CN213332641U

CN213332641U - Displacement prevention type valve actuator

Info

Publication number: CN213332641U
Application number: CN202021743118.0U
Authority: CN
Inventors: 邱定海
Original assignee: Shanghai Lidea Solenoid Valve Co ltd
Current assignee: Shanghai Lidea Solenoid Valve Co ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-06-01
Anticipated expiration: 2030-08-19

Abstract

The utility model discloses an anti-displacement valve actuator, which comprises a shell and a locking mechanism, wherein the shell is internally provided with an installation cavity, one end of the installation cavity is closed, the other end of the installation cavity is provided with an opening, the opening is clamped with a pipeline, the locking mechanism comprises a first bracket, a second bracket, a screw rod, a first locking piece and a spring, the first bracket is positioned at one side of the second bracket, which is far away from the opening, the screw rod is screwed on the first bracket, the first locking piece comprises a first locking part, a sliding rod and a butt plate, the first locking part and the butt plate are respectively connected at two ends of the sliding rod, the sliding rod is slidably connected on the second bracket, the butt plate is positioned between the first bracket and the second bracket, the spring is arranged between the butt plate and the second bracket, the first locking part is used for being matched with the pipeline, effectively prevent the displacement of valve executor, and then avoid valve executor to become invalid.

Description

Displacement prevention type valve actuator

Technical Field

The utility model relates to the technical field of valves, especially, relate to a prevent displacement formula valve actuator.

Background

The actuator is an essential component of an automatic control system, and is used for receiving a control signal sent by a controller and changing the size of a controlled medium so as to maintain a controlled variable at a required value or within a certain range. The valve can be matched with a valve for use and is used for controlling the opening and closing of the valve.

For example, patent No. CN201420394828.5, entitled electro-hydraulic valve actuator, discloses a pump opened by a controller on an inlet channel to communicate an oil storage chamber and a pressure chamber, and fluid medium in the oil storage chamber flows into the pressure chamber through the pump, so that a pressure cylinder produces a stroke to control a valve rod, and then a valve rod control valve clack moves down to communicate the valve, and when the valve is electrically adjusted and controlled, the valve actuator controls the valve to open the pump

When the bypass valve on the pump control outlet channel is closed by the controller, the communication between the oil storage cavity and the pressure cavity is realized, fluid medium flows back to the oil storage cavity from the pressure cavity under the action of the reset spring, and then the valve rod is controlled to drive the valve clack to move upwards to realize the closing of the valve. When the actuator is assembled with the valve, the housing of the actuator is mounted on the valve body of the valve, and the pressure cylinder is connected with the valve rod. However, the actuator is liable to be loosened after installation, resulting in poor performance.

SUMMERY OF THE UTILITY MODEL

The utility model provides a prevent displacement formula valve actuator has overcome prior art's difficulty, has created a prevent displacement formula valve actuator.

The utility model provides an anti-displacement valve actuator, which comprises a shell and a locking mechanism, wherein the shell is internally provided with an installation cavity, one end of the installation cavity is closed, the other end of the installation cavity is provided with an opening, the opening is clamped with a pipeline for connecting a valve, the locking mechanism comprises a first bracket, a second bracket, a screw rod, a first locking piece and a spring, the first bracket, the second bracket, the screw rod, the first locking piece and the spring are arranged in the installation cavity, the first bracket is positioned at one side of the second bracket, which is far away from the opening, the screw rod is screwed on the first bracket, the first locking piece comprises a first locking part, a sliding rod and a butt plate, the first locking part and the butt plate are respectively connected with two ends of the sliding rod, the sliding rod is slidably connected on the second bracket, the butt plate is positioned between the first bracket and the second bracket, the spring is arranged between the abutting plate and the second support, and the first locking portion is used for being matched with the pipeline.

Further, the first support comprises a first support plate, a second support plate and a third support plate, the third support plate is connected to the first support plate through the second support plate, the third support plate is located on one side, away from the second support, of the first support plate, the first support plate is fixed inside the shell, and the first support plate and the third support plate are respectively provided with a threaded hole matched with the screw rod.

Further, the second support plate is annular.

Furthermore, the number of the second support plates is two, and the second support plates are respectively arranged on two sides of the third support plate.

Further, the screw rod and the sliding rod are coaxially arranged.

Further, the end part of the screw rod matched with the abutting plate is in threaded connection with a nut.

Further, a cushion pad is arranged on the end face, matched with the pipeline, of the first locking portion.

Further, the number of the springs is multiple, and the springs are arranged at intervals around the axis of the sliding rod.

Further, a concave portion is arranged on one side, facing the screw rod, of the sliding rod.

Further, still include the second retaining member, second retaining member one end with the shell is articulated, the other end with the shell lock joint.

Due to the adoption of the technology, the utility model has the advantages of it is following:

the shell is provided with an upper opening which is clamped on the pipeline, the first locking part is locked on the pipeline by moving the first locking part downwards by rotating the screw rod so as to overcome the elastic force of the spring, the operation is convenient, the valve actuator is effectively prevented from displacing, and the failure of the valve actuator is avoided.

The present invention will be further described with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural view of the displacement prevention type valve actuator of the present invention;

fig. 2 is a schematic structural diagram of the locking mechanism of the present invention;

fig. 3 is a schematic structural diagram of the abutting plate of the present invention.

Detailed Description

As shown in fig. 1, the valve 200 includes a valve body 210, a valve rod 220 and a valve flap, two ends of the valve body 210 are respectively connected with a first pipeline 300 and a second pipeline 400, the valve rod 220 is connected with an anti-displacement valve actuator 100, the valve rod 200 is controlled by the valve actuator 100 to drive the valve flap to move up and down, so as to open and close the valve 200, and when the valve 200 is opened, fluid in the first pipeline 300 can flow to the second pipeline 400 through the valve 200.

As shown in fig. 1 and fig. 2, the displacement-preventing valve actuator 100 includes a housing 110, a mounting cavity 111 is provided in the housing 110, one end of the mounting cavity 111 is a closed 1111, and the other end is an opening 1112, the opening 1112 can be provided with a first pipe 300 and/or a second pipe 400 in a clamping manner, so as to prevent the valve actuator 100 mounted on the valve rod 220 from being displaced, and further avoid affecting the execution effect of the valve actuator 100.

As shown in fig. 2, the displacement prevention valve actuator 100 further comprises a locking mechanism 120, the locking mechanism 120 comprising a first bracket 121, a second bracket 122, a threaded rod 123, a first locking member 124 and a spring 125, the first bracket 121, the second bracket 122, the screw 123, the first locking member 124 and the spring 125 can be installed in the installation cavity 111, specifically, the first bracket 121 is located on a side of the second bracket 122 facing away from the opening 112, the screw 123 is screwed on the first bracket 121, the first locking member 124 includes a first locking portion 1241, a sliding rod 1242 and an abutment plate 1243, the first locking portion 1241 and the abutment plate 1243 are respectively connected to two ends of the sliding rod 1242, the sliding rod 1242 is slidably connected to the second bracket 122, the abutment plate 1243 is located between the first bracket 121 and the second bracket 122, the spring 125 is arranged between the abutment plate 1243 and the second bracket 122, and the first locking portion 1241 is used for being matched with the first pipe 300 and/or the second pipe 400.

When the displacement-preventing valve actuator 100 is assembled, the opening 1112 is firstly clamped on the first pipe 300 and/or the second pipe 400, then the pressure cylinder of the valve actuator 100 is connected with the valve rod 220, then the screw 123 is moved downwards and abutted against the abutting plate 1243 by rotating the screw 123, and in the process of continuously moving downwards the screw 123, the first locking member 124 overcomes the elastic force of the spring 125 to move downwards so as to lock the first locking portion 1241 on the first pipe 300 and/or the second pipe 400, so that the mounting stability of the valve actuator 100 on the valve 200 is further improved, and the displacement of the valve actuator 100 caused by the operation is effectively prevented.

As shown in fig. 2, the first locking portion 1241 has a semi-circular shape so that it can be fitted into a pipe having a circular shape. Further, be provided with the blotter on first locking portion 1241 and the pipeline complex terminal surface, when effectively preventing first locking portion 1241 and pipeline cooperation, the problem of crushing the pipeline appears. The buffer pad can be made of rubber or sponge and the like.

When the pipe is clamped in the opening 1112, the sliding rod 1242 passes through the center of the pipe, and the first locking part 1241 is symmetrically arranged along the axis of the sliding rod 1242, so that the first locking member 124 applies force to the pipe uniformly.

Second support 122 accessible fastener is fixed inside housing 110, the fastener includes screw or bolt etc., second support 122 can be the plate body structure, be provided with trepanning 1221 on it, slide bar 1242 can be inserted and is established with trepanning 1221 inside, in order to realize sliding connection between them, first locking portion 1241 and butt plate 1243 are located the both sides of second support 122 respectively this moment, wherein butt plate 1243 can with slide bar 1242 integrated into one piece structure, first locking portion 1241 can be dismantled with slide bar 1242 and be connected, including cup jointing or threaded connection etc., in order to realize the installation of first locking member 124 on second support 122.

The spring 125 may be bonded to the second bracket 122 and the abutment plate 1243 may abut the spring 125 by gravity. The number of springs 125 can be multiple and spaced about the axis of the slide rod 1242.

The sliding rod 1242 and the abutting plate 1243 are both in a straight shape and are disposed vertically. Referring to fig. 3, a side of the sliding rod 1242 facing the screw 123 is provided with a recess 1243 such that the screw 123 abuts against the recess 1243, and the recess 1243 may be tapered.

As shown in fig. 2, the first support 121 includes a first plate 1211, a second plate 1212, and a third plate 1213, the third plate 1213 is connected to the first plate 1211 through the second plate 1212, and the third plate 1213 is located on a side of the first plate 1211 facing away from the second support 122, the first plate 1211 can be fixed inside the housing 110 by a fastener, wherein the first plate 1211 and the third plate 1213 are respectively provided with a threaded hole for engaging with the screw 123, that is, the screw 123 is respectively in threaded connection with the first plate 1211 and the third plate 1213, so that the screw 123 can move down along the axial direction thereof, and the stability of the movement is improved.

First plate 1211, second plate 1212, and third plate 1213 may be a unitary, one-piece structure.

In one embodiment, the second plate 1212 is annular and surrounds the exterior of the screw 123.

In another embodiment, the second plate 1212 is in the shape of a straight line and has two portions, one on each side of the third plate 1213.

As shown in fig. 2, the screw 123 and the sliding rod 1242 are coaxially disposed, and the end of the screw 123 that is engaged with the abutting plate 1243 can be screwed with a nut 1231, so that as shown in fig. 2, the contact area between the screw 123 and the abutting plate 1243 is increased, and the first locking member 124 is further effectively driven to move downward.

The end of the screw 123 away from the abutting plate 1243 can pass through the seal 1111 and extend to the outside of the housing 110, and the user can rotate the portion to drive the screw 123 to rotate, and further, the end of the screw 123 away from the abutting plate 1243 is connected with a rotating member 1232, the rotating member 1232 is located outside the housing 110, and at this time, the user can drive the screw 123 to rotate by acting on the rotating member 1232.

As shown in fig. 2, the locking mechanism 120 further includes a second locking member 126, the second locking member 126 is adapted to fit with the duct and has a semi-circular shape, the second locking member 126 is located at the opening 1112 of the housing 110, and one end of the second locking member is hinged to the housing 110 and the other end thereof is fastened to the housing 110. So that the second locking member 126 and the first locking portion 1241, both of which are semi-annular, wrap up the circular pipe.

The end surface of the second locking member 126 that engages the pipe is also provided with a cushion.

In summary, the opening 1112 on the housing 110 is clamped on the pipeline, and the first locking part 1241 is locked on the pipeline by rotating the screw 123 to move the first locking part 124 downward against the elastic force of the spring 125, so that the operation is convenient, the displacement of the valve actuator is effectively prevented, and the failure of the valve actuator is further avoided.

The above-mentioned embodiments are only used for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to limit the scope of the present invention in terms of implementation, which is not limited by the present embodiment, i.e. all equivalent changes or modifications made in accordance with the spirit disclosed by the present invention still fall within the scope of the present invention.

Claims

1. The utility model provides an prevent displacement formula valve actuator which characterized in that, includes shell and locking mechanism, be provided with the installation cavity in the shell, the one end of installation cavity is for sealing, and the other end is the opening, the pipeline of connecting the valve is established to the opening card, locking mechanism includes first support, second support, screw rod, first retaining member and spring, first support the second support the screw rod, first retaining member and spring mounting in the installation cavity, first support is located the second support deviates from open-ended one side, the screw rod spiro union in on the first support, first retaining member includes first locking portion, slide bar and butt plate, first locking portion with the butt plate is connected respectively in the both ends of slide bar, the slide bar sliding connection in on the second support, the butt plate is located between first support and the second support, the spring is arranged between the abutting plate and the second support, and the first locking portion is used for being matched with the pipeline.

2. The displacement resistant valve actuator of claim 1 wherein said first bracket includes a first plate, a second plate, and a third plate, said third plate being connected to said first plate by said second plate, and said third plate being located on a side of said first plate opposite said second bracket, said first plate being fixed within said housing, said first and third plates each being provided with a threaded bore for engaging said threaded rod.

3. The displacement resistant valve actuator of claim 2 wherein said second plate is annular.

4. The displacement resistant valve actuator of claim 2 wherein said second plate is two in number and is disposed on each side of said third plate.

5. The displacement resistant valve actuator of claim 1 wherein said threaded rod is disposed coaxially with said sliding rod.

6. The displacement resistant valve actuator of claim 1 wherein a nut is threadably attached to the end of said threaded rod that engages said abutment plate.

7. The displacement resistant valve actuator of claim 1 wherein a cushion is disposed on the end of said first locking portion that engages said conduit.

8. The displacement resistant valve actuator of claim 1 wherein said spring is plural in number and spaced about said slide rod axis.

9. The displacement resistant valve actuator of claim 1 wherein a side of said slide rod facing said threaded rod is provided with a recess.

10. The displacement resistant valve actuator of claim 1 further comprising a second lock, said second lock hingedly connected at one end to said housing and snap-fitting at an opposite end to said housing.