CN203641577U - Lifting valve block structure in multi-way valve - Google Patents
Lifting valve block structure in multi-way valve Download PDFInfo
- Publication number
- CN203641577U CN203641577U CN201420049840.2U CN201420049840U CN203641577U CN 203641577 U CN203641577 U CN 203641577U CN 201420049840 U CN201420049840 U CN 201420049840U CN 203641577 U CN203641577 U CN 203641577U
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- valve
- valve body
- way valve
- valve rod
- oil
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Abstract
The utility model provides a lifting valve block structure in a multi-way valve, belongs to the technical field of mechanics, and solves the problem that an existing lifting valve block in the multi-way valve is high in noise and the like. The lifting valve block structure comprises a valve body and a valve stem penetratingly arranged in the valve body, three annular grooves communicated with oil ways are formed in the valve body, steps are arranged between every two annular grooves, the middle portion of the valve stem is a necking section, a protruding annular boss is arranged in the middle of the necking section, and oil draining gaps d which are 8-15 micrometers in size are reserved between the peripheral surface of the annular boss and the steps. The lifting valve block structure has the advantages of simple structure, no generation of noise and the like.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of multi-way valve, particularly descending valve plate structure in a kind of multi-way valve.
Background technique
On domestic existing fork truck, generally use multi-way valve, existing multi-way valve is general to be all made up of the work valve block of the effects such as an oil-feed valve block, oil return valve block and 2 to 4 responsible liftings, inclination, an integrated diverter valve on oil-feed valve block.The working principle of multi-way valve is: when gear oil pump is to oil-feed valve block fuel feeding, first pass through diverter valve, diverter valve is preferentially transported to the split-flow opening on oil-feed valve block by a part of quantitative hydraulic oil, gives the commutator fuel feeding in hydraulic system, meets the use of fork-truck steering; When commutator is idle, this part directly flows back to mailbox by commutator for the fluid of supplying with commutator.Except this part is for supplying with the fluid of commutator, all the other fluid that gear oil pump is supplied with enter work valve block, for the action such as lifting and inclination of forklift door frame.
In existing multi-way valve, descending valve plate comprises valve body and valve rod, valve rod is arranged in valve body, in valve body, there is the San road annular groove that is connected with oil circuit, valve rod middle part is for having the annular boss of protrusion in the middle part of undergauge section and undergauge section, annular boss periphery and the between two step between annular groove are inconsistent, at present for pressure release refluxes, all on valve rod, offer the inclined hole of perforation, one end of inclined hole is positioned at annular boss right side, the other end of inclined hole is positioned at annular boss left side, but in use, inclined hole aperture is little, draining ability is poor, when hydraulic fluid pressure is larger in addition, during by inclined hole, can produce and pipe, noise is large.
Summary of the invention
The purpose of this utility model is for the above-mentioned problems in the prior art, and descending valve plate structure in a kind of multi-way valve that can remove noise is provided.
The purpose of this utility model can realize by following technical proposal: descending valve plate structure in a kind of multi-way valve, comprise valve body and the valve rod that is arranged in valve body, in described valve body, there is the San road annular groove that is connected with oil circuit, between annular groove, there is between two step, described valve rod middle part is for having the annular boss of protrusion in the middle part of undergauge section and undergauge section, it is characterized in that having oil extraction gap d between described annular boss outer circumferential face and step, described oil extraction gap d is 8 to 15 microns.
In this multi-way valve, descending valve plate structure, by the setting of oil extraction gap d, makes hydraulic oil directly carry out oil extraction by oil extraction gap d, and oil extraction process is smooth and easy, can not produce noise, and omitted the processing of inclined hole in the past, and make valve rod easy to process, reduce cost of production.
In above-mentioned multi-way valve in descending valve plate structure, between described valve rod two ends and valve body, be all arranged with seal ring, described valve body both sides are all fixed with the pad being placed on valve rod, and described valve rod two ends are all arranged with the dust ring between pad and seal ring.In multi-way valve in the past, descending valve plate structure is all to guarantee seal ring by seal ring is set, and has ignored dust-proof effect, and in this multi-way valve, descending valve plate structure is by the setting of dust ring, play dustproof effect, avoid dust to enter between valve rod and valve body, avoid stem wear, extended working life.
Compared with prior art, in this multi-way valve, to have oil extraction smooth and easy for descending valve plate structure, can not produce the advantage of noise, and sealing and good dustproof effect, long service life.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of descending valve plate structure in this multi-way valve.
Fig. 2 is the schematic diagram of oil extraction gap d in descending valve plate structure in this multi-way valve.
In figure, 1, valve body; 2, valve rod; 2a, undergauge section; 2b, annular boss; 3, annular groove; 4, step; 5, oil extraction gap d; 6, seal ring; 7, pad; 8, dust ring.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, in this multi-way valve, descending valve plate structure comprises valve body 1 and the valve rod 2 that is arranged in valve body 1, in valve body 1, there is the San road annular groove 3 that is connected with oil circuit, between annular groove 3, there is between two step 4, valve rod 2 middle parts are the annular boss 2b that undergauge section 2a and undergauge section 2a middle part have protrusion, as shown in Figure 2, between annular boss 2b outer circumferential face and step 4, have oil extraction gap d 5, oil extraction gap d 5 is 8 to 15 microns, and in the present embodiment, oil extraction gap is 10 microns.
In this multi-way valve, descending valve plate structure, by the setting of oil extraction gap d 5, makes hydraulic oil directly carry out oil extraction by oil extraction gap d 5, and oil extraction process is smooth and easy, can not produce noise, and omitted the processing of inclined hole in the past, and make valve rod 2 easy to process, reduce cost of production.
Between valve rod 2 two ends and valve body 1, be all arranged with seal ring 6, valve body 1 both sides are all fixed with the pad 7 being placed on valve rod 2, and valve rod 2 two ends are all arranged with the dust ring 8 between pad 7 and seal ring 6.In this multi-way valve, descending valve plate structure, by the setting of dust ring 8, plays dustproof effect, avoids dust to enter between valve rod 2 and valve body 1, avoids valve rod 2 to wear and tear, and has extended working life.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used the terms such as valve body 1, valve rod 2, undergauge section 2a, annular boss 2b, annular groove 3, step 4, oil extraction gap d 5, seal ring 6, pad 7, dust ring 8 herein, do not got rid of the possibility that uses other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (2)
1. descending valve plate structure in a multi-way valve, comprise valve body (1) and be arranged in the valve rod (2) of valve body (1), in described valve body (1), there is the San road annular groove (3) that is connected with oil circuit, between annular groove (3), there is between two step (4), described valve rod (2) middle part is for having the annular boss (2b) of protrusion in the middle part of undergauge section (2a) and undergauge section (2a), it is characterized in that, between described annular boss (2b) outer circumferential face and step (4), have oil extraction gap d (5), described oil extraction gap d (5) is 8 to 15 microns.
2. descending valve plate structure in multi-way valve according to claim 1, it is characterized in that, between described valve rod (2) two ends and valve body (1), be all arranged with seal ring (6), described valve body (1) both sides are all fixed with the pad (7) being placed on valve rod (2), and described valve rod (2) two ends are all arranged with the dust ring (8) being positioned between pad (7) and seal ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420049840.2U CN203641577U (en) | 2014-01-26 | 2014-01-26 | Lifting valve block structure in multi-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420049840.2U CN203641577U (en) | 2014-01-26 | 2014-01-26 | Lifting valve block structure in multi-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203641577U true CN203641577U (en) | 2014-06-11 |
Family
ID=50872822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420049840.2U Expired - Fee Related CN203641577U (en) | 2014-01-26 | 2014-01-26 | Lifting valve block structure in multi-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203641577U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822793A (en) * | 2015-01-28 | 2016-08-03 | 纳博特斯克有限公司 | Direction converter valve |
| CN106885014A (en) * | 2015-09-28 | 2017-06-23 | 纳博特斯克有限公司 | Reversal valve and hydraulic system |
-
2014
- 2014-01-26 CN CN201420049840.2U patent/CN203641577U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822793A (en) * | 2015-01-28 | 2016-08-03 | 纳博特斯克有限公司 | Direction converter valve |
| CN106885014A (en) * | 2015-09-28 | 2017-06-23 | 纳博特斯克有限公司 | Reversal valve and hydraulic system |
| CN106885014B (en) * | 2015-09-28 | 2019-07-16 | 纳博特斯克有限公司 | Reversal valve and hydraulic system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20190126 |