CN111998931B - Analytical balance - Google Patents
Analytical balance Download PDFInfo
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- CN111998931B CN111998931B CN202010914442.2A CN202010914442A CN111998931B CN 111998931 B CN111998931 B CN 111998931B CN 202010914442 A CN202010914442 A CN 202010914442A CN 111998931 B CN111998931 B CN 111998931B
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- weighing
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- analytical balance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/48—Temperature-compensating arrangements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
Abstract
The invention discloses an analytical balance, which belongs to the technical field of weighing equipment and comprises a shell, a weighing chamber, a weighing disc, a weighing sensor, a PCB (printed circuit board), a memory and a display, wherein the shell is arranged on the shell; the shell consists of a display compartment, a weighing compartment and a storage compartment, the weighing sensor is arranged in the weighing compartment, the memory is arranged in the storage compartment, and the weighing tray is arranged above the shell and connected with the weighing sensor; the weighing chamber comprises a supporting cover, a top plate, a back plate, side plates and a front baffle plate; the supporting cover comprises a hollow-structure square-shaped top frame and a supporting rod; the PCB board is arranged in the top frame. This analytical balance cuts apart the whole space of traditional balance shell, sets up the component of different heat conductivities in the space of difference, and the rethread bracing piece communicates respectively for weigh the room temperature and can reach the balance at preheating the in-process when analytical balance uses, avoided weighing the indoor air temperature maldistribution and arouse that the air flows and cause and weigh unsafe problem.
Description
Technical Field
The invention belongs to the technical field of weighing equipment, and particularly relates to an analytical balance.
Background
The electronic balance is a balance weighing device that weighs a load by using an electromagnetic force, and can be classified according to the difference in measurement accuracy, and most commonly used is an analytical balance (electronic analytical balance). How to further increase the accuracy of analytical balances has been an important direction of research by researchers. The weighing error of the current analytical balance can reach +/-0.0002 g, and the error requirement of conventional quantitative analysis can be met. Since the weighing precision is high, the vibration of the operating platform, the flow of surrounding air, dust in the air and the like all influence the weighing precision. In order to avoid the problem, the glass cover is arranged around the weighing unit of the high-precision analytical balance at present, the glass cover can block the air flow around the weighing unit, dust in the air is prevented from falling on the weighing unit, and errors caused by air flow and dust falling are reduced. However, such analytical balances are only able to avoid the influence of the inflow of outside air on the weighing, but not the influence of the air in the glass envelope on the weighing. Because the device of balance pan lower part dispels the heat in a large number in analytical balance's the glass cover for the temperature distributes unequally in the glass cover, and then can arouse the flow of the interior air of glass cover, just can cause the inaccuracy of weighing result this moment.
To remedy this problem, analytical balances are currently available which heat the space in the glass envelope. Through set up heating unit on glass cover upper portion, heat glass cover upper portion space for the even circulation of air that avoids arousing of temperature in the glass cover. However, the addition of new elements also means that the risk of damage and maintenance is increased, for example, the heating unit has the problem that an analytical balance cannot be used for weighing in the damage repairing process.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical problems to be solved by the invention are as follows: the problem of inaccurate weighing caused by internal air flow in the weighing process of the precision analytical balance is solved.
In order to solve the technical problems, the invention adopts the technical scheme that: the analytical balance comprises a shell, a weighing chamber, a weighing disc, a weighing sensor, a PCB (printed circuit board), a memory and a display; the weighing chamber is arranged above the shell;
the shell is in a right-angle trapezoid table shape with a hollow interior, and consists of a display compartment, a weighing compartment and a storage compartment, wherein the display compartment is arranged close to the inclined plane of the shell, the weighing compartment is arranged above the storage compartment, and the weighing compartment and the storage compartment are both positioned behind the display compartment;
the display is arranged at the display compartment, the weighing sensor is arranged in the weighing compartment, the memory is arranged in the storage compartment, and the weighing pan is arranged above the shell and connected with the weighing sensor;
the weighing chamber comprises a supporting cover, a top plate, a back plate, two side plates and a front baffle plate; the supporting cover comprises a square-shaped top frame, four corners of the lower surface of the top frame are respectively provided with a supporting rod, and the top frame and the supporting rods are both of hollow structures;
the center of the square-shaped top frame forms a rectangular inner frame, the top plate is fixedly arranged at the inner frame, the back plate and the front baffle plate are respectively and fixedly arranged between the two support rods positioned at the front end of the shell and the two support rods positioned at the rear end of the shell, and the side plate is arranged between the back plate and the front baffle plate and can reciprocate along the width direction of the weighing chamber;
the PCB is arranged in a hollow structure in the top frame, one ends of the two support rods positioned at the front end of the shell are communicated with the top frame, the other ends of the two support rods are communicated with the weighing compartment, one ends of the two support rods positioned at the rear end of the shell are communicated with the top frame, the other ends of the two support rods are communicated with the storage compartment, and an opening is formed in the middle of one side of each support rod facing the weighing compartment.
The invention has the beneficial effects that: the analytical balance provided by the invention divides the whole space below the traditional glass cover, the weighing sensors are respectively arranged in the weighing compartments, the memory is arranged in the storage compartment, the display is arranged at the display compartment, the space above the traditional glass cover is changed, the hollow top frame in a shape like a Chinese character 'hui' is arranged, the PCB is arranged in the hollow top frame, elements with different heat dissipation capacities are respectively arranged in different spaces and are respectively communicated through the supporting rod, the different elements heat the upper part and the lower part of the weighing chamber of the analytical balance through the heat dissipated by the elements, and the heat is dissipated to the middle part of the weighing chamber from the opening of the supporting rod, so that the temperature in the weighing chamber can be balanced in the preheating process when the analytical balance is used, and the problem of inaccurate weighing caused by air flow due to uneven air temperature distribution in the weighing chamber is avoided.
Drawings
FIG. 1 shows a schematic sectional view of an analytical balance according to the present invention;
FIG. 2 shows a schematic structural view of an analytical balance according to the present invention;
FIG. 3 shows a schematic structural view of an analytical balance according to the present invention;
FIG. 4 shows a schematic structural view of an analytical balance according to the present invention;
description of reference numerals: 1. a housing; 11. a display compartment; 12. a weighing compartment; 13. a storage compartment;
2. a weighing chamber; 21. a support housing; 211. a top frame, 212, support rods; 22. a top plate; 23. a back plate; 24. a side plate; 25. a front baffle;
3. a pan is weighed; 4. a weighing sensor;
5. a PCB board; 51. a first electrically conductive line; 52. a second electrically conductive line;
6. a memory; 61. a third electrically conductive line;
7. a display; 8. a circular groove;
9. drying the column; 91. drying the cavity; 92. a conduit; 93. and (4) a valve.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The most key concept of the invention is as follows: the distribution utilization of the space of the traditional analytical balance is broken through, the space of the upper part and the lower part of the analytical balance is fully utilized, the space arranged by each element is divided and divided again on the premise of not increasing the transverse space, and the heat dissipation of the element is utilized to heat the whole weighing chamber.
Referring to fig. 1 to 4, an analytical balance according to the present invention includes a housing 1, a weighing chamber 2, a pan 3, a load cell 4, a PCB board 5, a memory 6, and a display 7; the weighing chamber 2 is arranged above the shell 1, and a closed space is formed on the weighing chamber 2;
the shell 1 is in a right-angle trapezoid table shape with a hollow interior, the shell 1 is composed of a display compartment 11, a weighing compartment 12 and a storage compartment 13, the display compartment 11 is arranged close to the inclined plane of the shell 1, the weighing compartment 12 is arranged above the storage compartment 13, and the weighing compartment 12 and the storage compartment 13 are both positioned behind the display compartment 11;
the display 7 is arranged at the display compartment 11, the weighing sensor 4 is arranged in the weighing compartment 12, the memory 6 is arranged in the storage compartment 13, and the weighing pan 3 is arranged above the shell 1 and connected with the weighing sensor 4;
the weighing chamber 2 comprises a support cover 21, a top plate 22, a back plate 23, two side plates 24 and a front baffle plate 25; the supporting cover 21 comprises a square-shaped top frame 211, a supporting rod 212 is respectively arranged at four corners of the lower surface of the top frame 211, and the top frame 211 and the supporting rod 212 are both of a hollow structure;
a rectangular inner frame is formed in the center of the square-shaped top frame 211, the top plate 22 is fixedly arranged at the inner frame, the back plate 23 and the front baffle plate 25 are respectively and fixedly arranged between the two support rods 212 at the front end of the shell 1 and the two support rods 212 at the rear end of the shell 1, and the side plate 24 is arranged between the back plate 23 and the front baffle plate 25 and can reciprocate along the width direction of the weighing chamber 2;
the PCB 5 is arranged in a hollow structure in the top frame 211, one end of each of two support rods 212 positioned at the front end of the shell 1 is communicated with the top frame 211, the other end of each of the two support rods 212 positioned at the rear end of the shell 1 is communicated with the top frame 211, the other end of each of the two support rods 212 is communicated with the storage compartment 13, and an opening is formed in the middle of one side of each of the support rods 212 facing the weighing chamber 2.
The working principle of the invention is as follows: when the analytical balance is started to preheat, the weighing sensor 4, the PCB 5, the memory 6 and the display 7 start to work and emit heat, the PCB 5 with the largest heat dissipation capacity heats the air in the top frame 211, the air temperature at the top in the weighing chamber 2 is higher at the moment, the heat dissipation capacity of the weighing sensor 4 is lower than that of the PCB 5, but the weighing sensor is connected with the scale pan, part of the heat can be directly dissipated to the lower part of the weighing chamber 2, the air temperature at the top and the bottom in the weighing chamber 2 is higher at the moment, the top frame 211 is respectively communicated with the weighing compartment 12 and the storage compartment 13 by the support rod 212, the air with different temperatures is exchanged through the support rod 212 and flows out from the opening of the support rod 212, so that the air temperature at the middle part in the weighing chamber 2 is uniformly distributed, and the weighing can start after the preheating is completed.
From the above description, the beneficial effects of the present invention are: the analytical balance provided by the invention divides the whole space below the traditional glass cover, the weighing sensors are respectively arranged in the weighing compartments, the memory is arranged in the storage compartment, the display is arranged at the display compartment, the space above the traditional glass cover is changed, the hollow top frame in a shape like a Chinese character 'hui' is arranged, the PCB is arranged in the hollow top frame, elements with different heat dissipation capacities are respectively arranged in different spaces and are respectively communicated through the supporting rod, the different elements heat the upper part and the lower part of the weighing chamber of the analytical balance through the heat dissipated by the elements, and the heat is dissipated to the middle part of the weighing chamber from the opening of the supporting rod, so that the temperature in the weighing chamber can be balanced in the preheating process when the analytical balance is used, and the problem of inaccurate weighing caused by air flow due to uneven air temperature distribution in the weighing chamber is avoided.
Further, the top plate 22, the side plates 24 and the front baffle 25 are glass plates or transparent resin plates, and the back plate 23 is an antistatic metal back plate.
From the above description, the glass plate or the transparent resin plate is convenient for observation and material feeding by addition and subtraction when being weighed, and the anti-static metal back plate can effectively avoid the influence caused by the accuracy of the static symmetry.
Further, the load cell 4 and the PCB board 5 are connected by a first electrical lead 51, and the first electrical lead 51 is disposed through a support rod 212 at the front end of the housing 1.
Further, the PCB board 5 and the memory 6 are connected by a second electrical lead 52, and the second electrical lead 52 is disposed through a support rod 212 at the rear end of the housing 1.
Further, the display compartment 11 and the storage compartment 13 are communicated through a connecting hole, the memory 6 and the display 7 are connected through a third electric wire 61, and the third electric wire 61 is arranged through the connecting hole.
As can be seen from the above description, not only can the various elements be connected by passing the electric leads through the support rods, but also the heat emitted by the electric leads can heat the indoor air of a weighing room, so that the temperature distribution of the indoor air is more uniform.
Further, the lower surface of the top frame 211 and the upper surface of the housing 1 are both provided with sliding grooves, the sliding grooves are used for accommodating the side plates 24, and one side of the side plates 24 facing to the outside is provided with a handle.
As apparent from the above description, the slide groove is provided so that the side plate can reciprocate in the width direction of the weighing chamber.
Further, the opening of the support rod 212 is formed by a plurality of rectangular openings arranged obliquely along the height direction of the support rod 212.
From the above description, it can be seen that the plurality of smaller rectangular openings arranged obliquely are better for uniform mixing of air than a single larger opening.
Further, a vacuum partition is provided between the weighing compartment 12 and the storage compartment 13.
As can be seen from the above description, the vacuum barrier advantageously separates the heat in the weighing compartment and in the storage compartment, and can directly convey this heat to the middle of the weighing compartment by means of the air flow.
Further, the upper surface of the shell 1 is provided with a circular groove 8, and the circular groove 8 is positioned behind the weighing pan 3.
Known from the above-mentioned description, through setting up circular recess, can place the beaker in circular recess, can place allochroic silica gel in the beaker, absorb and weigh indoor too much moisture, avoid weighing indoor humidity too big, cause weighing inaccurate problem when weighing the stronger medicament of hydroscopicity.
Further, a drying column 9 is arranged in the weighing chamber 2, and the bottom end of the drying column 9 is fixedly connected with the upper surface of the shell 1; the well upper portion of dry post 9 is equipped with hollow dry cavity 91, dry cavity 91 is big-end-up's funnel shaped structure, the top of dry cavity 91 runs through top frame 211 and sets up and in top frame 211's upper surface opening, dry cavity 91 top is equipped with sealed lid, the bottom of dry cavity 91 is equipped with the pipe 92 of oblique downward setting, pipe 92's free end opening just is equipped with valve 93, be equipped with a plurality of micropores on the lateral wall of dry post 9, the micropore is with dry cavity 91 and external intercommunication.
According to the above description, the structure that the allochroic silica gel absorbs moisture is placed through the beaker, and because the beaker is independently placed, the problems of collision and overturn can be avoided in the use process, and the particles of the allochroic silica gel are clamped in the places such as a scale pan, so that the weighing accuracy can be influenced. Through setting up dry post, dry post and analytical balance structural integration, stable in structure, and compare in ordinary little beaker, more allochroic silica gel can be placed to dry cavity, reduces the number of times of changing allochroic silica gel, and the bottom of dry post is equipped with the pipe, and the free end opening of pipe just is equipped with the valve. Can retrieve used allochroic silica gel through opening the valve to after closing the valve, follow the new allochroic silica gel of upper portion opening filling, convenient to use, and drying effect is good.
Example 1:
referring to fig. 1 and 2, an analytical balance includes a housing 1, a weighing chamber 2, a pan 3, a load cell 4, a PCB board 5, a memory 6, and a display 7; the weighing chamber 2 is arranged above the shell 1;
the shell 1 is in a right-angle trapezoid table shape with a hollow interior, the shell 1 is composed of a display compartment 11, a weighing compartment 12 and a storage compartment 13, the display compartment 11 is arranged close to the inclined plane of the shell 1, the weighing compartment 12 is arranged above the storage compartment 13, the weighing compartment 12 and the storage compartment 13 are both positioned behind the display compartment 11, and a vacuum partition plate is arranged between the weighing compartment 12 and the storage compartment 13;
the display 7 is arranged at the display compartment 11, the weighing sensor 4 is arranged in the weighing compartment 12, the memory 6 is arranged in the storage compartment 13, and the weighing pan 3 is arranged above the shell 1 and connected with the weighing sensor 4;
the weighing chamber 2 comprises a support cover 21, a top plate 22, a back plate 23, two side plates 24 and a front baffle plate 25; the supporting cover 21 comprises a square-shaped top frame 211, a supporting rod 212 is respectively arranged at four corners of the lower surface of the top frame 211, and the top frame 211 and the supporting rod 212 are both of a hollow structure;
a rectangular inner frame is formed in the center of the square-clip-shaped top frame 211, the top plate 22 is fixedly arranged at the inner frame, the back plate 23 and the front baffle plate 25 are respectively and fixedly arranged between the two support rods 212 at the front end of the shell 1 and the two support rods 212 at the rear end of the shell 1, the side plate 24 is arranged between the back plate 23 and the front baffle plate 25, sliding grooves are formed in the lower surface of the top frame 211 and the upper surface of the shell 1 and used for accommodating the side plate 24, a handle is arranged on one side, facing the outside, of the side plate 24, and the side plate 24 can reciprocate along the width direction of the weighing chamber 2;
the PCB 5 is arranged in a hollow structure in the top frame 211, one end of two support rods 212 positioned at the front end of the shell 1 is communicated with the top frame 211, the other end is communicated with the weighing compartment 12, one end of two support rods 212 positioned at the rear end of the shell 1 is communicated with the top frame 211, the other end is communicated with the storage compartment 13, and the middle part of one side of the support rods 212 facing the weighing chamber 2 is provided with an opening;
the weighing sensor 4 is sequentially connected with a PID regulator, an amplifier, a low-pass filter and an analog-to-digital converter, and the weighing devices are formed by the structures and are arranged in the weighing chamber 2;
the top plate 22, the side plates 24 and the front baffle plate 25 are transparent resin plates, and the back plate 23 is an anti-static metal back plate;
the weighing sensor 4 is connected with the PCB 5 through a first electric lead 51, and the first electric lead 51 is arranged through a support rod 212 at the front end of the shell 1; the PCB 5 and the memory 6 are connected through a second electric lead 52, and the second electric lead 52 is arranged through a support rod 212 at the rear end of the shell 1; the display compartment 11 and the storage compartment 13 are communicated through a connecting hole, the memory 6 and the display 7 are connected through a third electric lead wire 61, and the third electric lead wire 61 is arranged through the connecting hole;
the upper surface of the shell 1 is provided with a circular groove 8, and the circular groove 8 is positioned behind the weighing pan 3.
Example 2:
with reference to fig. 3 and 4, and part of fig. 1, an analytical balance comprises a housing 1, a weighing chamber 2, a pan 3, a load cell 4, a PCB board 5, a memory 6 and a display 7; the weighing chamber 2 is arranged above the shell 1;
the shell 1 is in a right-angle trapezoid table shape with a hollow interior, the shell 1 is composed of a display compartment 11, a weighing compartment 12 and a storage compartment 13, the display compartment 11 is arranged close to the inclined plane of the shell 1, the weighing compartment 12 is arranged above the storage compartment 13, the weighing compartment 12 and the storage compartment 13 are both positioned behind the display compartment 11, and a vacuum partition plate is arranged between the weighing compartment 12 and the storage compartment 13;
the display 7 is arranged at the display compartment 11, the weighing sensor 4 is arranged in the weighing compartment 12, the memory 6 is arranged in the storage compartment 13, and the weighing pan 3 is arranged above the shell 1 and connected with the weighing sensor 4;
the weighing chamber 2 comprises a support cover 21, a top plate 22, a back plate 23, two side plates 24 and a front baffle plate 25; the supporting cover 21 comprises a square-shaped top frame 211, a supporting rod 212 is respectively arranged at four corners of the lower surface of the top frame 211, and the top frame 211 and the supporting rod 212 are both of a hollow structure;
a rectangular inner frame is formed in the center of the square-clip-shaped top frame 211, the top plate 22 is fixedly arranged at the inner frame, the back plate 23 and the front baffle plate 25 are respectively and fixedly arranged between the two support rods 212 at the front end of the shell 1 and the two support rods 212 at the rear end of the shell 1, the side plate 24 is arranged between the back plate 23 and the front baffle plate 25, sliding grooves are formed in the lower surface of the top frame 211 and the upper surface of the shell 1 and used for accommodating the side plate 24, a handle is arranged on one side, facing the outside, of the side plate 24, and the side plate 24 can reciprocate along the width direction of the weighing chamber 2;
the PCB 5 is arranged in a hollow structure in the top frame 211, one end of two support rods 212 positioned at the front end of the shell 1 is communicated with the top frame 211, the other end is communicated with the weighing compartment 12, one end of two support rods 212 positioned at the rear end of the shell 1 is communicated with the top frame 211, the other end is communicated with the storage compartment 13, and the middle part of one side of the support rods 212 facing the weighing chamber 2 is provided with an opening;
the weighing sensor 4 is sequentially connected with a PID regulator, an amplifier, a low-pass filter and an analog-to-digital converter, and the weighing devices are formed by the structures and are arranged in the weighing chamber 2;
the top plate 22, the side plates 24 and the front baffle plate 25 are glass plates, and the back plate 23 is an anti-static metal back plate;
the weighing sensor 4 is connected with the PCB 5 through a first electric lead 51, and the first electric lead 51 is arranged through a support rod 212 at the front end of the shell 1; the PCB 5 and the memory 6 are connected through a second electric lead 52, and the second electric lead 52 is arranged through a support rod 212 at the rear end of the shell 1; the display compartment 11 and the storage compartment 13 are communicated through a connecting hole, the memory 6 and the display 7 are connected through a third electric lead wire 61, and the third electric lead wire 61 is arranged through the connecting hole;
a drying column 9 is arranged in the weighing chamber 2, and the bottom end of the drying column 9 is fixedly connected with the upper surface of the shell 1; the well upper portion of dry post 9 is equipped with hollow dry cavity 91, dry cavity 91 is big-end-up's funnel shaped structure, the top of dry cavity 91 runs through top frame 211 and sets up and in top frame 211's upper surface opening, dry cavity 91 top is equipped with sealed lid, the bottom of dry cavity 91 is equipped with the pipe 92 of oblique downward setting, pipe 92's free end opening just is equipped with valve 93, be equipped with a plurality of micropores on the lateral wall of dry post 9, the micropore is with dry cavity 91 and external intercommunication.
In summary, the analytical balance provided by the present invention divides the entire space under the conventional glass cover, and the weighing sensors are respectively disposed in the weighing compartments, a memory is arranged in the storage compartment, a display is arranged at the display compartment, the space above the traditional glass cover is changed, a hollow top frame shaped like a Chinese character 'hui' is arranged, the PCB is arranged in the analytical balance, the elements with different heat dissipating capacities are respectively arranged in different spaces and are respectively communicated through the supporting rod, the different elements heat the upper part and the lower part of the weighing chamber of the analytical balance through the heat dissipated by the different elements, simultaneously, heat is dissipated to the middle part of the weighing chamber from the opening of the supporting rod, so that the indoor temperature can be balanced when the analytical balance is used in the preheating process, and the problem that the weighing is inaccurate due to the fact that air flows caused by uneven distribution of the air temperature in the weighing chamber is avoided.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (10)
1. The analytical balance is characterized by comprising a shell, a weighing chamber, a weighing plate, a weighing sensor, a PCB (printed circuit board), a memory and a display; the weighing chamber is arranged above the shell;
the shell is in a right-angle trapezoid table shape with a hollow interior, and consists of a display compartment, a weighing compartment and a storage compartment, wherein the display compartment is arranged close to the inclined plane of the shell, the weighing compartment is arranged above the storage compartment, and the weighing compartment and the storage compartment are both positioned behind the display compartment;
the display is arranged at the display compartment, the weighing sensor is arranged in the weighing compartment, the memory is arranged in the storage compartment, and the weighing pan is arranged above the shell and connected with the weighing sensor;
the weighing chamber comprises a supporting cover, a top plate, a back plate, two side plates and a front baffle plate; the support cover is a square-shaped top frame, four corners of the lower surface of the top frame are respectively provided with a support rod, and the top frame and the support rods are both of hollow structures;
the center of the square-shaped top frame forms a rectangular inner frame, the top plate is fixedly arranged at the inner frame, the back plate and the front baffle plate are respectively and fixedly arranged between the two support rods positioned at the front end of the shell and the two support rods positioned at the rear end of the shell, and the side plate is arranged between the back plate and the front baffle plate and can reciprocate along the width direction of the weighing chamber;
the PCB board sets up in the hollow structure in the top frame, and two bracing piece one end and the top frame intercommunication other end that are located the shell front end with weigh the compartment intercommunication, two bracing piece one end and the top frame intercommunication other end that are located the shell rear end with store the compartment intercommunication, the bracing piece is equipped with the opening towards the middle part of weighing indoor one side.
2. The analytical balance according to claim 1, wherein the top plate, the side plates and the front bezel are glass plates or transparent resin plates and the back plate is an antistatic metal back plate.
3. The analytical balance according to claim 1, wherein the load cell is connected to the PCB board by a first electrical lead which is arranged through a support rod at the front end of the housing.
4. Analytical balance according to claim 1, characterized in that the PCB board and the memory are connected by a second electrical lead which is arranged through a support rod at the rear end of the housing.
5. The analytical balance according to claim 1, wherein the display compartment and the storage compartment are in communication via a connecting aperture, and the memory is connected to the display via a third electrical lead, which is arranged through the connecting aperture.
6. Analytical balance according to claim 1, characterized in that the lower surface of the top frame and the upper surface of the housing are provided with sliding grooves for receiving side plates, the side of which facing outwards is provided with a handle.
7. Analytical balance according to claim 1, characterized in that the openings in the support bar consist of a plurality of obliquely arranged rectangular openings arranged in the height direction of the support bar.
8. The analytical balance of claim 1 wherein a vacuum barrier is provided between the weighing compartment and the storage compartment.
9. Analytical balance according to claim 1, characterized in that the upper surface of the housing is provided with a circular recess, which is located behind the pan.
10. The analytical balance according to claim 1, wherein a drying column is arranged in the weighing chamber, the bottom end of the drying column being fixedly connected to the upper surface of the housing; the well upper portion of dry post is equipped with hollow dry cavity, dry cavity is big-end-up's funnel shaped structure, the top of dry cavity runs through top frame setting and in top frame's upper surface opening, the dry cavity top is equipped with sealed lid, the bottom of dry cavity is equipped with the pipe that sets up to one side down, the free end opening of pipe just is equipped with the valve, be equipped with a plurality of micropores on the lateral wall of dry post, the micropore is with dry cavity and external intercommunication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010914442.2A CN111998931B (en) | 2020-09-03 | 2020-09-03 | Analytical balance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010914442.2A CN111998931B (en) | 2020-09-03 | 2020-09-03 | Analytical balance |
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| CN111998931A CN111998931A (en) | 2020-11-27 |
| CN111998931B true CN111998931B (en) | 2022-04-08 |
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Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100890A (en) * | 1985-02-25 | 1986-08-20 | 株式会社岛津制作所 | Electronic balance |
| JP2540350B2 (en) * | 1987-02-28 | 1996-10-02 | ザルトリウス・ゲゼルシャフト・ミツト・ベシユレンクテル・ハフツング | Dry balance with temperature adjustment function and calibration method for dry balance |
| JPH10111167A (en) * | 1996-10-02 | 1998-04-28 | A & D Co Ltd | Electronic scale |
| DE20001455U1 (en) * | 1999-02-02 | 2000-06-21 | Sartorius Gmbh | Electronic balance with adjustment weight switch |
| DE20304062U1 (en) * | 2003-03-14 | 2004-03-18 | Sartorius Ag | Weighing scale has deep drawn aluminum air block in weighing system compartment wall to reduce temperature gradients |
| CN1487271A (en) * | 2002-09-06 | 2004-04-07 | ����������÷��-�������� | Scale with rediating device |
| DE102009055622A1 (en) * | 2009-11-25 | 2011-05-26 | Sartorius Ag | Weighing machine, has thermoelectric module with heating side connected with radiator that is connected with heat pipe in thermally conductive manner, where side of heat pipe is connected with cover of weighing compartment |
| CN202229836U (en) * | 2011-08-26 | 2012-05-23 | 山东轻工业学院 | Built-in drying device of electric analytical balance |
| CN106766119A (en) * | 2015-11-23 | 2017-05-31 | 顾瑞松 | A kind of device of utilization household electrical appliances circuit board waste-heat pipeline hot water |
| CN206523217U (en) * | 2016-12-08 | 2017-09-26 | 河南宜测科技有限公司 | A kind of use for laboratory novel electronic balance scale |
| CN107830925A (en) * | 2015-10-29 | 2018-03-23 | 梅特勒-托莱多有限公司 | Balance with active thermal flow control |
| CN207456574U (en) * | 2017-09-29 | 2018-06-05 | 上海懿贝瑞生物医药科技有限公司 | Multifunctional electronic balance |
| CN208887770U (en) * | 2018-09-25 | 2019-05-21 | 北京云帆沧海安全防范技术有限公司 | Electronic balance |
| CN110858080A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Temperature and humidity control system and method for natural gas weighing balance chamber |
| CN210154677U (en) * | 2019-09-03 | 2020-03-17 | 华志(福建)电子科技有限公司 | Precise electronic balance |
| CN111256793A (en) * | 2020-03-23 | 2020-06-09 | 山东宜维检测有限公司 | Environment-friendly high-precision constant-temperature constant-humidity weighing device |
| CN211205503U (en) * | 2019-12-17 | 2020-08-07 | 山东科技大学 | Electronic balance with drying agent device |
| CN211291715U (en) * | 2020-02-24 | 2020-08-18 | 重庆天耀金属表面处理有限公司 | Electronic balance with long service life |
| CN211347015U (en) * | 2020-03-17 | 2020-08-25 | 中烨(山东)检验检测有限公司 | Electronic balance |
-
2020
- 2020-09-03 CN CN202010914442.2A patent/CN111998931B/en active Active
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100890A (en) * | 1985-02-25 | 1986-08-20 | 株式会社岛津制作所 | Electronic balance |
| JP2540350B2 (en) * | 1987-02-28 | 1996-10-02 | ザルトリウス・ゲゼルシャフト・ミツト・ベシユレンクテル・ハフツング | Dry balance with temperature adjustment function and calibration method for dry balance |
| JPH10111167A (en) * | 1996-10-02 | 1998-04-28 | A & D Co Ltd | Electronic scale |
| DE20001455U1 (en) * | 1999-02-02 | 2000-06-21 | Sartorius Gmbh | Electronic balance with adjustment weight switch |
| CN1487271A (en) * | 2002-09-06 | 2004-04-07 | ����������÷��-�������� | Scale with rediating device |
| DE20304062U1 (en) * | 2003-03-14 | 2004-03-18 | Sartorius Ag | Weighing scale has deep drawn aluminum air block in weighing system compartment wall to reduce temperature gradients |
| DE102009055622A1 (en) * | 2009-11-25 | 2011-05-26 | Sartorius Ag | Weighing machine, has thermoelectric module with heating side connected with radiator that is connected with heat pipe in thermally conductive manner, where side of heat pipe is connected with cover of weighing compartment |
| CN202229836U (en) * | 2011-08-26 | 2012-05-23 | 山东轻工业学院 | Built-in drying device of electric analytical balance |
| CN107830925A (en) * | 2015-10-29 | 2018-03-23 | 梅特勒-托莱多有限公司 | Balance with active thermal flow control |
| CN106766119A (en) * | 2015-11-23 | 2017-05-31 | 顾瑞松 | A kind of device of utilization household electrical appliances circuit board waste-heat pipeline hot water |
| CN206523217U (en) * | 2016-12-08 | 2017-09-26 | 河南宜测科技有限公司 | A kind of use for laboratory novel electronic balance scale |
| CN207456574U (en) * | 2017-09-29 | 2018-06-05 | 上海懿贝瑞生物医药科技有限公司 | Multifunctional electronic balance |
| CN110858080A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Temperature and humidity control system and method for natural gas weighing balance chamber |
| CN208887770U (en) * | 2018-09-25 | 2019-05-21 | 北京云帆沧海安全防范技术有限公司 | Electronic balance |
| CN210154677U (en) * | 2019-09-03 | 2020-03-17 | 华志(福建)电子科技有限公司 | Precise electronic balance |
| CN211205503U (en) * | 2019-12-17 | 2020-08-07 | 山东科技大学 | Electronic balance with drying agent device |
| CN211291715U (en) * | 2020-02-24 | 2020-08-18 | 重庆天耀金属表面处理有限公司 | Electronic balance with long service life |
| CN211347015U (en) * | 2020-03-17 | 2020-08-25 | 中烨(山东)检验检测有限公司 | Electronic balance |
| CN111256793A (en) * | 2020-03-23 | 2020-06-09 | 山东宜维检测有限公司 | Environment-friendly high-precision constant-temperature constant-humidity weighing device |
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