CN114321065B - Improved structure of pilot one-way overflow valve - Google Patents
Improved structure of pilot one-way overflow valve Download PDFInfo
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- CN114321065B CN114321065B CN202111620736.5A CN202111620736A CN114321065B CN 114321065 B CN114321065 B CN 114321065B CN 202111620736 A CN202111620736 A CN 202111620736A CN 114321065 B CN114321065 B CN 114321065B
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Abstract
The invention relates to the technical field of pilot operated overflow valves, and discloses an improved structure of a pilot operated one-way overflow valve, which comprises a valve body and a pilot valve arranged on the valve body, wherein a liquid inlet is formed in one side of the valve body, a first hydraulic area and a second hydraulic area are arranged in the valve body, and the first hydraulic area and the second hydraulic area are respectively communicated with the interior of the pilot valve through a first connecting hole and a second connecting hole; the first hydraulic area is communicated with the second hydraulic area, and the bottom ends of the first hydraulic area and the second hydraulic area are respectively provided with a first overflow port and a second overflow port; the insides of the first hydraulic area and the second hydraulic area are both provided with valve cores, and the top ends of the valve cores are provided with main valve springs. When internal pressure is great, liquid is promoting the cone valve and opening the back, continues to promote the regulating block and moves to the inboard, makes first connecting hole open to the first hydraulic pressure district of accessible carries out quick release to inside simultaneously with the second hydraulic pressure district, in order to satisfy on a large scale user demand, has reduced the potential safety hazard.
Description
Technical Field
The invention relates to the technical field of pilot overflow valves, in particular to an improved structure of a pilot one-way overflow valve.
Background
The overflow valve is a common pressure control element in a hydraulic system, and can be used as a pressure overflow valve in a hydraulic oil overflow mode, so that the pressure of the system is kept constant, or used as a safety valve to prevent the system from being overloaded. The basic working principle is that the hydraulic pressure generated by the fluid pressure on the valve core is compared with the spring force, and when the hydraulic pressure is greater than the pressure-regulating spring force, the valve port is opened to start overflowing; when the hydraulic pressure is less than the pressure-regulating spring force, the valve port is closed to stop overflowing, so that the system pressure is basically stabilized at a certain set value, and the control of the pressure is realized. The traditional overflow valve has a small pressure adjusting range and cannot meet the application in different places in a large range, so that an improved structure of a pilot one-way overflow valve is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an improved structure of a pilot one-way overflow valve.
In order to achieve the purpose, the invention adopts the following technical scheme:
the improved structure of the pilot one-way overflow valve comprises a valve body and a pilot valve arranged on the valve body, wherein the valve body is connected with the pilot valve through a connecting channel, a liquid inlet is formed in one side of the valve body, a first hydraulic area and a second hydraulic area are arranged inside the valve body, and the first hydraulic area and the second hydraulic area are respectively communicated with the inside of the pilot valve through a first connecting hole and a second connecting hole;
the first hydraulic area is communicated with the second hydraulic area, one side of the first hydraulic area is connected with the liquid inlet, and the bottom ends of the first hydraulic area and the second hydraulic area are respectively provided with a first overflow port and a second overflow port;
valve cores are arranged inside the first hydraulic area and the second hydraulic area, damping holes are formed in the valve cores, and a main valve spring is arranged at the top end of each valve core;
a liquid outlet is formed in one end of the pilot valve, a pressure regulating handle is arranged at the other end of the pilot valve, a cone valve is arranged in the pilot valve in a sliding mode, an adjusting block is fixed on the end face of the cone valve through a connecting shaft, and a pressure regulating spring is arranged between the adjusting block and the pressure regulating handle;
the connecting channel is positioned in the second hydraulic area and is communicated with the liquid outlet 12;
the adjusting block is attached to the inner wall of the pilot valve, the adjusting block is in sliding fit with the pilot valve, and the first connecting hole is located below the adjusting block;
a through hole is arranged between the liquid outlet and the cone valve, the through hole is positioned in the pilot valve, and the cone valve is matched with the through hole.
Preferably, the middle part of the valve core is provided with an overflow hole, and the overflow hole penetrates through the upper end and the lower end of the valve core.
Preferably, the pressure regulating handle is in threaded connection with the pilot valve, and an anti-skid layer is arranged on the outer wall of the pressure regulating handle.
The beneficial effects of the invention are:
this is provided with two hydraulic pressure districts through the inside at the valve body, when internal pressure is less, is opened through second hydraulic pressure district by liquid promotion cone valve and carries out the release to internal pressure, and when internal pressure is great, liquid is opening the back promoting the cone valve, continues to promote the inside side movement of regulating block, makes first connecting hole open to the inside quick release that carries out simultaneously of accessible first hydraulic pressure district and second hydraulic pressure district, in order to satisfy user demand on a large scale, has reduced the potential safety hazard.
Drawings
Fig. 1 is a schematic structural diagram of an improved structure of a pilot one-way overflow valve provided by the invention;
fig. 2 is a schematic structural diagram of a valve core in an improved structure of the pilot one-way overflow valve provided by the invention.
In the figure: 1. a valve body; 2. a pilot valve; 3. a first hydraulic zone; 4. a second hydraulic zone; 5. A first overflow port; 6. a second overflow port; 7. a valve core; 71. a damping hole; 8. an overflow aperture; 9. A main valve spring; 10. a liquid inlet; 11. a connecting channel; 12. a liquid outlet; 13. a first connection hole; 14. a second connection hole; 15. a cone valve; 16. a connecting shaft; 17. an adjusting block; 18. a pressure regulating spring; 19. pressure regulating handle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1-2, an improved structure of a pilot check overflow valve comprises a valve body 1 and a pilot valve 2 arranged on the valve body 1, wherein the valve body 1 is connected with the pilot valve 2 through a connecting channel 11, the connecting channel 11 is positioned at one end of the pilot valve 2, a liquid inlet 10 is arranged at one side of the valve body 1, a first hydraulic area 3 and a second hydraulic area 4 are arranged inside the valve body 1, and the first hydraulic area 3 and the second hydraulic area 4 are respectively communicated with the inside of the pilot valve 2 through a first connecting hole 13 and a second connecting hole 14;
the first hydraulic area 3 is communicated with the second hydraulic area 4, one side of the first hydraulic area 3 is connected with the liquid inlet 10, the bottom ends of the first hydraulic area 3 and the second hydraulic area 4 are respectively provided with a first overflow port 5 and a second overflow port 6, and the first overflow port 5 and the second overflow port 6 enable the pressure-relieved liquid to flow out of the valve body 1;
the valve core 7 is arranged inside the first hydraulic area 3 and the second hydraulic area 4, the joint of the first hydraulic area 3 and the second hydraulic area 4 is positioned below the main body of the valve core 7, the valve core 7 is attached to the inner walls of the first hydraulic area 3 and the second hydraulic area 4, the valve core 7 is in sliding fit with the first hydraulic area 3 and the second hydraulic area 4, the valve core 7 is provided with a damping hole 71, the top end of the valve core 7 is provided with a main valve spring 9, the middle part of the valve core 7 is provided with an overflow hole 8, the overflow hole 8 penetrates through the upper end and the lower end of the valve core 7, and the pressure relief effect is improved through the overflow hole 8;
one end of pilot valve 2 is provided with liquid outlet 12, interface channel 11 is located second hydraulic area 4, and interface channel 11 communicates with liquid outlet 12, and the other end of pilot valve 2 is provided with pressure regulating handle 19, pressure regulating handle 19 and pilot valve 2 threaded connection, and be provided with the skid resistant course on the outer wall of pressure regulating handle 19, and the inside slip of pilot valve 2 is provided with cone valve 15, be provided with the through-hole between liquid outlet 12 and the cone valve 15, the through-hole is located pilot valve 2, and cone valve 15 and through-hole looks adaptation, the terminal surface of cone valve 15 is fixed with adjusting block 17 through connecting axle 16, be provided with pressure regulating spring 18 between adjusting block 17 and the pressure regulating handle 19, can adjust the pressure of pressure regulating spring 18 through rotating pressure regulating handle 19, adjusting block 17 and the laminating of pilot valve 2 inner wall, and adjusting block 17 and pilot valve 2 sliding fit, and first interface 13 is located the below adjusting block 17, adjusting block 17 blocks up first interface 13 under the normal condition, and when internal pressure is great, promote adjusting block 17 to move, make first interface 13 open.
In this embodiment, when the pressure relief valve is in use, liquid enters the first hydraulic area 3 and the second hydraulic area 4 through the liquid inlet 10, and enters the liquid outlet 12 through the connecting passage 11, when the internal pressure is small and pressure relief is required, the cone valve 15 is pushed to open by the liquid, the liquid enters the second hydraulic area 4 through the second connecting hole 14, the liquid in the cavity in the second hydraulic area 4 is discharged through the liquid outlet 12, so that the internal pressure is zero, the valve core 7 is pushed to move upwards, the second overflow port 6 is opened, the internal pressure is relieved through the second hydraulic area 4, and when the internal pressure is large, the liquid continues to push the adjusting block 17 to move inwards after pushing the cone valve 15 to open, so that the first connecting hole 13 is opened, so that the internal pressure relief can be quickly performed through the first hydraulic area 3 and the second hydraulic area 4 at the same time, so as to meet the use requirement, and reduce the potential safety hazard.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (3)
1. The improved structure of the pilot one-way overflow valve comprises a valve body (1) and a pilot valve (2) arranged on the valve body (1), wherein the valve body (1) is connected with the pilot valve (2) through a connecting channel (11), and is characterized in that a liquid inlet (10) is formed in one side of the valve body (1), a first hydraulic area (3) and a second hydraulic area (4) are formed in the valve body (1), and the first hydraulic area (3) and the second hydraulic area (4) are communicated with the interior of the pilot valve (2) through a first connecting hole (13) and a second connecting hole (14) respectively;
the first hydraulic area (3) is communicated with the second hydraulic area (4), one side of the first hydraulic area (3) is connected with the liquid inlet (10), and the bottom ends of the first hydraulic area (3) and the second hydraulic area (4) are respectively provided with a first overflow port (5) and a second overflow port (6);
valve cores (7) are arranged inside the first hydraulic area (3) and the second hydraulic area (4), damping holes (71) are formed in the valve cores (7), and a main valve spring (9) is arranged at the top end of each valve core (7);
a liquid outlet (12) is formed in one end of the pilot valve (2), a pressure regulating handle (19) is arranged at the other end of the pilot valve (2), a cone valve (15) is arranged in the pilot valve (2) in a sliding mode, an adjusting block (17) is fixed to the end face of the cone valve (15) through a connecting shaft (16), and a pressure regulating spring (18) is arranged between the adjusting block (17) and the pressure regulating handle (19);
the connecting channel (11) is positioned in the second hydraulic area (4), and the connecting channel (11) is communicated with the liquid outlet (12);
the adjusting block (17) is attached to the inner wall of the pilot valve (2), the adjusting block (17) is in sliding fit with the pilot valve (2), and the first connecting hole (13) is located below the adjusting block (17);
a through hole is formed between the liquid outlet (12) and the cone valve (15), the through hole is located in the pilot valve (2), and the cone valve (15) is matched with the through hole.
2. The improved structure of the pilot one-way overflow valve according to claim 1, wherein an overflow hole (8) is formed in the middle of the valve core (7), and the overflow hole (8) penetrates through the upper end and the lower end of the valve core (7).
3. The improved structure of the pilot one-way overflow valve according to claim 1, characterized in that the pressure regulating handle (19) is in threaded connection with the pilot valve (2), and an anti-skid layer is arranged on the outer wall of the pressure regulating handle (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111620736.5A CN114321065B (en) | 2021-12-28 | 2021-12-28 | Improved structure of pilot one-way overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111620736.5A CN114321065B (en) | 2021-12-28 | 2021-12-28 | Improved structure of pilot one-way overflow valve |
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| Publication Number | Publication Date |
|---|---|
| CN114321065A CN114321065A (en) | 2022-04-12 |
| CN114321065B true CN114321065B (en) | 2022-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111620736.5A Active CN114321065B (en) | 2021-12-28 | 2021-12-28 | Improved structure of pilot one-way overflow valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116983097B (en) * | 2023-09-06 | 2024-03-12 | 首都医科大学附属北京同仁医院 | Tray with operation cavity flushing water supply groove |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1194106A (en) * | 1997-09-25 | 1999-04-09 | Toyooki Kogyo Co Ltd | Pilot operated relief valve |
| CN203614492U (en) * | 2013-10-28 | 2014-05-28 | 宁波明启液压机械有限公司 | Pilot type overflow valve |
| CN203717511U (en) * | 2014-02-21 | 2014-07-16 | 无锡煤矿机械厂有限公司 | Mass flow overflow structure for pump station overflow valve |
| CN204553937U (en) * | 2015-03-30 | 2015-08-12 | 四川工程职业技术学院 | Parallel reducer unit |
| CN105443483A (en) * | 2015-12-11 | 2016-03-30 | 苏州源硕精密模具有限公司 | Overflow valve |
| CN209100380U (en) * | 2018-10-02 | 2019-07-12 | 南京六合煤矿机械有限责任公司 | A kind of pilot-operated type two-way overflow valve |
| CN110966277A (en) * | 2018-09-30 | 2020-04-07 | 江苏凯亚环保科技有限公司 | Overflow valve |
-
2021
- 2021-12-28 CN CN202111620736.5A patent/CN114321065B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1194106A (en) * | 1997-09-25 | 1999-04-09 | Toyooki Kogyo Co Ltd | Pilot operated relief valve |
| CN203614492U (en) * | 2013-10-28 | 2014-05-28 | 宁波明启液压机械有限公司 | Pilot type overflow valve |
| CN203717511U (en) * | 2014-02-21 | 2014-07-16 | 无锡煤矿机械厂有限公司 | Mass flow overflow structure for pump station overflow valve |
| CN204553937U (en) * | 2015-03-30 | 2015-08-12 | 四川工程职业技术学院 | Parallel reducer unit |
| CN105443483A (en) * | 2015-12-11 | 2016-03-30 | 苏州源硕精密模具有限公司 | Overflow valve |
| CN110966277A (en) * | 2018-09-30 | 2020-04-07 | 江苏凯亚环保科技有限公司 | Overflow valve |
| CN209100380U (en) * | 2018-10-02 | 2019-07-12 | 南京六合煤矿机械有限责任公司 | A kind of pilot-operated type two-way overflow valve |
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| CN114321065A (en) | 2022-04-12 |
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