CN111120698A - Pilot valve and main valve integrated valve combination - Google Patents
Pilot valve and main valve integrated valve combination Download PDFInfo
- Publication number
- CN111120698A CN111120698A CN201911312973.8A CN201911312973A CN111120698A CN 111120698 A CN111120698 A CN 111120698A CN 201911312973 A CN201911312973 A CN 201911312973A CN 111120698 A CN111120698 A CN 111120698A
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- CN
- China
- Prior art keywords
- valve
- pilot valve
- pilot
- main
- main valve
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- 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.)
- Pending
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Classifications
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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
- F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
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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
- F16K27/00—Construction of housing; Use of materials therefor
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
Abstract
The invention relates to the technical field of control valves of engineering machinery, in particular to an integrated structure of a pilot valve and a main valve, which comprises a main valve, a pilot valve installation block and a pilot valve; the pilot valve is arranged on the pilot valve mounting block; the pilot valve mounting block is fixed on the main valve. The invention solves the problems of large occupied space and complex effect control of the connection mode of the pilot valve and the main valve in the prior art, the pilot valve and the main valve are integrally installed through the oil way end cover, the pipeline installation is avoided, and the connection mode of the pilot valve and the main valve has the advantages of simple process, space saving, variable combination forms and strong assembly applicability.
Description
Technical Field
The invention relates to the technical field of control valves of engineering machinery, in particular to an integrated structure of a pilot valve and a main valve.
Background
The pilot valve is electrified, the valve rod is lifted by means of electromagnetic force, the pilot valve port is opened, the upper cavity of the electromagnetic valve is relieved by the pilot hole at the moment, low-high differential pressure is formed around the main valve core, and under the action of the differential pressure, the fluid pressure pushes the main valve core to move upwards to open the main valve port; when the power is cut off, under the action of spring force and gravity of the main valve core, the valve rod is reset, the pilot hole is closed, the main valve core moves downwards, and the main valve port is closed; the pressure of the upper cavity of the electromagnetic valve is increased, and the fluid pressure pressurizes the main valve core, so that the sealing is better.
The plug-in type electromagnetic valve is installed in a mode of inserting the installation block.
At present, a control valve of an engineering machine is mainly of a hydraulic control structure and is divided into a pilot valve and a main valve (a multi-way valve, the same applies below), the pilot valve and the main valve are of a split structure, the pilot valve is a control mechanism for operating other valves or elements, and an auxiliary valve is used and is connected with the pilot valve and the main valve through a hydraulic pipeline. Under the condition that the oil circuit of the main valve is complex, the connection mode of the pilot valve and the main valve requires large space and the pipeline installation process is complex due to mutual interference; secondly, in order to ensure the control effect of the pilot valve on the main valve, the pipeline installation process has high requirements and high cost.
Disclosure of Invention
In order to solve the problems of large occupied space and complex effect handling of the connection mode of the pilot valve and the main valve in the prior art, an integrated structure of the pilot valve and the main valve is provided, the pilot valve is integrally installed with the main valve through an oil way end cover, the pipeline installation is avoided, and the connection mode of the pilot valve and the main valve is simple in process and saves space.
In order to achieve the purpose, the invention adopts the following specific technical scheme:
a pilot valve and main valve integrated valve combination comprises a main valve, a pilot valve mounting block and a pilot valve; the pilot valve is arranged on the pilot valve mounting block; the pilot valve mounting block is fixed on the main valve.
Further, the main valve is a multi-way valve, and the pilot valves are electromagnetic valves or electro-hydraulic servo valves and are in multiple groups.
Preferably, the pilot valve mounting block is mounted in contact with the main valve, and an oil inlet path, an oil return path, a pilot valve mounting hole and a control oil path are arranged inside and on the surface of the pilot valve mounting block; the oil inlet oil way is used for providing a pressure source for the pilot valve; the oil return oil way is used for connecting the oil return of the pilot valve; the pilot valve is arranged in the pilot valve mounting hole; the control oil way is used for communicating the pilot valve with the main valve so as to control the valve core of the main valve to move.
Further, the pilot valve is a cartridge valve.
In order to further save the installation space and improve the tightness, the pilot valve installation block is installed on the valve body.
In order to have a plurality of different installation forms and further improve the assembly adaptability, the pilot valve installation block and the main valve installation have the following forms:
1) the pilot valve mounting block and the end cover of the main valve are of an integral structure;
2) the pilot valve mounting block and the end cover of the main valve are of independent structures;
3) the pilot valve mounting block and the end cover of the main valve are of a combined structure.
Further limiting, when the pilot valve installation block and the end cover of the main valve are in an integrated structure, an oil inlet oil way, an oil return oil way, a main valve core spring cavity, a pilot valve installation hole and a control oil way are arranged inside and on the surface of the pilot valve installation block; and the valve core spring of the main valve is arranged in the valve core spring cavity of the main valve.
In order to ensure the installation sealing performance, a sealing element is arranged between the pilot valve and the installation surface of the pilot valve installation block.
In order to ensure the installation sealing performance, a sealing element is arranged between the pilot valve installation block and the installation plane of the main valve.
The invention can bring the following beneficial effects:
by adopting the technical scheme, the invention can bring the following beneficial effects:
1) the pilot valve and the main valve are of an integrated structure, the system space is saved, the guide pipe is omitted, an integrated pilot valve installation block is used for connection, the assembly process of the pilot valve and the main valve is simplified, and the cooperation is tighter.
2) And a control oil way is additionally arranged on an end cover of the main valve, so that the system space is further saved and the production cost is reduced.
3) The pilot valve and the main valve can be designed into various combination forms according to specific requirements so as to adapt to assembly requirements, and the assembly adaptability of the pilot valve and the main valve integrated structure is high.
Drawings
FIG. 1 is an embodiment of an integrated end cover of a pilot valve and a main valve, which is an end cover of the main valve;
FIG. 2 is a schematic diagram of an embodiment of an integrated end cap of a pilot valve and a main valve, which is two end caps of the main valve;
FIG. 3 is an embodiment of an integrated structural end cap of a pilot valve and a main valve mounted on a valve body of the main valve;
wherein: 1. a main valve; 2. an end cap; 3. a pilot valve; 4. and a pilot valve mounting block.
Detailed Description
The invention will now be described in detail with reference to the drawings attached hereto.
In one embodiment of the invention, the invention relates to a pilot valve and main valve integrated valve combination, which comprises a main valve pilot valve 1, a pilot valve installation block pilot valve 4 and a pilot valve 3; the pilot valve 3 is arranged on a pilot valve installation block 4; and the pilot valve installation block 4 is fixed on the main valve pilot valve 1.
In one embodiment, the main valve pilot valve 1 is a multi-way valve, and the pilot valve 3 pilot valves are solenoid valves or electro-hydraulic servo valves and are in multiple groups.
In one embodiment, the pilot valve installation block 4 is installed in contact with the main valve 1, and an oil inlet path, an oil return path, a pilot valve installation hole and a control oil path are arranged inside and on the surface of the pilot valve installation block 4; the oil inlet oil way is used for providing a pressure source for a pilot valve of the pilot valve 3; the oil return oil way is used for connecting oil return of a pilot valve of the pilot valve 3; the pilot valve 3 is arranged in the pilot valve mounting hole; and the control oil path is used for communicating the pilot valve 3 with the main valve pilot valve 1 so as to control the movement of the valve element of the main valve pilot valve 1.
In one embodiment, the pilot valve 3 is a cartridge valve.
In one embodiment, the pilot valve mounting block pilot valve 4 is pilot valve mounted on the valve body.
In one embodiment, in order to have a plurality of different installation forms and further improve the assembly adaptability, the pilot valve installation block, the pilot valve 4, the pilot valve and the main valve installation have the following forms:
1) the pilot valve installation block 4 pilot valve and the end cover pilot valve 2 pilot valve of the main valve pilot valve 1 pilot valve are of an integrated structure;
2) the pilot valve installation block 4 pilot valve and the end cover pilot valve 2 pilot valve of the main valve pilot valve 1 pilot valve are independent structures;
3) the pilot valve installation block 4 pilot valve and the end cover 2 pilot valve of the main valve 1 pilot valve are combined.
In one embodiment, when the pilot valve installation block 4 and the end cover 2 of the main valve 1 are integrated, an oil inlet channel, an oil return channel, a main valve 1 and a pilot valve spool spring cavity, a pilot valve installation hole and a control oil channel are arranged inside and on the surface of the pilot valve installation block 4; and a valve core spring of the main valve pilot valve 1 is arranged in a valve core spring cavity of the main valve pilot valve 1.
In one embodiment, in order to ensure the installation sealing performance, a sealing member is arranged between the installation surfaces of the pilot valves of the pilot valve 3 and the pilot valve installation block 4.
In one embodiment, to ensure the installation tightness, a sealing member is arranged between the installation planes of the pilot valve installation block 4 pilot valve and the main valve pilot valve 1 pilot valve.
Claims (9)
1. A pilot valve and main valve integrated valve combination is characterized by comprising a main valve (1), a pilot valve mounting block (4) and a pilot valve (3); the pilot valve (3) is arranged on the pilot valve mounting block (4); the pilot valve mounting block (4) is fixed on the main valve (1).
2. A pilot valve and main valve integrated valve combination according to claim 1, wherein the main valve (1) is a multi-way valve, and the pilot valves (3) are solenoid valves or electro-hydraulic servo valves and are in multiple groups.
3. The pilot valve and main valve integrated valve combination according to claim 1, wherein the pilot valve mounting block (4) is mounted in contact with the main valve (1), and an oil inlet passage, an oil return passage, a pilot valve mounting hole and a control oil passage are arranged inside and on the surface of the pilot valve mounting block (4); the oil inlet oil way is used for providing a pressure source for the pilot valve (3); the oil return oil way is used for connecting the oil return of the pilot valve (3); the pilot valve (3) is arranged in the pilot valve mounting hole; the control oil way is used for communicating the pilot valve (3) with the main valve (1) so as to control the valve core of the main valve (1) to move.
4. A pilot valve and main valve integrated valve combination according to claim 1, characterised in that the pilot valve (3) is a cartridge valve.
5. A pilot valve and main valve integrated valve combination according to claims 1 and 3, characterized in that the pilot valve mounting block (4) is mounted on the valve body.
6. A pilot valve and main valve integrated valve combination according to any one of claims 1, 3, 4 and 5, wherein the pilot valve mounting block (4) and the main valve mounting have the following form:
1) the pilot valve mounting block (4) and the end cover (2) of the main valve (1) are of an integral structure;
2) the pilot valve mounting block (4) and the end cover (2) of the main valve (1) are of independent structures;
3) the pilot valve mounting block (4) and the end cover (2) of the main valve (1) are of a combined structure.
7. The pilot valve and main valve integrated valve combination as claimed in claim 6, wherein when the pilot valve mounting block (4) and the end cover (2) of the main valve (1) are of an integral structure, an oil inlet passage, an oil return passage, a valve element spring cavity of the main valve (1), a pilot valve mounting hole and a control oil passage are arranged inside and on the surface of the pilot valve mounting block (4); and a valve core spring of the main valve (1) is arranged in a valve core spring cavity of the main valve (1).
8. A pilot valve and main valve integrated valve combination according to claim 1, characterized in that a sealing member is provided between the mounting surfaces of the pilot valve (3) and the pilot valve mounting block (4).
9. A pilot valve and main valve integrated valve combination according to claim 1, characterized in that a sealing is arranged between the pilot valve mounting block (4) and the mounting plane of the main valve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911312973.8A CN111120698A (en) | 2019-12-18 | 2019-12-18 | Pilot valve and main valve integrated valve combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911312973.8A CN111120698A (en) | 2019-12-18 | 2019-12-18 | Pilot valve and main valve integrated valve combination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111120698A true CN111120698A (en) | 2020-05-08 |
Family
ID=70499691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911312973.8A Pending CN111120698A (en) | 2019-12-18 | 2019-12-18 | Pilot valve and main valve integrated valve combination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111120698A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5209263A (en) * | 1990-02-27 | 1993-05-11 | Kabushiki Kaisha Komatsu Seisakusho | Pilot valve assembly |
| CN101324180A (en) * | 2008-07-31 | 2008-12-17 | 河北华北石油荣盛机械制造有限公司 | Underwater hydraulic reversing valve |
| CN102162476A (en) * | 2011-06-02 | 2011-08-24 | 山东泰丰液压股份有限公司 | High-flow hydraulic feedback pilot control plug-type proportion throttle valve system |
| CN102748506A (en) * | 2012-06-21 | 2012-10-24 | 中煤张家口煤矿机械有限责任公司 | Electro-hydraulic pilot control switch valve bank |
| CN102817877A (en) * | 2011-06-09 | 2012-12-12 | 华中科技大学 | Water switch control valve |
| CN104864137A (en) * | 2015-05-20 | 2015-08-26 | 安徽理工大学 | Pilot-operated type water pressure overflow valve |
-
2019
- 2019-12-18 CN CN201911312973.8A patent/CN111120698A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5209263A (en) * | 1990-02-27 | 1993-05-11 | Kabushiki Kaisha Komatsu Seisakusho | Pilot valve assembly |
| CN101324180A (en) * | 2008-07-31 | 2008-12-17 | 河北华北石油荣盛机械制造有限公司 | Underwater hydraulic reversing valve |
| CN102162476A (en) * | 2011-06-02 | 2011-08-24 | 山东泰丰液压股份有限公司 | High-flow hydraulic feedback pilot control plug-type proportion throttle valve system |
| CN102817877A (en) * | 2011-06-09 | 2012-12-12 | 华中科技大学 | Water switch control valve |
| CN102748506A (en) * | 2012-06-21 | 2012-10-24 | 中煤张家口煤矿机械有限责任公司 | Electro-hydraulic pilot control switch valve bank |
| CN104864137A (en) * | 2015-05-20 | 2015-08-26 | 安徽理工大学 | Pilot-operated type water pressure overflow valve |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20200508 |