CN109667803B - Stack formula hydrovalve - Google Patents
Stack formula hydrovalve Download PDFInfo
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- CN109667803B CN109667803B CN201910020849.8A CN201910020849A CN109667803B CN 109667803 B CN109667803 B CN 109667803B CN 201910020849 A CN201910020849 A CN 201910020849A CN 109667803 B CN109667803 B CN 109667803B
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- 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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Abstract
The invention discloses a superposition type hydraulic valve, belonging to the field of hydraulic valves, comprising a plurality of superposition valves, wherein the superposition valves are provided with five guide holes and four threaded holes from top to bottom, the screw mouth of the threaded hole at the upper end of the superposition valve is provided with a triangular adaptive groove, the screw mouth of the threaded hole at the lower end of the superposition valve is fixedly connected with a triangular positioning support leg, the triangular positioning support leg is matched with the triangular adaptive groove, the bottom end of the triangular adaptive groove is provided with an oil accumulation groove, the oil accumulation groove surrounds the outer side of the threaded hole, and the oil accumulation groove is filled with an oil accumulation block. The dislocation is avoided, and simultaneously, the support function can be provided for the placement of the superposition valve.
Description
Technical Field
The invention relates to the field of hydraulic valves, in particular to a superposition type hydraulic valve.
Background
The superposition valve is developed on the basis of plate valve integration in the last 10 years, and a valve body is used as a connecting body, so that an additional connecting body is not needed. And a superposition valve with the same drift diameter. The sizes, positions and numbers of oil ports and bolt holes are the same as those of matched plate-type reversing valves, and various typical hydraulic systems can be formed by superposing superposed valves with the same drift diameter according to a certain sequence, adding electromagnetic valves or electro-hydraulic reversing valves and fixing the electromagnetic valves or the electro-hydraulic reversing valves by bolts.
The general stack type hydraulic valve group is just misaligned by slightly bumping the valve group mounting holes in the mounting process by four layers in the process of stacking, and the four layers of valve groups are also adjusted front, back, left and right, the O-shaped ring on the bottom sealing surface in the process of adjusting the four layers of valve groups is easy to extrude, oil leaks easily after the mounting is finished, and the mounting difficulty is high.
In order to improve the problem, chinese patent publication No. CN207841197U discloses a stack formula hydraulic valve group mounting tool, including the supporting seat, the top fixedly connected with support of supporting seat, the one end that the supporting seat was kept away from to the support articulates through the pivot has the spliced pole, the inside fixedly connected with slide bar of spliced pole, the middle part fixedly connected with sleeve of spliced pole inner chamber diapire, the threaded rod has been cup jointed to the one end that the spliced pole inner chamber diapire was kept away from to the sleeve, the fixed cup joint in top of spliced pole has the bearing, the inner circle and the threaded rod fixed. The utility model provides an easy oil leak after the installation of stack formula hydraulic pressure valves is accomplished, the great problem of the installation degree of difficulty makes stack formula hydraulic pressure valves closely laminate through setting up spliced pole, slide bar, sleeve, threaded rod, bearing, slide, connecting rod, baffle, locating pin, screw hole and adjust knob to coincide each other, thereby can not the oil leak. In addition, chinese patent publication No. CN208231186U discloses a quick assembly and disassembly tool for a stacked hydraulic valve set, one end of a guide rod is an external thread, the other end is a twist clamping position, wherein the external thread is matched with an internal thread of a valve block installation hydraulic valve, the rod body diameter of the guide rod is smaller than the bolt hole diameter of the stacked hydraulic valve, and the length of the guide rod is larger than the total height of the stacked valve. The hydraulic valve dismounting device has the advantages that the hydraulic valve is dismounted and mounted under the assistance of the guide rod, the overhauling quality of processing hydraulic valve faults in a hydraulic system is ensured, the overhauling efficiency of dismounting and mounting the hydraulic valve is improved, manpower is saved, and the hydraulic valve dismounting device has the characteristics of being fast and efficient.
However, the above-mentioned patents adopt additional tools for the installation of the superposition hydraulic valve, and there is a drawback that the superposition hydraulic valve is difficult to be installed quickly and accurately once the additional tools are disengaged.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a superposition type hydraulic valve, the orifice of a threaded hole at the corner of each superposition valve is set to be triangular, the triangular threaded openings face to the same direction, reverse installation errors cannot occur, the orifice of the threaded hole at the lower end of each superposition valve is matched with a triangular positioning support leg, rapid adaptive installation can be realized, sliding and dislocation cannot occur among a plurality of superposition valves in the installation process, and meanwhile, a supporting effect can be provided for the placement of the superposition valves.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A superposition type hydraulic valve comprises a plurality of superposition valves, wherein five guide holes and four threaded holes are drilled on the superposition valves from top to bottom, the five guide holes are distributed in the middle of the superposition valves, the four threaded holes are distributed at the four corners of the superposition valves, triangular adaptive grooves are drilled at the screw ports of the threaded holes at the upper ends of the superposition valves, triangular positioning support legs are fixedly connected at the screw ports of the threaded holes at the lower ends of the superposition valves, the triangular positioning support legs are matched with the triangular adaptive grooves, oil accumulation grooves are drilled at the bottom ends of the triangular adaptive grooves, the oil accumulation grooves surround the outer sides of the threaded holes, and oil accumulation blocks are filled in the oil accumulation grooves. Can realize quick adaptation installation, and can not produce between a plurality of stack valves in the installation and slide, can not misplace, can provide the supporting role for placing of stack valve simultaneously.
Furthermore, the guide holes in the superposition valves are in one-to-one correspondence from top to bottom, and the threaded holes in the superposition valves are in one-to-one correspondence from top to bottom, so that the installation standard of the superposable hydraulic valve is met.
Furthermore, the orifice of the guide hole is connected with a sealing ring, and the sealing ring is made of modified epoxy resin materials, so that the sealing effect is good, and oil leakage is not easy to occur.
Furthermore, triangle location stabilizer blade lower extreme fixedly connected with antiskid sealing gasket is difficult for unexpected the slip when placing, the surface coating of antiskid sealing gasket has the oil drainage layer, is difficult for the adhesion greasy dirt.
Furthermore, the oil accumulation block comprises oil absorption cotton and an expansion ring, the oil absorption cotton is located on the upper side of the expansion ring and fixedly connected with the expansion ring, when the threaded hole is immersed in oil, the oil absorption cotton absorbs oil, the expansion ring expands after contacting with the oil in the oil absorption cotton, the oil absorption cotton is extruded, and the oil absorption cotton blocks the triangular adaptation groove tightly to prevent oil stains from further permeating.
Furthermore, the oil absorption cotton is bleached and then soaked in the colorless softener, the oil absorption cotton is pure white after being dried, the pure white oil absorption cotton is yellow after absorbing oil, so that maintainers can observe the oil seepage condition conveniently, and the cotton silk of the oil absorption cotton soaked in the softener is not easy to break and is durable.
Furthermore, the upper half part of the oil absorption cotton is compressed, the middle part of the oil absorption cotton is kept in a loose state, the joint of the lower end of the oil absorption cotton and the expansion ring is also compressed, and the oil absorption effect is good.
Further, the triangular positioning support leg side is provided with an intersection groove, the intersection groove is matched with the oil accumulation block, when the threaded hole is subjected to oil immersion, oil absorption cotton absorbs oil, the expansion ring is expanded after contacting oil in the oil absorption cotton, the oil absorption cotton is extruded, the oil absorption cotton blocks the triangular adaptation groove tightly, oil contamination is prevented from further permeating, when oil seepage is excessive, the expansion ring is expanded to be larger, the oil absorption cotton is further extruded, the oil absorption cotton blocks the intersection groove tightly, and oil contamination is prevented from permeating.
Furthermore, the inner wall of the cross-over groove is fixedly and densely distributed with non-return hanging bristles which are elastic and filamentous, the free ends of the non-return hanging bristles are upwards tilted, when oil seepage is too much, the expansion rings expand more, oil absorption cotton is further extruded, the oil absorption cotton blocks the cross-over groove tightly, and when maintenance is carried out, maintenance personnel upwards remove the superposition valve, the oil absorption cotton is hung on the non-return hanging bristles, and the maintenance personnel can observe the oil seepage condition conveniently.
Furthermore, the directions of the four triangular adaptation grooves are consistent, and errors of reverse installation cannot occur.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme sets the screw hole drill way of every stack valve edge to three horn shapes, and the screw mouth of three horn shapes all towards same direction, the mistake of reverse installation can not appear, and screw hole drill way department of every stack valve lower extreme all cooperates the location stabilizer blade that has three horn shapes, can realize quick adaptation installation, and can not produce between a plurality of stack valves in the installation and slide, can not misplace, can provide supporting role for placing of stack valve simultaneously.
(2) The guide holes on the superposition valves are in one-to-one correspondence from top to bottom, and the threaded holes on the superposition valves are in one-to-one correspondence from top to bottom, so that the mounting standard of the stackable hydraulic valve is met.
(3) The oil accumulation block comprises oil absorption cotton and an expansion ring, the oil absorption cotton is located on the upper side of the expansion ring and fixedly connected with the expansion ring, when the threaded hole is immersed in oil, the oil absorption cotton absorbs the oil, the expansion ring expands after contacting with the oil in the oil absorption cotton, the oil absorption cotton is extruded, and the oil absorption cotton blocks the triangular adaptation groove to prevent oil stains from further permeating.
(4) The oil absorption cotton is bleached and then soaked by the colorless softener, the oil absorption cotton is pure white after being dried, the pure white oil absorption cotton is yellow after absorbing oil, the oil seepage condition can be conveniently observed by maintainers, and the cotton silk of the oil absorption cotton soaked by the softener is not easy to break and is durable.
(5) The upper half part of the oil absorption cotton is compressed, the middle part of the oil absorption cotton is kept in a loose state, the joint of the lower end of the oil absorption cotton and the expansion ring is compressed, and the oil absorption effect is good.
(6) The triangular positioning support leg side is provided with an intersection groove, the intersection groove is matched with the accumulated oil block, when the threaded hole is subjected to oil immersion, oil is absorbed by the oil absorption cotton, the expansion ring is expanded after contacting oil in the oil absorption cotton, the oil absorption cotton is extruded, the oil absorption cotton blocks the triangular adaptation groove, oil contamination is prevented from further permeating, when the oil immersion is excessive, the expansion ring is expanded to be larger, the oil absorption cotton is further extruded, and the oil absorption cotton blocks the intersection groove to prevent the oil contamination from permeating.
(7) The non-return hanging hair is fixedly and densely distributed on the inner wall of the cross-connecting groove, the non-return hanging hair is elastic and filamentous, the free end of the non-return hanging hair is in an upward tilting shape, when the oil seepage is too much, the expansion ring expands more, the oil absorption cotton is further extruded, the oil absorption cotton blocks the cross-connecting groove tightly, and during maintenance, a maintenance worker upwards removes the superposition valve, hangs the oil absorption cotton on the non-return hanging hair, and the maintenance worker can conveniently observe the oil seepage condition.
(8) The directions of the four triangular adaptation grooves are consistent, and errors of reverse installation can be avoided.
Drawings
FIG. 1 is a schematic structural view of a superposition valve according to the present invention in a superposed state;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic view of the structure at A in FIG. 2;
FIG. 4 is a schematic front view of the present invention;
FIG. 5 is a schematic structural view of an oil cake of the present invention;
fig. 6 is a schematic structural view of the triangular positioning leg of the present invention.
The reference numbers in the figures illustrate:
1 superposition valve, 2 guide holes, 3 threaded holes, 4 triangular adapting grooves, 5 triangular positioning support legs, 6 oil accumulation blocks, 61 oil absorption cotton, 62 expansion rings, 7 oil accumulation grooves, 8 cross connecting grooves and 9 non-return hair hanging.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, the superposition type hydraulic valve comprises a plurality of superposition valves 1, wherein five guide holes 2 and four threaded holes 3 are drilled in the superposition valves 1 from top to bottom;
referring to fig. 2, five guide holes 2 are distributed in the middle of the superposition valve 1, and four threaded holes 3 are distributed at four corners of the superposition valve 1;
referring to fig. 3, a triangular adapting groove 4 is chiseled at the screw port of the threaded hole 3 at the upper end of the superposition valve 1;
referring to fig. 4, a triangular positioning support leg 5 is fixedly connected to a screw opening of a threaded hole 3 at the lower end of the superposition valve 1, the triangular positioning support leg 5 is matched with a triangular adapting groove 4, an oil accumulation groove 7 is formed in the bottom end of the triangular adapting groove 4, the oil accumulation groove 7 surrounds the outer side of the threaded hole 3, referring to fig. 3, an oil accumulation block 6 is filled in the oil accumulation groove 7.
Referring to fig. 1, the guide holes 2 on the plurality of superposition valves 1 are in one-to-one correspondence from top to bottom, and the threaded holes 3 on the plurality of superposition valves 1 are also in one-to-one correspondence from top to bottom, so that the installation standard of the superposable hydraulic valve is met.
Referring to fig. 2, the orifice of the pilot hole 2 is connected with a sealing ring, and the sealing ring is made of modified epoxy resin material, so that the sealing effect is good, and oil leakage is not easy to occur.
The lower end of the triangular positioning support leg 5 is pasted with an anti-skid sealing gasket which is not easy to accidentally slide when placed, and the surface of the anti-skid sealing gasket is coated with an oil-dredging layer which is not easy to adhere with oil stains.
Referring to fig. 5, the oil accumulation block 6 includes an oil absorption cotton 61 and an expansion ring 62, the oil absorption cotton 61 is located on the upper side of the expansion ring 62 and is bonded with the expansion ring 62, when the threaded hole 3 is immersed in oil, the oil absorption cotton 61 absorbs oil, the expansion ring 62 expands after contacting with the oil in the oil absorption cotton 61, the oil absorption cotton 61 is squeezed, and the oil absorption cotton 61 blocks the triangular adapter groove 4 tightly to prevent oil stains from further penetrating.
The oil absorption cotton 61 is bleached and then soaked by the colorless softener, the oil absorption cotton 61 is pure white after being dried, the pure white oil absorption cotton 61 is yellow after absorbing oil, the oil seepage condition can be conveniently observed by maintainers, and the cotton threads of the oil absorption cotton 61 soaked by the softener are not easy to break and are durable.
The upper half part of the oil absorption cotton 61 is compressed, the middle part of the oil absorption cotton 61 is kept in a loose state, the connection part of the lower end of the oil absorption cotton 61 and the expansion ring 62 is compressed, and the oil absorption effect is good.
Referring to fig. 6, an intersecting groove 8 is formed at the side end of the triangular positioning support leg 5, the intersecting groove 8 is matched with the oil accumulation block 6, when the threaded hole 3 is immersed in oil, the oil absorption cotton 61 absorbs oil, the expansion ring 62 expands after contacting with the oil in the oil absorption cotton 61, the oil absorption cotton 61 is squeezed, the oil absorption cotton 61 blocks the triangular adapting groove 4 tightly, oil contamination is prevented from further permeating, when oil seepage is excessive, the expansion ring 62 expands more, the oil absorption cotton 61 is further squeezed, and the oil absorption cotton 61 blocks the intersecting groove 8 tightly, so that oil contamination is prevented from permeating.
Referring to fig. 6, the inner wall of the cross-connecting groove 8 is fixedly and densely distributed with the non-return hanging bristles 9, the non-return hanging bristles 9 are elastic filament-shaped, the free end of the non-return hanging bristles 9 is tilted upward, when the oil seepage is excessive, the expansion ring 62 expands more, the oil absorption cotton 61 is further extruded, the oil absorption cotton 61 blocks the cross-connecting groove 8 tightly, and during maintenance, in the process that a maintenance worker upwards removes the superposition valve 1, the oil absorption cotton 61 is hung on the non-return hanging bristles 9, so that the maintenance worker can conveniently observe the oil seepage condition.
Referring to fig. 2, the four triangular adapter grooves 4 are in the same direction, and no reverse installation error occurs.
Compared with the prior art that all the measures adopted for the installation problem of the superposition type hydraulic valve are additional tools, the method has the defect that once the additional tools are separated, the superposition type hydraulic valve still has the problem that the superposition type hydraulic valve is difficult to install quickly and accurately;
according to the invention, the threaded hole at the corner of each superposition valve 1 is arranged to be triangular, the triangular threaded holes face the same direction, so that reverse installation errors can not occur, the triangular positioning support legs are matched with the threaded hole at the lower end of each superposition valve 1, so that quick adaptive installation can be realized, a plurality of superposition valves 1 cannot slide or be misplaced in the installation process, and meanwhile, a supporting effect can be provided for the placement of the superposition valves 1. (ii) a
In addition, an oil accumulation groove 7 is formed in the inner bottom end of the triangular adapting groove 4 in a chiseled mode, the oil accumulation groove 7 surrounds the outer side of the threaded hole 3, an oil accumulation block 6 formed by oil absorption cotton 61 and an expansion ring 62 is filled in the oil accumulation groove 7, when the threaded hole 3 is immersed in oil, the oil absorption cotton 61 absorbs the oil, the expansion ring 62 expands after contacting with the oil in the oil absorption cotton 61, the oil absorption cotton 61 is extruded, the oil absorption cotton 61 blocks the triangular adapting groove 4 tightly to prevent oil stain from further permeating, when the oil permeating amount is too much, the expansion ring 62 expands more greatly to further extrude the oil absorption cotton 61, and the oil absorption cotton 61 blocks the connecting groove 8 tightly to prevent the oil stain from permeating; during maintenance, the maintenance personnel upwards remove 1 in-process of stack valve, and the oil absorption cotton 61 is hung on the contrary hair 9 that hangs that ends, and the maintenance personnel of being convenient for observe the oil impregnate situation.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (8)
1. Superposition hydraulic valve comprising a plurality of superposition valves (1), characterized in that: the stacking valve (1) is provided with five guide holes (2) and four threaded holes (3) from top to bottom, the five guide holes (2) are distributed in the middle of the stacking valve (1), the four threaded holes (3) are distributed at four corners of the stacking valve (1), a triangular adaptation groove (4) is drilled at the screw opening of the threaded hole (3) in the upper end of the stacking valve (1), a triangular positioning support leg (5) is fixedly connected at the screw opening of the threaded hole (3) in the lower end of the stacking valve (1), the triangular positioning support leg (5) is matched with the triangular adaptation groove (4), an oil accumulation groove (7) is drilled at the inner bottom end of the triangular adaptation groove (4), the oil accumulation groove (7) surrounds the outer side of the threaded hole (3), and an oil accumulation block (6) is filled in the oil accumulation groove (7); an intersection groove (8) is formed in the side end of the triangular positioning support leg (5), and the intersection groove (8) is matched with the oil accumulation block (6); the inner wall of the cross-connecting groove (8) is fixedly and densely distributed with non-return fur hanging (9), the non-return fur hanging (9) is elastic silk-shaped, and the free end of the non-return fur hanging (9) is in an upward tilted shape.
2. A superimposed hydraulic valve according to claim 1, wherein: the guide holes (2) on the superposition valves (1) are in one-to-one correspondence from top to bottom, and the threaded holes (3) on the superposition valves (1) are also in one-to-one correspondence from top to bottom.
3. A superimposed hydraulic valve according to claim 1 or 2, characterized in that: the orifice of the guide hole (2) is connected with a sealing ring, and the sealing ring is made of modified epoxy resin materials.
4. A superimposed hydraulic valve according to claim 1, wherein: the lower end of the triangular positioning supporting leg (5) is fixedly connected with an anti-skid sealing gasket, and the surface of the anti-skid sealing gasket is coated with an oil drainage layer.
5. A superimposed hydraulic valve according to claim 1, wherein: the oil accumulation block (6) comprises oil absorption cotton (61) and an expansion ring (62), wherein the oil absorption cotton (61) is positioned on the upper side of the expansion ring (62) and is fixedly connected with the expansion ring (62).
6. An overlap-add hydraulic valve according to claim 5, wherein: the oil absorption cotton (61) is soaked in a colorless softener after being bleached, and is pure white after being dried.
7. A superposition hydraulic valve according to claim 5 or 6, characterized in that: the upper half part of the oil absorption cotton (61) is compressed, the middle part of the oil absorption cotton (61) is kept in a loose state, and the joint of the lower end of the oil absorption cotton (61) and the expansion ring (62) is also compressed.
8. A superimposed hydraulic valve according to claim 1, wherein: the directions of the four triangular adaptation grooves (4) are consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910020849.8A CN109667803B (en) | 2019-01-09 | 2019-01-09 | Stack formula hydrovalve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910020849.8A CN109667803B (en) | 2019-01-09 | 2019-01-09 | Stack formula hydrovalve |
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| Publication Number | Publication Date |
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| CN109667803A CN109667803A (en) | 2019-04-23 |
| CN109667803B true CN109667803B (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910020849.8A Active CN109667803B (en) | 2019-01-09 | 2019-01-09 | Stack formula hydrovalve |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201621121U (en) * | 2010-03-01 | 2010-11-03 | 苏州市职业大学 | Novel overlapping functional block of overlapping valve set |
| CN201896806U (en) * | 2010-12-06 | 2011-07-13 | 四川川润股份有限公司 | Superposed type balance valve |
| CN106979185A (en) * | 2017-04-24 | 2017-07-25 | 中国重型机械研究院股份公司 | A kind of superposing type Zero-leakage hydraulic locking-valve |
| CN107917299A (en) * | 2017-11-27 | 2018-04-17 | 上海铮钰机械有限公司 | A kind of enamel pipe fixedly connected part |
| CN207841197U (en) * | 2018-02-01 | 2018-09-11 | 唐山建龙简舟钢铁有限公司 | A kind of superposing type hydraulic valve bank installation tool |
| CN208231186U (en) * | 2017-06-08 | 2018-12-14 | 柳州钢铁股份有限公司 | The Quick disassembling tool of superposing type hydraulic valve bank |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7623351B2 (en) * | 2005-12-12 | 2009-11-24 | Norgren, Inc. | Valve with an integrated PC board and connecting bar |
-
2019
- 2019-01-09 CN CN201910020849.8A patent/CN109667803B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201621121U (en) * | 2010-03-01 | 2010-11-03 | 苏州市职业大学 | Novel overlapping functional block of overlapping valve set |
| CN201896806U (en) * | 2010-12-06 | 2011-07-13 | 四川川润股份有限公司 | Superposed type balance valve |
| CN106979185A (en) * | 2017-04-24 | 2017-07-25 | 中国重型机械研究院股份公司 | A kind of superposing type Zero-leakage hydraulic locking-valve |
| CN208231186U (en) * | 2017-06-08 | 2018-12-14 | 柳州钢铁股份有限公司 | The Quick disassembling tool of superposing type hydraulic valve bank |
| CN107917299A (en) * | 2017-11-27 | 2018-04-17 | 上海铮钰机械有限公司 | A kind of enamel pipe fixedly connected part |
| CN207841197U (en) * | 2018-02-01 | 2018-09-11 | 唐山建龙简舟钢铁有限公司 | A kind of superposing type hydraulic valve bank installation tool |
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| CN109667803A (en) | 2019-04-23 |
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Effective date of registration: 20200813 Address after: No.91, No.25 Road, economic and Technological Development Zone, Shenyang City, Liaoning Province, 110200 Applicant after: SHENYANG WEITAI SCIENCE AND TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 310000 No. 69, Qiao Si Town, Yuhang District, Hangzhou, Zhejiang. Applicant before: Li Jian |
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