CN103016796B - A valve body assembly of a high-pressure, large-flow, quick-response two-position, two-way valve - Google Patents

Abstract

A valve body assembly of a high-pressure large-flow quick-response two-position two-way valve belongs to a valve body assembly in a fluid control system. The valve body assembly comprises an inner valve core, a valve sleeve, a first blocking block, a second blocking block, a valve side shell and the like. The first blocking block is nested in the inner valve core, and the inner valve core and the second blocking block are respectively nested in the valve sleeve from the left end and the right end; the valve sleeve is nested inside the valve side shell. The moving parts in the valve body assembly, namely the inner valve core and the valve sleeve, adopt fluid pressure balance structures, the movement of the moving parts is not influenced by the pressure of the controlled fluid, and the moving parts can be used for controlling the high-pressure fluid. In the switching process, the inner valve core and the valve sleeve synchronously move in opposite directions, so that the response time of the valve body is shortened, the total stroke of the valve body is increased, and the contradiction between shortening of the response time and increasing of the armature stroke of the traditional valve body is solved. The valve body assembly can be used in fluid control occasions requiring high pressure, large flow and quick response at the same time.

Description

A valve body assembly of a high-pressure, large-flow, quick-response two-position, two-way valve

technical field

The utility model relates to a valve body assembly of a two-position two-way valve with high pressure and large flow rate and rapid response, which belongs to the valve body assembly in a fluid control system.

Background technique

Fluid control systems such as hydraulics and pneumatics have been widely used in various sectors of the national economy because of their advantages such as flexible control, large power-to-weight ratio, smooth movement, simple structure, and easy layout. As the main control part of the system, the rapid response capability, flow capacity and high pressure bearing capacity of the valve body assembly are directly related to the further expansion of the application field of the fluid control system. For example, the valve body components used in the fields of vehicle electronic control injection system or variable valve drive system need to meet the response time of milliseconds or lower, the instantaneous flow rate of tens of liters per minute, and the work of tens or even hundreds of megapascals. pressure requirements. However, there are mutual constraints among the above indicators of conventional valve body assemblies. The quick response capability requires the movement stroke of the valve body assembly to be as small as possible, while the flow capacity requires the flow area of the valve body assembly to be as large as possible, and there is a contradiction between the two; It is in a state of fluid pressure balance to eliminate the influence of the controlled fluid pressure. For this, the slide valve structure is the most suitable. On the other hand, it requires good sealing ability. For this, the cone valve or ball valve is the most suitable. In addition, in order to maintain sealing, the stroke of the spool valve is large, which is in conflict with the quick response ability.

Contents of the invention

The purpose of the present invention is to provide a high-pressure, high-flow, fast-response two-position two-way valve body assembly for the main control components of the fluid control system, especially when high quick response capability, flow capacity, and high pressure withstand capability are required. , the valve body assembly uses multiple moving parts to move synchronously, achieving the purpose of shortening the response time of the valve body and increasing the flow area of the valve body at the same time, and each moving part adopts a fluid pressure balance structure, which has excellent high pressure bearing capacity .

The technical solution adopted in the present invention is: a valve body assembly of a two-position two-way valve with high pressure and large flow rate and fast response, which includes an inner valve core, a valve sleeve, a driving device, a reset device and a casing, and also includes a blocking block. The blocking block includes a first blocking block and a second blocking block; the first blocking block is nested inside the inner valve core; the inner valve core and the second blocking block are respectively nested inside the valve sleeve from the left and right ends; the valve sleeve nesting Inside the housing on the valve side.

The sealing ring surface of the inner valve core on the outer side of the right end of the inner valve core forms an annular seal with the inner middle part of the valve sleeve and the sealing ring surface of the valve sleeve near the first communication port of the valve sleeve; The cross-sectional area of the sealing ring surface of the inner spool is the same as the cross-sectional area of the fluid pressure balance ring surface of the inner spool near the first block and inside the inner spool.

The cross-sectional area of the sealing ring surface of the valve sleeve near the first communication port of the valve sleeve at the middle part of the inner side of the valve sleeve and the cross-sectional area of the fluid pressure balance ring surface of the valve sleeve near the second communication port of the valve sleeve and the middle part of the inner side of the valve sleeve same.

Adjust the stroke of the inner spool by adjusting the distance between the thrust surface of the inner spool on the right end of the inner spool and the thrust surface of the second block on the left end of the second block; by adjusting the right end of the inner spool The sum of the strokes of the inner spool and the valve sleeve can be adjusted by using the sealing ring surface of the inner valve core on the outer side of the valve sleeve and the sealing ring surface of the valve sleeve at the middle part of the inner side of the valve sleeve near the first communication port of the valve sleeve.

 The beneficial effects of the present invention are: the first blocking block of the valve body assembly of the high-pressure, high-flow and quick-response two-position two-way valve is nested inside the inner valve core, and the inner valve core and the second blocking block are respectively embedded from the left and right ends. Set inside the valve sleeve; the valve sleeve is nested inside the valve side shell. The moving parts in the valve body assembly, that is, the inner valve core and the valve sleeve all adopt a fluid pressure balance structure, and their movement is not affected by the pressure of the controlled fluid, and can be used for the control of high-pressure fluid. During the switching process, the inner spool and the valve sleeve move synchronously and reversely, which shortens the response time of the valve body and increases the total stroke of the valve body, which solves the problem of shortening the response time and increasing the armature stroke of the traditional valve body at the same time. Contradictory, it can be used in fluid control occasions that require high pressure, large flow and fast response at the same time.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a structural schematic diagram of a valve body assembly of a high-pressure, high-flow, quick-response two-position two-way valve.

Fig. 2 is a structural schematic diagram of a valve body assembly of a high-pressure, high-flow, fast-response two-position two-way valve adopting an electromagnetically driven spring reset.

In the figure: 1. the first block, 1a. the limit surface of the first block; 2. the inner spool, 2a. the limit surface of the inner spool, 2b. the fluid pressure balance ring surface of the inner spool, 2c. the inner valve Core sealing ring surface, 2d. Inner valve core thrust surface, 3. Valve sleeve, 3a. Valve sleeve first communication port, 3b. Valve sleeve sealing ring surface, 3c. Valve sleeve fluid pressure balance ring surface, 3d. Second communication port, 3e. valve sleeve limit surface, 4. valve side housing, 4a. valve side housing first communication port, 4b. valve side housing second communication port, 5. second block, 5a. second block block thrust surface, 5b. second block limit surface, 6. first armature, 7. magnetic sleeve, 8. drive side shell, 9. first yoke, 10. electromagnetic coil, 11. magnetic isolation ring, 12. Return spring, 13. Second yoke, 14. Second armature.

Detailed ways

The valve side shell 4 in the valve body assembly of a high-pressure, high-flow, quick-response two-position two-way valve of this specific embodiment is connected to the controlled oil circuit of the applied fluid control system in a plug-in manner. In practical applications, according to the requirements of practical applications, the inner valve core 2 can be driven by electromagnetic, mechanical, hydraulic or pneumatic methods; the inner valve core 2 can be reset by mechanical or hydraulic feedback or pneumatic feedback. The valve sleeve 3 can be driven by electromagnetic, mechanical, hydraulic or pneumatic methods; the valve sleeve 3 can be reset by mechanical or hydraulic feedback or pneumatic feedback. The valve-side housing 4 can be connected to the controlled oil circuit of the applied fluid control system by means of plug-in or threaded connection.

As shown in Figure 1 and Figure 2, a valve body assembly of a two-position two-way valve with high pressure and large flow rate quick response includes an inner valve core 2, a valve sleeve 3 and a valve side shell 5, and its feature is that it also includes a blocking block, The block includes a first block 1 and a second block 5; the first block 1 is nested inside the inner spool 2; the inner spool 2 and the second block 5 are respectively nested in the valve from the left and right ends Inside the sleeve 3; the valve sleeve 3 is nested inside the valve side housing 4. The inner valve core sealing ring surface 2c on the inner valve core 2 and the valve sleeve sealing ring surface 3b on the valve sleeve 3 form an annular seal.

The cross-sectional area of the inner spool sealing ring surface 2c on the inner spool 2 is the same as the cross-sectional area of the inner spool fluid pressure balance ring surface 2b, and the inner spool 2 is not affected by the pressure of the controlled fluid. The cross-sectional area of the valve sleeve sealing ring surface 3b on the valve sleeve 3 is the same as the cross-sectional area of the fluid pressure balance ring surface 3c of the valve sleeve, and the valve sleeve 3 is not affected by the pressure of the controlled fluid.

By adjusting the distance between the inner spool thrust surface 2d on the inner spool 2 and the second block thrust surface 5a on the second block 5, the stroke of the inner spool 2 is adjusted; The inner spool sealing ring surface 2c and the valve sleeve sealing ring surface 3b on the valve sleeve 3 are used to adjust the stroke sum of the inner valve core 2 and the valve sleeve 3 .

Next, the working principle of a high-pressure, high-flow, fast-response two-position two-way valve body assembly will be described by taking the electromagnetically driven spring reset as an example. As shown in FIG. 2 , the electromagnetic drive part mainly includes an electromagnetic coil 10 , a first armature 6 , a second armature 14 , a magnetic sleeve 7 , a drive side housing 8 , a first yoke 9 , a second yoke 13 and the like. Wherein, the electromagnet can adopt a solenoid structure. Both the first armature 6 and the second armature 14 have a columnar structure and are arranged inside the magnetic sleeve 7 . The electromagnetic coil 10 is wound on the magnetic sleeve 7 , the electromagnetic coil 10 and the magnetic sleeve 7 are fixedly installed inside the first magnetic yoke 9 , and the first magnetic yoke 9 is fixedly installed inside the driving side housing 8 . The second yoke 13 is fixedly mounted on the magnetic sleeve 7 , and its end surface is attached to the end surface of the first yoke 9 . The first armature 6 is fixedly connected with the inner valve core 2 , and the second armature 14 is fixedly connected with the valve sleeve 3 . The working principle of the valve body assembly of a high-pressure, large-flow, quick-response two-position two-way valve is:

1) Initial state maintenance stage: when the electromagnetic coil 10 is not energized, the positions of each part of the valve body assembly are in the initial state, as shown in FIG. 2 . The inner spool sealing ring surface 2c on the inner spool 2 is not in contact with the valve sleeve sealing ring surface 3b on the valve sleeve 3, and the first communication port 3a of the valve sleeve is connected with the second communication port 3d of the valve sleeve, that is, the second communication port 3d of the valve side housing. A communication port 4a is connected with the second communication port 4b of the valve side housing. At this time, the valve sleeve limit surface 3e on the valve sleeve 3 is in contact with the second block limit surface 5b on the second block 5, which limits the position of the valve sleeve 3 in the initial state. The inner spool limiting surface 2 a on the inner spool 2 is in contact with the first block limiting surface 1 a on the first block 1 to limit the initial position of the inner spool 2 .

2) The switching stage from the initial state to the switching state: when the electromagnetic coil 10 is energized, the first armature 6 drives the inner valve core 2 to move to the right under the action of the electromagnetic force to the right, and the second armature 14 moves to the right under the electromagnetic force to the left. Drive the valve sleeve 3 to move to the left under the action of the valve. At this time, the distance between the inner valve core sealing ring surface 2c on the inner valve core 2 and the valve sleeve sealing ring surface 3b on the valve sleeve 3 gradually decreases.

3) Switching state maintenance stage: When the inner spool 2 moves to the point where the inner spool thrust surface 2d on the inner spool 2 contacts the second block thrust surface 5a on the second block 5, it stops moving. This position is the position of the inner spool 2 in the switching state. When the valve sleeve 3 moves to the inner spool sealing ring surface 2c on the inner valve core 2 and the valve sleeve sealing ring surface 3b on the valve sleeve 3, it stops moving. This position is the position where the valve sleeve 3 is in the switching state. The inner valve core sealing ring surface 2c on the inner valve core 2 is in contact with the valve sleeve sealing ring surface 3b on the valve sleeve 3 to form an annular seal. The first communication port 3a of the valve sleeve is disconnected from the second communication port 3d of the valve sleeve, that is, the first communication port 4a of the valve side housing is disconnected from the second communication port 4b of the valve side housing.

4) Switching stage from the switching state to the initial state: when the electromagnetic coil 10 is powered off, the electromagnetic force on the first armature 6 and the second armature 14 gradually decreases. The first armature 6 drives the inner valve core 2 to move to the left, and the second armature 14 drives the valve sleeve 3 to move to the right. At this time, the distance between the inner valve core sealing ring surface 2c on the inner valve core 2 and the valve sleeve sealing ring surface 3b on the valve sleeve 3 increases gradually.

It can be seen from the above that whether it is in the switching stage from the initial state to the switching state, or in the switching stage from the switching state to the initial state, the inner valve core 2 and the valve sleeve 3 perform synchronous reverse movement, which shortens the response time of the valve body and increases The total stroke of the valve body is improved, and the contradiction between shortening the response time and increasing the armature stroke of the traditional valve body is solved. The moving parts in the valve body assembly, that is, the inner valve core 2 and the valve sleeve 3 both adopt a fluid pressure balance structure, and their movement is not affected by the pressure of the controlled fluid. Therefore, the present invention can be used in fluid control occasions requiring high pressure, large flow rate and quick response at the same time.

Claims (2)

1. a high-pressure high-flow responds the valve component of 2/2-way valve fast, it comprises inner spool (2), valve pocket (3), drive unit, resetting means and shell, it is characterized in that: further comprising sprue, described sprue comprises the first sprue (1) and the second sprue (5); The first sprue (1) is nested in inner spool (2) inside; Inner spool (2) and the second sprue (5) are nested in respectively valve pocket (3) inside from two ends, left and right; Valve pocket (3) is nested in valve side shell (4) inside; Inner spool sealing ring surface (2c) on outside, described inner spool (2) right-hand member end forms annular seal with the valve pocket sealing ring surface (3b) that valve pocket (3) middle inside, close valve pocket the first connecting port (3a) are located; The cross-section area of the inner spool sealing ring surface (2c) on outside, inner spool (2) right-hand member end is located with close the first sprue (1), the cross-section area of the inner spool fluid pressure balance anchor ring (2b) of inner spool (2) inner side is identical; The cross-section area of the valve pocket sealing ring surface (3b) that described valve pocket (3) middle inside, close valve pocket the first connecting port (3a) are located is located with close valve pocket the second connecting port (3c), valve pocket fluid pressure balance anchor ring (3c) cross-section area of valve pocket (3) middle inside is identical; Original state to the switch step of switching state or at switching state the switch step to original state, inner spool (2) and valve pocket (3) carry out synchronous backward motion.

2. a kind of high-pressure high-flow according to claim 1 responds the valve component of 2/2-way valve fast, it is characterized in that: the stroke that regulates inner spool (2) by the inner spool thrust face (2d) on adjusting inner spool (2) right-hand member end and the distance between the second sprue thrust face (5a) on the second sprue (5) left end end; The valve pocket sealing ring surface (3b) of locating by the inner spool sealing ring surface (2c) on outside, adjusting inner spool (2) right-hand member end and valve pocket (3) middle inside, close valve pocket the first connecting port (3a) regulates the stroke sum of inner spool (2) and valve pocket (3).