CN113048286A

CN113048286A - Positioning device of intelligent valve positioner

Info

Publication number: CN113048286A
Application number: CN202110485832.7A
Authority: CN
Inventors: 宋良永
Original assignee: Wenzhou Polytechnic
Current assignee: Wenzhou Polytechnic
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-06-29

Abstract

The invention discloses a positioning device of an intelligent valve positioner, which comprises a fixed shell, an inner gear ring, a driving gear, a motor, a lifting adjusting mechanism, a connecting frame and a locking mechanism, wherein the inner gear ring is pivoted on the inner wall of the fixed shell, a positioning driven gear is pivoted on a partition plate of the fixed shell, the lifting adjusting mechanism is arranged at the top of the fixed shell, the motor is fixedly connected with a lifting block of the lifting adjusting mechanism, the driving gear is fixedly connected with the motor, the driving gear is always engaged with the positioning driven gear, a potentiometer fixedly arranged in a cavity of the positioning driven gear is electrically connected with a circuit board arranged in the fixed shell, the connecting frame is arranged at the bottom of the inner gear ring in an axial sliding manner, the adjusting driven gear is arranged on the connecting frame, the driving gear is engaged with a gear ring body of the inner gear ring after rising, the driving gear is engaged with the adjusting driven gear after falling, the locking, the locking mechanism is used for fixedly connecting the valve rod and the connecting frame into a whole. The invention has convenient use and wide applicability.

Description

Positioning device of intelligent valve positioner

Technical Field

The invention relates to the technical field of intelligent valve positioners, in particular to a positioning device of an intelligent valve positioner.

Background

With the progress of industrial technology, an automatic control process becomes a main development trend, an intelligent valve occupies an extremely important position in industrial production, a valve positioner is a core component of the intelligent valve, a common positioning structure of the valve positioner is a mechanical structure or a pneumatic pilot structure, the mechanical structure drives a transmission mechanism to act through a control signal, so that an adjusting valve acts, the displacement of a valve rod is fed back to the valve positioner through a mechanical device, and the valve position condition is transmitted to an upper system through an electric signal to measure the opening degree of the valve; the pneumatic pilot structure controls the flow of compressed air by a small valve and then pushes a large valve by compressed air so as to realize the flow control of a controlled medium, the idea of hierarchical control is realized by applying a piezoelectric valve, but the existing positioner only can control the opening and closing degree of a valve of a needle valve or a ball valve, and the pneumatic pilot structure cannot be adjusted randomly according to the use requirement in the use process and is inconvenient to use.

Disclosure of Invention

In view of the above, the present invention provides a positioning device of an intelligent valve positioner to solve the above technical problems.

In order to achieve the purpose, the invention provides the following technical scheme:

a positioning device of an intelligent valve positioner comprises a fixed shell, and further comprises an inner gear ring, a driving gear, a motor, a lifting adjusting mechanism, a connecting frame and a locking mechanism, wherein the inner gear ring is pivoted on the inner wall of the fixed shell, a positioning driven gear is pivoted on a partition plate of the fixed shell, the lifting adjusting mechanism is arranged at the top of the fixed shell, the motor is fixedly connected with a lifting block of the lifting adjusting mechanism, the driving gear is fixedly connected with the motor, the driving gear is always meshed with the positioning driven gear, a potentiometer fixedly arranged in a cavity of the positioning driven gear is electrically connected with a circuit board arranged in the fixed shell, the connecting frame is axially and slidably arranged at the bottom of the inner gear ring, the connecting frame is provided with an adjusting driven gear, and the driving gear is meshed with a gear ring body of the inner gear ring after rising, the driving gear is meshed with the adjusting driven gear after descending, the locking mechanism is arranged on the connecting frame and is used for fixedly connecting the valve rod and the connecting frame into a whole.

Furthermore, a plurality of guide posts are arranged on the bottom surface of the inner gear ring, and guide holes corresponding to the guide posts are arranged on the top surface of the connecting frame.

Furthermore, the bottom of the inner gear ring is connected with a limiting cover shell, the boss of the connecting frame penetrates through the avoiding hole in the bottom of the limiting cover shell and protrudes outwards, and the first spring sleeved on the boss is limited between the limiting cover shell and the connecting frame.

Further, be equipped with the angle adjustment board that can rotation regulation on the bottom surface of boss, locking mechanical system sets up on the bottom surface of angle adjustment board.

Furthermore, the lifting adjusting mechanism comprises a nut sleeve fixedly connected with the motor, a screw rod pivoted on the fixed shell and a guide sleeve fixedly arranged on the inner wall of the fixed shell, the screw rod is in threaded fit with the nut sleeve, the nut sleeve is in sliding fit with the guide sleeve, and the screw rod is connected with the adjusting motor.

Furthermore, the locking mechanism comprises two sub-mechanisms which are oppositely arranged, each sub-mechanism comprises a fixed shell which is fixedly connected with the angle adjusting plate, a lock head which is arranged in the fixed shell in a sliding mode and a locking bolt which is connected to the fixed shell in a threaded mode, the locking bolt abuts against the rear end face of the lock head, the lock head can penetrate through the fixed shell and is connected with a lock groove which is arranged on the valve rod in a locking mode, and a second spring which drives the lock head to retreat is arranged between the lock head and the fixed shell.

Furthermore, the number of teeth of the inner gear ring is greater than that of the driving gear, the number of teeth of the driving gear is greater than that of the adjusting driven gear, and the number of teeth of the positioning driven gear is greater than that of the driving gear.

Further, the control panel is arranged on the top surface of the fixed shell, and a switch control button and a function program button are arranged on the control panel.

The technical scheme can show that the invention has the advantages that: the connecting frame can do lifting movement, so that the valve body lifting mechanism can be suitable for two valve bodies, namely a ball valve and a needle valve, is convenient to use and has wide applicability; because the driving gear rises and meshes with the ring gear body of ring gear, the driving gear descends and meshes with adjusting driven gear, therefore can adjust the drive ratio, and then can carry out quick adjustment according to the valve of difference, make and adjust the positioning efficiency high.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the lock mechanism of the present invention.

List of reference numerals: the device comprises a fixed shell 1, an inner gear ring 2, a gear ring body 21, a limiting cover 22, a driving gear 3, a motor 4, a lifting adjusting mechanism 5, a screw rod 51, a nut sleeve 52, a guide sleeve 53, a positioning driven gear 6, a potentiometer 7, a connecting frame 8, a boss 81, an adjusting driven gear 82, an angle adjusting plate 83, a first spring 9, a circuit board 10, a control panel 11, a locking mechanism 12, a fixed shell 121, a lock head 122, a locking bolt 123 and a second spring 124.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and 2, the positioning device of the intelligent valve positioner shown in fig. 1 comprises a fixing shell 1, an inner gear ring 2, a driving gear 3, a motor 4, a lifting adjusting mechanism 5, a connecting frame 8 and a locking mechanism 12, wherein the fixing shell 1 is fixedly mounted to realize the mounting of the positioning device during use, an annular flange is arranged on the outer peripheral surface of the inner gear ring 2, the annular flange is matched with an annular groove on the inner wall of the fixing shell 1 to enable the inner gear ring 2 to be pivoted on the inner wall of the fixing shell 1, a positioning driven gear 6 is pivoted on a partition plate of the fixing shell 1, the lifting adjusting mechanism 5 is arranged at the top of the fixing shell 1, the motor 4 is fixedly connected with a lifting block of the lifting adjusting mechanism 5, and the driving gear 3 is fixedly connected with the motor 4, the driving gear 3 is always engaged with the positioning driven gear 6, a potentiometer 7 fixedly arranged in a cavity of the positioning driven gear 6 is electrically connected with a circuit board 10 arranged in the fixed shell 1, the circuit board 10 is positioned above the partition board, the circuit board 10 is electrically connected with the motor 4, the connecting frame 8 is arranged at the bottom of the inner gear ring 2 along the axial sliding direction, an adjusting driven gear 82 is arranged on the connecting frame 8, the driving gear 3 is engaged with a gear ring body 21 of the inner gear ring 2 after rising, the driving gear 3 is engaged with the adjusting driven gear 82 after falling, the locking mechanism 12 is arranged on the connecting frame 8, the locking mechanism 12 is used for fixedly connecting the valve rod and the connecting frame 8 into a whole, the arrangement of the locking mechanism 12 is convenient for the application to be fixedly connected with the valve rod, the driving gear 3 is engaged with the gear ring body 21 or the adjusting driven gear 82, through adjustment drive ratio, and then can carry out quick adjustment according to the valve of difference, make and adjust the location efficient, when control flap is the ball valve, because the rotatory 90 of valve rod of ball valve can open completely, therefore use driving gear 3 with ring gear body 21 meshes, makes the ball valve is opened the process and is slow, avoids opening suddenly or closes the life that makes the too big influence valve of impact, when control flap is the needle valve, needs the rotatory several rings of valve rod just can realize opening or closing of valve, therefore utilizes driving gear 3 meshes with regulation driven gear 82, can quick adjustment, and makes potentiometre 7 is convenient for respond to.

Preferably, the number of teeth of the ring gear 2 is greater than the number of teeth of the driving gear 3, the number of teeth of the driving gear 3 is greater than the number of teeth of the adjusting driven gear 82, and the number of teeth of the positioning driven gear 6 is greater than the number of teeth of the driving gear 3.

This application is still including setting up the control panel 11 of 1 top surface of set casing, switch control button, functional program button and flow data display screen have on control panel 11, control panel 11 is convenient for manual control this application whether need work or according to the manual selection function of valve type.

The bottom surface of the inner gear ring 2 is provided with a plurality of guide posts, the top surface of the connecting frame 8 is provided with guide holes corresponding to the guide posts, so that the connecting frame 8 is arranged at the bottom of the inner gear ring 2 in an axial sliding manner, and the connecting frame 8 can conveniently perform lifting motion to adapt to valves of different types.

The bottom of ring gear 2 is connected with a spacing housing 22, the boss 81 of link 8 passes and is located the hole of dodging of spacing housing 22 bottom is outwards salient, and the cover is established first spring 9 on the boss 81 is injectd spacing housing 22 with between the link 8, the setting of first spring 9, make when link 8 is free state link 8 with the laminating of ring gear 2, the accurate control of being convenient for the mounted position of set casing 1, because the initial position of link 8 is stable, can make the accommodation process precision high, the setting of spacing housing 22 is avoided link 8 easily drops.

Be equipped with angle adjusting plate 83 that can rotation regulation on the bottom surface of boss 81, locking mechanical system 12 sets up on angle adjusting plate 83's the bottom surface, wherein, be equipped with a plurality of arc walls on the angle adjusting plate 83, mounting screw pass corresponding arc wall with boss 81 fixed connection.

The lifting adjusting mechanism 5 comprises a nut sleeve 52 fixedly connected with the motor 4, a screw rod 51 pivoted on the fixed shell 1 and a guide sleeve 53 fixedly arranged on the inner wall of the fixed shell 1, the screw rod 51 is in threaded fit with the nut sleeve 52, the nut sleeve 52 is in sliding fit with the guide sleeve 53, the screw rod 51 is connected with an adjusting motor, the adjusting motor is electrically connected with the potentiometer 7, a contact switch is arranged on a partition plate of the fixed shell 1, the contact switch and the motor 4 are respectively opened when in contact or non-contact, and the opening degree of the valve is measured through the resistance change of the potentiometer 7.

The locking mechanism 12 includes two sub-mechanisms arranged oppositely, the sub-mechanisms include a fixed shell 121 fixedly connected with the angle adjusting plate 83, a lock head 122 arranged in the fixed shell 121 in a sliding manner, and a locking bolt 123 connected to the fixed shell 121 in a threaded manner, the locking bolt 123 abuts against the rear end face of the lock head 122, the lock head 122 can pass through the fixed shell 121 and be connected with a lock groove on the valve rod in a locking manner, a second spring 124 for driving the lock head 122 to retreat is arranged between the lock head 122 and the fixed shell 121, and the lock head 122 locks or releases the valve rod by rotating the locking bolt 123 to advance or retreat, so that the positioner is convenient to disassemble and assemble, and can be matched with a plurality of valves for use, and is convenient to use.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A positioning device for an intelligent valve positioner, comprising a fixed shell (1), characterized in that it also includes an inner gear (2), a driving gear (3), a motor (4), a lifting adjustment mechanism (5), A connecting frame (8) and a locking mechanism (12), the inner gear (2) is pivotally connected to the inner wall of the fixed casing (1), and the positioning driven gear (6) is pivotally connected to the fixed casing (1), the lifting adjustment mechanism (5) is arranged on the top of the fixed shell (1), the motor (4) is fixedly connected with the lifting block of the lifting adjustment mechanism (5), so The driving gear (3) is fixedly connected with the motor (4), the driving gear (3) is always meshed with the positioning driven gear (6), and is fixedly arranged in the empty position of the positioning driven gear (6). The potentiometer (7) in the cavity is electrically connected to the circuit board (10) arranged in the fixed shell (1), and the connecting frame (8) is axially slidably arranged at the bottom of the inner gear (2) , the connecting frame (8) is provided with an adjusting driven gear (82), the driving gear (3) meshes with the ring gear body (21) of the inner gear (2) after rising, and the driving gear ( 3) After descending, it engages with the adjusting driven gear (82), the locking mechanism (12) is arranged on the connecting frame (8), and the locking mechanism (12) is used to connect the valve stem with the The frame (8) is fixedly connected as a whole.

2. The positioning device for an intelligent valve positioner according to claim 1, characterized in that, the bottom surface of the inner gear ring (2) is provided with a plurality of guide posts, and the top surface of the connecting frame (8) is provided with a plurality of guide posts. guide holes corresponding to the guide posts.

3 . The positioning device of the intelligent valve positioner according to claim 1 , wherein a limit cover ( 22 ) is connected to the bottom of the inner gear ring ( 2 ), and the convex part of the connecting frame ( 8 ) is connected to the bottom of the inner gear ring ( 2 ). 4 . The platform (81) protrudes outward through the avoidance hole at the bottom of the limit cover (22), and the first spring (9) sleeved on the boss (81) is limited to the limit cover between the shell (22) and the connecting frame (8).

4. The positioning device for an intelligent valve positioner according to claim 1, characterized in that, an angle adjustment plate (83) that can be rotated and adjusted is provided on the bottom surface of the boss (81), and the locking mechanism (12) ) is arranged on the bottom surface of the angle adjustment plate (83).

5 . The positioning device for an intelligent valve positioner according to claim 1 , wherein the lifting adjustment mechanism ( 5 ) comprises a nut sleeve ( 52 ) fixedly connected with the motor ( 4 ), pivotally connected to the The lead screw (51) on the fixed shell (1) and the guide sleeve (53) fixed on the inner wall of the fixed shell (1), the lead screw (51) is threadedly matched with the nut sleeve (52) , and the nut sleeve (52) is slidingly matched with the guide sleeve (53), and the screw rod (51) is connected with the adjusting motor.

6. The positioning device of an intelligent valve positioner according to claim 4, characterized in that, the locking mechanism (12) comprises two sub-mechanisms arranged opposite to each other, and the sub-mechanisms comprise a ) a fixed shell (121) fixedly connected, a lock head (122) slidably arranged in the fixed shell (121), and a locking bolt (123) threaded on the fixed shell (121), the locking bolt (123) abuts on the rear end surface of the lock head (122), the lock head (122) can pass through the fixing shell (121) and be connected with the lock groove on the valve rod, and the lock head (122) A second spring (124) is arranged between the lock head (122) and the fixed shell (121) to drive the lock head (122) to retreat.

7. The positioning device for an intelligent valve positioner according to claim 1, wherein the number of teeth of the inner gear ring (2) is greater than the number of teeth of the driving gear (3), and the number of teeth of the driving gear (3) The number of teeth is greater than the number of teeth of the adjusting driven gear (82), and the number of teeth of the positioning driven gear (6) is greater than the number of teeth of the driving gear (3).

8. The positioning device for an intelligent valve positioner according to claim 1, further comprising a control panel (11) disposed on the top surface of the fixed shell (1), the control panel (11) having Switch control buttons and function program buttons.