CN201526471U

CN201526471U - Semi-sphere type slurry pump control valve

Info

Publication number: CN201526471U
Application number: CN2009202679628U
Authority: CN
Inventors: 邵建农
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-10-16
Filing date: 2009-10-16
Publication date: 2010-07-14
Anticipated expiration: 2019-10-16

Abstract

The utility model discloses a semi-sphere type slurry pump control valve. The control valve comprises a left valve body (3), a right valve body (6), and a valve core (4), wherein the lower end of an upper valve rod (11) is inserted into the upper end of the valve core (4) and forms a whole with the valve core, the upper end of the upper valve rod (11) penetrates an inner hole of an upper eccentric bushing (7) and is connected valve body with a valve core driving device, the upper end of a lower valve rod (20) is inserted into the lower end of the valve core (4) and forms a whole with the valve core (4), the lower end thereof is inserted into a shaft hole of a lower eccentric bushing (19), the upper eccentric bushing (7) and the lower eccentric bushing (19) are respectively inserted into an upper and lower shaft holes of the right valve body (6), a sealing ring (2) is fixedly mounted on the valve core (4), a clearance is reserved between the marginal part of the sealing ring (2) and the valve core (4), and the elastic deformation occurs under stress when contacting with a sealing surface of the left valve body (3). The semi-sphere type slurry pump control valve has the advantages of small volume, low open and close pressure, simple and convenient manufacture, and good sealing effect.

Description

A kind of hemispherical control valve of slurry pump

Technical field

The utility model relates to a kind of slurry pump control valve, particularly relates to a kind of hemispherical control valve of slurry pump.

Technical background

Existing slurry pump control valve mainly contains hydraulic faucet type and two kinds of patterns of hydraulic brake template.Hydraulic faucet type valve body and spool quality of fit height, processing difficulties, sealing effect is not so good, reveals easily.Hydraulic brake template height dimension is big, and it is big to take up room, the installation and maintenance difficulty, and hydraulic system opens and closes the pressure height.

The model utility content

Technical problem to be solved in the utility model provide a kind of volume little, open and close that pressure is low, processing is easy, the hemispherical control valve of slurry pump of good sealing effect.

In order to solve the problems of the technologies described above, the hemispherical control valve of slurry pump that the utility model provides, comprise left valve barrel, right valve barrel and spool, upper end and spool that spool is inserted in the lower end of upper valve rod form an integral body, the upper end of upper valve rod is passed the endoporus of eccentric bushing and is connected with device for driving valve body, lower end and spool that spool is inserted in the upper end of lower valve rod form an integral body, insert in the axis hole of following eccentric bushing its lower end, last eccentric bushing and following eccentric bushing insert respectively right valve barrel on, in the lower shaft hole, seal ring is fixedly mounted on the described spool, leave the gap between the edge section of described seal ring and the described spool, contact with described left valve barrel sealing surface and can produce resiliently deformable when stressed.

Described device for driving valve body is also can be around the rotational of described bearing pin among oil cylinder is positioned cylinder bracket by bearing pin, described cylinder bracket is fixed on the described right valve barrel, the end of the piston rod of described oil cylinder and connecting lever one end are hinged, the described connecting lever the other end is fixedlyed connected with described upper valve rod, oil inlet pipe one end is connected with the modulating valve of the bottom of described oil cylinder, the other end is connected with solenoid directional control valve, return tube one end is connected with described oil cylinder, the other end is connected with described solenoid directional control valve, and described solenoid directional control valve is connected with hydraulic station with second oil pipe by first oil pipe.

Adopt the hemispherical control valve of slurry pump of technique scheme, because seal ring is fixedly mounted on the spool, leave the gap between the edge section of seal ring and the spool, contact with the left valve barrel sealing surface and can produce resiliently deformable when stressed, improved sealing effect, volume is little, switching pressure is low, processing is easy.

In sum, the utility model is that a kind of volume is little, switching pressure is low, processing is easy, the hemispherical control valve of slurry pump of good sealing effect.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is a plan view of the present utility model.

Embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Referring to Fig. 1 and Fig. 2, left valve barrel 3 is connected by first screw 5 with right valve barrel 6; Seal ring 2 is connected with spool 4 by second screw 1, and is gapped between the edge section of seal ring 2 and the spool 4, contacts with left valve barrel 3 sealing surfaces can produce resiliently deformable when stressed, improves sealing effect; Insert in the cylindrical hole of spool 4 upper ends the lower end of upper valve rod 11, and fixing with first taper pin 18, forms an integral body with spool 4; The endoporus of eccentric bushing 7 is passed in the upper end of upper valve rod 11, and inserts in the axis hole of connecting lever 9 one ends, connects and transmitting torque by flat strong 10; Insert in the cylindrical hole of spool 4 lower ends the upper end of lower valve rod 20, and be connected to become integral body by second taper pin 181, and insert in the axis hole of following eccentric bushing 19 lower end of lower valve rod 20; Last eccentric bushing 7 and following eccentric bushing 19 insert respectively in the upper and lower axis hole of right valve barrel 6, and fixing with the 3rd screw 8 and the 4th screw 21; When assembling or maintenance, eccentric bushing 7 and following eccentric bushing 19 in the rotation, the distance between 3 liang of sealing surfaces of adjustable sealing ring 2 and left valve barrel keeps good sealing state.Oil cylinder 16 is positioned by bearing pin 14 among the cylinder bracket 15, can be around the rotational of bearing pin 14, and cylinder bracket 15 is fixed on the right valve barrel 6 by the 5th screw 17, and the thrust that oil cylinder 16 is produced is transmitted on the right valve barrel 6; The end of piston rod 13 is connected by bearing pin 12 with connecting lever 9 the other ends, can relatively rotate, and the thrust of piston rod 13 is passed to connecting lever.Oil inlet pipe 23 1 ends are connected with the modulating valve 22 of oil cylinder 16 bottoms, the other end is connected with solenoid directional control valve 26, return tube 24 1 ends are connected with oil cylinder 16, and the other end is connected with solenoid directional control valve 26, and solenoid directional control valve 26 is connected with hydraulic station 25 with second oil pipe 28 by first oil pipe 27.

Major function: the utility model is mainly used in slag stock pump outlet, has that anti-backflow, zero load open pump, subdue water hammer, function such as control automatically, effectively protects the safety of water pump and pipe network equipment.

Working principle:

Drive valve: referring to Fig. 1 and Fig. 2, during starting mode of pump, hydraulic station 25 starts simultaneously; After water pump reaches rated speed, solenoid directional control valve 26 electric back right chamber conducting, hydraulic oil enters the bottom of oil cylinder 16, pushing piston-rod 13 through second oil pipe 28, solenoid directional control valve 26, oil inlet pipe 23 and modulating valve 22, drive upper valve rod 11 by connecting lever 9 and rotate, valve is slowly opened.Behind the valve complete opening, solenoid directional control valve 26 and hydraulic station 25 cut off the power supply automatically, quit work, and oil cylinder pressurize self-locking, it is motionless at fully open position to keep valve.

Close valve: when termination of pumping or forced outage, referring to Fig. 1 and Fig. 2, solenoid directional control valve 26 gets electric back left chamber conducting from reserve battery, hydraulic station energy storage pressure oil enters the epicoele of oil cylinder 16 through solenoid directional control valve 26 and return tube 24 from first oil pipe 27, push back piston rod 13, drive upper valve rod 11 by connecting lever 9 and rotate, about valve quick closedown 70 degree; 20 remaining degree are slowly closed, and subdue water hammer.Can control valve Slow Close speed by modulating valve 22.

Claims

1. hemispherical control valve of slurry pump, comprise left valve barrel (3), right valve barrel (6) and spool (4), upper end and spool (4) that spool (4) is inserted in the lower end of upper valve rod (11) form an integral body, the upper end of upper valve rod (11) is passed the endoporus of eccentric bushing (7) and is connected with device for driving valve body, lower end and spool (4) that spool (4) is inserted in the upper end of lower valve rod (20) form an integral body, insert in the axis hole of following eccentric bushing (19) its lower end, last eccentric bushing (7) and following eccentric bushing (19) insert respectively right valve barrel (6) on, in the lower shaft hole, it is characterized in that: seal ring (2) is fixedly mounted on the described spool (4), leave the gap between the edge section of described seal ring (2) and the described spool (4), contact with described left valve barrel (3) sealing surface and can produce resiliently deformable when stressed.

2. hemispherical control valve of slurry pump according to claim 1, it is characterized in that: described device for driving valve body is also can be around the rotational of described bearing pin (14) among oil cylinder (16) is positioned cylinder bracket (15) by bearing pin (14), described cylinder bracket (15) is fixed on the described right valve barrel (6), the end and connecting lever (9) one ends of the piston rod (13) of described oil cylinder (16) are hinged, described connecting lever (9) the other end is fixedlyed connected with described upper valve rod (11), oil inlet pipe (23) one ends are connected with the modulating valve (22) of the bottom of described oil cylinder (16), the other end is connected with solenoid directional control valve (26), return tube (24) one ends are connected with described oil cylinder (16), the other end is connected with described solenoid directional control valve (26), and described solenoid directional control valve (26) is connected with hydraulic station (25) with second oil pipe (28) by first oil pipe (27).