CN201705991U

CN201705991U - Two-position three-way solenoid valve for engine brake system

Info

Publication number: CN201705991U
Application number: CN201020209314XU
Authority: CN
Inventors: 苗建中; 严华真; 龚锐
Original assignee: Guizhou Honglin Machinery Co Ltd
Current assignee: Guizhou Honglin Machinery Co Ltd
Priority date: 2010-05-31
Filing date: 2010-05-31
Publication date: 2011-01-12
Anticipated expiration: 2020-05-31

Abstract

A two-position three-way solenoid valve for an engine brake system belongs to solenoid valves, and consists of an end filter screen, a valve body, an O-shaped ring, a valve seat, a steel ball, a mounting plate, a pole shoe, an armature pipe, a coil shield, a magnetic insulation pad, a spring, a coil assembly and an armature assembly, wherein the stroke of the steel ball (5) is ensured by the pressing position of the valve seat (4) in the valve body (2), so the flow consistency is better guaranteed, the mounting plate (6) adopts a close-up structure, the mounting plate can be directly installed on a coordination module through screws, so the installation and dismantling are convenient, the stroke of the armature assembly (14) and the stroke of the steel ball (5) are relatively separated, so the product debugging is convenient, an oil return opening adopts hydraulic pressure to push the steel ball to seal, so the sealing performance is better, a square groove on the pole shoe is additionally arranged at the oil return opening, so the oil passing capacity of the oil return opening is greatly increased, and the utility model is applicable to the engine brake system.

Description

The two-position three way magnetic valve that is used for engine braking system

Technical field: the utility model relates to solenoid valve, particularly a kind of two-position three way magnetic valve that is used for engine braking system.

Background technique: in engine braking system, there is following defective in switch valve originally;

1. the sealability of return opening is very high to the requirement on machining accuracy of relevant spare part, and the part processing difficulty is big.

2. steel ball is pressed in the armature, and the stroke of armature component is consistent with the stroke of steel ball, need be by Regulation spring to the proper compression amount, and more loaded down with trivial details during the assembling adjusting.

3. the flow of filler opening and return opening is all less, continues to increase flow and can cause solenoid stabilizer valve relatively poor.

4. dismounting is more consuming time when the solenoid valve Installation and Debugging, and need still need the repetition measurement performance after adjusting the nail closing in, and the production debugging cycle is long.

Summary of the invention: the purpose of this utility model is to provide a kind of two-position three way magnetic valve that is used for engine braking system,, it is a kind of switch valve with architecture advances, after architecture advances, the switch valve functional reliability improves greatly, and the spare part difficulty of processing reduces, and rate of fault obviously descends.

Formation of the present utility model: be made up of end filter screen, valve body, O shape circle, valve seat, steel ball, mounting plate, pole shoe, armature pipe, coil housing, magnetic isolating pad, spring, coil block and armature component, the stroke of steel ball guarantees by the position that valve seat is pressed in the valve body; Mounting plate adopts the closing in type structure, the stroke relative separation of the stroke of armature component and steel ball, and return opening adopts hydraulic coupling to promote steel ball sealing, and return opening has increased the square groove on the pole shoe.

Compared with the prior art, improvements of the present utility model are:

1. the closing in type structure of mounting plate is more convenient when test is installed.

2. the relative separation of the stroke of the stroke of armature component and steel ball makes production debugging convenient.

3. return opening adopts hydraulic coupling to promote steel ball sealing, and sealability is better, and difficulty of processing reduces.

4. return opening has increased the square groove on the pole shoe, has increased the through-current capability of return opening greatly.

After architecture advances, switch valve functional reliability described in the utility model improves greatly, and the spare part difficulty of processing reduces, and rate of fault obviously descends.

Description of drawings: Fig. 1 is the utility model structural representation; Fig. 2 is the right elevation of Fig. 1, and Fig. 3 is mounting plates structure figure, and Fig. 4 is the mode of return opening by the oil pressure sealing, and Fig. 5 is the return opening shape on the pole shoe, and Fig. 6 is the right elevation of Fig. 5.

1. end filter screens among the figure, 2. valve body, 3.O shape circle, 4. valve seat, 5. steel ball, 6. mounting plate, 7. pole shoe, 8.O shape circle, 9. armature pipe, 10. coil housing, 11. magnetic isolating pads, 12. springs, 13. coil blocks, 14. armature components.

Embodiment: as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, be made up of end filter screen, valve body, O shape circle, valve seat, steel ball, mounting plate, pole shoe, armature pipe, coil housing, magnetic isolating pad, spring, coil block and armature component, the stroke of steel ball 5 guarantees by the position that valve seat 4 is pressed in the valve body 2; Mounting plate 6 adopts the closing in type structure, the stroke relative separation of the stroke of armature component 14 and steel ball 5, and return opening adopts hydraulic coupling to promote steel ball sealing, and return opening has increased the square groove on the pole shoe.

Claims

1. two-position three way magnetic valve that is used for engine braking system, be made up of end filter screen, valve body, O shape circle, valve seat, steel ball, mounting plate, pole shoe, armature pipe, coil housing, magnetic isolating pad, spring, coil block and armature component, it is characterized in that: the stroke of steel ball (5) guarantees by the position that valve seat (4) is pressed in the valve body (2); Mounting plate (6) adopts the closing in type structure, the stroke relative separation of the stroke of armature component (14) and steel ball (5), and return opening adopts hydraulic coupling to promote steel ball sealing, and return opening has increased the square groove on the pole shoe.