CN214041052U - Vibrating diaphragm assembly for oscillation balance and oscillation balance - Google Patents
Vibrating diaphragm assembly for oscillation balance and oscillation balance Download PDFInfo
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- CN214041052U CN214041052U CN202023096905.3U CN202023096905U CN214041052U CN 214041052 U CN214041052 U CN 214041052U CN 202023096905 U CN202023096905 U CN 202023096905U CN 214041052 U CN214041052 U CN 214041052U
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Abstract
The utility model discloses a vibrating diaphragm subassembly and vibration balance for vibration balance, vibrating diaphragm subassembly include filter membrane and vibrating diaphragm seat, and the vibrating diaphragm seat has first port, second port and link up the cavity of first port and second port, and first port is used for being connected with the oscillating rod of vibration balance, and the second port coats and is stamped the filter membrane. The particles are enriched on the filter membrane, and the weight of the enriched particles can be measured in a mode of oscillating the balance, so that the concentration of the particles is calculated. In the application, the diaphragm seat plays a role in fixing the filter membrane and also plays a role in guiding gas; the vibrating diaphragm assembly as a whole can be conveniently fixed on the oscillating rod, and installation is convenient.
Description
Technical Field
The utility model relates to an atmospheric particulates mass concentration measurement field especially relates to a vibrating diaphragm subassembly and vibration balance for vibration balance.
Background
In recent years, the problem of environmental pollution is more and more emphasized by governments and the public, and air pollution is one of the environmental pollution and directly harms the physical health of people. Currently, there are many monitoring means for atmospheric or fixed pollution source particles, such as a device based on a light scattering method, which can monitor in real time, but has poor traceability of its magnitude; the beta-ray method is also slow to popularize due to the cost and the like; the filter membrane weighing method is a traditional smoke concentration measuring technology and is generally used for calibrating other measuring methods, but the method needs manual operation of monitoring personnel and is time-consuming and labor-consuming. The micro-oscillation balance method (TEOM method) is a filter membrane weighing method, and has the advantages of high measurement precision and convenient use. The vibrating diaphragm used in the micro-oscillation balance has great difficulty in design and processing technology, so that the use and popularization of the vibrating diaphragm in China are limited.
The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.
Disclosure of Invention
To the problem pointed out in the background art, the utility model provides a vibrating diaphragm subassembly and vibration balance for vibration balance.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:
the utility model provides a vibrating diaphragm component for an oscillating balance, which comprises a filtering diaphragm and a vibrating diaphragm seat;
the diaphragm seat is provided with a first port, a second port and a cavity penetrating through the first port and the second port, the first port is used for being connected with an oscillating rod of the oscillating balance, and the second port is covered with the filter membrane.
In some embodiments of this application, the second port is the horn mouth form, be equipped with a plurality of bulges on the second port, the bulge orientation filter membrane side protrusion and with the filter membrane butt, it is adjacent form air flow gap between the bulge, air flow gap with the cavity intercommunication.
In some embodiments of the present application, the diaphragm assembly further includes a net support, the net support is provided with a plurality of vent holes, the net support is disposed on the second port and abuts against the protruding portion, and the filter membrane is disposed on the net support.
In some embodiments of the present application, a flange portion is disposed on an outer periphery of the second port along a circumferential direction of the second port, a limiting gap is formed between the flange portion and the second port, and a periphery of the filter membrane and a periphery of the net support are disposed in the limiting gap.
In some embodiments of the present application, the bottom of the limiting gap is on the same plane as the top of the protrusion.
In some embodiments of the present application, the mesh support is made of a metal sheet or a metal mesh.
In some embodiments of the present application, the first port is detachably inserted into the oscillating rod, and an insertion contact surface of the first port and the oscillating rod is tapered.
In some embodiments of the present disclosure, the material of the filter membrane is quartz, or glass fiber, or an organic filter membrane.
In some embodiments of the present application, the diaphragm seat is made of metal or plastic.
The utility model also provides a vibration balance, including the vibrating rod, still include as above vibration balance is with vibrating diaphragm subassembly, the vibrating diaphragm seat is located on the vibrating rod.
Compared with the prior art, the utility model discloses an advantage is with positive effect:
when the vibrating diaphragm component for the oscillating balance is used, gas flows through the filter membrane, the second cavity in the vibrating diaphragm seat and the first cavity in the oscillating rod in sequence. The particles are enriched on the filter membrane, and the weight of the enriched particles can be measured in a mode of oscillating the balance, so that the concentration of the particles is calculated.
The vibrating diaphragm component is light in overall weight and very suitable for measuring the concentration of particulate matters by an oscillating balance method; the diaphragm seat plays a role in fixing the filter membrane and also plays a role in guiding gas, thereby being beneficial to gas circulation; the vibrating diaphragm assembly as a whole can be conveniently fixed on the oscillating rod, and installation is convenient.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a partial structural sectional view of an oscillating balance according to an embodiment;
FIG. 2 is a cross-sectional view of a diaphragm assembly according to an embodiment;
fig. 3 is a schematic view of a processing process of a diaphragm assembly according to an embodiment.
Reference numerals:
10-a diaphragm assembly;
20-oscillating bar, 21-first cavity;
100-a filter membrane;
200-diaphragm seat, 210-first port, 220-second port, 221-flanging part, 222-bulge, 223-limit gap, 224-airflow gap, 230-second cavity;
300-mesh support.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Example one
The diaphragm assembly 10 in this embodiment is applied to an oscillation balance, and the oscillation balance is used for direct reading of the particle concentration oscillation balance on occasions of fixing pollution sources, ambient air, unorganized emission and the like.
Referring to fig. 1 and 2, the oscillating balance includes an oscillating bar 20, the oscillating bar 20 is a hollow cylindrical structure, and a first cavity 21 is formed inside the oscillating bar 20.
The diaphragm assembly 10 includes a filter membrane 100 and a diaphragm seat 200.
The filter membrane 100 is used for enriching particulate matters and accumulating weight, and the enrichment weight of the filter membrane is read out in real time by a method of oscillating a balance, so that the concentration of the particulate matters can be converted.
The diaphragm holder 200 has a first port 210, a second port 220, and a cavity (denoted as a second cavity 230) penetrating the first port 210 and the second port 220, the first port 210 is used for connecting with the oscillating bar 20 of the oscillating balance, and the second port 220 is covered with the filter membrane 100.
The oscillating balance is activated and gas flows through the filter membrane 100, the second cavity 230 and the first cavity 21 in sequence. The particles are enriched on the filter membrane 100, and the weight of the enriched particles can be measured in a mode of oscillating the balance, so that the concentration of the particles is calculated.
The vibrating diaphragm component 10 in the embodiment has light overall weight, and is very suitable for measuring the concentration of particulate matters by using an oscillating balance method; the diaphragm seat 200 plays a role in fixing the filter membrane 100 and also plays a role in guiding gas, thereby being beneficial to gas circulation; the diaphragm assembly 10 as a whole may be conveniently secured to the oscillating rod 20 for ease of installation.
In some embodiments, the filter membrane 100 is made of quartz, glass fiber, or organic filter membrane, and the filter membrane 100 can be cut into a suitable size as required.
In some embodiments of the present application, the diaphragm seat 200 is made of metal or plastic, and when a metal sheet is adopted for processing, the metal sheet can be a light metal sheet such as aluminum foil, titanium foil, stainless steel, etc., and is light in weight; the die is manufactured by adopting a stamping processing technology, is convenient to process, is suitable for automatic and batch production, and is beneficial to reducing the production cost.
In some embodiments, the second port 220 is flared to collect and guide the gas flowing through the filter membrane 100, thereby facilitating the gas flow.
The second port 220 is provided with a plurality of protrusions 222, the protrusions 222 protrude toward the filter membrane 100 and abut against the filter membrane 100, an air flow gap 224 is formed between adjacent protrusions 222, and the air flow gap 224 is communicated with the second cavity 230. The protrusions 222 support the filter membrane 100, and the air flow gaps 224 formed between adjacent protrusions 222 facilitate air flow and reduce air flow resistance.
The height and density of the protruding portion 222 are moderate, which not only can ensure a certain supporting area, but also can ensure the circulation of the air flow.
The present embodiment does not limit the specific shape of the protruding portion 222, and the protruding portion 222 may be a circular protruding structure, a step structure, a rib structure, or the like.
In some embodiments, the bottom of the gas flow gap 224 is at the same level as the top of the protrusion 222, which makes the filter membrane 100 more flat when placed thereon.
In some embodiments of the present application, the diaphragm assembly 10 further includes a mesh holder 300, and a plurality of vent holes are formed on the mesh holder 300. The net holder 300 is disposed on the second port 220 and abuts against the protrusion 222, and the filter membrane 100 is placed on the net holder 300.
The net holder 300 further enhances the supporting function of the filter membrane 100, and prevents the filter membrane 100 from being broken due to excessive resistance of the air flow.
In some embodiments of the present application, the net support 300 is made of a metal sheet or a metal net, and the net support 300 may be a light net such as an aluminum net, a titanium net, or a stainless steel net, which is light in weight.
In some embodiments of the present application, the second port 220 is provided with a flanging part 221 along the circumferential direction, a limiting gap 223 is formed between the flanging part 221 and the second port 220, and the periphery of the filter membrane 100 and the periphery of the net support 300 are arranged in the limiting gap 223.
The filter membrane 100 and the net support 300 are hooped by the flanging part 221, the whole is firm, the filter membrane 100 and the net support 300 cannot fall off in vibration, and the structural reliability is improved.
In some embodiments of the present application, the first port 210 is detachably connected to the oscillating rod 20, so as to facilitate the assembly and disassembly of the diaphragm assembly 10. The plug contact surface of the first port 210 and the oscillating rod 20 is conical, so that the plug sealing performance between the first port and the oscillating rod is improved, and the plug reliability is improved.
The first port 210 can be inserted into the outer periphery or the inner periphery of the oscillating rod 20, so that the insertion is facilitated, and the lower pipe wall of the first port 210 is tapered, so that the insertion reliability and the sealing performance between the first port 210 and the oscillating rod 20 are ensured.
The processing method of the diaphragm assembly disclosed in the embodiment is as follows:
blanking: referring to fig. 3 (a), according to the size of the diaphragm seat 200, the material for processing the diaphragm seat 200 is punched from the master batch to form a flat circular metal sheet;
punching: referring to fig. 3 (b), a first port 210 is punched on the circular metal sheet, and a portion of the circular metal sheet except for the first port 210 is defined as a second port 220;
and (3) bulging: referring to fig. 3 (c), a plurality of projections 222 are punched out of the second port 220, the projections 222 being punched in a direction opposite to that of the first port 210;
flanging: referring to fig. 3 (d), the outer circumference of the second port 220 is flanged to form a flange part 221, the flange part 221 extending in a vertical direction;
placing a net support: referring to fig. 3 (e), the net holder 300 is placed on the second port 220, and the net holder 300 abuts against the convex portion 222;
placing a filter membrane: placing the filter membrane 100 on the mesh holder 300;
edge folding: referring to fig. 3 (f), the cuff part 221 is inwardly folded to prepare for the next flattening;
flattening: referring to fig. 3 (g), the turned-over part 221 is pressed inward to fix the net holder 300 and the filter membrane 100.
It should be noted that, in actual processing, the same technical effect can be achieved by first raising the drum and then flanging, or first raising the drum and then flanging, and this embodiment is not particularly limited.
When the diaphragm assembly 10 in this embodiment is processed, the diaphragm seat 200 is manufactured by a stamping process, which is convenient for processing, suitable for automatic and batch production, and beneficial to reducing the production cost.
Example two
The embodiment discloses an oscillating balance, which comprises the diaphragm assembly disclosed in the first embodiment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A vibrating diaphragm subassembly for vibration balance includes the filter membrane, its characterized in that still includes:
the diaphragm seat is provided with a first port, a second port and a cavity penetrating through the first port and the second port, the first port is used for being connected with an oscillating rod of the oscillating balance, and the second port is covered with the filter membrane.
2. The diaphragm assembly for an oscillating balance according to claim 1, wherein,
the second port is the horn mouth form, be equipped with a plurality of bulges on the second port, the bulge orientation filter membrane side protrusion and with the filter membrane butt, it is adjacent form air flow gap between the bulge, air flow gap with the cavity intercommunication.
3. The diaphragm assembly for an oscillating balance according to claim 2, wherein,
the diaphragm component further comprises a net support, a plurality of vent holes are formed in the net support, the net support is arranged on the second port and is abutted to the protruding portion, and the filter membrane is placed on the net support.
4. The diaphragm assembly for an oscillating balance according to claim 3, wherein,
the periphery of the second port is provided with a flanging part along the circumferential direction, a limiting gap is formed between the flanging part and the second port, and the periphery of the filter membrane and the periphery of the net support are arranged in the limiting gap.
5. The diaphragm assembly for an oscillating balance according to claim 4, wherein,
the bottom of the limiting gap and the top of the protruding part are located on the same plane.
6. The diaphragm assembly for an oscillating balance according to claim 3, wherein,
the net support is made of a metal sheet or a metal net.
7. The diaphragm assembly for an oscillating balance according to claim 1, wherein,
the first port and the oscillating rod are detachably connected in an inserted mode, and the inserting contact surface of the first port and the oscillating rod is conical.
8. The diaphragm assembly for an oscillating balance according to any one of claims 1 to 7, wherein,
the filter membrane is made of quartz, glass fiber or an organic filter membrane.
9. The diaphragm assembly for an oscillating balance according to any one of claims 1 to 7, wherein,
the diaphragm seat is made of metal or plastic materials.
10. A balance comprising an oscillating rod, characterized by further comprising a diaphragm assembly for a balance according to any one of claims 1 to 9, the diaphragm holder being provided on the oscillating rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023096905.3U CN214041052U (en) | 2020-12-21 | 2020-12-21 | Vibrating diaphragm assembly for oscillation balance and oscillation balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023096905.3U CN214041052U (en) | 2020-12-21 | 2020-12-21 | Vibrating diaphragm assembly for oscillation balance and oscillation balance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214041052U true CN214041052U (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023096905.3U Active CN214041052U (en) | 2020-12-21 | 2020-12-21 | Vibrating diaphragm assembly for oscillation balance and oscillation balance |
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| Country | Link |
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| CN (1) | CN214041052U (en) |
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- 2020-12-21 CN CN202023096905.3U patent/CN214041052U/en active Active
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