CN208907466U - A kind of valve actuator that practicability is good - Google Patents

Abstract

The utility model discloses a kind of good valve actuators of practicability, including control room, decelerating motor is fixedly installed on the roof of control room, the driving end of decelerating motor is fixedly installed with shaft, valve rod is threaded on the lateral wall of shaft, spool is fixedly installed on the bottom wall of valve rod, movable plate is fixedly installed on the lateral wall of valve stem tip, control room is symmetrically installed there are two fixed plate on the inner sidewall of valve rod side, locating rod is installed jointly on the lateral wall of two fixed plate opposite sides, locating rod is equipped with protective device, partition is fixedly installed on the inner sidewall of control room, spool is located at the downside of partition, the bottom end of partition is equipped with sealing device.The loss of valve rod and spool when the utility model reduces valve opening and closing, extends the service life of valve, when valve is opened, by the end sealing of control room, fluid and spring or shaft contacts are prevented, the aging of spring or shaft is slowed down, further extends the service life of valve.

Description

A kind of valve actuator that practicability is good

Technical field

The utility model relates to the good valve actuators in valve actuation techniques field more particularly to a kind of practicability.

Background technique

Valve actuator is the device using additionaling power opening/shutting valve, makes valve using the purpose of driving device Rapid operation is convenient, reliable rapidly, or realizes automatic control and remote control, and the basic demand to valve actuator is torque or pushes away Power is able to satisfy the opening and closing needs of valve, accurately reliable to the control of stroke and torque, and the selection of power is suitble to field condition, opening and closing Movement meets control and requires, and device itself is light and small.

Existing valve actuator, control valve closure when, spool can after being collided with valve body all standing, valve is close Envelope, control valve open when, valve rod can with the valve body on top collision after all standing, keep valve in the open state, touch every time Can all valve rod and spool be damaged by hitting, and so as to shorten the service life of valve, need to make improvements this.

Utility model content

Purpose of the utility model is to solve can make to valve in valve actuator use process in the prior art The problem of at loss, and the valve actuator that a kind of practicability of proposition is good.

To achieve the goals above, the utility model adopts the technical scheme that

A kind of valve actuator that practicability is good, including control room are fixedly installed on the roof of the control room and subtract Speed motor, the driving end of the decelerating motor are fixedly installed with shaft, and valve rod, institute are threaded on the lateral wall of the shaft It states and is fixedly installed with spool on the bottom wall of valve rod, movable plate, the control are fixedly installed on the lateral wall of the valve stem tip Room is symmetrically installed there are two fixed plate on the inner sidewall of valve rod side, on the lateral wall of two fixed plate opposite sides Locating rod is installed jointly, the locating rod is equipped with protective device, is fixedly installed with partition on the inner sidewall of the control room, And spool is located at the downside of partition, the bottom end of the partition is equipped with sealing device.

Preferably, the protective device includes the first buffer board and the second buffer board being plugged on locating rod lateral wall, It is fixedly installed with spring on the lateral wall of first buffer board and the second buffer board opposite end, and two springs are opposite One end is respectively and fixedly installed on the lateral wall of fixed plate.

Preferably, the sealing device includes the annular slab being fixedly mounted on spool roof, on the bottom wall of the partition Offer the annular groove with annular slab clearance fit.

Preferably, it is uniformly provided with screw thread on the lateral wall of the shaft, is offered on the roof of the valve rod and shaft phase The threaded hole mutually engaged.

Preferably, the movable plate is plugged on the lateral wall of locating rod, and movable plate is located at the first buffer board and second Between buffer board.

Preferably, sealing ring is fixedly installed on the roof on the inside of the annular groove.

Compared with prior art, the utility model has the advantages that:

1, when valve is closed, when spool is close to valve body, the second buffer board can slow down the movement of movable plate and valve rod, thus Reduce the impact force of spool and valve body, when valve is opened, when valve rod is close to fixed plate, the first buffer board can slow down movable plate and The movement of valve rod, to reduce the loss of valve rod and spool, extends valve to reduce the impact force of valve rod and fixed plate Service life；

2, when valve is in device for opening, annular slab is connected in a ring groove, so that the end sealing of control room be prevented Fluid stopping body and spring or shaft contacts, slow down the aging of spring or shaft, further extend the service life of valve.

Detailed description of the invention

Fig. 1 be the utility model proposes a kind of good valve actuator of practicability positive structure schematic；

Fig. 2 be the utility model proposes a kind of good valve actuator of practicability spool part-structure vertical view Figure.

In figure: 1 control room, 2 decelerating motors, 3 shafts, 4 valve rods, 5 spools, 6 movable plates, 7 fixed plates, 8 locating rods, 9 One buffer board, 10 second buffer boards, 11 springs, 12 partitions, 13 annular slabs, 14 annular grooves.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.

Referring to Fig.1-2, the good valve actuator of a kind of practicability, including control room 1, it is fixed on the roof of control room 1 Decelerating motor 2 is installed, the driving end of decelerating motor 2 is fixedly installed with shaft 3, is threaded with valve on the lateral wall of shaft 3 Bar 4 is uniformly provided with screw thread on the lateral wall of shaft 3, offered on the roof of valve rod 4 with the intermeshing threaded hole of shaft 3, open Dynamic decelerating motor 2, decelerating motor 2 drive shaft 3 to rotate, and shaft 3 is engaged with 4 screw thread of valve rod, move so as to band ovable valve stem 4 It is dynamic.

It is fixedly installed with spool 5 on the bottom wall of valve rod 4, movable plate 6 is fixedly installed on the lateral wall on 4 top of valve rod, controls Room 1 processed is symmetrically installed there are two fixed plate 7 on the inner sidewall of 4 side of valve rod, the lateral wall of two 7 opposite sides of fixed plate On locating rod 8 is installed jointly, the moving direction of valve rod 4 can be limited, improve the mobile stability of valve rod 4, in locating rod 8 Equipped with protective device.

Protective device includes the first buffer board 9 and the second buffer board 10 being plugged on 8 lateral wall of locating rod, movable plate 6 Be plugged on the lateral wall of locating rod 8, and movable plate 6 is between the first buffer board 9 and the second buffer board 10, movable plate 6 to It can be contacted respectively with the second buffer board 10 and the first buffer board 9 down or when moving up, the first buffer board 9 and the second buffer board 10 Spring 11 is fixedly installed on the lateral wall of opposite end, and two opposite one end of spring 11 are respectively and fixedly installed to fix On the lateral wall of plate 7, when movable plate 6 and the second buffer board 10 or the first buffer board 9 contact, spring 11 can all slow down movable plate 6 Movement.

Partition 12 is fixedly installed on the inner sidewall of control room 1, and spool 5 is located at the downside of partition 12, the bottom of partition 12 End is equipped with sealing device, and sealing device includes the annular slab 13 being fixedly mounted on 5 roof of spool, is opened up on the bottom wall of partition 12 There is the annular groove 14 with 13 clearance fit of annular slab, sealing ring is fixedly installed on the roof of 14 inside of annular groove, at valve When device for opening, annular slab 13 is connected in annular groove 14, and annular slab 13 and sealing ring are in close contact, thus by control room 1 End sealing, prevent fluid from contacting with spring 11 or shaft 3, slow down the aging of spring 11 or shaft 3.

In the utility model, start decelerating motor 2, decelerating motor 2 drives shaft 3 to rotate, and shaft 3 is nibbled with 4 screw thread of valve rod It closes, thus mobile with ovable valve stem 4, when needing closure valve, valve rod 4 and spool 5 are moved down, living when spool 5 is close to valve body Movable plate 6 is contacted with the second buffer board 10, and spool 5 continues to move down, and movable plate 6 pushes the second buffer board 10 and spring 11, from And slow down the movement of movable plate 6, valve rod 4 and spool 5, when needing to open valve, valve rod 4 and spool 5 are moved up, in valve rod 4 When close to fixed plate 7, movable plate 6 is contacted with the first buffer board 9, and valve rod 4 continues to move up, and the first buffering is pressed on movable plate 6 Plate 9 and spring 11, to slow down the movement of movable plate 6 and valve rod 4, annular slab 13 is located in annular groove 14 at this time, and with sealing Circle is in close contact, by the end sealing of control room 1.

The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model Within enclosing.

Claims (6)

1. a kind of good valve actuator of practicability, including control room (1), it is characterised in that: the roof of the control room (1) On be fixedly installed with decelerating motor (2), the driving end of the decelerating motor (2) is fixedly installed with shaft (3), the shaft (3) Lateral wall on be threaded with valve rod (4), be fixedly installed with spool (5) on the bottom wall of the valve rod (4), the valve rod (4) It is fixedly installed on the lateral wall on top movable plate (6), the control room (1) is symmetrical on the inner sidewall of valve rod (4) side There are two installations fixed plate (7), is equipped with locating rod (8), institute jointly on the lateral wall of two fixed plate (7) opposite sides It states locating rod (8) and is equipped with protective device, be fixedly installed with partition (12) on the inner sidewall of the control room (1), and spool (5) Positioned at the downside of partition (12), the bottom end of the partition (12) is equipped with sealing device.

2. a kind of good valve actuator of practicability according to claim 1, it is characterised in that: the protective device packet Include the first buffer board (9) and the second buffer board (10) being plugged on locating rod (8) lateral wall, first buffer board (9) and It is fixedly installed with spring (11) on the lateral wall of the second buffer board (10) opposite end, and one end that two springs (11) are opposite It is respectively and fixedly installed on the lateral wall of fixed plate (7).

3. a kind of good valve actuator of practicability according to claim 1, it is characterised in that: the sealing device packet The annular slab (13) being fixedly mounted on spool (5) roof is included, is offered on the bottom wall of the partition (12) and annular slab (13) The annular groove (14) of clearance fit.

4. a kind of good valve actuator of practicability according to claim 1, it is characterised in that: the shaft (3) It is uniformly provided with screw thread on lateral wall, is offered on the roof of the valve rod (4) and shaft (3) intermeshing threaded hole.

5. a kind of good valve actuator of practicability according to claim 2, it is characterised in that: the movable plate (6) It is plugged on the lateral wall of locating rod (8), and movable plate (6) is between the first buffer board (9) and the second buffer board (10).

6. a kind of good valve actuator of practicability according to claim 3, it is characterised in that: the annular groove (14) Sealing ring is fixedly installed on the roof of inside.