CN114089052A - A portable charged droplet beam charge-to-mass ratio measurement device and method - Google Patents
A portable charged droplet beam charge-to-mass ratio measurement device and method Download PDFInfo
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- CN114089052A CN114089052A CN202111255413.0A CN202111255413A CN114089052A CN 114089052 A CN114089052 A CN 114089052A CN 202111255413 A CN202111255413 A CN 202111255413A CN 114089052 A CN114089052 A CN 114089052A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
本发明公开了一种便携式荷电液滴束荷质比测量装置及方法，涉及电荷测量领域，包括外壳、静电屏蔽笼、底座、金属网和上盖；所述静电屏蔽笼置于外壳内，外壳的上端设置有上盖，所述上盖上开设有圆通孔，底座置于外壳的下盖上，且底座可沿下盖水平滑动，所述底座上设置有金属块，所述金属片通过导线与皮安表连接，所述皮安表与电脑连接；所述金属块用来支撑金属网；金属网的正下方设置有烧杯。可对荷电液滴束的精确测量，同时，金属网和集液槽都可方便的移动或者拆除更换，实现了方便测量，提高了工作效率。
The invention discloses a portable charge-to-mass ratio measurement device and method of a charged droplet beam, which relates to the field of charge measurement and includes a casing, an electrostatic shielding cage, a base, a metal mesh and an upper cover; The upper end of the casing is provided with an upper cover, the upper cover is provided with a circular through hole, the base is placed on the lower cover of the casing, and the base can slide horizontally along the lower cover, the base is provided with a metal block, and the metal sheet passes through The wire is connected with the picoammeter, and the picoammeter is connected with the computer; the metal block is used to support the metal mesh; a beaker is arranged directly under the metal mesh. It can accurately measure the charged droplet beam. At the same time, the metal mesh and the liquid collecting tank can be easily moved or removed and replaced, which realizes convenient measurement and improves work efficiency.
Description
Technical Field
The invention relates to the technical field of charge measurement, in particular to a portable charged liquid droplet beam charge-to-mass ratio measuring device and method.
Background
The electrostatic spraying technology is widely applied in the plant protection process, and a spray head and a system of electrostatic spraying have a large number of research results. Compared with a common spraying system, the charged spraying system can improve the uniformity of fog drops, can improve 2-3 times of fog drop deposition amount and reduce environmental pollution.
In order to obtain the charge-to-mass ratio of the liquid droplet, a more accurate and suitable charge-to-mass ratio detection device is required. Application No. 201210457633.6, entitled "Charge spray Charge-to-Mass ratio measuring device", adopts a measuring method of a Faraday barrel, but the device is only suitable for laboratory measurement due to inconvenient movement; the application number is 20130359398.3, the name is 'an easily assembled and disassembled charged fog drop charge-to-mass ratio real-time measuring device', the easily assembled and disassembled charge-to-mass ratio measuring aspect is adopted, a Faraday barrel can rotate and is suitable for outdoor detection, but the Faraday barrel cannot accurately measure a small amount of drop bundles; the application number is 201520116256.9, the name is "portable charged spray charge-to-mass ratio automatic measuring instrument", its charged spray charge-to-mass ratio measurement process is automatic, but because its collecting tank and metal conductive screen cloth can't dismantle, in order to realize that metal conductive screen cloth and collecting tank are dry, can prolong the interval of measuring.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the portable charged liquid droplet beam charge-to-mass ratio measuring device, which can accurately measure the charged liquid droplet beam, and meanwhile, the metal net and the liquid collecting tank can be conveniently moved or detached and replaced, thereby realizing convenient measurement and improving the working efficiency.
The present invention achieves the above-described object by the following technical means.
A portable charged liquid drop beam charge-to-mass ratio measuring device comprises a shell, an electrostatic shielding cage, a base, a metal net and an upper cover; the electrostatic shielding cage is arranged in the shell, an upper cover is arranged at the upper end of the shell, a round through hole is formed in the upper cover, the base is arranged on a lower cover of the shell and can horizontally slide along the lower cover, a metal block is arranged on the base, the metal sheet is connected with the skin safety meter through a wire, and the skin safety meter is connected with a computer; the metal block is used for supporting a metal net; a beaker is arranged right below the metal net.
Furthermore, both ends of the metal net are supported by the metal blocks, and the metal net is provided with a plurality of layers.
Furthermore, the metal blocks are provided with a plurality of layers from top to bottom, the metal blocks are symmetrically arranged left and right, and the metal net is horizontally arranged; two ends of the metal net are respectively arranged on the metal blocks at two sides.
Further, the vertical side of the housing is made of acrylic plates.
Further, the electrostatic shielding cage is of a hollow cylindrical structure.
Furthermore, the upper cover and the lower cover of the shell are both made of metal.
Furthermore, a notch is formed in the shell, a baffle is arranged at the notch, and the notch can be opened or closed by lifting or descending the baffle.
Furthermore, the shell and the electrostatic shielding cage are fixedly supported through a fixing pin.
The measuring method of the portable charged liquid drop beam charge-to-mass ratio measuring device comprises the following steps that charged liquid drops enter an electrostatic shielding cage from a round through hole on an upper cover and fall on a metal net; the metal sheet is connected with a skin ampere meter through a lead, the current transmitted from the metal net is measured in real time, the mass of the liquid drop is measured by an electronic balance, and the charge-to-mass ratio is obtained:
Q/m＝It/m
wherein, Q-charge, C; i-intensity of discharge current, A; t-measurement time, s; m-mass of droplet bundle, kg.
The beneficial effect of this application:
1. the device can disassemble the metal net, and the metal nets with different meshes are adopted according to different conditions; meanwhile, the number of layers of the metal mesh can also be set.
2. The base in the device is movable, and the shell is provided with the notch, so that the beaker is convenient to replace, and the influence on measurement errors caused by liquid drops in the beaker is reduced.
3. The charged liquid droplet beam can be measured, and the distance between the generated fog droplets and the metal net is short, so that a usable instrument is provided for experimenters.
4. The invention has small volume and convenient carrying, and can measure the charge-to-mass ratio of the liquid drop bundle in various occasions.
5. According to the invention, the metal net has a plurality of layers, the plurality of layers of metal nets are supported by the metal blocks or each layer of metal net is supported by the metal blocks, and the purpose of arranging the plurality of layers of metal nets is to enable the charged liquid droplet beams to fall on the metal nets as far as possible according to the actual requirement, so that the measurement precision is improved.
6. The purpose of setting up the electrostatic shielding cage is in order to shield to external electric charge, ensures that the measurement result is accurate.
7. Set up the fixed pin, be in the same place electrostatic screen cage and shell are fixed for prevent that electrostatic screen cage from rocking.
Drawings
Fig. 1 is a schematic diagram of the general structure of a portable charged droplet beam charge-to-mass ratio measuring device;
FIG. 2 is a schematic cross-sectional view of a portable charged droplet beam charge-to-mass ratio measuring device;
FIG. 3 is a schematic cross-sectional view of a portable charged droplet beam charge-to-mass ratio measuring device;
FIG. 4 is a schematic structural view of a multilayer metal sheet;
fig. 5 is a schematic structural view of the beaker on a movable base.
Reference numerals:
1-a housing; 2-an electrostatic shielding cage; 3-a base; 4-beaker; 5-a metal mesh; 6-a metal sheet; 7-a baffle plate; 8-upper cover; 9-a fixed pin; 10-a wire; 11-a computer; 12-Pian ammeter; 13-electronic balance.
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 drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; 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 by those skilled in the art according to specific situations.
A portable charged liquid drop beam charge-to-mass ratio measuring device comprises a shell 1, an electrostatic shielding cage 2, a base 3, a metal net 5 and an upper cover 8; the electrostatic shielding cage 2 is arranged in the shell 1, an upper cover 8 is arranged at the upper end of the shell 1, a round through hole is formed in the upper cover 8, the base 3 is arranged on a lower cover of the shell 1, the base 3 can horizontally slide along the lower cover, a metal block 6 is arranged on the base 3, the metal sheet 6 is connected with a pico-meter 12 through a lead 10, and the pico-meter 12 is connected with a computer 11; the metal block 6 is used for supporting the metal net 5; a beaker 4 is arranged right below the metal mesh 5.
Wherein, both ends of the metal net 5 are supported by the metal blocks 6, and the metal net 5 has a plurality of layers; or the metal block 6 is provided with a plurality of layers from top to bottom, the metal block 6 is arranged symmetrically left and right, and the metal net 5 is arranged horizontally; two ends of the metal net 5 are respectively arranged on the metal blocks 6 at two sides. The purpose of arranging a plurality of layers on the metal net is to enable the charged liquid drop beams to fall on the metal net as far as possible, and the measurement accuracy is improved.
Wherein, the vertical side of the shell 3 is made of an acrylic plate, thereby being convenient for observing the condition of liquid drops in the electrostatic metal cage.
The electrostatic shielding cage 2 is a hollow cylindrical structure, and is convenient to mount in a shell or dismount from the shell.
The upper cover 8 and the lower cover of the housing 1 are made of metal, so as to better shield external charges.
The shell 1 is provided with a notch, the notch is provided with a baffle 7, and the notch can be opened or closed by lifting or descending the baffle 7, so that the beaker can be conveniently placed or taken out.
Through fixed pin 9 fixed stay between shell 1 and the electrostatic shielding cage 2, place and take place relative displacement between shell 1 and the electrostatic shielding cage 2, improve the stability of device.
The measuring method of the portable charged liquid drop bundle charge-to-mass ratio measuring device comprises the following steps that charged liquid drops enter an electrostatic shielding cage 2 from a round through hole on an upper cover 8 and fall on a metal mesh 5; the metal sheet 6 is connected with a picoammeter 12 through a lead 10, the current transmitted from the metal net 6 is measured in real time, the mass of the liquid drop is measured by an electronic balance 10, and the charge-to-mass ratio is obtained:
Q/m＝It/m
wherein, Q-charge, C; i-intensity of discharge current, A; t-measurement time, s; m-mass of droplet bundle, kg.
With reference to fig. 1 to 5, a portable charged liquid droplet beam charge-to-mass ratio measuring device includes a housing 1, an electrostatic shielding cage 2, a base 3, a beaker 4, a metal mesh 5, a metal sheet 6, a baffle 7, an upper cover 8, a fixing pin 9, a wire 10, a computer 11, a pico-meter 12, and an electronic balance 13, and the front-back direction of the portable charged liquid droplet beam charge-to-mass ratio measuring device is defined by the front-back direction of a user when the user uses the portable charged liquid droplet beam charge-to-mass ratio measuring device.
In order to conveniently observe the condition in the electrostatic metal cage, the vertical side surface of the shell 1 is made of a transparent acrylic plate, the lower cover of the shell 1 is made of metal, the bottom of the lower cover is provided with a sliding chute, a notch in the front surface of the vertical surface of the shell 1 and clamping grooves are formed in the left side and the right side of the vertical surface of the shell 1, and the sliding chute on the lower cover is in clearance fit with a sliding block at the bottom of the base 3, so that the base 3 can horizontally slide along the sliding chute, and the base 3 can be conveniently moved out of the shell 1; the notch is provided with a baffle 7, the notch can be opened or closed by lifting or descending the baffle 7, and the fixing pins 9 can be inserted into the clamping grooves on the left side and the right side so as to fix the electrostatic shielding cage 2. The upper cover 8 is fixed in the groove at the top of the shell 1 in a clearance fit manner.
The base 5 comprises an upper metal mesh fixing groove and a groove at the bottom end. The metal mesh fixing grooves above the base 5 are used for supporting the plurality of metal meshes 5 and are fixed in a clearance fit manner; a beaker 4 is arranged in a groove at the bottom end of the base 5, and the groove is in clearance fit with the outer side wall of the beaker 4.
The apparatus is described in terms of a specific charged droplet beam charge-to-mass ratio measurement procedure. The beaker 4 is placed on an electronic balance 13 to be peeled, the electrostatic shielding cage 2 and the upper cover 8 with holes are pulled upwards, and the fixing pins 9 are inserted into the clamping grooves at the two sides of the transparent shell 1 to fix the electrostatic shielding cage 7. Upwards stimulate baffle 7, pull out movable base 3 along the spout of base 3 bottom, fix beaker 4 after peeling in movable base 3's bottom recess, fix metal mesh 5 in the metal mesh fixed slot simultaneously to movable base 3 pushes the assigned position, removes fixed pin 9, puts down electrostatic shielding cage 2 and foraminiferous upper cover 8. After the charged liquid is sprayed into the device, the Pian meter 12 transmits the data to the computer 11 to record the data, and the beaker 4 is taken out and placed in the electronic balance 13 to be weighed. The charge-to-mass ratio is obtained by excel table.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (9)
1. A portable charged liquid droplet beam charge-to-mass ratio measuring device is characterized by comprising a shell (1), an electrostatic shielding cage (2), a base (3), a metal net (5) and an upper cover (8); the electrostatic shielding cage (2) is arranged in the shell (1), an upper cover (8) is arranged at the upper end of the shell (1), a round through hole is formed in the upper cover (8), the base (3) is arranged on a lower cover of the shell (1), the base (3) can horizontally slide along the lower cover, a metal block (6) is arranged on the base (3), the metal sheet (6) is connected with a safety watch (12) through a lead (10), and the safety watch (12) is connected with a computer (11); the metal block (6) is used for supporting a metal net (5); a beaker (4) is arranged right below the metal mesh (5).
2. The portable charged liquid droplet beam charge-to-mass ratio measuring device according to claim 1, wherein both ends of the metal mesh (5) are supported by metal blocks (6), and the metal mesh (5) has several layers.
3. The portable charged liquid droplet beam charge-to-mass ratio measuring device according to claim 1, wherein the metal block (6) has a plurality of layers from top to bottom, the metal block (6) is arranged symmetrically left and right, and the metal mesh (5) is arranged horizontally; two ends of the metal net (5) are respectively arranged on the metal blocks (6) on two sides.
4. The portable charged liquid droplet beam charge-to-mass ratio measuring device according to claim 1, wherein the vertical side of the housing (3) is made of an acrylic plate.
5. The portable charged liquid droplet beam charge-to-mass ratio measuring device according to claim 1, wherein the electrostatic shielding cage (2) is a hollow cylindrical structure.
6. The portable charged liquid droplet beam charge-to-mass ratio measuring device according to claim 1, wherein the upper cover (8) and the lower cover of the housing (1) are both made of metal.
7. The portable charged liquid droplet beam charge-to-mass ratio measuring device according to claim 1, wherein the housing (1) is provided with a notch, and a baffle (7) is arranged at the notch, and the notch can be opened or closed by lifting or descending the baffle (7).
8. The portable charged liquid droplet beam charge-to-mass ratio measuring device according to claim 1, wherein the housing (1) and the electrostatic shielding cage (2) are fixedly supported by a fixing pin (9).
9. The measurement method of the portable charged liquid droplet beam charge-to-mass ratio measurement device according to any one of claims 1 to 8, characterized in that charged liquid droplets enter the electrostatic shielding cage (2) from a circular through hole on the upper cover (8) and fall on the metal mesh (5); the metal sheet (6) is connected with a skin ampere meter (12) through a lead (10), the current transmitted from the metal net (6) is measured in real time, the mass of the liquid drop is measured by an electronic balance (10), and the charge-to-mass ratio is obtained:
Q/m＝It/m
wherein, Q-charge, C; i-intensity of discharge current, A; t-measurement time, s; m-mass of droplet bundle, kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111255413.0A CN114089052A (en) | 2021-10-27 | 2021-10-27 | A portable charged droplet beam charge-to-mass ratio measurement device and method |
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| CN202111255413.0A CN114089052A (en) | 2021-10-27 | 2021-10-27 | A portable charged droplet beam charge-to-mass ratio measurement device and method |
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| CN114089052A true CN114089052A (en) | 2022-02-25 |
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