CN114508518A - Split type hydraulic reversing valve thread plug - Google Patents
Split type hydraulic reversing valve thread plug Download PDFInfo
- Publication number
- CN114508518A CN114508518A CN202110818031.8A CN202110818031A CN114508518A CN 114508518 A CN114508518 A CN 114508518A CN 202110818031 A CN202110818031 A CN 202110818031A CN 114508518 A CN114508518 A CN 114508518A
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- CN
- China
- Prior art keywords
- groove
- plug
- external thread
- valve
- valve core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention belongs to the technical field of hydraulic equipment, and particularly relates to a split type hydraulic reversing valve thread plug, which comprises an external thread nut and a valve core plug, wherein the bottom surface of the external thread nut is provided with a groove, and a groove a is arranged along the side wall of the groove; the top surface of the valve core plug is provided with a convex block corresponding to the groove, and the side wall of the convex block is provided with a groove b; the external thread nut and the valve core plug are movably connected through a ball arranged in a channel formed by the groove a and the groove b. According to the invention, through the split structure design, the damage or failure of the sealing element caused by the rotation friction between the sealing element and the valve seat is effectively avoided; effectively prolong the life of sealing member, reduced the fault rate of hydraulic pressure switching-over valve.
Description
Technical Field
The invention belongs to the technical field of hydraulic equipment, and particularly relates to a split type hydraulic reversing valve thread plug.
Background
Along with the improvement of the automation degree of coal mining, the underground intelligent coal face is developed. The hydraulic reversing valve is a key component of an electro-hydraulic control system in automation equipment, and comprises a valve seat, a valve core, a plug and the like. The hydraulic reversing valve is also a component with the highest failure rate in the whole electro-hydraulic control system, the valve core needs to be frequently disassembled for cleaning and maintenance, when the valve core is disassembled, the plug is necessarily disassembled first, the plug is provided with threads and a sealing element, when the plug is rotated, the sealing element and the valve seat generate rotation friction, and the sealing element is easily damaged or fails.
Disclosure of Invention
Aiming at a hydraulic reversing valve in the existing electro-hydraulic control system, the invention provides a split type hydraulic reversing valve thread plug which can solve the problem that a sealing element is damaged or fails due to the fact that the sealing element and a valve seat generate rotation friction.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a split type hydraulic reversing valve screw thread end cap, includes external screw thread nut and case end cap, its characterized in that: the bottom surface of the external thread nut is provided with a groove, and a groove a is arranged along the side wall of the groove; the top surface of the valve core plug is provided with a convex block corresponding to the groove, and the side wall of the convex block is provided with a groove b; the external thread nut and the valve core plug are movably connected through a ball arranged in a channel formed by the groove a and the groove b.
Further, the grooves a and b are arc-shaped grooves.
Furthermore, the outer side of the external thread nut is positioned at the height of the groove a, and a filling hole with the diameter slightly larger than that of the ball is arranged along the radial direction; the filling hole is blocked by a blocking wire.
Further, the filling hole and the blocking wire are connected through threads, and the inner end of the blocking wire is flush with the surface of the groove a.
Furthermore, the external thread nut is made of copper materials.
Furthermore, the valve core plug is made of stainless steel.
Compared with the prior art, the invention has the beneficial effects that: through the split structure design, the damage or the failure of the sealing element caused by the rotation friction between the sealing element and the valve seat is effectively avoided; effectively prolong the life of sealing member, reduced the fault rate of hydraulic pressure switching-over valve. The service life is prolonged by 50 percent, and the failure rate is reduced by 30 percent.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a sectional view taken along a sectional line a-a in fig. 1.
In the figure: 1-external thread nut, 2-valve core plug, 3-groove a, 4-groove b, 5-groove, 6-bump, 7-ball, 8-plug wire and 9-filling hole.
Detailed Description
In order to make the technical solutions of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and examples. The specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.
As shown in fig. 1 and 2, the split type hydraulic directional valve thread plug comprises an external thread nut 1 and a valve core plug 2, wherein the external thread nut 1 is movably connected to the valve core plug 2 to form a split type structure. The external thread nut 1 is made of copper materials, a groove 5 is formed in the bottom surface of the external thread nut, and a circle of groove a 3 is formed in the side wall of the groove 5. The valve core plug 2 is made of stainless steel, a convex block 6 corresponding to the groove 5 is arranged on the top surface, and a circle of groove b 4 corresponding to the groove a 3 is formed in the side wall of the convex block 6. When the groove 5 and the bump 6 are buckled together, the groove a 3 and the groove b 4 form a circle of channel, balls 7 are filled in the channel, and the external thread nut 1 and the valve core plug 2 are connected together. The ball 7 can reduce the frictional force between the external thread nut 1 and the valve core plug 2, so that when the external thread nut 1 rotates, the valve core plug 2 cannot be driven to rotate by the frictional force, and the damage or the failure of a sealing piece is avoided. The groove a 3 and the groove b 4 are arc-shaped grooves, so that the ball 7 can roll conveniently, and the friction force between the external thread nut 1 and the valve core plug 2 is further reduced. And filling holes 9 are formed in the outer side of the external thread nut 1 along the radial direction, the filling holes 9 and the grooves a 3 are positioned at the same height, and the filling holes 9 and the grooves a 3 are communicated. The aperture of the filling hole 9 is slightly larger than the diameter of the ball 7, and the ball 7 in the channel is filled or discharged through the filling hole 9, so that the connection and the separation of the external thread nut 1 and the valve core plug 2 are realized, and the overhaul and the maintenance of the thread plug are facilitated. The filling hole 9 is blocked by the blocking thread 8, the ball 7 is prevented from being discharged from the channel, and the ball and the channel are connected through screw threads. The inner end of the blocking wire 8 is arranged to be flush with the surface of the groove a 3 so as to fill the hole formed by the filling hole 9 and prevent the ball 7 from being blocked at the filling hole 9.
During the use, with external screw nut 1 and case end cap 2 lock-joint together, ball 7 accomplishes being connected of external screw nut 1 and case end cap 2 in installing the channel through filling hole 9, and stifled silk 8 blocks up filling hole 9 prevents that ball 7 from discharging in the channel. The split type hydraulic reversing valve threaded plug is disassembled and assembled by twisting the external thread nut 1, and the valve core plug 2 is still under the action of the ball 7 in the process, so that the damage or the failure of the sealing element caused by the rotation friction between the sealing element and the valve seat is effectively avoided.
The above description is only an example of the present invention and should not be taken as limiting the invention, and any modifications, equivalents, or improvements made within the technical solutions and principles of the present invention, especially the principles and design manners such as the principles and practical effects of the present invention, should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a split type hydraulic reversing valve screw thread end cap, includes external screw thread nut (1) and case end cap (2), its characterized in that: the bottom surface of the external thread nut (1) is provided with a groove (5), and a groove a (3) is arranged along the side wall of the groove (5); the top surface of the valve core plug (2) is provided with a convex block (6) corresponding to the groove (5), and a groove b (4) is arranged along the side wall of the convex block (6); the external thread nut (1) and the valve core plug (2) are movably connected through a ball (7) arranged in a channel formed by the groove a (3) and the groove b (4).
2. The split hydraulic directional valve thread plug as claimed in claim 1, wherein: the grooves a (3) and the grooves b (4) are arc-shaped grooves.
3. The split hydraulic directional valve thread plug as claimed in claim 1, wherein: the outer side of the external thread nut (1) is positioned at the height of the groove a (3), and a filling hole (9) with the diameter slightly larger than that of the ball (7) is arranged along the radial direction; the filling hole (9) is blocked by a blocking wire (8).
4. The split hydraulic directional valve plug as claimed in claim 3, wherein: the filling hole (9) is connected with the blocking wire (8) through threads, and the inner end of the blocking wire (8) is flush with the surface of the groove a (3).
5. The split hydraulic directional valve thread plug as claimed in claim 1, wherein: the external thread nut (1) is made of copper materials.
6. The split hydraulic directional valve thread plug as claimed in claim 1, wherein: the valve core plug (2) is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110818031.8A CN114508518A (en) | 2021-07-20 | 2021-07-20 | Split type hydraulic reversing valve thread plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110818031.8A CN114508518A (en) | 2021-07-20 | 2021-07-20 | Split type hydraulic reversing valve thread plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114508518A true CN114508518A (en) | 2022-05-17 |
Family
ID=81548325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110818031.8A Withdrawn CN114508518A (en) | 2021-07-20 | 2021-07-20 | Split type hydraulic reversing valve thread plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114508518A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0642655A (en) * | 1991-06-14 | 1994-02-18 | Hitachi Powdered Metals Co Ltd | Reciprocal selector valve |
| CN101871537A (en) * | 2010-06-21 | 2010-10-27 | 山西平阳广日机电有限公司 | Mining intrinsic safety electro-hydraulic control reversing valve core component |
| CN103334776A (en) * | 2013-05-28 | 2013-10-02 | 山西平阳广日机电有限公司 | Integral plug-in valve core assembly for hand-operated direction valve |
| CN106151566A (en) * | 2016-08-30 | 2016-11-23 | 山西平阳广日机电有限公司 | A kind of core assembly of flexible sealing structure |
| CN106194232A (en) * | 2016-08-30 | 2016-12-07 | 山西平阳广日机电有限公司 | A kind of hand-operated valve core assembly |
-
2021
- 2021-07-20 CN CN202110818031.8A patent/CN114508518A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0642655A (en) * | 1991-06-14 | 1994-02-18 | Hitachi Powdered Metals Co Ltd | Reciprocal selector valve |
| CN101871537A (en) * | 2010-06-21 | 2010-10-27 | 山西平阳广日机电有限公司 | Mining intrinsic safety electro-hydraulic control reversing valve core component |
| CN103334776A (en) * | 2013-05-28 | 2013-10-02 | 山西平阳广日机电有限公司 | Integral plug-in valve core assembly for hand-operated direction valve |
| CN106151566A (en) * | 2016-08-30 | 2016-11-23 | 山西平阳广日机电有限公司 | A kind of core assembly of flexible sealing structure |
| CN106194232A (en) * | 2016-08-30 | 2016-12-07 | 山西平阳广日机电有限公司 | A kind of hand-operated valve core assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220517 |
|
| WW01 | Invention patent application withdrawn after publication |