CN210949928U

CN210949928U - Valve gasket with air relief groove and proportional valve with valve gasket

Info

Publication number: CN210949928U
Application number: CN201921251589.7U
Authority: CN
Inventors: 叶长江
Original assignee: Xiamen Koge Micro Tech Co Ltd
Current assignee: Xiamen Koge Micro Tech Co Ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-07-07
Anticipated expiration: 2029-08-02

Abstract

The utility model relates to a gasket for valve with let out gas groove and have its proportional valve, wherein, the gasket for valve includes the lamellar body, the lamellar body has elasticity, the working end face has on the lamellar body, be provided with concave and convex lines on the working end face, concave and convex lines include the groove of losing heart of at least one bellied rib and/or at least one indent, the center of concave and convex lines and the central coincidence of working end face.

Description

Valve gasket with air relief groove and proportional valve with valve gasket

Technical Field

The invention relates to the technical field of fluid control, in particular to a valve gasket with an air relief groove and a proportional valve with the valve gasket.

Background

The electromagnetic valve is a device controlled by electromagnetism, is an automatic basic element for controlling fluid and belongs to an actuator. In devices such as a sphygmomanometer, an electromagnetic valve is often needed to control the gas in the cuff of the sphygmomanometer to be smoothly discharged at a certain rate, so as to ensure that the pressure in the cuff of the sphygmomanometer is smoothly reduced. And the solenoid valve is a proportional valve. A proportional valve is a solenoid valve that is capable of making a proportional variable control of the flow of fluid. The proportional valve can change the displacement of the middle shaft by changing the current of the coil, thereby changing the opening of the valve port and realizing the control of the proportional valve on the outlet flow.

At present, the grant bulletin number is CN204628577U, disclose a proportional valve, this proportional valve mainly includes the valve casing, the slip sets up in the inside axis of valve casing and the valve block of axle tip is located to the cover, be provided with on the valve casing and be used for communicating the inside and external first opening of valve casing, the valve block forms into the inclined plane towards first open-ended side surface, the in-process that removes along upper and lower direction of axis drive valve block, the area that first opening is sheltered from by the first open-ended side surface of orientation of valve block can change gradually, thereby the aperture of first opening can change gradually, and then can realize that first open-ended aperture is adjustable, make the proportional valve can carry out continuous control to the fluid.

However, in the valve plate with the single-side inclined surface, the valve plate and the first opening are matched to be in single-line collision, and because the stressed center deviates from the center line of the valve plate, the valve plate is easy to deviate in an uncontrollable manner in actual contact with the first opening, so that the deformation error of the valve plate is large, and the fluctuation of the air release rate of the proportional valve is large.

Disclosure of Invention

The invention aims to provide a valve gasket with an air relief groove, which has the advantage of small deformation error.

The invention aims to be realized by the following technical scheme:

the utility model provides a gasket for valve with let out gas groove, includes the lamellar body, the lamellar body has elasticity, the working end face has on the lamellar body, be provided with concave convex line on the working end face, concave convex line includes the let out gas groove of at least one indent, the central line or the line of symmetry of letting out gas groove coincide with the center of working end face.

Through adopting above-mentioned technical scheme, the central line or the line of symmetry of disappointing groove coincide with the center of working end face to use the center of working end face to carry out symmetrical deformation as the central point when making the working end face receive pressure deformation, from this, reduced the offset of lamellar body, thereby reduce the deformation error of this gasket for valve.

The invention is further configured to: the number of the air release grooves is one, and the center line of each air release groove penetrates through the center of the working end face.

Through adopting above-mentioned technical scheme, what set up on the working end face is when letting out the gas tank, the center that the working end face was passed to the groove of losing gas, the both sides that let out the gas tank on the working end face receive pressure earlier, the both sides that let out the gas tank on the lamellar body take place deformation earlier, and deformation extends to the center of working end face gradually, thereby make the elastic deformation power on the working end face be greater than the elastic deformation power that lets out the gas tank in, and when the pressure on the working end face reduces, under the effect of elastic deformation power on the working end face, the groove of losing gas restores deformation in advance, therefore, the offset of lamellar body has been reduced, thereby reduce the deformation error of this gasket for the valve.

The invention is further configured to: the number of the air leakage grooves is at least two, and the center lines of the air leakage grooves are symmetrically distributed or circumferentially distributed by taking the center of the working end face as a center point.

Through adopting above-mentioned technical scheme, when a plurality of let out the gas tank use the center of working end face as central point symmetric distribution or circumference distribution, the both sides of the last groove of losing gas of working end face receive pressure earlier, the both sides of the last groove of letting out the gas of lamellar body take place deformation earlier, and deformation extends to the center of working end face gradually, thereby make the elastic deformation power on the working end face be greater than the elastic deformation power of letting out the gas inslot, and when the pressure on the working end face reduces, under the effect of elastic deformation power on the working end face, the groove of losing gas restores deformation in advance, therefore, the offset of lamellar body has been reduced, thereby reduce the deformation error of this gasket for valve.

The invention is further configured to: the cross section of the air leakage groove is arc-shaped, V-shaped or trapezoidal, and the extending direction of the air leakage groove is linear or wavy.

Through adopting above-mentioned technical scheme, can select opening size, the direction of disappointing the passageway according to operating condition needs.

The invention is further arranged that when the cross section of the air leakage groove is arranged in a V shape or a trapezoid shape, the included angle α of the air leakage groove is 60-175 degrees.

Through adopting above-mentioned technical scheme for the deformation of this valve gasket is more stable.

The invention is further configured to: the sum of the widths L of all the air leakage grooves on the working end face accounts for 15% -100% of the diameter of the sheet body.

The invention is further configured to: the outer wall of the sheet body is provided with an anti-falling body in a surrounding mode.

Through adopting above-mentioned technical scheme, the setting up of anticreep body has increased the outer wall thickness of lamellar body to improve the installation stability of this gasket for valve.

The invention also aims to provide the proportional valve which has the advantage of small fluctuation of air release rate.

The second purpose of the invention is realized by the following technical scheme:

a proportional valve, comprising:

a valve housing;

the framework is fixedly arranged in the valve shell, a coil is wound on an outer ring of the framework, and an accommodating cavity is formed in the framework;

the air nozzle is fixedly arranged on the valve shell and provided with a fluid through hole, one end of the fluid through hole extends out of the valve shell, and the other end of the fluid through hole extends into the valve shell to be communicated with the accommodating cavity;

the valve core is arranged in the accommodating cavity in a sliding mode, one end, facing the air nozzle, of the valve core is provided with a mounting groove, any one of the valve gaskets is mounted in the mounting groove, and the working end face of the valve gasket faces the air nozzle;

the elastic piece is arranged in the accommodating cavity and is positioned between the air nozzle and the valve core, one end of the elastic piece is abutted against the valve core, and the other end of the elastic piece is abutted against the valve core.

Through adopting above-mentioned technical scheme, the coil circular telegram is in order to produce magnetism, and the case orders about for valve gasket to contradict in the fluid through-hole of tuyere under the effect of magnetic force, and the size through control coil magnetic force is with the deformation volume of control valve gasket to make the opening area gradual change of fluid through-hole, thereby realize that the aperture of fluid through-hole is adjustable, and it is little that the speed of leaking gas fluctuates.

The invention is further configured to: the valve core surrounds the mounting groove opening and is provided with an anti-falling block, and the anti-falling block is abutted to the outer wall surface of the sheet body of the gasket for the valve.

Through adopting above-mentioned technical scheme, anticreep piece is contradicted with the outer wall of lamellar body in order to improve the installation stability between outer wall and the mounting groove.

The invention is further configured to: the air nozzle is fixedly provided with a step around the fluid through hole.

Through adopting above-mentioned technical scheme, the cooperation of halfpace and working end face is in order to further improve the stability of disappointing of gasket for the valve.

In conclusion, the beneficial technical effects of the invention are as follows:

1. when the working end face is provided with the air relief groove, the air relief groove penetrates through the center of the working end face, two sides of the air relief groove on the working end face are firstly pressed, two sides of the air relief groove on the sheet body are firstly deformed, and the deformation gradually extends towards the center of the working end face, so that the elastic deformation force on the working end face is larger than the elastic deformation force in the air relief groove, and when the pressure on the working end face is reduced, the air relief groove is firstly restored to deform under the action of the elastic deformation force on the working end face, therefore, the offset of the sheet body is reduced, and the deformation error of the gasket for the valve is reduced;

2. the coil is electrified to generate magnetism, the valve core drives the gasket for the valve to abut against the fluid through hole of the air nozzle under the action of the magnetic force, and the deformation amount of the gasket for the valve is controlled by controlling the magnetic force of the coil, so that the opening area of the fluid through hole is gradually changed, the opening degree of the fluid through hole is adjustable, and the air leakage rate is small in fluctuation.

Drawings

FIG. 1 is an exploded view of a proportional valve;

FIG. 2 is a schematic cross-sectional view of a proportional valve;

FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;

fig. 4 is a perspective view of a valve spacer according to a first modification;

fig. 5 is a schematic top view of a valve gasket according to a first modification;

fig. 6 is a front view schematically showing a valve gasket according to a first modification;

fig. 7 is a perspective view of a valve spacer according to a second modification;

fig. 8 is a schematic top view of a valve gasket according to a second modification;

fig. 9 is a front view schematically showing a valve spacer according to a second modification;

fig. 10 is a perspective view of a valve spacer according to a third modification;

fig. 11 is a schematic top view of a valve gasket according to a third modification;

fig. 12 is a front view schematically showing a valve spacer according to a third modification;

fig. 13 is a perspective view of a valve spacer according to a fifth modification;

fig. 14 is a schematic top view of a valve gasket according to a fifth modification;

fig. 15 is a front view schematically showing a valve gasket according to a fifth modification;

fig. 16 is a perspective view of a valve spacer according to a sixth modification;

fig. 17 is a schematic top view of a valve gasket according to a sixth modification;

fig. 18 is a front view schematically showing a valve spacer according to a sixth modification;

fig. 19 is a perspective view of a valve spacer according to a seventh modification;

fig. 20 is a schematic top view of a valve gasket according to a seventh modification;

fig. 21 is a front view schematically showing a valve gasket according to a seventh modification;

fig. 22 is a perspective view of a circular arc protrusion of a valve gasket according to an eighth modification;

fig. 23 is a schematic top view showing a circular arc-shaped projection of a valve seat gasket according to an eighth modification;

fig. 24 is a schematic front view of a circular arc projection of a valve seat gasket according to an eighth modification;

fig. 25 is a perspective view of a triangular projection of a valve spacer according to an eighth modification;

fig. 26 is a schematic top view showing a triangular projection of a valve seat insert according to an eighth modification;

fig. 27 is a schematic front view of a triangular projection of a valve seat insert according to an eighth modification;

FIG. 28 is a perspective view of a circular arc groove of a gasket for a valve according to a modification;

fig. 29 is a schematic top view of a circular arc groove of a gasket for a valve according to a modification;

FIG. 30 is a schematic front view showing a circular arc groove of a gasket for use in the ninth modification;

FIG. 31 is a perspective view of a V-shaped groove in a valve gasket according to a variation;

FIG. 32 is a schematic top view of a gasket "V" groove for a valve according to a variation;

FIG. 33 is a schematic front view of a gasket "V" groove for a valve according to a variation;

FIG. 34 is a perspective view of a trapezoidal through groove for a gasket according to a modification of the ninth embodiment;

FIG. 35 is a schematic top view of a trapezoidal through groove for a gasket according to a modification of the ninth embodiment;

FIG. 36 is a schematic front view of a trapezoidal through groove for a gasket according to a modification of the ninth embodiment;

FIG. 37 is a perspective view of a trapezoidal non-penetrating groove of a shim for a valve according to a modification;

FIG. 38 is a schematic top view of a shim trapezoidal non-penetrating groove for a valve according to a variation;

FIG. 39 is a schematic front view of a trapezoidal non-penetrating groove of a shim for a valve according to a modification;

fig. 40 is a perspective view of a valve spacer according to a tenth modification;

fig. 41 is a schematic top view of a valve spacer according to a tenth modification;

fig. 42 is a front view schematically showing a valve spacer according to a tenth modification;

fig. 43 is a perspective view of a valve gasket according to an eleventh modification;

fig. 44 is a schematic top view of a valve gasket according to an eleventh modification;

fig. 45 is a schematic front view of a valve gasket according to an eleventh modification;

fig. 46 is a perspective view of a gasket for a twelfth modification;

fig. 47 is a schematic top view of a valve gasket according to a modification example twelve;

fig. 48 is a front view schematically showing a gasket for a twelfth modification;

fig. 49 is a perspective view of two grooves of a valve gasket according to a thirteenth modification;

FIG. 50 is a schematic top view showing two grooves of a valve seat gasket according to a thirteenth modification;

fig. 51 is a schematic front view of two grooves of a gasket for a valve in a modified thirteenth embodiment;

fig. 52 is a perspective view of three grooves of a gasket for a valve in a thirteenth modification;

FIG. 53 is a schematic top view showing three grooves of a valve seat gasket according to a thirteenth modification;

fig. 54 is a schematic front view of a valve gasket according to a thirteenth modification example, showing three grooves;

fig. 55 is a perspective view of four grooves of a gasket for a valve in a modified thirteenth embodiment;

fig. 56 is a schematic top view of four grooves of a valve gasket according to a thirteenth modification;

fig. 57 is a schematic front view of four grooves of a gasket for a valve in a thirteenth modification;

FIG. 58 is a graph of parametric testing of a proportional valve in a comparative example;

FIG. 59 is a graph showing a parameter test of a proportional valve according to a first modification;

FIG. 60 is a graph showing a parameter test of a proportional valve according to a second modification;

FIG. 61 is a graph showing a parameter test of a proportional valve according to a fourth modification;

FIG. 62 is a graph showing a parameter test of a proportional valve according to a ninth modification;

fig. 63 is a parameter test graph of a proportional valve in the thirteenth modification.

In the figure, 1, a gasket for a valve; 11. a sheet body; 111. a working end face; 112. ribs; 113. a gas release groove; 114. a bevel; 12. a drop-proof body; 2. a valve housing; 3. a framework; 31. a coil; 32. an accommodating cavity; 33. a PIN needle; 4. a tuyere; 41. a fluid through-hole; 42. a landing; 5. a valve core; 51. mounting grooves; 52. an anti-drop block; 6. an elastic member; 7. a sheet is fixed.

Detailed Description

A preferred modification of the present invention will be described in detail below with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

The first implementation mode comprises the following steps:

the first modification example:

referring to fig. 1 and 2, a gasket 1 for a valve having a gas release groove and a proportional valve having the same, which are disclosed by the present invention, include a valve housing 2, a frame 3, a tuyere 4, a valve core 5, an elastic member 6, and a fixing piece 7. The proportional valve is suitable for fluids such as gas and liquid. Preferably, the proportional valve in the present modification uses a gas as a flow medium.

The valve housing 2 is arranged in a shape of Jiong, so that an installation cavity for installing the framework 3 is formed in the valve housing 2.

Referring to fig. 2 and 3, the framework 3 is fixedly mounted within the valve housing 2. The section of the framework 3 is arranged in an I shape. A coil 31 is wound around the outer ring of the bobbin 3, and the coil 31 is energized to generate magnetism. The framework 3 is provided with a containing cavity 32. Preferably, the receiving cavity 32 is cylindrically configured. Two PIN needles 33 are fixedly arranged on the framework 3, and the two PIN needles 33 are fixedly connected with the two ends of the coil 31.

The tuyere 4 is fixedly arranged in the valve housing 2. The tuyere 4 has a fluid through hole 41, and the axis of the fluid through hole 41 coincides with the axis of the accommodation chamber 32. One end of the fluid passage hole 41 extends out of the valve housing 2, and the other end of the fluid passage hole 41 extends into the valve housing 2 to communicate with the accommodation chamber 32. The valve core 5 is slidably disposed in the accommodating cavity 32. An air gap is reserved between the outer wall surface of the valve core 5 and the inner wall surface of the accommodating cavity 32.

An installation groove 51 is opened at one end of the valve core 5 facing the tuyere 4. Preferably, the mounting groove 51 is cylindrically configured, and the axis of the mounting groove 51 coincides with the axis of the fluid through hole 41.

Referring to fig. 3 and 4, the valve gasket 1 is installed in the installation groove 51. The valve gasket 1 is made of rubber or silicone rubber to have elasticity. The valve gasket 1 includes a sheet body 11 and an anti-drop body 12 provided around an outer wall surface of the sheet body 11. The sheet body 11 is arranged in the shape of a cylinder, an elliptic cylinder, a polygonal column or a water drop and other special-shaped cylinders. Preferably, the sheet body 11 is a cylinder, the anti-falling body 12 is a ring, the anti-falling body 12 is fixedly arranged on the outer circumferential surface of the sheet body 11, and the axis of the sheet body 11 coincides with the axis of the anti-falling body 12. The sheet body 11 and the retaining body 12 are integrally formed.

The two opposite end surfaces of the valve gasket 1 are a working end surface 111 and a mounting end surface, respectively. The installation end surface of the gasket 1 for a valve is inserted into the installation groove 51 to abut against the bottom surface of the installation groove 51. The mounting groove 51 and the mounting end surface can be fixed by dispensing. Preferably, a gap within a tolerance allowance range is left between the side wall of the mounting groove 51 and the outer circular surface of the valve gasket 1 to reserve a deformation space for burrs generated during the production process of the valve gasket 1. The working end surface 111 of the valve gasket 1 faces the side where the tuyere 4 is located.

Referring to fig. 5 and 6, the valve gasket 1 is provided with raised ribs 112 on its working end surface 111. The number of ribs 112 is one. The width L1 of the ribs 112 accounts for 15% -100% of the diameter of the sheet 11. Preferably, the width L1 of ribs 112 is 0.4mm to 2.5 mm. The extension line of the rib 112 passes through the center of the working end surface 111 to divide the working end surfaces 111 on both sides of the rib 112 into two halves having the same shape and area.

The rib 112 first collides with the tuyere 4 to close the fluid through hole 41, so that the elastic deformation force on the rib 112 is greater than that on the working end surface 111. When the proportional valve works, the gasket 1 for the valve moves continuously along with the valve core 5 towards the tuyere 4, and the sheet body 11 deforms symmetrically by taking the rib 112 as the center. Under the action of the elastic deformation force on the ribs 112, the working end surface 111 gradually recovers deformation in advance, so that the area of the opening of the fluid through hole 41 facing to the accommodating cavity 32, which is shielded by the valve gasket 1, is gradually changed in proportion, and the proportional adjustment of the opening of the fluid through hole 41 is realized, so that the proportional valve continuously controls the fluid.

The elastic piece 6 is arranged in the accommodating cavity 32 and is positioned between the air nozzle 4 and the valve core 5. One end of the elastic element 6 is abutted against the valve core 5, and the other end of the elastic element 6 is abutted against the valve core 5. Preferably, the elastic member 6 is a spring.

The fixing piece 7 is fixedly arranged at one end of the valve casing 2 far away from the air nozzle 4. The fixing piece 7 abuts against the frame 3 to fix the frame 3 to the valve housing 2. The fixing piece 7 is provided with an air release hole which is communicated with the accommodating cavity 32 for releasing air of the proportional valve.

It is worth mentioning that the valve gasket 1 is roughened to prevent sticking.

Fig. 59 shows the test parameters of the proportional valve according to the first modification. Wherein the curve P2 is the curve of the air pressure in the fluid through hole 41 of the proportional valve, and the curve V2 is the air release rate line of the proportional valve. Before t1, the proportional valve is in a gas-filled state; and after t2 the proportional valve is in the deflated state.

The first modification is implemented according to the following principle:

(1) closing the proportional valve: the coil 31 is electrified, the valve core 5 is mutually attracted with the air nozzle 4 due to the magnetic magnetization generated by the coil 31, and at the moment, the valve gasket 1 is abutted against the valve core 5 to be extruded and deformed, so that the fluid through hole 41 is closed;

(2) and (3) a proportional valve inflation stage: gas enters from the fluid passage hole 41 toward one end outside the valve housing 2 to be charged in the fluid passage hole 41 until the pressure in the fluid passage hole 41 reaches a preset pressure value;

(3) air leakage stage of the proportional valve: the magnetic force of the proportional valve is slowly reduced by changing the voltage, and the valve core 5 is slowly bounced off by the ribs 112 on the working end surface 111 of the valve gasket 1 along with the change of the magnetic force, so that the small bulge of the valve gasket 1 and the tuyere 4 form an air release opening.

Modification example two:

referring to fig. 7 and 8, the difference from the first modification is that two symmetrical inclined planes 114 are formed on both sides of the rib 112, and the inclined planes 114 are inclined downward in a direction away from the rib 112, so that the working end surface 111 forms a roof-like structure.

Referring to fig. 8 and 9, the inclined planes 114 have an inclination angle α 1 of 1 to 25 deg. two symmetrical inclined planes 114 are provided so that the deformation amount of the sheet body 11 is proportionally set and both ends are symmetrical.

Referring to fig. 60, voltage conditions for the test of the proportional valve according to the second modification are the same as those for the test of the proportional valve according to the first modification. Wherein the curve P3 is the curve of the air pressure in the fluid through hole 41 of the proportional valve, and the curve V3 is the air release rate line of the proportional valve. Before t1, the proportional valve is in a gas-filled state; and after t2 the proportional valve is in the deflated state.

The second modification is similar to the first modification in its principle of implementation.

Modification example three:

referring to fig. 2 and 3, the difference from the first modification is that a landing 42 is fixedly disposed at one end of the tuyere 4 extending into the accommodating cavity 32, and a retaining block 52 is disposed around an opening of the installation groove 51 of the valve core 5. The step 42 is integrally formed with the tuyere 4. The anti-drop block 52 is arranged in a circular ring shape. The axis of the anti-drop block 52 coincides with the axis of the valve core 5. The diameter of the inner ring of the retaining block 52 is the same as the diameter of the outer circular surface of the sheet body 11, so that the retaining block 52 abuts against the outer wall surface of the sheet body 11 of the valve gasket 1. But the inner ring diameter of the anti-slip block 52 is smaller than the outer circular surface diameter of the anti-slip body 12.

The anti-dropping block 52 is arranged to enable the anti-dropping body 12 and the mounting groove 51 to be fixed through clamping connection, and the valve gasket 1 can be prevented from being separated from the mounting groove 51 without dispensing.

Referring to fig. 10 and 11, the difference from the first modification is that the number of ribs 112 is two. The center line of symmetry of the two ribs 112 passes through the center of the working end face 111. The two ribs 112 are parallel to each other.

Referring to fig. 11 and 12, the two ribs 112 are parallel to each other, and the straight distance D1 between the central extension lines of the two ribs 112 accounts for 15% -100% of the diameter of the working end face 111. An air leakage channel is formed between the two ribs 112.

The third modification is implemented according to the following principle:

(3) air leakage stage of the proportional valve: the magnetic force of the proportional valve is slowly reduced by changing the voltage, the valve core 5 is slowly bounced off by the working end surface 111 of the valve gasket 1 along with the change of the magnetic force, and thus an air release opening is formed between the air release channel between the two ribs 112 of the working end surface 111 of the valve gasket 1 and the air nozzle 4.

The fourth modification example:

referring to fig. 10 and 11, the difference from the third modification is that a relief groove 113 is formed in the relief passage between the two ribs 112, and the extension line of the relief groove 113 passes through the center of the working end surface 111. The air release groove 113 is arranged in a circular arc shape or a V shape.

Referring to fig. 11 and 12, when the air-release grooves 113 are arranged in a V shape, the included angle α 2 of the air-release grooves 113 is 60 to 175 degrees, at this time, the height difference H1 between the lowest point of the air-release grooves 113 and the highest point of the ribs 112 accounts for 1.6 to 40 percent of the diameter of the sheet body 11, and preferably, the height difference H1 between the lowest point of the air-release grooves 113 and the highest point of the ribs 112 is 0.04 to 1.00 mm.

Referring to fig. 61, the voltage conditions during the test are the same as those during the test of the proportional valve according to the first modification, which is the test parameters of the proportional valve according to the fourth modification. Wherein the curve P4 is the curve of the air pressure in the fluid through hole 41 of the proportional valve, and the curve V4 is the air release rate line of the proportional valve. Before t1, the proportional valve is in a gas-filled state; and after t2 the proportional valve is in the deflated state.

The fourth modification is implemented according to the following principle:

(3) air leakage stage of the proportional valve: the magnetic force of the proportional valve is slowly reduced by changing the voltage, the valve core 5 is slowly bounced off by the working end surface 111 of the valve gasket 1 along with the change of the magnetic force, and therefore the air release grooves 113 of the working end surface 111 of the valve gasket 1 are matched with the ribs 112 to form air release openings with the air nozzles 4.

Modification example five:

referring to fig. 13 and 14, the difference from the third modification is that both the ribs 112 are provided obliquely on the working end surface 111, and the center line of symmetry of the two ribs 112 passes through the center of the working end surface 111.

Referring to fig. 14 and 18, the included angle α 3 between two ribs 112 is 0-180 °

Further, an air release groove 113 is formed in the air release channel between the two ribs 112. At this time, the height difference H2 between the lowest point of the air-leakage groove 113 and the highest point of the ribs 112 accounts for 10-40% of the diameter of the sheet body 11. Preferably, the height difference H1 between the lowest point of the air leakage groove 113 and the highest point of the ribs 112 is 0.3 mm-1.0 mm.

The principle of implementation of the fifth modification is the same as that of the fourth modification.

Modification example six:

referring to fig. 16 and 17, the difference from the third modification is that both beads 112 are provided in a wavy line shape.

Referring to fig. 17 and 18, a gas release groove 113 is formed in the gas release channel between the two ribs 112, and the gas release groove 113 has a wave shape similar to the shape of the ribs 112.

The principle of implementation of the sixth modification is the same as that of the fourth modification.

A seventh modification example:

referring to fig. 19 and 20, the difference from the third modification is that a relief groove 113 is formed in the relief channel between the two ribs 112, and the relief groove 113 is trapezoidal.

Referring to fig. 20 and 21, both ends of the trapezoidal air relief groove 113 do not penetrate the working end surface 111. At this time, the straight distance D2 between the central extension lines of the two ribs 112 accounts for 20% to 100% of the diameter of the working end face 111. Preferably, the straight distance D2 between the extending lines of the centers of the two ribs 112 is 0.5 mm-2.5 mm.

The seventh modification is similar to the fourth modification in its principle of implementation.

The eighth modification example:

referring to fig. 22 and 25, the difference from the first modification is that the number of ribs 112 is at least three. Preferably, the number of ribs 112 is three.

Referring to fig. 23 and 26, the center lines of the three ribs 112 are circumferentially distributed with the center of the working end surface 111 as the rotation center. And an air leakage channel is formed between two adjacent ribs 112. Preferably, the three ribs 112 are circumferentially spaced at equal intervals.

Referring to fig. 24 and 27, the ribs 112 are disposed in a triangular or circular arc shape.

The implementation principle of the eighth modification is as follows:

(3) air leakage stage of the proportional valve: the magnetic force of the proportional valve is slowly reduced by changing the voltage, the valve core 5 is slowly bounced off by the working end surface 111 of the valve gasket 1 along with the change of the magnetic force, so that the air release channel between two adjacent ribs 112 and the air nozzle 4 form an air release opening, and the air release openings are circumferentially distributed by taking the center of the working end surface 111 as a rotation center.

The second embodiment:

modification example nine:

Referring to fig. 28 and 31, the difference from the first modification is that a recessed relief groove 113 is provided in the working end surface 111 of the valve gasket 1. The number of the gas release grooves 113 is one. The center line of the air release groove 113 passes through the center of the working end surface 111 to divide the working end surfaces 111 at both sides of the air release groove 113 into two halves with the same shape and area. The air release grooves 113 are formed in a circular arc shape (as shown in fig. 28), a V shape (as shown in fig. 31), or a trapezoid shape (as shown in fig. 34 and 37).

Referring to fig. 29 and 30, when the air-release groove 113 is configured in a circular arc shape, the groove width L2 of the air-release groove 113 accounts for 15% -100% of the diameter of the sheet body 11, and the height difference H3 between the lowest point of the air-release groove 113 and the working end surface 111 accounts for 1.6% -48% of the diameter of the sheet body 11. Preferably, the width L2 of the air release groove 113 is 0.4 mm-2.5 mm, and the height difference H3 between the lowest point of the air release groove 113 and the working end surface 111 is 0.04 mm-1.2 mm.

Referring to fig. 32 and 33, when the air-release grooves 113 are arranged in a V shape, the groove width L3 of the air-release grooves 113 accounts for 15% to 100% of the diameter of the sheet body 11, the included angle α 4 of the air-release grooves 113 is 60 to 175 °, and the height difference H4 between the lowest point of the air-release grooves 113 and the working end surface 111 accounts for 1.6 to 48% of the diameter of the sheet body 11. preferably, the groove width L3 of the air-release grooves 113 is 0.4mm to 2.5mm, and the height difference H4 between the lowest point of the air-release grooves 113 and the working end surface 111 is 0.04mm to 1.2 mm.

Referring to fig. 35 and 36, when the air-release grooves 113 are arranged in a trapezoidal shape, the groove width L4 of the air-release grooves 113 accounts for 15% to 100% of the diameter of the sheet body 11, and the height difference H5 between the lowest point of the air-release grooves 113 and the working end surface 111 accounts for 1.6% to 48% of the diameter of the sheet body 11. Preferably, the width L4 of the air release groove 113 is 0.4 mm-2.5 mm, and the height difference H5 between the lowest point of the air release groove 113 and the working end surface 111 is 0.04 mm-1.2 mm.

It should be noted that, referring to fig. 38 and 39, when the air release groove 113 is trapezoidal, two ends of the air release groove 113 do not penetrate through the working end surface 111, and the step 42 partially interferes with the air release groove 113 to make the air release opening.

Referring to fig. 62, voltage conditions for the test of the proportional valve according to the second modification are the same as those for the test of the proportional valve according to the first modification. Wherein the curve P5 is the curve of the air pressure in the fluid through hole 41 of the proportional valve, and the curve V5 is the air release rate line of the proportional valve. Before t1, the proportional valve is in a gas-filled state; and after t2 the proportional valve is in the deflated state.

The ninth modification is implemented according to the principle that:

(3) air leakage stage of the proportional valve: the magnetic force of the proportional valve is gradually reduced by changing the voltage, the valve core 5 is gradually flicked by the working end surface 111 of the valve gasket 1 along with the change of the magnetic force, and the air release groove 113 of the working end surface 111 of the valve gasket 1 and the air nozzle 4 form an air release opening.

Modification ten:

referring to fig. 40 and 41, the difference from the ninth modification is that the width of the run-flat groove 113 is gradually reduced from one end of the central line thereof to the other end thereof.

Referring to fig. 41 and 42, the maximum width L5 of the air-leakage groove 113 accounts for 15-100% of the diameter of the sheet body 11, and the height difference H6 between the lowest point of the air-leakage groove 113 and the working end surface 111 accounts for 1.6-48% of the diameter of the sheet body 11. Optionally, the width L5 of the air release groove 113 is 0.4 mm-2.5 mm, and the height difference H6 between the lowest point of the air release groove 113 and the working end surface 111 is 0.04 mm-1.2 mm.

The principle of implementation of the tenth modification is the same as that of the ninth modification.

Modification eleven:

referring to fig. 43 and 45, the difference from the ninth modification is that the center line of the run-flat groove 113 is arranged in a wavy line shape (as shown in fig. 44).

The principle of implementation of the eleventh modification is the same as that of the ninth modification.

Modification twelve:

referring to fig. 46 and 47, the difference from the ninth modification is that the number of the air-escape grooves 113 is two. The central line symmetry of the two gas discharge grooves 113 passes through the center of the working end surface 111. The center lines of the two gas discharge grooves 113 are parallel to each other or inclined from one end to the other end along the center line symmetry line.

Referring to fig. 47 and 48, the width of the single air-bleeding groove 113 is L6, and the sum of the widths L6 of the two air-bleeding grooves 113 accounts for 15% to 100% of the diameter of the sheet 11. The width L6 of the air release groove 113 is 0.4 mm-2.5 mm.

The twelfth modification is similar to the ninth modification in its principle of implementation.

Modification thirteen:

referring to fig. 49 and 52, the difference from the ninth modification is that the number of the relief grooves 113 is at least two. The center lines of all the gas release grooves 113 are circumferentially distributed with the center of the working end surface 111 as the rotation center.

Referring to fig. 50 and 51, when the number of the gas discharge grooves 113 is two, the included angle β of the gas discharge grooves 113 is 0 ° to 180 °.

Referring to fig. 53 and 54, when the number of the air-escape grooves 113 is at least three, the included angles between the center lines of the air-escape grooves 113 are circumferentially equally or unequally spaced apart with the center of the working end surface 111 as the rotation center.

Preferably, when the number of the air release grooves 113 is three, the three air release grooves 113 are distributed in a fan shape.

Referring to fig. 55 and 57, when the number of the air release grooves 113 is four, the four air release grooves 113 are distributed in a cross shape (as shown in fig. 56).

Referring to fig. 60, the voltage conditions during the test are the same as those during the test of the proportional valve according to the modification example, and the valve for testing the gasket is shown in fig. 52. Wherein the curve P6 is the curve of the air pressure in the fluid through hole 41 of the proportional valve, and the curve V6 is the air release rate line of the proportional valve. Before t1, the proportional valve is in a gas-filled state; and after t2 the proportional valve is in the deflated state.

The third modification example has the following implementation principle:

(3) air leakage stage of the proportional valve: the magnetic force of the proportional valve is gradually reduced by changing the voltage, the valve core 5 is gradually flicked by the working end surface 111 of the valve gasket 1 along with the change of the magnetic force, and a plurality of air release openings are formed by the air release grooves 113 on the working end surface 111 of the valve gasket 1 and the air nozzle 4.

Comparative example:

referring to utility model publication No. CN204628577U, the difference from the third modification is that the working end surface 111 of the valve gasket 1 is provided with a single-side inclined surface 114114, and the center of force of the inclined surface 114114 is offset from the center line of the valve gasket 1.

Referring to fig. 58, the voltage conditions at the time of the test are the same as those at the time of the test of the proportional valve of the modification example, which are the test parameters of the proportional valve of the present comparative example. Wherein the curve P1 is the curve of the air pressure in the fluid through hole 41 of the proportional valve, and the curve V1 is the air release rate line of the proportional valve. Before t1, the proportional valve is in a gas-filled state; and after t2 the proportional valve is in the deflated state.

The implementation principle of the comparative example is as follows:

(3) air leakage stage of the proportional valve: the magnetic force of the proportional valve is gradually reduced by changing the voltage, the valve core 5 is gradually flicked by the working end surface 111 of the valve gasket 1 along with the change of the magnetic force, and one side of the working end surface 111 of the valve gasket 1 is gradually separated from the tuyere 4 to form an air leakage opening.

Comparing fig. 58 and fig. 59, it can be seen that under the same voltage conditions: before t1, the air pressure changes in the proportional valve in the comparative example and the proportional valve in the modification one are nearly the same; however, after t2, the bleed stage of the proportional valve in the comparative example and the bleed stage of the proportional valve in the modification example were such that the fluctuation of the bleed rate of the proportional valve in the comparative example was large, and the fluctuation of the bleed rate of the proportional valve in the modification example was small and nearly smooth. Therefore, the valve gasket 1 in the first modification has a smaller deformation error than the valve gasket 1 in the comparative example, and has better air leakage stability.

Comparing fig. 58 and 60, it can be seen that under the same voltage conditions: before t1, the air pressure changes in the proportional valve in the comparative example and the proportional valve in the modification two are nearly the same; however, after t2, the bleed stage of the proportional valve in the comparative example and the bleed stage of the proportional valve in the second modification had large fluctuation in the bleed rate of the proportional valve in the comparative example, and small fluctuation in the bleed rate of the proportional valve in the second modification, nearly smooth. Therefore, the valve gasket 1 in the second modification has a smaller deformation error than the valve gasket 1 in the comparative example, and has better air leakage stability.

Comparing fig. 58 and fig. 61, it can be seen that under the same voltage condition: before t1, the pressure changes in the proportional valve of the comparative example and the proportional valve of the fourth variant were nearly the same; however, after t2, the bleed stage of the proportional valve in the comparative example and the bleed stage of the proportional valve in the fourth modification showed a large fluctuation in the bleed rate of the proportional valve in the comparative example, while the fluctuation in the bleed rate of the proportional valve in the fourth modification was small and almost smooth. Therefore, the valve gasket 1 in the fourth modification has a smaller deformation error than the valve gasket 1 in the comparative example, and is more stable against air leakage.

Comparing fig. 58 and 62, it can be seen that under the same voltage conditions: before t1, the air pressure changes in the proportional valve in the comparative example and the proportional valve in the ninth modification are nearly the same; however, after t2, the bleed stage of the proportional valve in the comparative example and the bleed stage of the proportional valve in the modification nine have large fluctuations in the bleed rate of the proportional valve in the comparative example, and small fluctuations in the bleed rate of the proportional valve in the modification nine, nearly smooth. Therefore, the valve gasket 1 in the modification ninth has a smaller deformation error than the valve gasket 1 in the comparative example, and is more stable against air leakage.

Comparing fig. 58 and 63, it can be seen that under the same voltage conditions: before t1, the pressure changes of the proportional valve in the comparative example and the proportional valve in the thirteen modification are nearly the same; however, after t2, the bleed stage of the proportional valve of the comparative example and the bleed stage of the proportional valve of the thirteenth modification show a large fluctuation in the bleed rate of the proportional valve of the comparative example, and a small fluctuation in the bleed rate of the proportional valve of the thirteenth modification, which is nearly smooth. Therefore, the valve gasket 1 in modification thirteen has a smaller deformation error than the valve gasket 1 in comparative example, and is more stable against air leakage.

The modifications of the present embodiment are all preferred modifications of the present invention, and thus do not limit the scope of the present invention, and therefore: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a gasket for valve with let out gas groove, its characterized in that, includes lamellar body (11), lamellar body (11) have elasticity, working end face (111) have on lamellar body (11), be provided with concave and convex line on working end face (111), concave and convex line includes the let out gas groove (113) of at least one indent, the central line or the line of symmetry of letting out gas groove (113) coincide with the center of working end face (111).

2. The gasket for a valve having a gas release groove according to claim 1, wherein the number of the gas release grooves (113) is one, and a center line of the gas release groove (113) passes through a center of the working end surface (111).

3. The gasket for a valve having a gas release groove according to claim 1, wherein the number of the gas release grooves (113) is at least two, and the center lines of the gas release grooves (113) are symmetrically or circumferentially distributed with respect to the center of the working end surface (111).

4. The gasket for the valve with the air release groove as recited in claim 1, wherein the cross section of the air release groove (113) is circular arc shaped, V shaped or trapezoidal, and the extending direction of the air release groove (113) is linear or wavy.

5. The gasket for valve with air release groove as claimed in claim 4, wherein when the cross section of the air release groove (113) is disposed in a V-shape or a trapezoid shape, the included angle α of the air release groove (113) is 60 ° to 175 °.

6. The gasket for valve with air release groove as defined in claim 1, wherein the sum of the widths L of all air release grooves (113) on the working end surface (111) is 15-100% of the diameter of the sheet body (11).

7. The gasket for a valve having a gas release groove as set forth in claim 1, wherein the outer wall surface of the sheet body (11) is surrounded by a separation preventing body (12).

8. A proportional valve, comprising:

a valve housing (2);

the framework (3) is fixedly arranged in the valve casing (2), a coil (31) is wound on the outer ring of the framework (3), and an accommodating cavity (32) is formed in the framework (3);

the air nozzle (4) is fixedly arranged on the valve shell (2), the air nozzle (4) is provided with a fluid through hole (41), one end of the fluid through hole (41) extends out of the valve shell (2), and the other end of the fluid through hole (41) extends into the valve shell (2) to be communicated with the accommodating cavity (32);

the valve core (5) is arranged in the accommodating cavity (32) in a sliding manner, one end, facing the air nozzle (4), of the valve core (5) is provided with a mounting groove (51), the valve gasket (1) as claimed in any one of claims 1 to 7 is mounted in the mounting groove (51), and the working end surface (111) of the valve gasket (1) faces the air nozzle (4);

the elastic piece (6) is arranged in the accommodating cavity (32) and is positioned between the air nozzle (4) and the valve core (5), one end of the elastic piece (6) is abutted against the valve core (5), and the other end of the elastic piece (6) is abutted against the valve core (5).

9. The proportioning valve of claim 8 wherein said spool (5) is provided with a retaining block (52) around said mounting groove (51) opening, said retaining block (52) abutting against an outer wall surface of said blade (11) of said valve gasket (1).

10. A proportional valve according to claim 8, wherein the tuyere (4) is fixedly provided with a step (42) around the fluid passage hole (41) thereof.