CN204330078U - A kind of vibrating diaphragm and vibrating elements - Google Patents
A kind of vibrating diaphragm and vibrating elements Download PDFInfo
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- CN204330078U CN204330078U CN201520009337.9U CN201520009337U CN204330078U CN 204330078 U CN204330078 U CN 204330078U CN 201520009337 U CN201520009337 U CN 201520009337U CN 204330078 U CN204330078 U CN 204330078U
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- diaphragm
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- table top
- transition table
- tightening screw
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Abstract
The utility model provides a kind of vibrating diaphragm and vibrating elements, belongs to level transducer field, vibrating elements involving vibrations diaphragm and driver element, and the diaphragm of vibrating diaphragm welds with between tightening screw, and driver element is set on tightening screw.Welding makes diaphragm be fixedly connected with tightening screw, and fixed form is simple and convenient, and the cost of manufacture of vibrating diaphragm is reduced.
Description
Technical field
The utility model relates to level transducer field, in particular to a kind of for determine or monitor in pipeline or container thing position can the vibrating elements of piezoelectric excitation, particularly a kind of vibrating diaphragm and vibrating elements.
Background technology
The vibrating elements of level transducer has different structures, they generally include a supporting and are used for the diaphragm that can vibrate of the vibrating mass of liquid comes into contact to be measured and organize piezoelectric element more, when the probe of fluid to be measured contact vibration element, due to the damping action of liquid, its frequency is sharply declined, by testing circuit, the information that this mechanical vibration change is converted to electric signal, and pass to control circuit, realize the measurement to liquid level and control.
Existing vibrating elements complex structure, parts are more, and therefore volume is comparatively large, processing is inconvenient, and cost of manufacture is higher.
Utility model content
The utility model provides a kind of vibrating diaphragm and vibrating elements, and the problems referred to above are improved.
The utility model is achieved in that
A kind of vibrating diaphragm, comprising:
A diaphragm that can vibrate, the top of described diaphragm is provided with transition table top, and described transition table top is annular groove shape, described transition table top and described diaphragm one-body molded, the side away from described transition table top of described diaphragm is provided with two vibrating masies, and two described vibrating masies form prong shape;
Tightening screw, one end of described tightening screw is smooth section, and the other end is thread segment, and one end away from described thread segment of described smooth section is welded on described transition table top and forms weld zone, and described thread segment is arranged with nut.
Further, described smooth section and described transition table top adopt argon arc welding or Laser Welding (LBW), form argon arc welding weld zone or Laser Welding (LBW) weld zone.
Weld zone adopts argon arc welding to weld, and makes diaphragm become to be integrated with tightening screw, is set in by driver element on tightening screw and measures.
Transition table top and tightening screw adopt machining one-body molded, such as turning etc., need to use numerically-controlled machine etc. to process, and the structure of diaphragm is comparatively meticulous, complicated, be not easy clamping, to the diaphragm after shaping carry out tightening screw to add man-hour operation comparatively complicated, difficulty of processing is higher, cost increases, and makes the cost of vibrating elements higher.The arc burning of argon arc welding is stablized, and heat is concentrated, and arc column temperature is high, and welding production efficiency is high, and heat-affected zone is narrow, and the weldment stress welded, distortion, crackle are inclined to little.Weld zone also can adopt Laser Welding (LBW) to weld, and Laser Welding (LBW) can be reduced to minimum requirement by entering heat, and heat-affected zone metallographic variation range is little, and the distortion that heat transfer causes is minimum.Argon arc welding and Laser Welding (LBW) all can not make material metallographic structure and the structure change of diaphragm, relative to machining make transition table top and tightening screw one-body molded, integrated effect can be reached, difficulty of processing when can reduce one-body molded again and processing cost, reduce the cost of manufacture of vibrating elements.
Further, described smooth section is cylindric, the side away from described diaphragm of described transition table top is provided with cylindrical protrusions, the axial line of described projection overlaps with the axial line of described transition table top, the diameter of described projection and the equal diameters of described smooth section, the end face of described projection and the end face of described smooth section are fitted, and described weld zone is arranged between described smooth section and described projection.
Projection makes the welding transition cross section between tightening screw and transition table top reduce, due to the diameter of projection and the equal diameters of smooth section, make the transition of weld zone comparatively mild, evenly, the more important thing is, weld zone distance diaphragm is far away, can effectively avoid the surface of diaphragm owing to welding the material metallographic structure and structure change that cause, this metallographic structure and structure change can cause the change of the mechanical property of material, thus cause the change of vibration characteristics, the change of vibration characteristics can affect the reliability of vibrating elements, the life-span of vibrating elements is finally caused to be affected.After adding this projection, make weld zone away from diaphragm, the mechanical property of diaphragm material can not be caused to change, the reliability of diaphragm can not be affected, the life-span of whole vibrating elements can not be affected, diaphragm itself can not be hardening, remain the component that can bend the most key in whole vibrating elements, diaphragm is the cross-connecting area of transmitting force between the vibrating mass of prong shape and driver element, other component has the bendind rigidity more much higher than it, avoid bending the making of other components between vibrating mass and driver element, to lose rigidity coupling, cause whole vibrating elements to lose efficacy.
Further, the height of described annular groove is 2.5mm-3.5mm.
The number of components of driver element is less, the corresponding reduction of thickness, and the height of the annular groove that transition table top is formed is less, the size of diaphragm is reduced, is particularly suitable for miniaturization.
A kind of vibrating elements, comprising:
Above-mentioned vibrating diaphragm;
Also comprise driver element, described driver element is set on described tightening screw.
Further, described driver element is provided with hold-down ring, top electrode, upper piezoelectric element, bottom electrode, lower piezoelectric element and the support ring of fitting successively; Side away from described lower piezoelectric element and the described transition table top of described support ring are fitted, and the side away from described top electrode and the described nut of described hold-down ring are fitted; The internal diameter of described top electrode, described upper piezoelectric element, described bottom electrode and described lower piezoelectric element is all greater than the external diameter of described tightening screw; Described hold-down ring, described support ring and described top electrode are used for driving wire to be connected with second, and described bottom electrode is used for driving wire to be connected with first; The length of described smooth section is less than or equal to the thickness of described driver element.
Further, be provided with insulation course between described driver element and described tightening screw, described insulation course is ring-type and is set on described tightening screw, and the two ends of described insulation course stretch into described hold-down ring and described support ring respectively.
Further, the outside of described driver element is arranged with drive shell, the two ends of described drive shell are connected with described hold-down ring and described support ring respectively, and the external diameter of the external diameter of described top electrode, the external diameter of described upper piezoelectric element, the external diameter of described bottom electrode and described lower piezoelectric element is all less than the internal diameter of described drive shell.
Compared with prior art, the beneficial effects of the utility model are: welding makes diaphragm be fixedly connected with tightening screw, and fixed form is simple and convenient, and the cost of manufacture of vibrating diaphragm is reduced.The side away from described diaphragm of transition table top is provided with cylindrical protrusions, make weld zone away from diaphragm, can effectively avoid the surface of diaphragm owing to welding the material metallographic structure and structure change that cause, the mechanical property of diaphragm material can not be caused to change, the reliability of diaphragm can not be affected, the life-span of whole vibrating elements can not be affected, very practical.
Accompanying drawing explanation
The vibrating diaphragm front view that Fig. 1 provides for the utility model embodiment 1;
Fig. 2 is transition table top and the tightening screw annexation schematic diagram of Fig. 1;
The vibrating elements front view that Fig. 3 provides for the utility model embodiment 2;
Fig. 4 is the driver element front view of Fig. 3.
Diaphragm 101; Tightening screw 102; Transition table top 103; Vibrating mass 104; Smooth section 105; Thread segment 106; Weld zone 107; Protruding 108; Hold-down ring 109; Upper piezoelectric element 110; Bottom electrode 111; Lower piezoelectric element 112; Support ring 113; First drives wire 114; Insulation course 115; Top electrode 116; Second drives wire 117.
Embodiment
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The vibrating diaphragm front view that Fig. 1 provides for the utility model embodiment 1; Fig. 2 is transition table top and the tightening screw annexation schematic diagram of Fig. 1.As shown in Figure 1 and Figure 2, the utility model example 1 provides a kind of vibrating diaphragm, comprise diaphragm 101 and tightening screw 102, diaphragm 101 can vibrate, the top of diaphragm 101 is provided with transition table top 103, and transition table top 103 is annular groove shape, transition table top 103 and diaphragm 101 one-body molded, the side away from transition table top 103 of diaphragm 101 is provided with two vibrating masies, 104, two vibrating masies 104 and forms prong shape;
If transition table top 103 and tightening screw 102 adopt machining one-body molded, such as turning etc., need to use numerically-controlled machine etc. to process, and the structure of diaphragm 101 is comparatively meticulous, complicated, be not easy clamping, to the diaphragm 101 after shaping carry out tightening screw 102 to add man-hour operation comparatively complicated, difficulty of processing is higher, cost increases, and makes the cost of vibrating elements higher.In order to effectively solve this problem, one end of tightening screw 102 is smooth section 105, the other end is thread segment 106, one end away from thread segment 106 of smooth section 105 forms weld zone 107 with welding between transition table top 103, is preferably and adopts argon arc welding welding, certainly, also can be other welding manners such as Laser Welding (LBW), weld zone 107 adopts argon arc welding to weld, and diaphragm 101 is integrated with tightening screw 102 one-tenth, is set in by driver element on tightening screw 102 and measures; Thread segment 106 is arranged with nut.
The arc burning of argon arc welding is stablized, and heat is concentrated, and arc column temperature is high, and welding production efficiency is high, and heat-affected zone is narrow, and the weldment stress welded, distortion, crackle are inclined to little; Argon arc welding can not make the tissue change such as the material hardens of diaphragm 101, relative to machining make transition table top 103 and tightening screw 102 one-body molded, integrated effect can be reached, difficulty of processing when can reduce one-body molded again and processing cost, reduce the cost of manufacture of vibrating elements.The welding manners such as Laser Welding (LBW) also can realize the effect similar with argon arc welding.
As the preferred version of this embodiment, smooth section 105 is cylindric, the side away from diaphragm 101 of transition table top 103 is provided with cylindrical protrusions 108, the axial line of protruding 108 overlaps with the axial line of transition table top 103, the protruding diameter of 108 and the equal diameters of smooth section 105, protruding 108 make the welding transition cross section between tightening screw 102 and transition table top 103 reduce, and make the transition of weld zone 107 comparatively mild, even, further, weld zone 107 is far away apart from diaphragm 101; The protruding end face of 108 and the end face of smooth section 105 are fitted, and weld zone 107 is arranged between smooth section 105 and protruding 108.
Protruding 108 make the welding transition cross section between tightening screw 102 and transition table top 103 reduce, due to the protruding diameter of 108 and the equal diameters of smooth section, make the transition of weld zone comparatively mild, evenly, the more important thing is, weld zone distance diaphragm 101 is far away, can effectively avoid the surface of diaphragm 101 owing to welding the material metallographic structure and structure change that cause, the mechanical property of diaphragm material can not be caused to change, the reliability of diaphragm 101 can not be affected, the life-span of whole vibrating elements can not be affected, diaphragm itself can not be hardening, remain the component that can bend the most key in whole vibrating elements, diaphragm 101 is cross-connecting areas of transmitting force between the vibrating mass 104 of prong shape and driver element, other component has the bendind rigidity more much higher than it, bending the making of other components is avoided to lose rigidity coupling between vibrating mass 104 and driver element, whole vibrating elements is caused to lose efficacy.
As the preferred version of this embodiment, the height of annular groove is 2.5mm-3.5mm, is preferably 3mm.
The number of components of driver element is less, the corresponding reduction of thickness, and the height of the annular groove that transition table top 103 is formed is less, the size of diaphragm 101 is reduced, is particularly suitable for miniaturization.
Above-mentioned vibrating diaphragm can be applied on vibrating elements, and vibrating elements also arranges driver element, and this driver element can be prior art, and driver element is set on tightening screw 102.
The vibrating elements front view that Fig. 3 provides for the utility model embodiment 2; Fig. 4 is the driver element front view of Fig. 3.As shown in Figure 3, Figure 4, the utility model embodiment 2 provide a kind of can the vibrating elements of piezoelectric excitation, comprise the vibrating diaphragm that driver element and embodiment 1 provide; Driver element is set on tightening screw 102.
In the present embodiment, the concrete structure of described driver element is: driver element is provided with hold-down ring 109, top electrode 116, upper piezoelectric element 110, bottom electrode 111, lower piezoelectric element 112 and the support ring 113 of fitting successively; Side away from lower piezoelectric element 112 and the transition table top 103 of support ring 113 are fitted, and the side away from top electrode 116 and the nut of hold-down ring 109 are fitted; The internal diameter of top electrode 116, upper piezoelectric element 110, bottom electrode 111 and lower piezoelectric element 112 is all greater than the external diameter of tightening screw 102.Because the number of components of driver element is less, cost of manufacture is lower.
The element that driver element comprises is ring-type, and hold-down ring 109 bears the snap-in force of nut and is distributed on the whole surface of top electrode 116 equably, and hold-down ring 109 and support ring 113 are electrically connected with top electrode 116 simultaneously, and top electrode 116 is complementary with bottom electrode 111.Top electrode 116, upper piezoelectric element 110, bottom electrode 111 and lower piezoelectric element 112 internal diameter are all greater than the external diameter of tightening screw 102, between leave gap and carry out electrical isolation.
Hold-down ring 109, support ring 113 and top electrode 116 are for driving wire 117 to be connected with second, and bottom electrode 111 is for driving wire 114 to be connected with first; The length of smooth section 105 is less than or equal to the thickness of driver element.
First drives current potential to drive wire 114 to be transported to the inner side of upper piezoelectric element 110 and lower piezoelectric element 112 by first, and first drives wire 114 to be connected with the bottom electrode 111 be included between upper piezoelectric element 110 and lower piezoelectric element 112.
Second drives current potential to drive wire 117, top electrode 116, hold-down ring 109 and support ring 113 to be applied to the outside of upper piezoelectric element 110 and lower piezoelectric element 112 by second, hold-down ring 109 to be conducted electricity with diaphragm 101 by nut and tightening screw 102 and is connected, and this diaphragm 101 also contacts with support ring 113.
Hold-down ring 109, support ring 113 drive wire 117 and second to drive current potential to be connected with top electrode 116 by second, bottom electrode 111 drives wire 114 and first to drive current potential to be connected by first, the number of components of driver element reduces the reduction causing vibrating elements height, thus makes it better with the rigidity that is coupled on vibrating mass 104.
As the preferred version of this embodiment, be provided with insulation course 115 between driver element and tightening screw 102, insulation course 115 is ring-type and is set on tightening screw 102, and the two ends of insulation course 115 stretch into hold-down ring 109 and support ring 113 respectively.
Insulation course 115 makes the electric insulating effect between the first driving current potential and tightening screw 102 better, effectively avoids the phenomenon occurring electrical conductive communication.
As the preferred version of this embodiment, the outside of driver element is arranged with drive shell, the two ends of drive shell are connected with hold-down ring 109 and support ring 113 respectively, and the external diameter of top electrode 116, the external diameter of upper piezoelectric element 110, the external diameter of bottom electrode 111 and the external diameter of lower piezoelectric element 112 are all less than the internal diameter of drive shell.
The outside of driver element is surrounded by drive shell, the two ends of this drive shell are connected with hold-down ring 109 and support ring 113 respectively, and hold-down ring 109 and support ring 113 compress top electrode 116, upper piezoelectric element 110, bottom electrode 111 and lower piezoelectric element 112 and form a structural unit.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a vibrating diaphragm, is characterized in that, comprising:
A diaphragm that can vibrate, the top of described diaphragm is provided with transition table top, and described transition table top is annular groove shape, described transition table top and described diaphragm one-body molded, the side away from described transition table top of described diaphragm is provided with two vibrating masies, and two described vibrating masies form prong shape;
Tightening screw, one end of described tightening screw is smooth section, and the other end is thread segment, and one end away from described thread segment of described smooth section is welded on described transition table top and forms weld zone, and described thread segment is arranged with nut.
2. vibrating diaphragm according to claim 1, is characterized in that, described smooth section and described transition table top adopt argon arc welding or Laser Welding (LBW).
3. vibrating diaphragm according to claim 1, it is characterized in that, described smooth section is cylindric, the side away from described diaphragm of described transition table top is provided with cylindrical protrusions, the axial line of described projection overlaps with the axial line of described transition table top, the diameter of described projection and the equal diameters of described smooth section, the end face of described projection and the end face of described smooth section are fitted, and described weld zone is arranged between described smooth section and described projection.
4. vibrating diaphragm according to claim 1, is characterized in that, the height of described annular groove is 2.5mm-3.5mm.
5. a vibrating elements, is characterized in that, comprising:
Vibrating diaphragm described in claim 1-4 any one;
Also comprise driver element, described driver element is set on described tightening screw.
6. vibrating elements according to claim 5, is characterized in that, described driver element is provided with hold-down ring, top electrode, upper piezoelectric element, bottom electrode, lower piezoelectric element and the support ring of fitting successively; Side away from described lower piezoelectric element and the described transition table top of described support ring are fitted, and the side away from described top electrode and the described nut of described hold-down ring are fitted; The internal diameter of described top electrode, described upper piezoelectric element, described bottom electrode and described lower piezoelectric element is all greater than the external diameter of described tightening screw; Described hold-down ring, described support ring and described top electrode are used for driving wire to be connected with second, and described bottom electrode is used for driving wire to be connected with first; The length of described smooth section is less than or equal to the thickness of described driver element.
7. vibrating elements according to claim 6, it is characterized in that, be provided with insulation course between described driver element and described tightening screw, described insulation course is ring-type and is set on described tightening screw, and the two ends of described insulation course stretch into described hold-down ring and described support ring respectively.
8. vibrating elements according to claim 6, it is characterized in that, the outside of described driver element is arranged with drive shell, the two ends of described drive shell are connected with described hold-down ring and described support ring respectively, and the external diameter of the external diameter of described top electrode, the external diameter of described upper piezoelectric element, the external diameter of described bottom electrode and described lower piezoelectric element is all less than the internal diameter of described drive shell.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520009337.9U CN204330078U (en) | 2015-01-07 | 2015-01-07 | A kind of vibrating diaphragm and vibrating elements |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520009337.9U CN204330078U (en) | 2015-01-07 | 2015-01-07 | A kind of vibrating diaphragm and vibrating elements |
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| CN204330078U true CN204330078U (en) | 2015-05-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109425423A (en) * | 2017-08-28 | 2019-03-05 | Vega格里沙贝两合公司 | Vibrating sensor |
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2015
- 2015-01-07 CN CN201520009337.9U patent/CN204330078U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109425423A (en) * | 2017-08-28 | 2019-03-05 | Vega格里沙贝两合公司 | Vibrating sensor |
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