CN204372229U - A kind of fluid regeneration valve - Google Patents
A kind of fluid regeneration valve Download PDFInfo
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- CN204372229U CN204372229U CN201420794942.7U CN201420794942U CN204372229U CN 204372229 U CN204372229 U CN 204372229U CN 201420794942 U CN201420794942 U CN 201420794942U CN 204372229 U CN204372229 U CN 204372229U
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- oil duct
- overflow hole
- abdominal cavity
- oil
- main valve
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Abstract
The utility model relates to a kind of fluid regeneration valve, comprises valve body and is arranged on the main valve plug in valve body; Valve body is provided with filler opening, actuator port A, actuator port B, return opening, the first oil duct, the second oil duct, the 3rd oil duct and the 4th oil duct; The overflow hole that main valve plug comprises abdominal cavity and is connected with abdominal cavity, overflow hole comprises left overflow hole and right overflow hole, and left overflow hole communicates with the second oil duct, and right overflow hole communicates with the 3rd oil duct; When inner spool moves right in abdominal cavity, the hydraulic oil realized in the 3rd oil duct flows to the second oil duct by right overflow hole, abdominal cavity and left overflow hole successively.The utility model makes a part for output fluid enter into the first oil duct by the effect of inner spool to recycle, and whole process improves energy utilization rate, reduces cost.Avoid the Caton phenomenon that work oilhole fuel feeding is not enough and cause thus simultaneously, greatly improve travelling comfort and the reliability of digging machine operation.
Description
Technical field
The utility model relates to a kind of fluid regeneration valve, belongs to hydraulic power technical field.
Background technique
Mini-excavator is a kind of widely used small-sized machine, has that efficiency is high, complete function, a handling feature such as good.Load moment change suffered by its equipment, load acts on oil hydraulic cylinder, bears various operating mode by oil hydraulic cylinder.When swing arm or dipper accelerate under gravity, oil hydraulic cylinder oil-feed side there will be flow undersupply, and then brings the problem such as working efficiency reduction and coordination difference.According to the power P=pQ of hydraulic jack, the work area of oil cylinder piston is certain, the pressure p of the hydraulic oil of input oil cylinder is certain, oil mass Q is constant, then the power stage of oil cylinder is constant, and when scraper bowl working resistance becomes large, then lifting speed is slow, and the situation of excavator is directly connected to manufacturing efficiency, the reduction of working efficiency, even brings interests to lose.In existing excavator technology, oil cylinder exports side and is directly connected with return opening, and this part fluid can not get sufficient utilization, causes to there is dipper or boom cylinder is short of power, cannot normally work or occur Caton phenomenon under operating mode rugged environment, and energy loss be more serious.
Chinese patent literature CN203784366U discloses a kind of mini-excavator flow regeneration valve, this flow regeneration valve comprises work valve body, the main valve plug of work valve body has the hole being through to middle part from left side, one-way valve A and one-way valve B is disposed with in described hole, two one-way valves all have through hole, the right-hand member of one-way valve A is pressed on main valve plug, left end is connected with the right-hand member of soft spring, the left end of soft spring is connected with the right-hand member of one-way valve B, the left end of one-way valve B is connected with the right-hand member of hard spring, the left end of described hard spring is pressed on the plug on the left of main valve plug, the left end of hard spring is pressed on the plug on the left of main valve plug, main valve plug from left to right has oil-return groove successively, circumferential apertures and flow regeneration hole.This flow regeneration valve improves regenerability by the mode arranging two one-way valves and soft or hard spring in main valve plug, swing arm or dipper is fallen steadily and relatively energy-conservation.But this flow regeneration valve structural design relative complex, structural volume is large.
Chinese patent literature CN102864798A provides a kind of bucket rod regeneration structure and excavator, this bucket rod regeneration structure comprises regeneration spool, regeneration function spool, the first valve block and the second valve block, the first valve block is formed with the first chamber be connected with the rod chamber of bucket arm cylinder and the second chamber be connected with the rodless cavity of bucket arm cylinder; Second valve block is formed with the 3rd chamber be connected with the first chamber and the 4th chamber be connected with fuel tank, also comprise one in order to detect the pressure-detecting device of the second chamber pressure, pressure-detecting device comprises an effect end and an elastic member, the collapsible part controlled by pilot pressure.This device automatically can realize regeneration according to the pressure of rodless cavity and open and close, and can eliminate the shake of excavator when level land action.But this device working procedure is more complicated, and the designing requirement of valve body is higher, assemble more difficult.
Therefore, be necessary to design a kind of structure simple, stable, fluid regeneration valve easy to install, to utilize and the dipper work problem such as to be obstructed provides more selection for existing mini-excavator solves fluid.
Model utility content
For the deficiencies in the prior art, the utility model provides a kind of fluid regeneration valve.
The technical solution of the utility model is as follows:
A kind of fluid regeneration valve, comprises valve body and is arranged on the main valve plug in valve body; Described valve body is provided with filler opening, actuator port A, actuator port B, return opening, the first oil duct, the second oil duct, the 3rd oil duct and the 4th oil duct; The overflow hole that described main valve plug comprises abdominal cavity and is connected with abdominal cavity, described overflow hole comprises left overflow hole and right overflow hole, and described left overflow hole communicates with the second oil duct, and described right overflow hole communicates with the 3rd oil duct; Inner spool, spring, bumping post and plug is disposed with from left to right in described abdominal cavity; Described inner spool is provided with a hollow cavity, described hollow cavity is connected with abdominal cavity by the through hole that runs through inner spool, described spring is arranged in hollow cavity, described inner spool and abdominal cavity form sealing configuration, when inner spool moves right in abdominal cavity, the hydraulic oil realized in the 3rd oil duct flows to the second oil duct by right overflow hole, abdominal cavity and left overflow hole successively.
Preferably, the profile in described abdominal cavity is arranged in stepped shaft, and described abdominal cavity comprises the first chamber, the second chamber and the 3rd chamber, and described inner spool to be arranged on the right side of the first chamber and to seal the first chamber.The advantage of this design is, be arranged on the right side of the first chamber by inner spool and block the first chamber, the first chamber and the second chamber are isolated, when inner spool moves right, first chamber communicates with the second chamber and forms one, realizes fluid regeneration function with this.
Preferably, described inner spool comprise set gradually from left to right front end tapered portion, intermediate recess portion and end main part, by described front end tapered portion shutoff first chamber to form cone sealing configuration.Advantage of this design is, cone sealing configuration can make the front end tapered portion of inner spool extend in the first chamber to be formed and be sealed and matched the most closely, and sealing effect is best.
Preferably, the aperture of described overflow hole is 1.2cm-1.8cm.
Preferably, the quantity of described left overflow hole is 6-8, and described left overflow hole is evenly distributed on main valve plug outer surface and axially circumferentially arranges around described main valve plug; The quantity of described right overflow hole is 7-9, and described right overflow hole is evenly distributed on main valve plug outer surface, and axially circumferentially arranges around described main valve plug.
Preferably, described main valve plug also comprises the first circular groove and the second circular groove that are arranged on main valve plug outer surface, when main valve plug moves right, realize communicating of the first oil duct and actuator port A by the first circular groove, realize communicating of the 3rd oil duct and the 4th oil duct by the second circular groove.
Preferably, described valve body is also provided with one-way valve, described one-way valve enters into the second oil duct in order to the hydraulic oil realizing filler opening and stops the hydraulic oil of the second oil duct to flow into filler opening.Advantage of this design is, one-way valve play unidirectional cross oil oppositely by effect, when the hydraulic oil of the 3rd oil duct realize regeneration function enter into the second oil duct time, prevent the hydraulic oil of the second oil duct from flowing into filler opening.
The beneficial effects of the utility model are:
1, the utility model enters into the first oil duct by making a part export oil, achieving part output oil regeneration circulation enters in the first oil duct, avoid the Caton phenomenon that actuator port A supplies shortage of oil and causes thus, greatly improve travelling comfort and the reliability of digging machine operation.
2, the utility model makes a part of hydraulic oil be back in oil cylinder enter into the first oil duct by overflow hole by the effect of inner spool, while making the pressure in the first oil duct identical with the pressure of work oilhole, make use of the hydraulic oil of part backflow, improve whole valve energy utilization rate in the course of the work, reduce cost.
3, the utility model design concept is ingenious, and structure is simple, and by arranging inner spool in main valve plug, reasonable utilization spatial structure, decrease the overall volume of a whole set of valve body, obviously, Be very effective, has good economic benefit and social benefit in its effect.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the utility model fluid regeneration valve;
Fig. 2 is the utility model fluid regeneration valve working principle schematic diagram;
Fig. 3 is the structural representation of main valve plug in the utility model fluid regeneration valve;
Fig. 4 is the structural representation of inner spool in the utility model fluid regeneration valve;
Structural representation when Fig. 5 is main valve plug and inner spool assembling in the utility model.
Wherein: 1, main valve plug, 2, valve body, 3, inner spool, 4, spring, 5, bumping post, 6, plug, 7, left overflow hole, 8, actuator port A, 9, second oil duct, 10, filler opening, 11, actuator port B, 12, return opening, 13, right overflow hole, 14, hollow cavity, 15, through hole, 16, intermediate recess portion, 17, shoulder, 18, end main part, 19, first oil duct, 20, 3rd oil duct, 21, 4th oil duct, 22, one-way valve, 23, front end tapered portion, 24, first chamber, 25, first circular groove, 26, second circular groove, 27, second chamber, 28, 3rd chamber.
Embodiment
Also by reference to the accompanying drawings the utility model is described further below by embodiment, but is not limited thereto.
Embodiment 1:
As shown in Figure 1, a kind of fluid regeneration valve that the utility model provides, the main valve plug 1 comprising valve body 2 and be arranged in valve body 2; Valve body 2 is provided with filler opening 10, actuator port A8, actuator port B11, return opening 12, first oil duct 19, second oil duct 9, the 3rd oil duct 20 and the 4th oil duct 21; The overflow hole that main valve plug 1 comprises abdominal cavity and is connected with abdominal cavity, overflow hole comprises left overflow hole 7 and right overflow hole 13, and left overflow hole 7 communicates with the second oil duct 9, and right overflow hole 13 communicates with the 3rd oil duct 20; Inner spool 3, spring 4, bumping post 5 and plug 6 is disposed with from left to right in described abdominal cavity; Inner spool 1 is provided with a hollow cavity 14, hollow cavity 14 is connected with abdominal cavity by the through hole 15 that runs through inner spool, spring 4 is arranged in hollow cavity 14, inner spool 3 and abdominal cavity form sealing configuration, when inner spool 3 moves right in abdominal cavity, the hydraulic oil realized in the 3rd oil duct 20 flows to the second oil duct 9 by right overflow hole 13, abdominal cavity and left overflow hole 7 successively.
Wherein, actuator port A8 communicates with the first oil duct 19, actuator port B11 communicates with the 3rd oil duct 20, driven external equipment is connected between actuator port A8 and actuator port B11, namely from actuator port A8 fuel feeding to external equipment, after external equipment is driven rear hydraulic oil to enter the 3rd oil duct 20 and the 4th oil duct 21 by actuator port B11 output, enter by return opening 12 working procedure that fuel tank completes whole valve, the working principle of its valve as shown in Figure 2.
As shown in Figure 3, abdominal cavity to be opened on the center line of main valve plug 1 and is communicated with the right-hand member of main valve plug 1, the profile in abdominal cavity arranges in stepped shaft, abdominal cavity comprises the first chamber 24, second chamber 27 and the 3rd chamber 28 that diameter from left to right increases successively, and inner spool 3 to be arranged on the right side of the first chamber 24 and to seal the first chamber 24.
As shown in Figure 4, inner spool 3 comprise set gradually from left to right front end tapered portion 23, intermediate recess portion 16 and end main part 18, wherein through hole 15 run through be arranged on inner spool 3 center line on, hollow cavity 14 is positioned at end main part 18.By described front end tapered portion 23 shutoff first chamber 24 to form cone sealing configuration, cone sealing configuration can make the front end tapered portion 23 of inner spool 3 extend in the first chamber 24 to be formed and be sealed and matched the most closely, sealing effect is best, and the cooperating structure of inner spool 3 and main valve plug 1 as shown in Figure 5.Hydraulic oil in 3rd oil duct 20 to be entered in the second chamber 27 by right overflow hole 13 and is stored in intermediate groove portion 16, and after cone sealing configuration is opened, the hydraulic oil in intermediate recess portion 16 just can enter in the first chamber 24.
The aperture of overflow hole is 1.2cm.The quantity of left overflow hole 7 is 6, left overflow hole 7 is evenly distributed on main valve plug 1 outer surface, and axially circumferentially arrange around main valve plug, before main valve plug 1 moves to right or after moving to right, all to ensure that the position of left overflow hole 7 is in the pore diameter range of the second oil duct 9, ensure that left overflow hole 7 communicates with the second oil duct 9 all the time; The quantity of right overflow hole 13 is 7, right overflow hole 13 is evenly distributed on main valve plug 1 outer surface, and axially circumferentially arrange around main valve plug, before main valve plug 1 moves to right or after moving to right, all to ensure that the position of right overflow hole 13 is in the pore diameter range of the 3rd oil duct 20, ensure that right overflow hole 13 communicates with the 3rd oil duct 20 all the time.The position of the left overflow hole of such design 7 and right overflow hole 13 is that the oil in the 3rd oil duct 20 is entered in the second chamber 27 by right overflow hole 13 in order to ensure that the oil in the second oil duct 9 can enter in the first chamber 24 by left overflow hole 7.
Main valve plug 1 also comprises the first circular groove 25 and the second circular groove 26, first circular groove 25 that are arranged on main valve plug outer surface and the second circular groove 26 matches with valve body 2 internal structure respectively, plays the effect opening or closing oil duct; When main valve plug 1 moves right, realize communicating of the first oil duct 19 and actuator port A8 by the first circular groove 25, realize communicating of the 3rd oil duct 20 and the 4th oil duct 21 by the second circular groove 26.
Embodiment 2:
A kind of fluid regeneration valve that the utility model provides, structure as described in Example 1, its difference is, valve body 2 is also provided with one-way valve 22, and one-way valve 22 enters into the second oil duct 9 in order to the hydraulic oil realizing filler opening 10 and the hydraulic oil of the second oil duct 9 can be stoped to flow into filler opening 10.One-way valve 22 play unidirectional cross oil oppositely by effect, when the hydraulic oil of the 3rd oil duct 20 realize regeneration function enter into the second oil duct 9 time, can prevent the hydraulic oil of the second oil duct 9 from flowing into filler opening 10.
Embodiment 3:
A kind of fluid regeneration valve that the utility model provides, as described in Example 1, its difference is structure, and the aperture of overflow hole is 1.8cm, and the quantity of left overflow hole 7 is 8, and the quantity of right overflow hole 13 is 9.
The method of work of this fluid regeneration valve of concrete use, comprises the steps,
(1) when main valve plug 1 left end leads to guide oil, guide oil promotes main valve plug 1 and moves right, make the first circular groove 25 on main valve plug 1 get through the first oil duct 19 and make communicating of actuator port A8 and the first oil duct 19, the second circular groove 26 realizes communicating of the 3rd oil duct 20 and the 4th oil duct 21;
(2) to filler opening 10 input hydraulic pressure oil, hydraulic oil enters into the first oil duct 19 and the second oil duct 9 by one-way valve 22, hydraulic oil in second oil duct 9 enters in the first chamber 24 by the left overflow hole 7 on main valve plug 1, and the hydraulic oil in the first chamber 24 enters in the hollow cavity 14 of inner spool by through hole 15; Exported by actuator port B11 after hydraulic oil in first oil duct 19 flows through actuator port A8 and external equipment and enter into the 3rd oil duct 20, hydraulic oil in a 3rd oil duct 20 wherein part to be entered in the second chamber 27 by right overflow hole 13 and is stored in intermediate recess portion 16, and wherein another part hydraulic oil flows to the second circular groove 26 and the 4th oil duct 21 enters into fuel tank by return opening 12 successively; Be greater than the active force of inner spool outer surface hydraulic oil under the pressure effect of now inner spool 3 hydraulic oil in spring force and hollow cavity, front end tapered portion 23 shutoff first chamber of inner spool forms cone sealing configuration;
(3) when the first oil duct 19 is for shortage of oil, now the oil pressure of actuator port B11 is greater than the oil pressure of actuator port A8, oil pressure in oil pressure in 3rd oil duct 20 and the second oil duct 9 forms pressure reduction, can be obtained (wherein by formula F=P/A, F represents power, P represents pressure, A represents cross-section area), cross-section area is constant, the size of power is along with pressure P change, the hydraulic fluid pressure of inner spool 3 outer surface is greater than hydraulic fluid pressure in inner spool hollow cavity, under the effect of inside and outside differential pressure, the hydraulic oil promotion inner spool 3 acting on inner spool 3 outer surface shoulder 17 place overcomes spring 4 resistance and moves right,
(4) after inner spool 3 moves right, the cone sealing configuration that the front end tapered portion 23 of inner spool and the first chamber 24 are formed is opened, hydraulic oil now in the 3rd oil duct 20 flows to the second oil duct 9 by right overflow hole 13, second chamber 27, first chamber 24 and left overflow hole 7 successively, enter into the first oil duct 19 by the second oil duct 9 again, realize fluid regeneration.
The utility model fluid regeneration valve exports oil backflow regeneration by utilizing a part, and enter in the first oil duct, solve the problem of actuator port A for shortage of oil, operating steadily of the external equipment made (swing arm of excavator or dipper), work is smooth.This method of work is practical, and effect obviously, had both solved the Caton phenomenon that external equipment cannot normally work or occur, and turn improved energy utilization rate, decrease energy loss.
Claims (7)
1. a fluid regeneration valve, is characterized in that, comprises valve body and is arranged on the main valve plug in valve body; Described valve body is provided with filler opening, actuator port A, actuator port B, return opening, the first oil duct, the second oil duct, the 3rd oil duct and the 4th oil duct; The overflow hole that described main valve plug comprises abdominal cavity and is connected with abdominal cavity, described overflow hole comprises left overflow hole and right overflow hole, and described left overflow hole communicates with the second oil duct, and described right overflow hole communicates with the 3rd oil duct; Inner spool, spring, bumping post and plug is disposed with from left to right in described abdominal cavity; Described inner spool is provided with a hollow cavity, described hollow cavity is connected with abdominal cavity by the through hole that runs through inner spool, described spring is arranged in hollow cavity, described inner spool and abdominal cavity form sealing configuration, when inner spool moves right in abdominal cavity, the hydraulic oil realized in the 3rd oil duct flows to the second oil duct by right overflow hole, abdominal cavity and left overflow hole successively.
2. fluid regeneration valve as claimed in claim 1, is characterized in that, the profile in described abdominal cavity is arranged in stepped shaft, and described abdominal cavity comprises the first chamber, the second chamber and the 3rd chamber, and described inner spool to be arranged on the right side of the first chamber and to seal the first chamber.
3. fluid regeneration valve as claimed in claim 2, is characterized in that, described inner spool comprise set gradually from left to right front end tapered portion, intermediate recess portion and end main part, bore sealing configuration by described front end tapered portion shutoff first chamber to be formed.
4. fluid regeneration valve as claimed in claim 1, it is characterized in that, the aperture of described overflow hole is 1.2cm-1.8cm.
5. fluid regeneration valve as claimed in claim 1, is characterized in that, the quantity of described left overflow hole is 6-8, and described left overflow hole is evenly distributed on main valve plug outer surface, and axially circumferentially arranges around described main valve plug; The quantity of described right overflow hole is 7-9, and described right overflow hole is evenly distributed on main valve plug outer surface, and axially circumferentially arranges around described main valve plug.
6. fluid regeneration valve as claimed in claim 1, it is characterized in that, described main valve plug also comprises the first circular groove and the second circular groove that are arranged on main valve plug outer surface, when main valve plug moves right, realize communicating of the first oil duct and actuator port A by the first circular groove, realize communicating of the 3rd oil duct and the 4th oil duct by the second circular groove.
7. fluid regeneration valve as claimed in claim 1 or 2, is characterized in that, described valve body is also provided with one-way valve, and described one-way valve enters into the second oil duct in order to the hydraulic oil realizing filler opening and stops the hydraulic oil of the second oil duct to flow into filler opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420794942.7U CN204372229U (en) | 2014-12-15 | 2014-12-15 | A kind of fluid regeneration valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420794942.7U CN204372229U (en) | 2014-12-15 | 2014-12-15 | A kind of fluid regeneration valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204372229U true CN204372229U (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420794942.7U Expired - Fee Related CN204372229U (en) | 2014-12-15 | 2014-12-15 | A kind of fluid regeneration valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN204372229U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455548A (en) * | 2014-12-15 | 2015-03-25 | 山东华伟液压设备制造有限公司 | Oil regenerating valve and working method thereof |
-
2014
- 2014-12-15 CN CN201420794942.7U patent/CN204372229U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455548A (en) * | 2014-12-15 | 2015-03-25 | 山东华伟液压设备制造有限公司 | Oil regenerating valve and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Jinan town airport 250017 Licheng District in Shandong province Ji'nan City Road West Patentee after: SHANDONG HUAWEI HYDRAULIC TECHNOLOGY CO., LTD. Address before: Jinan town airport 250017 Licheng District in Shandong province Ji'nan City Road West Patentee before: SHANDONG HUAWEI HYDRAULIC EQUIPMENT MANUFACTURING CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20161215 |
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| CF01 | Termination of patent right due to non-payment of annual fee |