CN218455007U

CN218455007U - Zero indicator of valve

Info

Publication number: CN218455007U
Application number: CN202220991867.8U
Authority: CN
Inventors: 赵佰华; 孙金涛; 孙泽通; 孙哲; 孙万春; 孙启水; 郭涛; 孙涛; 孙志鹏; 陈曦; 穆星政
Original assignee: Boshan Water-Pump Manufacturing Factory
Current assignee: Boshan Water-Pump Manufacturing Factory
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2023-02-07
Anticipated expiration: 2032-04-27

Abstract

A zero-position indicating device of a valve belongs to the technical field of zero-position indicating device structures of valves. The zero-position indicating device of the valve needs to accurately control the closing position of the flashboard, and ensures that the valve closing action is accurate and in place each time, the prior art generally adopts a servo motor, the requirements on maintenance and use environments are high, and the use cost is high; the screw rod is arranged in the valve shell and penetrates through the center of the transmission nut, the transmission nut is in threaded connection with the screw rod, one side of the screw rod is connected with the trigger plate, and the position, corresponding to the trigger plate, of the inner wall of the valve shell is provided with a detection switch; the transmission nut is rotatably arranged in the valve shell and is connected with the driving device. Utilize the lead screw to drive trigger plate and trigger detection switch, and then realize that control drive arrangement opens and stops, do not need servo motor also can realize accurate control gate valve, greatly reduced the manufacturing cost of valve.

Description

Zero indicator of valve

Technical Field

A zero-position indicating device of a valve belongs to the technical field of zero-position indicating device structures of valves.

Background

The zero position indicating device of the valve is widely applied to valve switch control of a gas, liquid and powder material conveying pipeline. The driving structure of the existing electric gate valve generally comprises a lead screw and a motor, the lower end of the lead screw is fixedly connected with the gate valve, and the motor rotates to drive the lead screw to lift, so that the gate at the lower end of the lead screw is opened and closed up and down.

The zero-position indicating device of the valve needs to accurately control the closing position of the flashboard, ensures that the valve closing action is accurately in place every time, and avoids the flashboard or a pipeline from being extruded and damaged, therefore, the prior art generally adopts a servo motor, so that the moving distance of a lead screw is accurate to a wire, however, the servo motor is expensive, the requirements on maintenance and use environment are high, the use cost is high, and the manufacturing cost of the valve is greatly increased.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: the zero-position indicating device overcomes the defects of the prior art, can realize the accurate opening and closing control valve without a servo motor and has low manufacturing cost.

The utility model provides a technical scheme that its technical problem adopted is: a zero position indicating device for a valve, comprising: comprises a valve shell, a screw rod, a trigger plate, a detection switch, a transmission nut and a driving device; the screw rod is arranged in the valve shell and penetrates through the center of the transmission nut, the transmission nut is in threaded connection with the screw rod, the screw rod is connected with the trigger plate, and the position, corresponding to the trigger plate, of the inner wall of the valve shell is provided with a detection switch; the transmission nut is relatively fixed with the valve shell and is connected with the driving device.

The flashboard is connected to lead screw bottom, rotate drive nut through drive arrangement, the lead screw rises or descends under the screw thread effect, realize that drive arrangement drives the flashboard and rises or descend, the switch of valve promptly, wherein, when the flashboard needs to be closed, lead screw and flashboard descend to required position after, the lead screw top drives triggers the board and also descends to the trigger position, trigger detection switch, and then detection switch closes drive arrangement, realize drive arrangement automatic stop, avoid the excessive decline of lead screw to damage pipeline or flashboard, accurate control, can adopt multiple different drive arrangement, break away from the servo motor restriction, greatly reduced valve manufacturing cost, moreover, the steam generator is simple in structure, the maintenance use cost is low.

In addition, the indication of the valve switch state is realized, the switch condition of the valve can be known by observing the position relation between the trigger plate and the detection switch by an operator, the pipeline state is convenient to judge, and the zero position indication of the valve is realized.

Preferably, the driving device comprises a motor, and an output shaft of the motor is rotatably connected with the transmission nut.

The common motor is used for driving the transmission nut through transmission, so that the manufacturing cost is low.

Preferably, the driving device further comprises a driving bevel gear and a driven bevel gear, the output shaft of the motor is fixedly connected with the driving bevel gear, the driven bevel gear is fixedly connected with the transmission nut, and the driving bevel gear is meshed with the driven bevel gear.

Realize that ordinary motor installs in the side of valve casing, to the drive of lead screw drive wheel, can let the motor avoid the valve casing directly over regional, conveniently set up trigger plate and detection switch to installation, maintenance to whole valve are more convenient.

Preferably, still include the bearing frame of fixed connection valve casing, the bearing frame setting is in drive nut below, and drive nut passes through the bearing frame relatively fixed in the valve casing.

The screw rod driving wheel is installed through the bearing seat, and the rotation performance and the stability of the screw rod driving wheel can be guaranteed simultaneously.

Preferably, the top of the screw rod is provided with a stand column, and the stand column trigger plate is fixedly connected to one side of the stand column.

The stand of fixed connection improves the position of trigger plate, and then improves detection switch's mounted position, and the installation and the maintenance of being convenient for increase the inside vacant space of valve casing simultaneously, increase the removal space of lead screw.

Preferably, still include the stand connecting plate, the fixed plate, rotate the connecting rod and rotate the trigger plate, the one end of lead screw top sliding connection stand connecting plate, the rotation connecting rod passes the other end of stand connecting plate, the one end of fixed plate and the one end of rotating the trigger plate in proper order, rotates the connecting rod perpendicular to lead screw, fixed plate other end fixed connection valve casing inner wall, rotate trigger plate and stand connecting plate all with rotation connecting rod fixed connection.

The mode that the trigger plate is installed from the side face of the lead screw is provided, the trigger plate is triggered by lifting instead of rotating, on one hand, the space right above a part of the lead screw can be made to be convenient to install and maintain, on the other hand, the side extrusion force on the lead screw can be reduced, the lead screw is prevented from deforming when the trigger plate is subjected to the side pressure of the detection switch, the service life of the zero position indicating device of the valve is greatly prolonged, and the maintenance cost is reduced.

Further preferably, the rotating trigger plate and the upright post connecting plate form an included angle, and the free end of the rotating trigger plate is higher than that of the upright post connecting plate.

Through the contained angle, reduce the free end height of stand connecting plate, can reduce the required length of lead screw top and stand connecting plate free end connection, reduce the required length of lead screw or its top stand, make the detection switch mounted position more be close valve casing open-top simultaneously, easy to assemble overhauls, saves the valve casing inner space.

Further preferably, a column slide block is arranged on one side of the top of the lead screw, a corresponding slide groove is arranged on the column connecting plate, the column slide block is arranged in the slide groove, and the slide groove is arranged on the column connecting plate along the connecting line direction of the lead screw and the rotating connecting rod.

When the lead screw rises or descends to open or close the flashboard, the upright post sliding block correspondingly slides in the sliding groove, and the top of the lead screw drives the free end of the upright post connecting plate to rise or descend.

Further preferably, a zero position indicating device is arranged at one end of the rotating connecting rod.

Further preferably, the zero position indicating device is arranged outside the valve casing, and the corresponding position of the outer wall of the valve casing is provided with an indicating mark.

Utilize the characteristic that rotates the connecting rod and rotate the linkage of trigger plate, when rotating the connecting rod rotation, zero indicator and rotation trigger plate all can synchronous rotation, and zero indicator can reflect the position that rotates the trigger plate promptly, has just also reflected the zero-position condition of valve, and the reaction condition is more clear, and the observation of being more convenient for instructs more accurately, convenient to use.

Preferably, the detection switch is a proximity switch.

Compared with the prior art, the utility model discloses the beneficial effect who has is: the indication of the valve switch state is realized, the switch condition of the valve can be known by observing the position relation between the trigger plate and the detection switch by an operator, the pipeline state is convenient to judge, and the zero position indication of the valve is realized. Utilize the lead screw to drive trigger plate and trigger detection switch, and then realize that control drive arrangement opens and stops, do not need servo motor also can realize accurate control gate valve, greatly reduced the manufacturing cost of valve to simple structure, simple to operate uses the maintenance cost low.

Drawings

FIG. 1 is a schematic view of a zero position indicating device of the valve according to embodiment 1.

FIG. 2 is a top view of the zero indicator device of the valve of embodiment 1.

FIG. 3 is a top view of the zero indicator device of the valve of embodiment 2.

FIG. 4 is a schematic diagram of a trigger plate structure of the zero indicator device of the valve of embodiment 2.

FIG. 5 is a schematic view showing the indicating structure of the zero indicating device of the valve according to embodiment 2.

Wherein, 1, valve casing; 2. a driven bevel gear; 3. a column; 4. a drive bevel gear; 5. lifting the trigger plate; 6. a proximity switch; 7. a motor; 8. a lead screw; 9. a bearing seat; 10. a drive nut; 11. a shutter plate; 12. a fixing plate; 13. rotating the connecting rod; 14. rotating the trigger plate; 15. a column connecting plate; 16. a column slide block; 17. a chute.

Detailed Description

The present invention will be further explained with reference to fig. 1~5, and fig. 3~5 is a preferred embodiment of the present invention.

Example 1

Referring to the attached FIG. 1~2: a zero-position indicating device of a valve comprises a valve casing 1, a lead screw 8, a driven bevel gear 2, an upright post 3, a driving bevel gear 4, a lifting trigger plate 5, a proximity switch 6, a motor 7, a bearing seat 9, a transmission nut 10 and a flashboard 11. The vertical setting of lead screw 8 is in

valve casing

1, and 8 bottom fixed connection flashboards 11 of lead screw. 8 upper ends of lead screws pass through drive nut 10 and driven bevel gear 2 center in proper order, and

lead screws

8 and 10 threaded connection of drive nut, 8 and driven bevel gear 2 sliding connection of lead screws, drive nut 10 and the relative fixed connection of driven

bevel gear

2, 10 bottoms of drive nut still are equipped with bearing frame 9, and lead screws 8 pass bearing frame 9, and drive nut 10 passes through bearing frame 9 and installs in valve casing 1. The vertical stand 3 that is equipped with in 8 tops of lead screw, 3 top one sides of stand are equipped with lift trigger plate 5, and the position that 1 inner wall of valve casing corresponds lift trigger plate 5 is equipped with proximity switch 6.

Motor 7 fixed mounting is at 1 outer wall of valve casing, and the output shaft passes valve casing 1 and connects drive bevel gear 4, and drive bevel gear 4 meshes with driven bevel gear 2, and proximity switch 6 connects motor 7.

During installation, the gate plate 11 is arranged in the pipeline, and the valve casing 1 main body is positioned above the pipeline. When needing 7 control flashboards 11 of motor to descend in order to close the pipeline route, motor 7 rotates, and driven bevel gear 2 drives drive nut 10 and rotates, and the lead screw descends gradually under the screw drive, and flashboard 11 falls gradually, and the lift to the top triggers board 5 and reachs proximity switch 6's trigger region, and proximity switch 6 triggers, and control motor 7 closes, and flashboard 11 descends to closing the pipeline route just this moment, accomplishes once accurate valve of closing.

Example 2

Referring to the attached FIG. 3~5: a zero position indicating device of a valve is characterized in that on the basis of embodiment 1, a lifting trigger plate 5 is not arranged at the top of an upright post 3, but an upright post sliding block 16 is arranged on one side of the top of the upright post 3; the inner wall of the valve shell 1 is provided with a fixed plate 12, a rotating connecting rod 13, an upright post connecting plate 15 and a rotating trigger plate 14; fixed plate 12 one end fixed connection is at 1 inner wall of valve casing, rotates the other end that connecting rod 13 passed fixed plate 12 to rotate with fixed plate 12 and be connected, rotate connecting rod 13 perpendicular to stand 3, rotate connecting rod 13 one end fixed connection and rotate trigger plate 14, other end fixed connection stand connecting plate 15, rotate trigger plate 14 and stand connecting plate 15 and become certain contained angle and all perpendicular to and rotate connecting rod 13.

The stand connecting plate 15 is close to the one end side of stand 3 and is equipped with spout 17, and spout 17 is along the length direction of stand connecting plate 15, and the free end of stand slider 16 slides and sets up in spout 17, when realizing the oscilaltion of stand 3, drives stand connecting plate 15 and rotation and triggers the rotation that board 14 used rotation connecting rod 13 as the axle with rotating. The proximity switch 6 is arranged on the inner wall of the valve housing 1 and corresponds to the position of the free end of the rotating trigger plate 14.

The one end setting that rotation connecting rod 13 is close to proximity switch 6 is formed at the outside of valve casing 1 and is instructed the structure, and the position sign that corresponds instruction structure on the 1 outer wall of valve casing has the instruction characters, through the passive rotation that rotates connecting rod 13, can reflect the rotation instruction different positions of instructing the structure, realizes the state to the present switch of operating personnel feedback, and it is more convenient to use.

In addition, the motor 7 is rotationally connected with the driven bevel gear 2 through a worm gear.

When the valve needs to be closed, the motor 7 is started, under the same principle as that of the embodiment 1, the lead screw 8 drives the stand column 3 to descend, the stand column sliding block 16 descends and slides in the sliding groove 17 to drive the free end of the stand column connecting plate 15 to descend, meanwhile, the free end of the rotating trigger plate 14 rotates to descend, and the approach switch 6 is triggered to close the motor 7, so that the flashboard 11 is closed in place and stopped, and one-time accurate valve closing action of the accurate electric flashboard valve is realized.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A zero position indicating device for a valve, comprising: comprises a valve shell (1), a lead screw (8), a trigger plate, a detection switch, a transmission nut (10) and a driving device; the lead screw (8) is arranged in the valve shell (1) and penetrates through the center of the transmission nut (10), the transmission nut (10) is in threaded connection with the lead screw (8), the lead screw (8) is connected with the trigger plate, and the position of the inner wall of the valve shell (1) corresponding to the trigger plate is provided with a detection switch; the transmission nut (10) is rotatably arranged in the valve shell (1), and the transmission nut (10) is connected with a driving device.

2. The valve zero indicating device of claim 1, wherein: the device is characterized by further comprising a bearing seat (9) fixedly connected with the valve casing (1), wherein the bearing seat (9) is arranged below the transmission nut (10), and the transmission nut (10) is relatively fixed in the valve casing (1) through the bearing seat (9).

3. The valve zero indicating device of claim 1, wherein: the top of the screw rod (8) is provided with an upright post (3), and the trigger plate is fixedly connected to one side of the upright post (3).

4. The valve zero indicating device of claim 1, wherein: still include stand connecting plate (15), fixed plate (12) and rotation connecting rod (13), the one end of lead screw (8) top sliding connection stand connecting plate (15), the other end that stand connecting plate (15) were passed in proper order in rotation connecting rod (13), the one end of fixed plate (12) and the one end of rotation trigger plate (14), rotation connecting rod (13) perpendicular to lead screw (8), fixed plate (12) other end fixed connection valve casing (1) inner wall, it all with rotation connecting rod (13) fixed connection to rotate trigger plate (14) and stand connecting plate (15).

5. The valve zero indicating device of claim 4, wherein: the automatic lifting device is characterized in that an upright column sliding block (16) is arranged on one side of the top of the lead screw (8), a corresponding sliding groove (17) is formed in the upright column connecting plate (15), the upright column sliding block (16) is arranged in the sliding groove (17), and the sliding groove (17) is formed in the upright column connecting plate (15) along the connecting line direction of the lead screw (8) and the rotating connecting rod (13).

6. The valve zero indicating device of claim 4, wherein: and a zero position indicating device is arranged at one end of the rotating connecting rod (13).

7. The valve zero indicating device of claim 6, wherein: the zero position indicating device is arranged outside the valve casing (1), and indicating marks are arranged at corresponding positions on the outer wall of the valve casing (1).

8. The valve zero indicating device of claim 1, wherein: the detection switch is a proximity switch.