CN207080603U - A kind of absence of vortices type control valve for water pump - Google Patents

Abstract

The utility model discloses a kind of absence of vortices type control valve for water pump,It includes valve body,Bonnet,Flap and headstock gear,The valve body is provided with water inlet,Delivery port and installation opening,The water inlet,Delivery port and installation opening are interconnected on the inside of valve body,Valve seat is provided with the valve body,The bonnet is on the installation opening of valve body and it is provided with skirt set,The flap is removable located at the skirt set inner side of bonnet,The flap is set with headstock gear drive connection,Flap is provided with groove and 3~15 pieces of ormolu guide pads axially extended,The skirt set madial wall plasma spray scribbles the chromium oxide ceramics coating that thickness is 0.1~0.6mm,Axial line between the water inlet and delivery port and the angle between the axial line of bonnet are 65 ± 3 °,The headstock gear is fixedly arranged on bonnet,The utility model is used for the control valve of centrifugal pump delivery port.

Description

A kind of absence of vortices type control valve for water pump

Technical field

A kind of absence of vortices type control valve for water pump is the utility model is related to, it belongs to the technology neck of supply and drain water system pipe network equipment Domain.

Background technology

It is one of common mode to carry out pumping using centrifugal water pump in supply and drain water system, with reference to the work of centrifugal water pump Make feature, typically to set control valve for water pump to be used to coordinate centrifugal water pump work in the delivery port of water pump, prevent to waterway tube Net causes impact of water hammer or prevents centrifugal water pump from inverting.Such as the Chinese patent of the bulletin on the 2nd of September in 2015 ZL201210005166.3 discloses a kind of Pneumatic energy-saving piston-balanced water pump control valve, and it includes valve body, lower cover, Lower seal, lower valve base, bonnet, valve shaft and the device of control valve shaft axial stretching motion, bonnet is placed on valve body and bonnet A section lid body is put in into valve body, valve shaft is injected in bonnet from outer activity, and lower cover is arranged in valve body and is arranged on valve shaft End, lower valve base are arranged on the passage of body cavity, and lower seal is movable on bonnet on lower cover bottom cylindrical week Sliding sleeve has sleeve, sleeve and bonnet lid fitted seal, and one end and the lower cover of sleeve are sealed connected together, on lower cover Through hole provided with insertion runner and barrel bore, it is pneumatic linear actuator to control valve shaft to make the device of stretching motion, and pneumatic linear actuator is arranged on valve Cover, main piston and the valve shaft of pneumatic linear actuator are fixed together, in pneumatic linear actuator cylinder body the chamber of main piston both sides respectively with gas Autocontrol system is connected, and damper piston is extended with the side of main piston towards valve body, correspondingly in pneumatic linear actuator cylinder body towards valve body one End wall body is provided with the reaming section injected for damper piston.The control valve for water pump can accordingly solve water hammer and centrifugal water pump reversion The problem of, but in the case that the fluid impurity content conveyed in pipeline is higher or pipeline does not have use for a long time, water pump Due to being influenceed by sedimentation and parts corrosion, there is clamping stagnation or blocked control valve in the keying of flap, and this is water pump control The commonplace technical problem that valve processed is encountered at present.

Utility model content

The purpose of this utility model is to provide a kind of absence of vortices type control valve for water pump, and it can largely avoid its work During the clamping stagnation that occurs or block phenomenon, the particularly generation of water hammer.

To solve aforementioned technical problem, technical scheme is as follows used by the utility model：A kind of absence of vortices type water pump control Valve processed, including valve body, bonnet, flap and headstock gear, the valve body are provided with water inlet, delivery port and installation opening, the water inlet Mouth, delivery port and installation opening are interconnected on the inside of valve body, and valve seat is provided with the valve body, and the bonnet is located at the assembling of valve body On mouth and skirt set that it has in the valve body and extended to valve seat part, the flap is hollow barrel structure and it is removable Inner side is covered located at the skirt of bonnet, the flap is set with headstock gear drive connection, and positioned at adjacent with bonnet on the flap Its periphery wall of axial one end on offer 1~3 groove, each groove is provided with sealing ring, the axle of the flap Uniform welding has 3~15 pieces of ormolu axially extended guide pads on to the other end its periphery wall, and the copper zinc closes Golden guide pad mutually staggers with the groove along the axial direction of flap, and the axial end portion away from bonnet is provided with sealing on the flap Pad, the axially external of the sealing gasket are provided with pressing plate, and the pressing plate is fixedly arranged on flap by bolt, the skirt set madial wall position Chromium oxide ceramics coating is coated with the working face upper plasma with valve flap contacts, the thickness of the chromium oxide ceramics coating is 0.1~0.6mm, and the angle between the axial line and the axial line of bonnet between the water inlet and delivery port be 65 ± 3 °, the headstock gear is fixedly arranged on bonnet.

Preferable above-mentioned absence of vortices type control valve for water pump, the groove are one.

Preferable above-mentioned absence of vortices type control valve for water pump, the ormolu guide pad are 8 pieces.

Preferable above-mentioned absence of vortices type control valve for water pump, the axle of axial line and bonnet between the water inlet and delivery port Angle between heart line is 65 °.

By using above-mentioned technical proposal, the beneficial effects of the utility model are：Except possessing：Close valve to start, reduction is opened Moving axis power；Valve termination of pumping is closed, termination of pumping does not reverse without water hammer, pump；During non-artificial accident power-off, these three centrifugations of automatic Slow Close termination of pumping Very extensive for the accommodation of working media outside the functional characteristics of formula control valve for water pump, strong adaptability, silt impurity is not The contact area of easily deposition, flap and bonnet is small, and the impurity in fluid is acted on significantly the wear-out failure between flap and bonnet Reduce, simultaneously because bonnet inner chamber working surface coats chromium oxide ceramics coating so that the corrosion and destruction of its working surface obtains To greatly improving but in turn ensure that assembly precision, it is often more important that, the axle of axial line and bonnet between water inlet and delivery port Angle between heart line is set as 65 ± 3 °, its one side defer to disclosed in characteristic curve of centrifugal pump " flow is smaller, shaft power It is smaller " theory, but the generation of the control water hammer for termination of pumping process be not only only that control close valve speed, for big mouth For the control valve for water pump in footpath, close valve and be related to reflux problem slowly excessively, therefore, it is not more slow better to close valve speed, and experiment shows The angle of foregoing two axial line is between 65 ± 3 °, and the compression shock and vibrations that water hammer is brought are minimum, the shaft power transition of centrifugal pump Degree of convergence is minimum, and the functional reliability of control valve for water pump is lifted with being able to essence, and its service life is the 5~8 of conventional control valve Times.

Brief description of the drawings

Fig. 1 is the schematic cross-sectional view of the utility model embodiment；

Fig. 2 is the side view of flap in Fig. 1；

Fig. 3 is A-A schematic cross-sectional views in Fig. 2；

Fig. 4 is the partial enlarged drawing of a parts in Fig. 1；

Embodiment

Referring to figs. 1 to Fig. 4, embodiment of the present utility model discloses a kind of absence of vortices type control valve for water pump, and it includes valve body 1st, bonnet 2, flap 3 and headstock gear 4, the valve body 1 are provided with water inlet 11, delivery port 12 and installation opening 13, the water inlet 11st, delivery port 12 and installation opening 13 are interconnected in the inner side of valve body 1, are provided with valve seat 14 in the valve body 1, the bonnet 2 is located at On the installation opening 13 of valve body 1 and its skirt for having in valve body 1 and extending to the part of valve seat 14 covers 21, and the skirt set 21 is one Individual sectional area is the structure of annulus, and it is mainly that the axial movement of flap 3 provides guide effect, while water-stop between the two Structure prevents fluid from flowing to delivery port 12 from water inlet 11 when closing valve, the flap 3 substantially in hollow barrel structure and its can On the inside of the mobile skirt set 21 located at bonnet 2, the flap 3 is set with the drive connection of headstock gear 4, and the shaft end of the flap 3 A groove 36 is offered on 32 (that one end adjacent with bonnet 2) its periphery wall, the groove 36 is provided with sealing ring 38, uniform welding has the eight pieces of ormolu axially extended guide pads 37 on its periphery wall of the shaft end 31 of the flap 3, The ormolu guide pad 37 mutually staggers with the groove 36 along the axial direction of flap 3, and the shaft end 31 of the flap 3 is provided with Packing holder 33, for sealing ring 34 on packing holder 33, sealing ring 33 is tightly pressed against packing holder 33 by sealing ring pressing plate 35 On, sealing ring pressing plate 35 is fixedly arranged on packing holder 33 or flap 3 by bolt, and 21 madial walls of the skirt set are located at and flap The working face upper plasma of 3 contacts is coated with chromium oxide ceramics coating, and the thickness of the chromium oxide ceramics coating is typically in the range of 0.1 ~0.6mm, the present embodiment selection 0.5mm or so, and the axial line between the water inlet 11 and delivery port 12 and bonnet 2 Angle between axial line is 65 °, and the axial line of bonnet 2 described here is primarily referred to as the axle center for the skirt set 21 that section is annulus Line, the angle are in the case of the pipeline diameter of water transfer pipe network is more than 350mm, by testing the optimal angle of assembling obtained, are somebody's turn to do The compression shock and vibrations that experimental result water hammer under angle is brought are minimum, and the shaft power transition degree of convergence of centrifugal pump is minimum.It is described Headstock gear 4 includes opening and closing the cylinder of control valve for water pump, controls the two-position-five-way solenoid valve of switching cylinder, located at the outside of bonnet 2 Or intake and exhaust pipeline and pass valve deceleration device, headstock gear 4 interior located at bonnet 2 and be connected with the porting of cylinder have A variety of implementations and there is disclosed technical inspiration, be not described in detail herein.The utility model is mainly by by static sealing Structure is changed to the sealing structure of relative motion, the contact area of flap 3 and bonnet 2 is reduced into original 1/6th even more Medium that is low, changing both contact surfaces of flap 3 and bonnet 2, the angle of optimization (flap 3) axial line of bonnet 2 and the axial line of valve body 1 Etc. the improvement of many aspects, so as to fundamentally lift the service life of control valve for water pump to 6~8 times.Sealing ring described here All be the part that seals with sealing gasket statement, its be mainly literal differentiation in the difference of claim statement and Without difference functionally.

In above-described embodiment, for the occasion that Fluid pressure is big or caliber is big, the sealing ring on the outside of flap can select 2 ~3, the corresponding ormolu guide pad can select 8~15 pieces, although the water inlet that is limited of the utility model and Axial line between delivery port and the angle between the axial line of bonnet are 65 °, and allow positive and negative 3 ° of deviation, but the knot tested Fruit shows that water hammer pressure has the transition for showing aobvious when deviateing 65 °, described if delivery port back segment has bend pipe closely Angle can not be less than 65 °, otherwise prevent effect caused by water hammer from will have a greatly reduced quality.

Claims (4)

1. A kind of 1. absence of vortices type control valve for water pump, it is characterised in that：Including valve body, bonnet, flap and headstock gear, the valve body Provided with water inlet, delivery port and installation opening, the water inlet, delivery port and installation opening are interconnected on the inside of valve body, the valve Valve seat is provided with vivo, and the bonnet is on the installation opening of valve body and it has positioned at the skirt that valve body is interior and extends to valve seat part Set, the flap is hollow barrel structure and its removable skirt located at bonnet covers inner side, and the flap is driven with headstock gear Connection is set, and offers 1~3 groove on its periphery wall of axial one end adjacent with bonnet on the flap, Each groove is provided with sealing ring, and uniform welding has 3~15 pieces of edges on its periphery wall of the axial other end of the flap Axially extending ormolu guide pad, the ormolu guide pad mutually stagger with the groove along the axial direction of flap, institute State the axial end portion away from bonnet on flap and be provided with sealing gasket, the axially external of the sealing gasket is provided with pressing plate, and the pressing plate leads to Cross bolt to be fixedly arranged on flap, the skirt set madial wall is located at is coated with chromium oxide pottery with the working face upper plasma of valve flap contacts Porcelain coating, the thickness of the chromium oxide ceramics coating are 0.1~0.6mm, and the axle center between the water inlet and delivery port Angle between line and the axial line of bonnet is 65 ± 3 °, and the headstock gear is fixedly arranged on bonnet.
2. 2. absence of vortices type control valve for water pump according to claim 1, it is characterised in that：The groove is one.
3. 3. absence of vortices type control valve for water pump according to claim 1, it is characterised in that：The ormolu guide pad is 8 Block.
4. 4. the absence of vortices type control valve for water pump according to claim 1 or 2 or 3, it is characterised in that：The water inlet and water outlet Axial line between mouthful and the angle between the axial line of bonnet are 65 °.