actuator 13, and pneumatic actuator 13 lower end is connected with valve rod 12, while the lower end of valve rod 12 is connected with valve flap 15, adjusting assembly 2 is located in the inboard of support 11, and adjusting assembly 2 includes rotating disc 21, adjusting disc 25, rotating drum 28 and angle disc 29 located on the outside of valve rod 12, and rotating disc 21 is fixedly sleeved with valve rod 12, while adjusting disc 25, rotating drum 28 and angle disc 29 are rotatably arranged on the outside of valve rod 12, support 11 rear side is equipped with manual assembly 3, and manual assembly 3 includes driven gear 34 fixed on the outside of valve rod 12, and driven gear 34 outside is engaged with driving gear 33, driving gear 33 is internally provided with handle rotating shaft 32, and the upper end of handle rotating shaft 32 is connected with shaft plate 31, and shaft plate 31 is fixed on the top end of support 11.

[0022] In the embodiment, the butterfly valve body 1, the adjusting assembly 2 and the manual assembly 3 constitute the main structure of the pneumatic butterfly valve with the quick adjusting opening degree device.

[0023] The butterfly valve body 1 comprises a valve body shell, and the valve disc 15 is rotationally connected to the inner wall of the shell, and the bracket 11 is fixed to the upper end of the shell.

[0024] Specifically, the pneumatic actuator 13 is connected with a gas source.

[0025] Specifically, the adjusting disc 25, the rotating drum 28 and the angle disc 29 are all annular structures, and the inner ring holes are not in contact with the valve rod 12.

[0026] As shown in Figure 1 , Figure 2 and Figure 3 , the photoelectric sensor 22 is arranged between the rotating disc 21 and the adjusting disc 25, and the photoelectric sensor 22 comprises the emitter 23 arranged on the lower end surface of the rotating disc 21 and the receiver 24 arranged on the upper end surface of the adjusting disc 25, the outer edge of the adjusting disc 25 is provided with the ring groove 26, the inner side of the ring groove 26 is slidingly connected with the sliding block 262, the surface of the sliding block 262 is provided with the magnetic ball 263, and the outer end of the sliding block 262 is fixedly connected with the bracket 11 through the fixing rod 261. The rotating drum 28 is fixed to the lower side of the adjusting disc 25 through a connecting rod, the pointer 27 is arranged on the lower end surface of the adjusting disc 25, the angle disc 29 is fixed to the shell of the butterfly valve body 1 through a supporting rod, and the angle disc 29 is located below the pointer 27 and the rotating drum 28. The controller 14 is arranged on the outer side of the bracket 11, and the photoelectric sensor 22 is electrically connected with the pneumatic actuator 13 through the controller 14.

[0027] Specifically, the emitter 23 and the receiver 24 are in the upper and lower positions in the initial state, at which time the connection power supply is not connected (not in the power-on state), and the valve disc 15 is in the closed state. Then, the position of the emitter 23 and the receiver 24 is adjusted by the rotating drum 28 to be offset by a certain angle, at which time the photoelectric sensor 22 is powered on, and then the pneumatic actuator 13 stops running when the valve disc 15 is opened to the adjusted angle, that is, the signals of the emitter 23 and the receiver 24 are connected.

[0028] It should be noted that the control mode of the embodiment is controlled by the controller 14 (PLC can be selected here), and the control circuit of the controller 14 can be realized by simple programming of those skilled in the art, and the power supply also belongs to the common knowledge in the art.

[0029] Specifically, the inner side groove wall of the ring groove 26 is provided with a T-shaped limiting sliding groove, and the sliding block 262 is slidingly connected in the limiting sliding groove, and the magnetic ball 263 is arranged.

[0030] As a preferred embodiment, the fixed rod 261 and the sliding block 262 are arranged to realize the stable support of the adjusting disc 25, and the magnetic ball 263 is arranged to realize the adsorption and fixing effect of the adjusting disc 25, so that the adjusting disc 25 can keep stable after rotation.

[0031] In use, the rotating drum is manually rotated to drive the adjusting disc to rotate, and the pointer is driven to move, and the angle of rotation can be determined through the angle disc. Then, the pneumatic actuator is started, and when the pneumatic actuator drives the valve rod to rotate and further drives the rotating disc to rotate, the action of the pneumatic actuator is stopped through the signal docking of the transmitter and the receiver included in the photoelectric sensor. At this time, the valve rod is rotated by the angle of rotation of the adjusting disc. When the gas supply system fails, the gas source and the power supply are first closed, and then the air valve is vented. Then, the handle rotating shaft included in the manual assembly is manually rotated, and the valve rod is driven to rotate through the meshing transmission of the driving gear and the driven gear. The position of the transmitter and the receiver is observed to realize the convenient manual adjustment operation.

[0032] The pneumatic butterfly valve with the quick opening degree adjusting device can effectively solve the problems in the background art, and has the small-angle quick opening degree adjusting effect and the emergency manual operation effect on the basis of the existing pneumatic butterfly valve with the quick opening degree adjusting device.

Claims

1. A pneumatic butterfly valve with a quick-adjusting opening device, comprising: The butterfly valve body (1) is characterized in that: the upper end of the butterfly valve body (1) is connected with a support (11), the upper end of the support (11) is connected with a pneumatic actuator (13), the lower end of the pneumatic actuator (13) is connected with a valve rod (12), the lower end of the valve rod (12) is connected with a valve disc (15), the inner side of the support (11) is provided with an adjusting assembly (2), the adjusting assembly (2) comprises a rotating disc (21) arranged on the outer side of the valve rod (12), an adjusting disc (25), a rotating barrel (28) and an angle disc (29), the rotating disc (21) is fixedly sleeved with the valve rod (12), the adjusting disc (25), the rotating barrel (28) and the angle disc (29) are arranged on the outer side of the valve rod (12) and rotate, the rear side of the support (11) is provided with a manual assembly (3), the manual assembly (3) comprises a driven gear (34) fixed on the outer side of the valve rod (12), and the outer side of the driven gear (34) is engaged with a driving gear (33).

2. The pneumatic butterfly valve with quick adjustment opening degree device according to claim 1, characterized in that, The rotating disc (21) and the adjusting disc (25) are provided with a photoelectric sensor (22), and the photoelectric sensor (22) comprises a transmitter (23) arranged on the lower end face of the rotating disc (21), and a receiver (24) arranged on the upper end face of the adjusting disc (25).

3. The pneumatic butterfly valve with quick adjustment opening degree device according to claim 1, characterized in that, The outer edge of the adjusting disc (25) is provided with an annular groove (26), and the inner side of the annular groove (26) is slidably connected with a sliding block (262), the surface of the sliding block (262) is provided with a plurality of ball bearings (263), and the outer end of the sliding block (262) is fixedly connected with the support (11) through a fixed rod (261).

4. The pneumatic butterfly valve with quick adjustment opening degree device according to claim 1, characterized in that, The rotating barrel (28) is fixed to the lower side of the adjusting disc (25) through a connecting rod, and a pointer (27) is arranged on the lower end face of the adjusting disc (25).

5. The pneumatic butterfly valve with quick adjustment opening degree device according to claim 1, characterized in that, The lower side of the angle disc (29) is fixed to the outer shell of the butterfly valve body (1) through a supporting rod, and the angle disc (29) is located below the pointer (27) and the rotating barrel (28).

6. The pneumatic butterfly valve with quick adjustment opening degree device according to claim 1, characterized in that, The inside of the driving gear (33) is provided with a handle rotating shaft (32), the upper end of the handle rotating shaft (32) is connected with a shaft plate (31), and the shaft plate (31) is fixed to the top end of the support (11).

7. The pneumatic butterfly valve with quick adjustment opening degree device according to claim 1, characterized in that, The outer side of the support (11) is provided with a controller (14), and the photoelectric sensor (22) is electrically connected with the pneumatic actuator (13) through the controller (14).

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