CN201013683Y

CN201013683Y - Hand-driven change valve

Info

Publication number: CN201013683Y
Application number: CN 200720067896
Authority: CN
Inventors: 袁才富; 朱剑根; 陈长信; 周显宏
Original assignee: Shanghai Lixin Hydraulic Co Ltd
Current assignee: Shanghai Lixin Hydraulic Co Ltd
Priority date: 2007-03-16
Filing date: 2007-03-16
Publication date: 2008-01-30
Anticipated expiration: 2017-03-16

Abstract

A manually operated directional valve includes a valve body, a front cover and a rear cover installed in the front and the back of the valve body, a valve spool assembly installed within the valve body, and a handle installed on the front cover and drive valve spool assembly by a hinge axis and a pin driving valve core assembly, which is characterized in that the hinge axis has two circle seal grooves covered by a seal loop, and the seal loop is covered by a seal sliding ring, and a main hole at one end of the valve body is a threaded hole that can be suitable for threaded coupling electromagnet.

Description

A kind of hand-operated direction valve

Technical field

The utility model relates to technical field of hydraulic, concrete relates to a kind of hydraulic manual selector valve.

Background technique

Often use hand-operated direction valve in the hydraulic control system, be used for manually controlling the flow direction of hydraulic oil.Hand-operated direction valve of the prior art generally comprises valve body 1 ' as shown in Figure 1, the control spool 3 ' of valve body 1 ' inside, the Returnning spring at control spool 3 ' two ends, and control spool 3 ' movable handle 2 '.Valve body 1 ' main aperture two ends are the unthreaded hole structure, and are not general with the valve body that the electromagnet that is threaded matches.Handle 2 ' hinge axis 21 ' locates generally to adopt O-ring seals 22 ', but handle 2 ' commutation resistance is very big like this, when back pressure increases, the resistance of seal ring 22 ' also increases thereupon, hand-operated direction valve for spring reset, the not well phenomenon that resets sometimes, and seal ring weares and teares easily, influences the working life of valve.

The model utility content

Technical problem to be solved in the utility model is that the defective that overcomes prior art provides a kind of valve body highly versatile, and commutation is flexible, the nonabradable a kind of hand-operated direction valve of seal ring.

In order to address the above problem, the technical solution of the utility model is such:

A kind of hand-operated direction valve, comprise valve body, be installed in the protecgulum and the bonnet on both sides, valve body front and back, and the Spool assembly that valve inner is set, be arranged on the protecgulum and the actuating valve core assembly in the handle of valve core movement, described handle drives the valve core assembly by hinge axis and pin, it is characterized in that having the twice annular seal groove on the described hinge axis, be with seal ring on the circular groove, be with the sealing slip ring on the seal ring.

The tapped hole of described valve body one end main aperture for matching with the electromagnet that is threaded.

Compared with prior art, the utility model can make the valve body versatility strengthen, and the commutation flexibility of valve improves, and has reduced the commutation resistance of handle, better reduction, and seal ring is not easy to wear, has prolonged the working life of valve.

Description of drawings

Describe the utility model in detail below in conjunction with the drawings and specific embodiments;

Fig. 1 is the structural representation of existing hand-operated direction valve;

Fig. 2 is the handle arrangement schematic representation of existing hand-operated direction valve;

Fig. 3 is the structural representation of a kind of hand-operated direction valve of the utility model;

Fig. 4 is the plan view of Fig. 3;

Fig. 5 is the handle arrangement schematic representation of a kind of hand-operated direction valve of the utility model.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

Referring to Fig. 3, Fig. 4, cartridge spool 15 in the main aperture in the valve body 14; Valve body 14 left ends dress protecgulum 2 and seal ring 11, fixing by 3 screws 18; The boss of protecgulum 2 cooperates with the path of valve body 14 left end tapped holes; Valve body 14 right-hand members dresses blind nut 17 and seal ring 11, valve body 14 and blind nut 17 are connected by screw thread.

Blind nut 17 built-in springs 10 and spring seat 16, spring 10 left ends are pushed down spool 15, right-hand member pressing spring seat 16.

Protecgulum 2 has vertical blind hole, interior dress push rod 5 and spring 10.

Push rod 5 has groove near right-hand member, dress back-up ring 12 in the groove, and back-up ring 12 blocks spring seat 13, makes spring seat 13 be enclosed within on the push rod 5 not deviate from.

Protecgulum 2 has horizontal penetration hole, in hinge the axle 3.In the middle of the hinge axis 3 radial hole is arranged, interior dress pin 4, selling 4 bottoms has spheroid to be stuck in the radial hole of push rod 5.

Below the protecgulum 2 tapped hole is arranged, interior dress blind nut 9 and seal ring 8, blind nut 9 pressing springs 7, spring 7 pressing spring seats 6, there is sphere spring seat 6 upper ends, are stuck in the circular groove of push rod 5.Spring 7 and spring seat 6 only use in the pattern of band positioning means, need not in the spring reset pattern.

Referring to Fig. 5, an end of hinge axis 3 has large cylinder, and large cylinder has radial hole, and interior dress handle 1 is fixing with screw 21.

Hinge axis 3 has two annular seal grooves 31, and seal ring 19 and sealing slip ring 20 are installed, and is with seal ring 19 on the circular groove 31, is with sealing slip ring 20 on the seal ring 19.Slip ring 20 adopts the superhardness polyurethane material to make, and friction factor is low, and the commutation resistance is little, and commutation can be kept flexibly, and wear resistance is good, but elastic compensating leaks thereby effectively reduce.

During work:

Figure 3 shows that a kind of spool 15 of path pattern, spool 15 is subjected to two ends spring force and positioning means effect to be in the centre of valve body, and the oil circuit path is: P, A, B, T cut off mutually.For band positioning means pattern, this moment, the sphere of spring seat 6 was stuck in the interfix groove of push rod 5.

Push away to the right as handle 1, then handle 1 drive hinge axis 3 and pin 4 turn clockwise, and pulling push rod 5, spring seat 13 move to left, and spool 15 moves to left under the thrust of right-hand member spring 10, and the oil circuit path is: P leads to A, and B leads to T.For band positioning means pattern, this moment, the sphere of spring seat 6 was stuck in the right locating slot of push rod 5.

Push away left as handle 1, then handle 1 drive hinge axis 3 and pin 4 are rotated counterclockwise, and promotion push rod 5, spool 15 move to right, and the oil circuit path is: P leads to B, and A leads to T.For band positioning means pattern, this moment, the sphere of spring seat 6 was stuck in the left locating slot of push rod 5.

More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. hand-operated direction valve, comprise valve body, be installed in the protecgulum and the bonnet on both sides, valve body front and back, and the Spool assembly that valve inner is set, be arranged on the protecgulum and the actuating valve core assembly in the handle of valve core movement, described handle is characterized in that having the twice annular seal groove on the described hinge axis by hinge axis and pin actuating valve core assembly, be with seal ring on the circular groove, be with the sealing slip ring on the seal ring.

2. a kind of hand-operated direction valve according to claim 1 is characterized in that, the tapped hole of described valve body one end main aperture for matching with the electromagnet that is threaded.