CN201166187Y

CN201166187Y - Full seal valve drive device

Info

Publication number: CN201166187Y
Application number: CNU2008200103703U
Authority: CN
Inventors: 张�林
Original assignee: SHENYANG HENYI ENTERPRISE CO Ltd
Current assignee: SHENYANG HENYI ENTERPRISE CO Ltd
Priority date: 2008-01-21
Filing date: 2008-01-21
Publication date: 2008-12-17
Anticipated expiration: 2018-01-21

Abstract

The utility model relates to a whole sealing valve driving device, which solves the problem that an underwater valve is not closely sealed and belongs to whole sealing worm gears and the endless screw driving devices. The whole sealing valve driving device comprises a shell, an endless screw shaft, an endless screw, an axle sleeve and a valve shaft, wherein a hand wheel is installed on the endless screw and drives the worm gear which is engaged with the hand wheel, the worm gear is connected with a main axle sleeve, and the valve shaft is installed in an inner hole of the main axle sleeve, which transfers power to the valve shaft to drive the valve shaft to rotate. The bearing face is sealed by an O-shaped coil. The shell is an integral piece. A window is arranged on the side of the shell and the endless screw and the worm gear are installed in the shell through the window. A side cap is sealed on a side window, which realizes static sealing. The whole sealing valve driving device changes a structure mode that a traditional installing worm gear is installed from an upper main axial cord and a lower main axial cord, the side window does not have a driving piece and is statically sealed, which enables the sealing to be easy. The whole sealing valve driving device is in particular suitable for being used in underwater valves.

Description

Full-sealing valve driving device

Technical field

The utility model relates to valve technology field, and it is a kind of worm screw full-sealing valve driving device in definite saying.It is strict a kind of new type worm wheel, full-sealing valve driving device by seal request (IP68) design.

Background technique

A lot of pipelines are to be layered on undergroundly, and water often covers the control well of pipeline, and the valve of controlling plumbing fixtures is along with sinking in the water, and supporting with it valve actuator also together is immersed on the water surface or down.Drive unit is flooded in water regular meeting.Mi Feng valve driving (part revolution) device is the solution of this operating mode fully.The existence of this operating mode requires the valve actuator of sealing fully to occur.Drive unit need satisfy the requirement (drive unit in immersing water after, the chamber does not intake) of seal standard IP68 usually.And common drive unit is to reach IP65 to require (drive unit is when spraying water, and inner chamber is not intake).The lubricated of drive unit generally all is lubricating grease (low-speed heave-load), if the inner chamber water inlet, lubricating grease meeting highland reaction during rotational parts, lubrication effect reduces, and influences transmission.Simultaneously part is got rusty, influence the working life of device.Italy Biffi Italia S.R.I. has applied for that name is called the Chinese patent of " sub-sea valve actuator ", and application number is 90101146.0, and it is the consuming time and big problem of diver's workload of loading, unloading that solves the seabed drive unit.Foregoing invention is not improved the sealing of valve.And its structure also is not suitable for the pipeline valve used always.

Summary of the invention

The purpose of this utility model provides a kind of novel full-sealing valve driving device, the sealing of this novel fully-sealed valve actuator reaches the requirement of IP68, in the depth of water of regulation, the inner chamber that can guarantee structure is not intake, thereby improved valve actuator transmission effect, prolonged its working life.

Valve driving is the Frequently Asked Questions in a universal machine field.Manpower driving major part is that the worm and gear transmission realizes at present.The utility model belongs to the worm gearing brand new, and worm gear is to pack into from a side window of housing, and changing the tradition worm gear of packing into is the mode of structure of packing into from main axis up and down, is a kind of brand-new fit.It is whole making housing, does not have the loam cake and the low bottom-disc of separation, has only a side window.

The utility model full-sealing valve driving device, full-sealing valve driving device, comprise housing, worm shaft, worm screw, axle sleeve and valve shaft, handwheel 7 is contained on the worm screw 5, by the worm gear 3 of its drive with its engagement, worm gear is connected with collar bush 9, the endoporus of collar bush 9 is installed valve shaft, power is passed to valve shaft, drive valve shaft and rotate, bearing surface all seals with O type circle, it is characterized in that: housing 1 is a single piece, at housing 1 side windowing 21, worm and worm wheel 3 are by this window 21 housing 1 of packing into, and side cover 2 is sealed on the side window mouth, realize static sealing, the small end lid 4 of its supporting, 6 assembling fitting surfaces also seal with O type circle.And all assembling tapped holes are blind hole.In order to realize spacing to the worm gear corner, install two on the housing and adjust screws 14, can adjust in housing 1 outside, its sealing is realized by two seals.The one, on the screw thread of jackscrew, scribble the sealing adhesive sticker, the 2nd, externally seal with O type circle 15.This device is provided with an one-way valve can automatic pressure-relieving when chamber pressure reaches setting pressure.The side of this device comprises the front, rear, left and right four direction, and window 21 is opened when trailing flank, and at this moment side cover is to use as stressed member, adjusts screw 22 and is contained on the side cover.Worm gear is connected with the special-shaped bump slot structure of collar bush 9 usefulness.Adopt end face thrust-bearing 13 and the sliding bearing 12 combined worm shafts 5 that support, make most of thrust on end cap 4 and 6.On housing 1 top plug screw assembly 19 is installed, one-way valve is housed in the plug screw assembly 19 realizes the inner chamber release.The handwheel of this device is realized no step axially locating on optical axis.

The utility model has the advantages that: in the depth of water, can guarantee that the inner chamber of structure is not intake, thereby improve valve actuator transmission effect, prolong its working life.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is the special-shaped concave station structural representation of collar bush.

Fig. 4 is a worm gear profiled slot structural representation.

Fig. 5 is the structural representation after the worm gear profiled slot is installed collar bush.

1 is that housing, 2 for O-ring seals, 12 for sliding bearing, 13 for thrust-bearing, 14 for location jackscrew, 16 for band cap nut, 19 for plug screw assembly, 20 for rubber washer, 21 for window, 22 for adjust screw, 23 is collar bush special-shaped concave station for collar bush, 10 for rotating handwheel, 8 for indicator panel, 9 for right end cap, 7 for worm shaft, 6 for left end cap, 5 for worm gear, 4 for side cover, 3 among the figure.

Embodiment

The utility model is made up of foundry goods or metalwork, and general machining factory all can produce and assemble with reference to accompanying drawing.

Rotate handwheel 7 drive worm shafts 5 and pass through worm couple, drive worm gear 3, the high pulling torque of worm gear is to realize transmission with the special-shaped bump slot structure of collar bush 9, manual force is transferred to collar bush, the endoporus of collar bush is the dress valve shaft, power is passed to valve shaft, drive valve shaft and rotate, play the switching function (rotating in 90 °) of control valve.Worm screw, collar bush are rotating component, and its supporting axial plane is O type circle and carries out dynamic seal (packing).Housing is a single piece, and side cover 2 is at the existing static sealing of side window cause for gossip, and small end lid 4, the 6 assembling fitting surfaces of its supporting also seal with O type circle.And all assembling tapped holes are blind hole.Guarantee the sealing of internal cavities.

In order to realize spacing to the worm gear corner, two location jackscrews 14 are arranged on the device, can be housing 1 outside the adjustment, its sealing is realized by two seals.The one, on the screw thread of jackscrew, scribble the sealing adhesive sticker, the 2nd, externally seal with O type circle 15.End face can compress O type circle when screwing band cap nut 16, realizes outside seal.This device is provided with an one-way valve can automatic pressure-relieving when chamber pressure reaches setting pressure.200,300,400,500KPa realize the inner chamber release with the one-way valve in the plug screw assembly 19 very minor structure, the specified pressure of opening of one-way valve (seeing diagram) is set, and can determine parameter according to the working condition requirement that uses:.

The handwheel 7 of this device is a no step axially locating on optical axis.Its reason is step small boss of processing on the handwheel hole, withstand with axial end and to carry out axially locating, and be contained in axle with a packing ring and bolt and go up and clamp a handwheel, handwheel is located on optical axis, and by the key driving torque (keyway is a direct through groove, cut small boss), the location and the rotating function of realization handwheel.

Worm gear is packed into from the housing side window.And side window does not have driving component, is static sealing, and what sealing became is easy to.And change also taken place in the height of devices structure, and change lower is for weight reduction provides possibility.。The utility model new type worm wheel worm gears provides a kind of device of the gate switch of actuating valve under water.Sealing reaches the requirement of IP68.In the depth of water of regulation, the operation slewing gear can guarantee that the inner chamber of mechanism is not intake.Thereby the inner body of assurance device does not corrode for a long time, does not lose efficacy.Its sealing principle is that all rotating components are all adopted reliable O type circle sealing, the magnitude of interference of O type circle and sealing surface, definite degree that can reach sealing.This device has used double-layer seal to the tapped hole of adjusting the location in the device, and the firstth, be coated with the sealing of sealing adhesive sticker on the double-screw bolt, the secondth, externally with the sealing of end face O type circle.Do not intake in the time of like this can be in the long-term immersion of device is gone into.Because the device sealing is tight, inner chamber is a confined space, externally under the differential pressure action, can assemble pressure (pressurized gas that leak out as the valve rod place are pressed into inner chamber) at inner chamber, can produce device when pressure acquires a certain degree and destroy.This device is provided with an one-way valve can automatic pressure-relieving when chamber pressure reaches setting pressure.The handwheel of this device is a no step axially locating on optical axis.Its reason is little dome platform of step of processing on the handwheel endoporus, withstand with axial end and to carry out axially locating, and be contained in a last bolt with a packing ring and one and clamp a handwheel, handwheel is located on optical axis, and, realize the operation of handwheel by key transmitting torque (keyway is a direct through groove).

Claims

1, full-sealing valve driving device, comprise housing, worm shaft, axle sleeve and valve shaft, handwheel (7) is contained on the worm shaft (5), by the worm gear (3) of drive with its engagement, worm gear is connected with collar bush (9), the endoporus of collar bush (9) is installed valve shaft, power is passed to valve shaft, drive valve shaft and rotate, support worm shaft (5) with bearing, bearing surface all seals with O type circle, it is characterized in that: housing (1) is a single piece, and at housing (1) side windowing (21), worm shaft (5) and worm gear (3) are by this window (21) housing (1) of packing into, side cover (2) is sealed on the side window mouth (21), realizes static sealing.

2, full-sealing valve driving device according to claim 1 is characterized in that: all assembling tapped holes are blind hole.

3, full-sealing valve driving device according to claim 1 is characterized in that: be equipped with two on the housing (1) and adjust screw (14).

4, full-sealing valve driving device according to claim 1, it is characterized in that: the side of this device comprises the non-arc surface of front or back, when window (21) was opened in the back, at this moment side cover was to use as stressed member, adjusted screw (22) and was contained on the side cover.

5, full-sealing valve driving device according to claim 1 is characterized in that: worm gear is connected with special-shaped bump slot structure with collar bush (9).

6, full-sealing valve driving device according to claim 1 is characterized in that: adopt end face thrust-bearing (13) and the combined worm shaft (5) that supports of sliding bearing (12), make most of thrust on end cap (4) and end cap (6).

7, full-sealing valve driving device according to claim 1 is characterized in that: plug screw assembly (19) is installed on housing (1) top, one-way valve is housed in the plug screw assembly (19) realizes the inner chamber release.

8, full-sealing valve driving device according to claim 1, it is characterized in that: step small boss of processing on the handwheel hole in the device, withstand with axial end and to carry out axially locating, and be contained in axle with a packing ring and bolt and go up and clamp a handwheel, handwheel is located on optical axis.