CN114226175B - Piezoelectric valve pre-tightening adjusting mechanism - Google Patents
Piezoelectric valve pre-tightening adjusting mechanism Download PDFInfo
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- CN114226175B CN114226175B CN202210154829.1A CN202210154829A CN114226175B CN 114226175 B CN114226175 B CN 114226175B CN 202210154829 A CN202210154829 A CN 202210154829A CN 114226175 B CN114226175 B CN 114226175B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a pre-tightening adjusting mechanism of a piezoelectric valve, which comprises: the valve body is internally provided with a primary adjusting cavity, an adjusting channel and a secondary adjusting cavity, and the secondary adjusting cavity and the adjusting channel are communicated with the primary adjusting cavity; the piezoelectric adjusting component is arranged in the secondary adjusting cavity, and the lower end of the piezoelectric adjusting component is used for adjusting the position of a firing pin on the piezoelectric valve; the lever adjusting mechanism is arranged in the primary adjusting cavity and is positioned above the piezoelectric adjusting component, one end of the lever adjusting mechanism is abutted against the upper end of the piezoelectric adjusting component, and the two ends of the lever adjusting mechanism can move so as to adjust the position of the piezoelectric adjusting component in the vertical direction; and the adjusting component is arranged in the adjusting channel and is abutted against the other end of the lever adjusting mechanism so as to adjust the movable positions of the two ends of the lever adjusting mechanism. The invention has simple and rapid adjustment mode and high adjustment precision.
Description
Technical Field
The invention belongs to the technical field of piezoelectric valves, and particularly relates to a piezoelectric valve pre-tightening adjusting mechanism.
Background
Before the piezoelectric valve dispensing operation, the pretightening force between the firing pin and the nozzle needs to be adjusted, so that the firing pin and the nozzle are attached to each other to achieve certain sealing, better impact force can be provided, and the gluing effect is guaranteed. At the present stage, the pretightening force between the nozzle and the firing pin is adjusted by adjusting the mode of the threaded sleeve or the overall position of the flow passage, the mode of adjusting the threaded sleeve has the defects that the threaded sleeve and the nozzle cannot return to a glue beating state in a short time after being cleaned, glue beating can be carried out only through a second adjusting process, and the glue beating effect is different before and after adjustment; the mode of adjusting the position of the whole runner has the problems of complex structure, high processing and assembling difficulty, high cost and the like. Patent CN112206935A discloses a fluid trace injection apparatus, discloses the scheme that adopts oblique kicking block, spacing kicking block and accuse position subassembly to adjust the actuator, adopts inclined plane complex mode, and the structure is comparatively complicated, and the regulation degree of difficulty is great, and the accommodation process is convenient inadequately.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, the invention provides a piezoelectric valve pre-tightening adjusting mechanism which has the advantage of quickly, simply and conveniently adjusting the pre-tightening force between a nozzle and a firing pin.
According to the embodiment of the invention, the piezoelectric valve pre-tightening adjusting mechanism comprises: the valve body is internally provided with a primary adjusting cavity, an adjusting channel and a secondary adjusting cavity, and the secondary adjusting cavity and the adjusting channel are communicated with the primary adjusting cavity; the piezoelectric adjusting assembly is arranged in the secondary adjusting cavity, and the lower end of the piezoelectric adjusting assembly is used for adjusting the position of a firing pin on the piezoelectric valve; the lever adjusting mechanism is arranged in the primary adjusting cavity and is positioned above the piezoelectric adjusting component, one end of the lever adjusting mechanism is abutted against the upper end of the piezoelectric adjusting component, and the two ends of the lever adjusting mechanism can move so as to adjust the position of the piezoelectric adjusting component in the vertical direction; and the adjusting assembly is arranged in the adjusting channel and is abutted against the other end of the lever adjusting mechanism so as to adjust the movable positions of the two ends of the lever adjusting mechanism.
The piezoelectric valve has the beneficial effects that the piezoelectric valve is simple in structure, one end of the lever adjusting mechanism is abutted against the piezoelectric adjusting assembly through the arrangement of the lever adjusting mechanism and the adjusting assembly, the other end of the lever adjusting mechanism is connected with the adjusting assembly, the position of the lever adjusting mechanism is adjusted through the adjusting assembly, the position of the piezoelectric adjusting assembly in the vertical direction can be adjusted, the pre-tightening force between the firing pin and the nozzle on the piezoelectric valve is further adjusted, the adjusting mode is simple and rapid, and the adjusting precision is high.
According to an embodiment of the invention, the adjusting assembly comprises an adjusting rod, the adjusting rod is rotatably arranged in the adjusting channel, one end of the adjusting rod is connected with the lever adjusting mechanism, and when the adjusting rod rotates, the adjusting assembly can move in the up-and-down direction to adjust the positions of two ends of the lever adjusting mechanism.
According to one embodiment of the invention, a salient point is arranged in the primary adjusting cavity, the salient point is positioned below the middle part of the lever adjusting mechanism, and the salient point can be abutted against the lever adjusting mechanism when the lever adjusting mechanism moves downwards so as to limit the lever adjusting mechanism.
According to an embodiment of the invention, an annular groove is formed in the outer peripheral surface of the adjusting rod, the adjusting assembly further comprises a limiting block, the limiting block is arranged in the adjusting channel, a U-shaped groove is formed in the limiting block, and the U-shaped groove is matched with the annular groove so that the limiting block is clamped on the annular groove.
According to one embodiment of the invention, the adjusting rod is connected with the adjusting channel through a thread, the lower end of the adjusting rod is provided with a rotatable spherical contact which is abutted against the lever adjusting mechanism, and when the adjusting rod rotates, the adjusting rod can move upwards or downwards, and the position of the lever adjusting mechanism is adjusted through the spherical contact, so that the position of the piezoelectric adjusting component in the vertical direction is adjusted.
According to an embodiment of the invention, the adjusting assembly further comprises an adjusting screw, the adjusting screw is connected with the adjusting channel through a thread, one end of the adjusting screw is connected with the adjusting rod, the other end of the adjusting screw abuts against the lever adjusting mechanism, the adjusting rod is driven to rotate when rotating, the adjusting screw can move upwards or downwards while rotating, so as to adjust the position of the lever adjusting mechanism, and further adjust the position of the piezoelectric adjusting assembly in the vertical direction.
According to one embodiment of the present invention, the adjusting rod has a square groove at a lower end thereof, and an upper portion of the adjusting screw is formed as a square protrusion that can be inserted into the square groove, and a depth of the square protrusion inserted into the square groove is greater than a maximum stroke of the adjusting screw in a height direction.
According to one embodiment of the present invention, the lever adjustment mechanism includes: the lever rotating shaft is connected with the valve body and is positioned on the upper surface of the primary adjusting cavity; the piezoelectric adjusting device comprises an adjusting lever, a piezoelectric adjusting component and a piezoelectric adjusting component, wherein one end of the upper surface of the adjusting lever is connected with a lever rotating shaft, the other end of the upper surface of the adjusting lever abuts against the adjusting component, a protruding strip is arranged on the lower surface of the adjusting lever and abuts against the upper end of the piezoelectric adjusting component, and when the adjusting component adjusts the position of the adjusting lever, the position of the piezoelectric adjusting component in the vertical direction is adjusted through the position change of the protruding strip in the vertical direction; and the return spring is positioned below the adjusting component, one end of the return spring is abutted against the lower surface of the adjusting lever, and the other end of the return spring is abutted against the lower surface of the primary adjusting cavity.
According to an embodiment of the invention, a V-shaped protrusion is formed on the lever rotating shaft, a V-shaped groove is formed on the adjusting lever, the V-shaped protrusion is located in the V-shaped groove, a vertex of the V-shaped protrusion abuts against a lowest point of the bottom of the V-shaped groove, and when the adjusting lever moves, the V-shaped groove moves relative to the V-shaped protrusion.
According to one embodiment of the invention, the lever adjusting mechanism further comprises a limiting jackscrew, the limiting jackscrew is arranged inside the return spring, a gap is formed between the limiting jackscrew and the lower surface of the adjusting lever, and the gap is adjustable.
According to one embodiment of the invention, the piezoelectric adjusting assembly comprises an adjusting block, an upper ejector block and a piezoelectric actuator which are sequentially arranged from top to bottom, the adjusting block is positioned below the adjusting lever, the upper surface of the adjusting block abuts against the protruding strip, and when the protruding strip moves in the vertical direction, the position of the piezoelectric actuator in the vertical direction is adjusted through the adjusting block and the upper ejector block, so that the pretightening force between the nozzle and the firing pin on the piezoelectric valve is adjusted.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of a piezoelectric valve pretension adjustment mechanism according to the present invention;
FIG. 2 is a schematic structural diagram of a valve body in a piezoelectric valve pretension adjustment mechanism according to the present invention;
FIG. 3 is a schematic diagram of an adjusting rod of a piezoelectric valve pretension adjusting mechanism according to the present invention;
FIG. 4 is a schematic structural diagram of a limiting block in the pre-tightening adjusting mechanism of the piezoelectric valve according to the present invention;
FIG. 5 is a schematic diagram of an adjusting screw of the piezoelectric valve pretension adjusting mechanism according to the present invention;
FIG. 6 is a schematic diagram of the structure of an adjusting lever in a pre-tension adjusting mechanism of a piezoelectric valve according to the present invention;
FIG. 7 is a schematic structural view of a lever shaft in a pretension adjusting mechanism of a piezoelectric valve according to the present invention;
FIG. 8 is a schematic diagram of a second construction of a piezo valve pretension adjustment mechanism according to the present invention;
FIG. 9 is a schematic diagram of a third construction of a piezo valve pretension adjustment mechanism according to the present invention;
reference numerals:
the adjusting device comprises an adjusting rod 101, a limiting block 102, an adjusting screw 103, an adjusting lever 104, a return spring 105, a limiting jackscrew 106, a lever rotating shaft 107, an adjusting block 108, an upper jacking block 109, a piezoelectric actuator 110, a valve body 111, a salient point 112, a primary adjusting cavity 113, an adjusting channel 114, a secondary adjusting cavity 115, an annular groove 1011, a square groove 1012, a U-shaped groove 1021, a square protrusion 1031, a protrusion strip 1041, a V-shaped groove 1042 and a V-shaped protrusion 1071.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention. Furthermore, 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 otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The piezoelectric valve pretension adjustment mechanism of the embodiment of the present invention is specifically described below with reference to the drawings.
Example 1
As shown in fig. 1 to 7, a piezoelectric valve pretension adjustment mechanism according to an embodiment of the present invention includes: the piezoelectric actuator comprises a valve body 111, a piezoelectric adjusting component, a lever adjusting mechanism and an adjusting component, wherein a primary adjusting cavity 113, an adjusting channel 114 and a secondary adjusting cavity 115 are arranged in the valve body 111, and the secondary adjusting cavity 115 and the adjusting channel 114 are communicated with the primary adjusting cavity 113; the piezoelectric adjusting component is arranged in the secondary adjusting cavity 115, and the lower end of the piezoelectric adjusting component is used for adjusting the position of a firing pin on the piezoelectric valve; the lever adjusting mechanism is arranged in the primary adjusting cavity 113, the lever adjusting mechanism is positioned above the piezoelectric adjusting component, one end of the lever adjusting mechanism is abutted against the upper end of the piezoelectric adjusting component, and the two ends of the lever adjusting mechanism can move so as to adjust the position of the piezoelectric adjusting component in the vertical direction; the adjusting component is arranged in the adjusting channel 114 and is propped against the other end of the lever adjusting mechanism so as to adjust the movable positions of the two ends of the lever adjusting mechanism. That is, the piezoelectric adjusting assembly is used to adjust the relative position of the striker and nozzle on the piezoelectric valve, and the position of the piezoelectric adjusting assembly within the valve body 111 can be adjusted by the cooperation of the adjusting assembly and the lever adjusting mechanism.
According to an embodiment of the present invention, the adjusting assembly includes an adjusting rod 101, the adjusting rod 101 is rotatably disposed in the adjusting channel 114, one end of the adjusting rod 101 is connected to the lever adjusting mechanism, and when the adjusting rod 101 rotates, the adjusting assembly is movable in the up-and-down direction to adjust the positions of the two ends of the lever adjusting mechanism.
Further, the adjusting assembly further comprises an adjusting screw 103, the adjusting screw 103 is connected with the adjusting channel 114 through threads, one end of the adjusting screw 103 is connected with the adjusting rod 101, the other end of the adjusting screw 103 abuts against the lever adjusting mechanism, the adjusting rod 101 is driven to rotate, the adjusting screw 103 can move upwards or downwards while rotating, the position of the lever adjusting mechanism is adjusted, and then the position of the piezoelectric adjusting assembly in the vertical direction is adjusted.
That is to say, adjusting rod 101 drives adjusting screw 103 to rotate when rotating, because adjusting screw 103 and regulation passageway 114 threaded connection, adjusting screw 103 can move up or down in the direction of height when rotating, and then promote lever adjustment mechanism and carry out the position fine setting, and adjusting rod 101 pivoted path length is greater than adjusting screw 103 displacement in upper and lower direction, becomes the micro-adjustment of upper and lower direction into longer circumferential direction rotary displacement, can be more accurate when adjusting like this.
As shown in fig. 3 and 5, the adjusting lever 101 has a square groove 1012 at a lower end thereof, and the adjusting screw 103 has an upper portion formed as a square projection 1031 insertable into the square groove 1012, the square projection 1031 being inserted into the square groove 1012 to a depth greater than a maximum stroke of the adjusting screw 103 in the up-down direction. The square groove 1012 and the square protrusion 1031 are matched, so that the adjusting screw 103 and the adjusting rod 101 can be kept to rotate coaxially in the circumferential direction, meanwhile, the adjusting screw 103 can move relative to the adjusting rod 101 in the vertical direction, and the maximum stroke of the vertical movement of the adjusting screw 103 is kept smaller than the depth of the square protrusion 1031 inserted into the square groove 1012, so that the adjusting screw 103 can be prevented from being separated from the adjusting rod 101.
As shown in fig. 3 and 4, an annular groove 1011 is formed on the outer circumferential surface of the adjusting rod 101, the adjusting assembly further includes a limiting block 102, the limiting block 102 is disposed in the adjusting channel 114, a U-shaped groove 1021 is formed on the limiting block 102, and the U-shaped groove 1021 is matched with the annular groove 1011, so that the limiting block 102 is clamped on the annular groove 1011. That is, the stopper 102 serves to limit the movement distance of the adjusting lever 101 in the height direction, and the width of the U-shaped groove 1021 needs to fall between the inner and outer circumferential diameters of the cross section of the annular groove 1011.
According to one embodiment of the present invention, a lever adjustment mechanism includes: the valve comprises a lever rotating shaft 107, an adjusting lever 104 and a return spring 105, wherein the lever rotating shaft 107 is connected with a valve body 111, and the lever rotating shaft 107 is positioned on the upper surface of a primary adjusting cavity 113; one end of the upper surface of the adjusting lever 104 is connected with the lever rotating shaft 107, the other end of the upper surface of the adjusting lever 104 abuts against the adjusting component, the lower surface of the adjusting lever 104 is provided with a protruding strip 1041, the protruding strip 1041 abuts against the upper end of the piezoelectric adjusting component, and when the adjusting component adjusts the position of the adjusting lever 104, the position of the piezoelectric adjusting component in the vertical direction is adjusted through the position change of the protruding strip 1041 in the vertical direction; the return spring 105 is positioned below the adjusting component, one end of the return spring 105 is abutted against the lower surface of the adjusting lever 104, and the other end of the return spring 105 is abutted against the lower surface of the primary adjusting cavity 113.
That is, when the adjusting lever 104 is finely adjusted, the center of rotation is the point where the adjusting lever 104 contacts the lever rotating shaft 107, the lower end of the adjusting screw 103 abuts against the adjusting lever 104, the adjusting screw 103 pushes the adjusting lever 104 to move downwards, and the return spring 105 hinders the adjusting lever 104 from moving downwards, so as to provide acting force for the adjusting lever 104 to return upwards.
Further, a V-shaped protrusion 1071 is formed on the lever rotating shaft 107, a V-shaped groove 1042 is formed on the adjusting lever 104, the V-shaped protrusion 1071 is located in the V-shaped groove 1042, a vertex of the V-shaped protrusion 1071 abuts against a lowest point of a bottom of the V-shaped groove 1042, and when the adjusting lever 104 moves, the V-shaped groove 1042 moves relative to the V-shaped protrusion 1071. Different from the conventional shaft connection mode, the precision is poor when the shaft hole is matched and rotated with a gap, and the matching relation between the V-shaped groove 1042 and the V-shaped bulge 1071 can ensure that the adjusting lever 104 rotates around a point contacting with the lever rotating shaft 107 when moving, so that the precision is higher.
According to an embodiment of the present invention, the lever adjusting mechanism further includes a limit top thread 106, the limit top thread 106 is disposed inside the return spring 105, and a gap is formed between the limit top thread 106 and the lower surface of the adjusting lever 104, and the gap is adjustable. The limiting jackscrew 106 can limit the downward moving distance of the adjusting lever 104, and the over-adjustment is avoided.
According to an embodiment of the present invention, the piezoelectric adjustment assembly includes an adjustment block 108, an upper pushing block 109, and a piezoelectric actuator 110, which are sequentially arranged from top to bottom, the adjustment block 108 is located below the adjustment lever 104, an upper surface of the adjustment block 108 abuts against the protruding strip 1041, when the protruding strip 1041 moves in the up-down direction, a position of the piezoelectric actuator 110 in the up-down direction is adjusted through the adjustment block 108 and the upper pushing block 109, so as to adjust a pretightening force between the nozzle and the firing pin on the piezoelectric valve. In other words, the upper top block 109 and the adjusting block 108 are located above the piezoelectric actuator 110, the adjusting lever 104 is controlled by the adjusting assembly to perform fine adjustment around the lever rotating shaft 107, so that the protruding strips 1041 perform fine adjustment in the up-down direction, and then the position of the adjusting block 108 is adjusted, and finally the pretension between the nozzle and the firing pin on the piezoelectric valve is adjusted by the piezoelectric actuator 110.
Example 2
As shown in fig. 8, which is a schematic diagram of a second structure of a pre-tightening adjustment mechanism of a piezoelectric valve according to an embodiment of the present invention, in embodiment 2, compared with embodiment 1, an adjusting rod 101 is connected to an adjustment channel 114 through a thread, a rotatable spherical contact is provided at a lower end of the adjusting rod 101, the spherical contact abuts against a lever adjustment mechanism, when the adjusting rod 101 rotates, the adjusting rod can move up or down, and the position of the lever adjustment mechanism is adjusted through the spherical contact, so as to adjust the position of a piezoelectric adjustment assembly in the up-down direction. That is, example 2 differs from example 1 in that: the limiting jackscrew 106 and the adjusting screw 103 are not arranged, the outer periphery of the lower part of the adjusting rod 101 is connected with the adjusting channel 114 through threads, and the lower end of the adjusting rod 101 is provided with a rotatable spherical contact, so that when the adjusting rod 101 rotates, the whole adjusting rod 101 can move in the height direction, and the spherical contact presses the adjusting lever 104 to adjust in the up-down direction. The spherical contact has smaller friction force during rotation and is smoother during adjustment compared to the plane contact, and of course, the spherical contact can be arranged at the lower end of the adjusting screw 103 in embodiment 1, besides being directly arranged at the lower end of the adjusting rod 101.
Example 3
As shown in fig. 9, a third structural diagram of a pretension adjusting mechanism of a piezoelectric valve according to an embodiment of the present invention is shown, and embodiment 3 is different from embodiment 2 in that: the limiting block 102 is not arranged, the salient point 112 is arranged in the primary adjusting cavity 113 of the valve body 111, the salient point 112 is located below the middle of the adjusting lever 104, the salient point 112 can abut against the adjusting lever 104 when the adjusting lever 104 moves downwards to limit the adjusting lever 104, so that the adjusting lever 104 can be limited by the salient point 112 when moving downwards for a certain distance, and meanwhile, the adjusting rod 101 cannot be screwed downwards continuously due to the existence of the salient point 112.
The piezoelectric valve is simple in structure, one end of the lever adjusting mechanism is abutted against the piezoelectric adjusting assembly through the arrangement of the lever adjusting mechanism and the adjusting assembly, the other end of the lever adjusting mechanism is connected with the adjusting assembly, the position of the lever adjusting mechanism is adjusted through the adjusting assembly, the position of the piezoelectric adjusting assembly in the vertical direction can be adjusted, the pre-tightening force between the firing pin and the nozzle on the piezoelectric valve is further adjusted, the adjusting mode is simple and rapid, and the adjusting precision is high.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A piezoelectric valve pretension adjustment mechanism, comprising:
the valve comprises a valve body (111), wherein a primary adjusting cavity (113), an adjusting channel (114) and a secondary adjusting cavity (115) are arranged in the valve body (111), and the secondary adjusting cavity (115) and the adjusting channel (114) are communicated with the primary adjusting cavity (113);
the piezoelectric adjusting assembly is arranged in the secondary adjusting cavity (115), and the lower end of the piezoelectric adjusting assembly is used for adjusting the position of a firing pin on the piezoelectric valve;
the lever adjusting mechanism is arranged in the primary adjusting cavity (113), the lever adjusting mechanism is positioned above the piezoelectric adjusting component, one end of the lever adjusting mechanism is abutted against the upper end of the piezoelectric adjusting component, and the two ends of the lever adjusting mechanism can move so as to adjust the position of the piezoelectric adjusting component in the vertical direction;
the adjusting assembly is arranged in the adjusting channel (114) and is abutted against the other end of the lever adjusting mechanism so as to adjust the movable positions of the two ends of the lever adjusting mechanism;
the lever adjustment mechanism includes:
the lever rotating shaft (107), the lever rotating shaft (107) is connected with the valve body (111), and the lever rotating shaft (107) is positioned on the upper surface of the primary adjusting cavity (113);
the piezoelectric adjusting device comprises an adjusting lever (104), one end of the upper surface of the adjusting lever (104) is connected with a lever rotating shaft (107), the other end of the upper surface of the adjusting lever (104) abuts against the adjusting component, a protruding strip (1041) is arranged on the lower surface of the adjusting lever (104), the protruding strip (1041) abuts against the upper end of the piezoelectric adjusting component, and when the adjusting component adjusts the position of the adjusting lever (104), the position of the piezoelectric adjusting component in the vertical direction is adjusted through the position change of the protruding strip (1041) in the vertical direction;
the return spring (105), the return spring (105) is located the below of adjusting part, the one end of return spring (105) with adjust the lower surface counterbalance of lever (104), the other end of return spring (105) with one-level regulation chamber (113) lower surface counterbalance.
2. The pre-tightening adjusting mechanism of a piezoelectric valve as claimed in claim 1, wherein the adjusting assembly comprises an adjusting rod (101), the adjusting rod (101) is rotatably disposed in the adjusting channel (114), one end of the adjusting rod (101) is connected to the lever adjusting mechanism, and when the adjusting rod (101) rotates, the adjusting assembly is movable in the up-down direction to adjust the positions of the two ends of the lever adjusting mechanism.
3. A piezoelectric valve pretension adjustment mechanism according to claim 2, wherein a protruding point (112) is provided in the primary adjustment chamber (113), the protruding point (112) is located below the middle part of the lever adjustment mechanism, and the protruding point (112) can abut against the lever adjustment mechanism when the lever adjustment mechanism moves downwards to limit the lever adjustment mechanism.
4. The pre-tightening adjusting mechanism for the piezoelectric valve according to claim 2, wherein an annular groove (1011) is formed in an outer peripheral surface of the adjusting rod (101), the adjusting assembly further includes a limiting block (102), the limiting block (102) is disposed in the adjusting channel (114), a U-shaped groove (1021) is formed in the limiting block (102), and the U-shaped groove (1021) is matched with the annular groove (1011), so that the limiting block (102) is clamped in the annular groove (1011).
5. The piezoelectric valve pretension adjusting mechanism according to claim 4, wherein the adjusting rod (101) is connected with the adjusting channel (114) through a thread, a rotatable spherical contact is arranged at the lower end of the adjusting rod (101), the spherical contact abuts against the lever adjusting mechanism, and when the adjusting rod (101) rotates, the adjusting rod can move upwards or downwards, and the position of the lever adjusting mechanism is adjusted through the spherical contact, so that the position of the piezoelectric adjusting component in the up-and-down direction is adjusted.
6. The pre-tightening adjusting mechanism of the piezoelectric valve according to claim 4, characterized in that the adjusting assembly further comprises an adjusting screw (103), the adjusting screw (103) is connected with the adjusting channel (114) through a thread, one end of the adjusting screw (103) is connected with the adjusting rod (101), the other end of the adjusting screw (103) abuts against the lever adjusting mechanism, when the adjusting rod (101) rotates, the adjusting screw (103) is driven to rotate, and the adjusting screw (103) can move upwards or downwards while rotating to adjust the position of the lever adjusting mechanism, so that the position of the piezoelectric adjusting assembly in the vertical direction is adjusted.
7. The pretension adjusting mechanism for the piezoelectric valve according to claim 6, wherein the lower end of the adjusting rod (101) is provided with a square groove (1012), the upper part of the adjusting screw (103) is formed into a square protrusion (1031) which can be inserted into the square groove (1012), and the depth of the square protrusion (1031) inserted into the square groove (1012) is larger than the maximum stroke of the adjusting screw (103) in the height direction.
8. A pre-tightening adjusting mechanism for a piezoelectric valve according to claim 1, wherein a V-shaped protrusion (1071) is formed on the lever rotating shaft (107), a V-shaped groove (1042) is formed on the adjusting lever (104), the V-shaped protrusion (1071) is located in the V-shaped groove (1042), the vertex of the V-shaped protrusion (1071) abuts against the lowest point of the bottom of the V-shaped groove (1042), and when the adjusting lever (104) moves, the V-shaped groove (1042) moves relative to the V-shaped protrusion (1071).
9. The pre-tightening adjusting mechanism of a piezoelectric valve as claimed in claim 1, wherein the lever adjusting mechanism further comprises a limit jackscrew (106), the limit jackscrew (106) is arranged inside the return spring (105), and a gap is formed between the limit jackscrew (106) and the lower surface of the adjusting lever (104), and the gap is adjustable.
10. The piezoelectric valve pretension adjusting mechanism according to claim 1, wherein the piezoelectric adjusting assembly comprises an adjusting block (108), an upper jacking block (109) and a piezoelectric actuator (110) which are sequentially arranged from top to bottom, the adjusting block (108) is located below the adjusting lever (104), the upper surface of the adjusting block (108) abuts against the protruding strip (1041), and when the protruding strip (1041) moves in the up-down direction, the position of the piezoelectric actuator (110) in the up-down direction is adjusted through the adjusting block (108) and the upper jacking block (109), so that the pretension force between an upper nozzle and a firing pin of the piezoelectric valve is adjusted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210154829.1A CN114226175B (en) | 2022-02-21 | 2022-02-21 | Piezoelectric valve pre-tightening adjusting mechanism |
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| CN202210154829.1A CN114226175B (en) | 2022-02-21 | 2022-02-21 | Piezoelectric valve pre-tightening adjusting mechanism |
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| CN114226175A CN114226175A (en) | 2022-03-25 |
| CN114226175B true CN114226175B (en) | 2022-05-17 |
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| CN114226175A (en) | 2022-03-25 |
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