CN204140099U - A kind of insertion liquid pressure valve - Google Patents
A kind of insertion liquid pressure valve Download PDFInfo
- Publication number
- CN204140099U CN204140099U CN201420446516.4U CN201420446516U CN204140099U CN 204140099 U CN204140099 U CN 204140099U CN 201420446516 U CN201420446516 U CN 201420446516U CN 204140099 U CN204140099 U CN 204140099U
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- valve
- spool
- core assembly
- seat
- valve body
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Abstract
The utility model relates to a kind of insertion liquid pressure valve, belongs to hydraulic valve technical field; The technical problem solved there is provided that a kind of spool is little, easy to maintenance, the insertion liquid pressure valve of good seal performance, employing two-stage unloading; The technical scheme adopted is: a kind of insertion liquid pressure valve, valve body and core assembly, core assembly is actively plugged in valve body, and one end of core assembly withstands in valve body, the other end of core assembly is provided with end bell and spigot joint, and one end of end bell and spigot joint to be inserted in valve body and to be compressed by core assembly; End bell and spigot joint is provided with the first damping hole be connected with core assembly inside, valve body is provided with inlet and liquid outlet, inlet is communicated with the liquid storage cylinder of core assembly by the first delivery hole, and liquid outlet is communicated with the first valve core inside of core assembly by being arranged on the second delivery hole on valve pocket; The utility model can be widely used in hydraulic valve field.
Description
Technical field
A kind of insertion liquid pressure valve of the utility model, belongs to hydraulic valve technical field.
Background technology
Research and development large discharge plug-in the valve for roof support is that the ubiquitous problem of existing insertion liquid pressure valve is that spool is excessive, maintenance difficult in order to meet the market demand day by day changed, and sealing unreliable, unloading is that withdrawing fluid pressure is excessive, forms fluid power and impacts.
Utility model content
The utility model overcomes the deficiency that prior art exists, and provides that a kind of spool is little, easy to maintenance, the insertion liquid pressure valve of good seal performance, employing two-stage unloading.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of insertion liquid pressure valve, comprise valve body and core assembly, described core assembly is actively plugged in valve body, one end of described core assembly withstands in valve body, the other end of described core assembly is provided with end bell and spigot joint, and one end of described end bell and spigot joint to be inserted in valve body and to be compressed by core assembly;
The structure of described core assembly is: comprise push rod, first spring, cover for seat, first valve seat, second valve seat, first spool, second spool, second spring, core retainer plate and valve pocket, the mutual plug-in formation in one end of described cover for seat and one end of valve pocket housing, described push rod is actively plugged on the other end of cover for seat, described first spring housing is contained on push rod for making push rod reset, the relevant position of described cover for seat and valve pocket is provided with the first delivery hole, described first valve seat is arranged in valve pocket, described first valve seat is pressed on valve pocket by cover for seat, described first spool is movably arranged in valve pocket, described first spool and valve pocket matched in clearance, described first spool and the first valve seat cone match, described second valve seat and core retainer plate are fixedly installed in the first spool, described second spool and the second spring are positioned at core retainer plate, described second spool runs through the first spool, described second spool and the second valve seat cone match, described second spring is between the second spool and valve pocket, described second spring is used for making the second valve core reset, formation liquid storage cylinder between described second spool and push rod,
Described end bell and spigot joint is provided with the first damping hole be connected with core assembly inside, described valve body is provided with inlet and liquid outlet, described inlet is communicated with the liquid storage cylinder of core assembly by the first delivery hole, and described liquid outlet is communicated with the first valve core inside of core assembly by being arranged on the second delivery hole on valve pocket.
The end of described valve pocket is provided with the second damping hole, and the first spool is connected with the connecting hole be arranged on valve body by described second damping hole, and described connecting hole is used for being connected with safety valve.
Described valve body and end bell and spigot joint are provided with control mouth, and described control mouth is all connected with the first damping hole.
The cooperation place of described core assembly and end bell and spigot joint and valve body is provided with multiple-sealed circle.
The utility model compared with prior art has following beneficial effect.
1, the utility model adopts integral plugged formula structure, is made up of valve body and core assembly, and the weight of core assembly is only 1/5 of whole hydraulic control one-way valve gross weight, only need change core assembly during maintenance, easy to maintenance.
2, sealing of the present utility model is reliable, valve body and core assembly adopt organizes sealing more, cone match is adopted to seal between spool and valve seat, during hydraulic control one-way valve forward feed flow, liquid enters from inlet, the elastic force of the second spring is overcome by hydraulic coupling, first spool is pushed away the first valve seat, set up forward liquid flow path, when inlet stops feed flow, the elastic force of the second spring can make the first valve core reset, intercepts between liquid storage cylinder and the second delivery hole, realizes forward flow and the sealing function of this valve.
3, unloading opening process of the present utility model is secondary unloading, and hydraulic shock power is little, and for reducing the hydraulic shock produced when hydraulic control one-way valve unloading is opened, this valve adopts secondary unloading structure.This valve has two the first spools and the second spool that are nested together.First order unloading is that the second spool is opened, first spool is not opened, it is reducing pressure by regulating flow process, effect is got off by the high pressure drop of column cavity of resorption, to reduce hydraulic shock, second level unloading is that the first spool opens the process forming liquid stream major path completely, effect be the liquid large discharge that pressure has been lowered through hydraulic control one-way valve, column is declined rapidly.Secondary unloading effect is that the energy of column plunger shaft highly pressurised liquid is divided into twice release by original once release, compression shock is reduced to minimum, although the fluid-control one-way valve arrangement of this twin-stage unloading is complicated, because the active area of the second spool is little, required push rod thrust is also little; Though the active area of the first spool is comparatively large, opened unloading by the second spool, pressure reduces, and push rod required thrust is corresponding minimizing also, therefore can adapt to high-pressure system.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described further.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is lateral view of the present utility model.
In figure, 1 be valve body, 2 be core assembly, 3 be end bell and spigot joint, 4 be core retainer plate for push rod, 5 is the first spring, 6 for cover for seat, 7 be the first valve seat, 8 be the second valve seat, 9 be the first spool, 10 be the second spool, 11 is the second spring, 12,13 be inlet for valve pocket, 14 be the first delivery hole, 15 is the first damping hole, 16,17 be connecting hole for liquid outlet, 18 be the second delivery hole, 19 is the second damping hole, 20,21 for controlling mouth.
Detailed description of the invention
As shown in Figure 1 and Figure 2, a kind of insertion liquid pressure valve of the utility model, comprise valve body 1 and core assembly 2, described core assembly 2 is actively plugged in valve body 1, one end of described core assembly 2 withstands in valve body 1, the other end of described core assembly 2 is provided with end bell and spigot joint 3, and one end of described end bell and spigot joint 3 to be inserted in valve body 1 and to be compressed by core assembly 2;
The structure of described core assembly 2 is: comprise push rod 4, first spring 5, cover for seat 6, first valve seat 7, second valve seat 8, first spool 9, second spool 10, second spring 11, core retainer plate 12 and valve pocket 13, the mutual plug-in formation in one end of described cover for seat 6 and one end of valve pocket 13 housing, described push rod 4 is actively plugged on the other end of cover for seat 6, described first spring 5 is sleeved on push rod 4 for making push rod 4 reset, the relevant position of described cover for seat 6 and valve pocket 13 is provided with the first delivery hole 14, described first valve seat 7 is arranged in valve pocket 13, described first valve seat 7 is pressed on valve pocket 13 by cover for seat 6, described first spool 9 is movably arranged in valve pocket 13, described first spool 9 and valve pocket 13 matched in clearance, described first spool 9 and the first valve seat 7 cone match, described second valve seat 8 and core retainer plate 12 are fixedly installed in the first spool 9, described second spool 10 and the second spring 11 are positioned at core retainer plate 12, described second spool 10 runs through the first spool 9, described second spool 10 and the second valve seat 8 cone match, described second spring 11 is between the second spool 10 and valve pocket 13, described second spring 11 resets for making the second spool 10, formation liquid storage cylinder between described second spool 10 and push rod 4,
Described end bell and spigot joint 3 is provided with the first damping hole 15 be connected with core assembly 2 inside, described valve body 1 is provided with inlet 16 and liquid outlet 17, described inlet 16 is communicated with the liquid storage cylinder of core assembly 2 by the first delivery hole 14, and described liquid outlet 17 is communicated with the first spool 9 inside of core assembly 2 by being arranged on the second delivery hole 18 on valve pocket 13.
The end of described valve pocket 13 is provided with the second damping hole 19, and the first spool 9 is connected with the connecting hole 20 be arranged on valve body 1 by described second damping hole 19, and described connecting hole 20 is for being connected with safety valve.
Described valve body 1 and end bell and spigot joint 3 are provided with control mouth 21, and described control mouth 21 is all connected with the first damping hole 15.
Described core assembly 2 and end bell and spigot joint 3 are provided with multiple-sealed circle with the cooperation place of valve body 1.
The utility model describes the principle and operation instruction etc. of cartridge valve for hydraulic control one-way valve.Hydraulic control one-way valve has good one-way sealing, is usually used in the occasion that executive component needs long-time pressurize, locking, glides and in liquid flow path direction changing-over loop when being also usually used in preventing the stop motion of vertical solution cylinder pressure because of deadweight.Concerning hydraulic support, hydraulic control one-way valve is the chief component of hydraulic support control element, be used for locking column or jack working chamber liquid and make it to keep certain pressure; When column or another chamber feed liquor of jack, give the control chamber feed flow of this valve simultaneously, valve is opened, ensure that in column or jack working chamber, liquid returns liquid.The quality of hydraulic control one-way valve quality, directly affects the reliability of support action.If the sealing performance of one way valve is bad, can't lock the hydraulic fluid of column plunger shaft, during roof weighting, support just there will be the phenomenon automatically declined.
Traditional common valve is in down-hole dismounting maintenance and inconvenience thereof, and human and material resources, transport cost etc. are larger; Especially large at the coal-winning machine power of high-productivity faces, coal mining speed is fast, and require that support advances to reach frame fast, the lifting of column is the main actions that hydraulic support support moves frame, and this just requires that hydraulic control one-way valve must to large discharge future development.For FDY500/50 hydraulic control one-way valve, study the technology of hydraulic support large discharge cartridge valve.
According to the requirement of existing industry standard, the key technical indexes of 500L/min hydraulic control one-way valve is as follows:
1) opening pressure must not be greater than 1MPa;
2) closing presure of column hydraulic control one-way valve must not lower than 95% of inlet hydraulic;
3) controlled pressure is the 30%-65% of pump nominal pressure;
4) enter back hydraulic coupling must not lose and be greater than 7MPa;
5) uninstall process maximum impact pressure must not be greater than 115% of nominal pressure;
6) the life-span number of times of type approval test is 5000 times;
7) intensity pressure is 1.5 times of this valve nominal pressure;
8) hydraulic control one-way valve from 2MPa to the pressure limit of nominal pressure sealing reliable.
The utility model adopts integral plugged formula structure, is made up of valve body 1 and core assembly 2, and the weight of core assembly 2 is only 1/5 of whole hydraulic control one-way valve gross weight, only need change core assembly 2 during maintenance, easy to maintenance.
Sealing of the present utility model is reliable, valve body 1 and core assembly 2 adopt organizes sealing more, cone match is adopted to seal between spool and valve seat, during hydraulic control one-way valve forward feed flow, liquid enters from inlet 16, the elastic force of the second spring 11 is overcome by hydraulic coupling, first spool 9 is pushed away the first valve seat 7, set up forward liquid flow path, when inlet 16 stops feed flow, the elastic force of the second spring 11 can make the first spool 9 reset, and intercepts, realize forward flow and the sealing function of this valve by between liquid storage cylinder and the second delivery hole 18.
Unloading opening process of the present utility model is secondary unloading, and hydraulic shock power is little, and for reducing the hydraulic shock produced when hydraulic control one-way valve unloading is opened, this valve adopts secondary unloading structure.This valve has two the first spool 9 and the second spools 10 be nested together.First order unloading is that the second spool 10 is opened, first spool 9 is not opened, it is reducing pressure by regulating flow process, effect is got off by the high pressure drop of column cavity of resorption, to reduce hydraulic shock, second level unloading is the process that the first spool 9 opens formation liquid stream major path completely, effect be the liquid large discharge that pressure has been lowered through hydraulic control one-way valve, column is declined rapidly.Secondary unloading effect is that the energy of column plunger shaft highly pressurised liquid is divided into twice release by original once release, compression shock is reduced to minimum, although the fluid-control one-way valve arrangement of this twin-stage unloading is complicated, because the active area of the second spool 10 is little, required push rod 4 thrust is also little; Though the active area of the first spool 10 is comparatively large, opened unloading by the second spool 10, pressure reduces, and the also corresponding minimizing of push rod 4 required thrust, therefore can adapt to high-pressure system.
The utility model has following characteristics: internal resistance is little, suitable large discharge work; Valve port majority adopts conical surface seal, and thus leak little, the working media for ground viscosity such as emulsions is also suitable for, and structure is simple, reliable operation, standardization level are high; Size and weight can be reduced significantly for large discharge, high pressure, more complicated hydraulic system.Require that hydraulic control one-way valve must seal reliably, long service life.
By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from the utility model aim.
Claims (4)
1. an insertion liquid pressure valve, it is characterized in that: valve body (1) and core assembly (2), described core assembly (2) is actively plugged in valve body (1), one end of described core assembly (2) withstands in valve body (1), the other end of described core assembly (2) is provided with end bell and spigot joint (3), and one end of described end bell and spigot joint (3) to be inserted in valve body (1) and to be compressed by core assembly (2);
The structure of described core assembly (2) is: comprise push rod (4), first spring (5), cover for seat (6), first valve seat (7), second valve seat (8), first spool (9), second spool (10), second spring (11), core retainer plate (12) and valve pocket (13), the mutual plug-in formation in one end of described cover for seat (6) and one end of valve pocket (13) housing, described push rod (4) is actively plugged on the other end of cover for seat (6), described first spring (5) is sleeved on push rod (4) for making push rod (4) reset, the relevant position of described cover for seat (6) and valve pocket (13) is provided with the first delivery hole (14), described first valve seat (7) is arranged in valve pocket (13), described first valve seat (7) is pressed on valve pocket (13) by cover for seat (6), described first spool (9) is movably arranged in valve pocket (13), described first spool (9) and valve pocket (13) matched in clearance, described first spool (9) and the first valve seat (7) cone match, described second valve seat (8) and core retainer plate (12) are fixedly installed in the first spool (9), described second spool (10) and the second spring (11) are positioned at core retainer plate (12), described second spool (10) runs through the first spool (9), described second spool (10) and the second valve seat (8) cone match, described second spring (11) is positioned between the second spool (10) and valve pocket (13), described second spring (11) resets for making the second spool (10), formation liquid storage cylinder between described second spool (10) and push rod (4),
Described end bell and spigot joint (3) is provided with the first damping hole (15) be connected with core assembly (2) inside, described valve body (1) is provided with inlet (16) and liquid outlet (17), described inlet (16) is communicated by the liquid storage cylinder of the first delivery hole (14) with core assembly (2), and described liquid outlet (17) is communicated with the first spool (9) inside of core assembly (2) by being arranged on the second delivery hole (18) on valve pocket (13).
2. a kind of insertion liquid pressure valve according to claim 1, it is characterized in that: the end of described valve pocket (13) is provided with the second damping hole (19), first spool (9) is connected with the connecting hole (20) be arranged on valve body (1) by described second damping hole (19), and described connecting hole (20) is for being connected with safety valve.
3. a kind of insertion liquid pressure valve according to claim 1 and 2, is characterized in that: described valve body (1) and end bell and spigot joint (3) are provided with control mouth (21), and described control mouth (21) is all connected with the first damping hole (15).
4. a kind of insertion liquid pressure valve according to claim 3, is characterized in that: described core assembly (2) and end bell and spigot joint (3) are provided with multiple-sealed circle with the cooperation place of valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420446516.4U CN204140099U (en) | 2014-08-08 | 2014-08-08 | A kind of insertion liquid pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420446516.4U CN204140099U (en) | 2014-08-08 | 2014-08-08 | A kind of insertion liquid pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204140099U true CN204140099U (en) | 2015-02-04 |
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ID=52416792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420446516.4U Expired - Fee Related CN204140099U (en) | 2014-08-08 | 2014-08-08 | A kind of insertion liquid pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204140099U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131824A (en) * | 2014-08-08 | 2014-11-05 | 霍州煤电集团霍源通新产业投资有限公司 | Inserted hydraulic valve |
-
2014
- 2014-08-08 CN CN201420446516.4U patent/CN204140099U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131824A (en) * | 2014-08-08 | 2014-11-05 | 霍州煤电集团霍源通新产业投资有限公司 | Inserted hydraulic valve |
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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: 20150204 Termination date: 20150808 |
|
| EXPY | Termination of patent right or utility model |