CN210290785U

CN210290785U - Valve driver with valve position is adjusted

Info

Publication number: CN210290785U
Application number: CN201920870504.7U
Authority: CN
Inventors: 卢烈云; 韩永波
Original assignee: Wuhan Huayi Technology Co ltd
Current assignee: Wuhan Huayi Technology Co ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-04-10
Anticipated expiration: 2029-06-11

Abstract

The utility model discloses a valve driver with valve position adjustment, which is characterized in that an oil cylinder is arranged in a hydraulic valve driver, a rack is arranged on a piston rod of the oil cylinder, then a gear is arranged at the top end of a valve rod, a fixed plate is arranged on the outer side of the gear, contacts are arranged on two sides of the fixed plate, then a first light touch switch and a second light touch switch are arranged on the inner wall of the valve body, the piston rod can be driven to extend and shorten through the work of the oil cylinder, so that the rack on the piston rod moves to drive the gear to rotate, so that the gear rotates to drive the fixed plate to rotate, and when the fixed plate moves to a certain position, the contact on the fixed plate is contacted with the first tact switch and the second tact switch, and then can make a light touch switch and the work of touching the switch No. two for the hydro-cylinder is closed, realizes that the butterfly lamella rotates, thereby can realize the effect that the butterfly valve opened or closed.

Description

Valve driver with valve position is adjusted

Technical Field

The present invention relates to a valve actuator, and more particularly to a valve actuator with a valve position adjusting mechanism.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

Traditional butterfly valve is manual pivoted when using, along with the development of hydraulic valve driver, uses hydraulic valve driver on the butterfly valve, can conveniently drive.

The current hydraulic valve driver can not accurately control the valve because the display value of the valve position indicator is inconsistent with the actual opening degree of the valve plate due to no effective angle adjusting device for the analog quantity control of the valve. Even if the switching value is controlled, the torque of hydraulic drive is large, and hydraulic impact is added, if a valve driver is over-opened or over-closed, the strength of a main shaft is hard to bear, and the valve shaft and a fixing piece are damaged. Meanwhile, due to the deviation of the position of the valve plate, the sealing is insufficient or excessive, and the sealing of the valve is damaged or not tight.

Therefore, the automatic control of the valve is influenced, and even the safe operation of ships and chemical production lines is influenced. Therefore, on the basis of research and development of a hydraulic valve driver for many years, a novel driver capable of adjusting and locking the opening degree of a valve is developed through repeated design, test and improvement.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a valve driver with valve position is adjusted can solve the problem in the background art.

In order to solve the technical problem, the utility model provides a following technical scheme:

a valve driver with valve position adjustment comprises a valve body, a valve rod arranged in the valve body and a butterfly valve fixed at the lower part of the valve rod, wherein a gear is fixed at the outer side of the top end of the valve rod, a hydraulic valve driver is arranged at the upper part of the valve body and comprises an oil cylinder, a piston rod of the oil cylinder is fully distributed with a rack, and the rack on the piston rod is meshed with the gear; a first light touch switch and a second light touch switch are arranged on the inner wall of the valve body and positioned on the outer side of the gear, the first light touch switch and the second light touch switch are arranged at ninety degrees, a fixed plate is fixed on the outer side of the gear, contacts are arranged on the front side and the back side of the fixed plate, and the fixed plate is arranged between the first light touch switch and the second light touch switch; and a valve position indicator and an angle sensor are arranged above the hydraulic valve driver, and a detection head of the angle sensor is arranged on the gear.

Preferably, the first tact switch and the second tact switch are electrically connected with the oil cylinder through data wires.

Preferably, two switch buttons are arranged outside the oil cylinder, and the two switch buttons are respectively a button for controlling the extension of the oil cylinder and a button for controlling the shortening of the oil cylinder.

Preferably, a bushing is fixed on the inner wall of the valve body, and the valve rod is arranged through the bushing.

Preferably, the first tact switch and the second tact switch are both closed switches.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. by arranging the angle sensor and arranging the detection head of the angle sensor on the gear, the rotation angle of the gear can be displayed on the angle sensor, and the rotation angle of the valve rod can be obtained;

2. the oil cylinder is arranged in the hydraulic valve driver, the rack is arranged on the piston rod of the oil cylinder, the gear is arranged at the top end of the valve rod, the fixing plate is arranged on the outer side of the gear, the contacts are arranged on two sides of the fixing plate, the first tact switch and the second tact switch are arranged on the inner wall of the valve body, the piston rod can be driven to extend and shorten through the work of the oil cylinder, so that the rack on the piston rod moves to drive the gear to rotate, the gear rotates to drive the fixing plate to rotate, when the fixing plate moves to a certain position, the contacts on the fixing plate are contacted with the first tact switch and the second tact switch, the first tact switch and the second tact switch can work, the oil cylinder is closed, the rotation of a butterfly valve is realized, and the effect of opening or closing a butterfly valve can be realized;

3. the angle of the first light touch switch and the angle of the second light touch switch are 90 degrees, so that the angle of the gear can be 90 degrees, the rotating angle of the valve rod can be 90 degrees, and the butterfly valve can be opened to the maximum degree.

Drawings

FIG. 1 is an overall block diagram of a valve actuator with valve position adjustment according to the present invention;

fig. 2 is a block diagram of a hydraulic valve actuator having a valve position-regulated valve actuator according to the present invention.

Wherein: 1. a valve body; 2. a butterfly flap; 3. a valve stem; 4. a hydraulic valve driver; 5. a valve position indicator; 6. an angle sensor; 7. an oil cylinder; 8. a rack; 9. a gear; 10. a first tact switch; 11. a second tact switch; 12. and (7) fixing the plate.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Referring to fig. 1-2, a valve driver with valve position adjustment includes a valve body 1, a valve rod 3 disposed inside the valve body 1, and a butterfly valve 2 fixed to a lower portion of the valve rod 3, a gear 9 is fixed to an outer side of a top end of the valve rod 3, a hydraulic valve driver 4 is disposed on an upper portion of the valve body 1, the hydraulic valve driver 4 includes an oil cylinder 7, a piston rod of the oil cylinder 7 is fully distributed with a rack 8, and the rack 8 on the piston rod is engaged with the gear 9; a first tact switch 10 and a second tact switch 11 are arranged on the outer side of the gear 9 on the inner wall of the valve body 1, the first tact switch 10 and the second tact switch 11 are arranged at ninety degrees, a fixing plate 12 is fixed on the outer side of the gear 9, contacts are arranged on the front side and the back side of the fixing plate 12, and the fixing plate 12 is arranged between the first tact switch 10 and the second tact switch 11; a valve position indicator 5 and an angle sensor 6 are arranged above the hydraulic valve driver 4, and a detection head of the angle sensor 6 is arranged on a gear 9.

The first light touch switch 10 and the second light touch switch 11 are electrically connected with the oil cylinder 7 through data wires.

Two switch buttons are arranged outside the oil cylinder 7, and the two switch buttons are respectively a button for controlling the extension of the oil cylinder 7 and a button for controlling the shortening of the oil cylinder 7.

A bush through which the valve rod 3 is disposed is fixed to an inner wall of the valve body 1.

The first tact switch 10 and the second tact switch 11 are both closed switches.

The working principle is as follows: when the butterfly valve is used, a button for controlling extension of the oil cylinder 7 is opened, a piston rod of the oil cylinder 7 is extended, a rack 8 on the piston rod is moved to drive a gear 9 to rotate, then the gear 9 is rotated to drive a fixing plate 12 to rotate, when the gear 9 rotates to 90 degrees, a contact on the fixing plate 12 is contacted with a tact switch 10, the tact switch 10 works, the oil cylinder 7 is closed, the gear 9 is rotated to drive a valve rod 3 to rotate, the valve rod 3 is rotated to drive a butterfly valve 2 to rotate, the butterfly valve 2 is rotated by 90 degrees, and therefore a channel in the valve body 1 can be opened to the maximum degree. When the butterfly valve need be closed, the button that shortens the control of hydro-cylinder 7 is opened, make the piston rod of hydro-cylinder 7 shorten, rack 8 on the piston rod removes along with it, thereby can drive gear 9 gyration, and then make fixed plate 12 gyration along with it, when gear 9 gyration 90 degrees, gear 9 drives fixed plate 12 gyration 90 degrees along with, thereby can make contact on the fixed plate 12 and No. two dab switch 11 contacts, thereby make No. two dab switch 11 work, make hydro-cylinder 7 close, thereby make gear 9 drive valve rod 3 rotate 90 degrees along with it, and then drive fixed butterfly valve 2 on the valve rod 3 and rotate 90 degrees, make the inside passageway of valve body 1 close.

The embodiments of the present invention are not limited to the above embodiments, and according to the contents of the above embodiments of the present invention, the above preferred embodiments can also make modifications, replacements or combinations of other forms by using conventional technical knowledge and conventional means in the field without departing from the basic technical idea of the present invention, and the obtained other embodiments all fall within the scope of the present invention.

Claims

1. A valve driver with a valve position adjusting function comprises a valve body (1), a valve rod (3) arranged inside the valve body (1) and a butterfly valve (2) fixed to the lower portion of the valve rod (3), and is characterized in that a gear (9) is fixed to the outer side of the top end of the valve rod (3), a hydraulic valve driver (4) is arranged on the upper portion of the valve body (1), the hydraulic valve driver (4) comprises an oil cylinder (7), racks (8) are fully distributed on a piston rod of the oil cylinder (7), and the racks (8) on the piston rod are meshed with the gear (9); a first light touch switch (10) and a second light touch switch (11) are arranged on the inner wall of the valve body (1) and located on the outer side of the gear (9), the first light touch switch (10) and the second light touch switch (11) are arranged at ninety degrees, a fixing plate (12) is fixed on the outer side of the gear (9), contacts are arranged on the front side and the back side of the fixing plate (12), and the fixing plate (12) is arranged between the first light touch switch (10) and the second light touch switch (11); a valve position indicator (5) and an angle sensor (6) are arranged above the hydraulic valve driver (4), and a detection head of the angle sensor (6) is arranged on a gear (9).

2. The valve driver with the valve position regulation function according to claim 1, wherein the first tact switch (10) and the second tact switch (11) are electrically connected with the oil cylinder (7) through data wires.

3. A valve actuator with valve position adjustment according to claim 1, characterized in that two switch buttons are provided outside the cylinder (7), and the two switch buttons are respectively a button for controlling the extension of the cylinder (7) and a button for controlling the shortening of the cylinder (7).

4. A valve actuator with valve position adjustment according to claim 1, characterized in that a bushing is fixed to the inner wall of the valve body (1), through which bushing the valve stem (3) is arranged.

5. The valve actuator with valve position adjustment according to claim 1, wherein the first tact switch (10) and the second tact switch (11) are closed switches.