CN202545394U - Secondary valve for electrohydraulic hammer with good sealing structure - Google Patents
Secondary valve for electrohydraulic hammer with good sealing structure Download PDFInfo
- Publication number
- CN202545394U CN202545394U CN2012201021410U CN201220102141U CN202545394U CN 202545394 U CN202545394 U CN 202545394U CN 2012201021410 U CN2012201021410 U CN 2012201021410U CN 201220102141 U CN201220102141 U CN 201220102141U CN 202545394 U CN202545394 U CN 202545394U
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- Prior art keywords
- seal groove
- valve pocket
- valve
- seal
- sealing
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- Expired - Fee Related
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Abstract
The utility model provides a secondary valve for an electrohydraulic hammer with a good sealing structure, which relates to improvement for a structure of the secondary valve for the electrohydraulic hammer. The secondary valve for the electrohydraulic hammer is simple in structure and good in sealing effect, is not easily damaged, and comprises a valve sleeve, wherein front sealing grooves are externally formed at the front end of the valve sleeve; a middle sealing groove is externally formed in the middle of the valve sleeve; a back sealing groove is externally formed at the back end of the valve sleeve; a back block is arranged inside the back end of the valve sleeve; and internal sealing grooves are formed outside the back block. The secondary valve is characterized in that the front sealing grooves are internally provided with rectangle sealing rings that are made from polyurethane material; and the middle sealing groove, the back sealing groove and the internal sealing grooves are all internally provided with sealing rings for Yx type holes, which are made from the polyurethane material.
Description
Technical field
The utility model relates to a kind of improvement of electric liquid hammer secondary valve structure.
Background technique
Integrate mechanical, electrical, gas, the advanced in performance electric liquid hammer of liquid and be to accomplish and hit and action such as backhaul through combination brake switch and proporting control secondary valve program.Secondary valve has unidirectional control, performance such as drain the oil fast, and it is to reduce the loss of draining the oil, and improves the hydraulic control switch of striking frequency and dexterity of action, is the core key control unit of electric liquid hammer performance assurance.
The working principle of secondary valve and sealing present situation thereof: the filler opening of secondary valve communicates with the middle oil pocket of main control valve; When main valve comes high pressure oil, close tap hole rapidly by the control program secondary valve, let high pressure oil get into hammer stem piston cavity of resorption, make the backhaul of tup fast lifting; Secondary valve is opened tap hole rapidly when main valve is drained the oil, and the oil of hammer stem piston cavity of resorption flows back to fuel tank, under pressure and system's action of gravity, makes tup form strike rapidly.
Common secondary valve is as shown in Figure 2, is provided with two zero common type rubber seal 6 at valve pocket 2 front ends, middle part and rear portion, and back the blocking up outside 4 in valve pocket 2 rear ends also is provided with two zero common type rubber seal 6; And zero common type rubber seal 6 is withstand voltage, abrasion-resistance is poor, causes secondary valve using about 20 Working days, just can be washed out by the hydraulic oil impact extrusion; Cause and blend oil temperature sharply rising even equipment alarm in the system.Also occur anxious (hanging) hammer of receiving in the practical operation often and wait action, can bring very strong hydraulic shock, cause the reduction in seal ring life-span to system; Frequent maintain and replace seal ring can make the unit head casing and the intensity of the stifled fixed hole in back reduce, and also can cause seal ring to reduce the life-span.
Summary of the invention
The utility model is exactly to the problems referred to above, provides a kind of simple in structure, good sealing effect, and non-damageable electric liquid hammer secondary valve.
For reaching the above-mentioned purpose of the utility model, the utility model adopts following technological scheme.The utility model comprises valve pocket, and the valve pocket front end is outside equipped with preceding seal groove, and the valve pocket middle part is outside equipped with middle seal groove, and the valve pocket rear end is outside equipped with the back seal groove; It is stifled to be provided with the back in the valve pocket rear end, and the back is blocked up and is outside equipped with interior seal groove, is provided with the rectangular seal of being processed by polyurethane material in the seal groove before its structure outline is described; Be provided with the Yx type hole of processing in middle seal groove, back seal groove and the interior seal groove and use seal ring by polyurethane material.
A kind of preferred version as the utility model: the Yx type hole in described in the seal groove with seal ring by two affixed forming of half-turn; Described valve pocket is made up of preceding valve pocket and back valve pocket two-part, and a side of the sidewall of back seal groove is preceding valve pocket, and the opposite side of back seal groove is the back valve pocket.
The beneficial effect of the utility model: 1, the utility model passes through to optimize the structure and material of seal ring, thus the working life of improving electric liquid hammer secondary valve; It is simple in structure, good sealing effect, 10～12 months no oil leakage phenomenons of use.
2, since the Yx type hole in the middle seal groove of the utility model with seal ring by two affixed forming of half-turn; Therefore, when mounted, can two half rings be placed in the outer middle seal groove of valve pocket, again through the affixed one of quick viscose glue; In addition, because valve pocket valve pocket and back valve pocket two-part before the side-walls of back seal groove is broken as, therefore, the Yx type hole in the back seal groove is easy to be installed in the seal groove of back with seal ring; Easy for installation, quick.
3, because the structural feature of the utility model makes middle seal groove and the Yx type hole in the seal groove of back pack into easily wherein with seal ring, can not make Yx type hole produce plastic deformation, guarantee the sealing effect of Yx type hole with seal ring with seal ring.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of existing electric liquid hammer secondary valve.
In the accompanying drawing 1 for preceding seal groove, 2 for valve pocket, 3 for middle seal groove, 4 stifled for the back, 5 for back seal groove, 6 be zero type rubber seal, 7 for interior seal groove, 8 for rectangular seal, 9 for Yx type hole uses seal ring, 10 for after valve pocket, 11 be jackscrew for preceding valve pocket, 12 as end cap, 13.
Embodiment
The utility model comprises valve pocket 2, and valve pocket 2 front ends are outside equipped with preceding seal groove 1, and valve pocket 2 middle parts are outside equipped with middle seal groove 3, and valve pocket 2 rear ends are outside equipped with back seal groove 5; Be provided with the back in valve pocket 2 rear ends and block up 4, seal groove 7 in back stifled 4 is outside equipped with is provided with the rectangular seal of being processed by polyurethane material 8 in the seal groove 1 before its structure outline is described; In be provided with the Yx type hole of processing in the seal groove 3, back seal groove 5 and interior seal groove 7 with seal ring 9 by polyurethane material.
A kind of preferred version as the utility model: the Yx type hole in described in the seal groove 3 with seal ring 9 by two affixed forming of half-turn; Described valve pocket 2 is made up of preceding valve pocket 11 and back valve pocket 10 two-part, and a side of the sidewall of back seal groove 5 is preceding valve pocket 11, and the opposite side of back seal groove 5 is a back valve pocket 10.
The model of described polyurethane can be: AU92 (can purchase from market).
Embodiment: 1, preceding seal groove is 1 two, is of a size of wide by 4 * dark 3.8mm.
3 one of middle seal grooves are of a size of wide by 13 * dark 7mm.
5 one of back seal grooves are of a size of wide by 13 * dark 8mm, and a side-walls of back seal groove 5 cut off with the line cutting be divided into before valve pocket 11 with after valve pocket 10.
7 two of the interior seal grooves of back stifled 4 are wide by 7.5 * dark 4mm.
2, the rectangular seal 8 in the preceding seal groove 1, specification: internal diameter 110 * external diameter 118 * width 4mm.
Yx type hole in middle seal groove 3 and the back seal groove 5 is with seal ring 9, and specification: Yx type D120 hole is with seal ring 9 (φ 120/100 * 12).
Yx type hole in the interior seal groove 7 is with seal ring 9, and specification: Yx type D95 hole is with seal ring 9 (φ 95/85 * 6.7).
During use, preceding valve pocket 11 holds out against through end cap 12 and jackscrew 13 with back valve pocket 10 and is one.
Claims (2)
1. the electric liquid hammer secondary valve that sealing configuration is good comprises valve pocket (2), and valve pocket (2) front end is outside equipped with preceding seal groove (1), and valve pocket (2) middle part is outside equipped with middle seal groove (3), and valve pocket (2) rear end is outside equipped with back seal groove (5); Be provided with back stifled (4) in valve pocket (2) rear end, back stifled (4) are outside equipped with interior seal groove (7), it is characterized in that: be provided with the rectangular seal of being processed by polyurethane material (8) in the seal groove (1) before described; In be provided with the Yx type hole of processing in the seal groove (3), back seal groove (5) and interior seal groove (7) with seal ring (9) by polyurethane material.
2. the electric liquid hammer secondary valve that a kind of sealing configuration according to claim 1 is good is characterized in that: the Yx type hole in described in the seal groove (3) with seal ring (9) by two affixed forming of half-turn; Described valve pocket (2) is made up of preceding valve pocket (11) and back valve pocket (10) two-part, and a side of the sidewall of back seal groove (5) is preceding valve pocket (11), and the opposite side of back seal groove (5) is a back valve pocket (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201021410U CN202545394U (en) | 2012-03-19 | 2012-03-19 | Secondary valve for electrohydraulic hammer with good sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201021410U CN202545394U (en) | 2012-03-19 | 2012-03-19 | Secondary valve for electrohydraulic hammer with good sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545394U true CN202545394U (en) | 2012-11-21 |
Family
ID=47166036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201021410U Expired - Fee Related CN202545394U (en) | 2012-03-19 | 2012-03-19 | Secondary valve for electrohydraulic hammer with good sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545394U (en) |
-
2012
- 2012-03-19 CN CN2012201021410U patent/CN202545394U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20150319 |
|
| EXPY | Termination of patent right or utility model |