CN210625837U

CN210625837U - High-precision electronic balance

Info

Publication number: CN210625837U
Application number: CN201921082061.1U
Authority: CN
Inventors: 吴�琳; 胡汉高; 李盈
Original assignee: Wuhan Haipu Biomedical Technology Co ltd
Current assignee: Wuhan Haipu Biomedical Technology Co ltd
Priority date: 2019-07-11
Filing date: 2019-07-11
Publication date: 2020-05-26
Anticipated expiration: 2029-07-11

Abstract

The utility model discloses a high-accuracy electronic balance, the mode through utilizing spout and square slider's effect edgewise roll-off with the weighing plate carries out the sample and places, compare in the mode of opening the fan housing side door and placing the sample, the technique of this patent action range is little when the operation, gliding whole process is very smooth-going, vibrations are little, external air current is also very little to the inside disturbance of fan housing, can make measuring result have higher precision and stability, data fluctuation has effectively been avoided.

Description

High-precision electronic balance

Technical Field

The utility model belongs to the technical field of electronic balance, especially a high-accuracy electronic balance.

Background

An electronic balance is a common weighing device, wherein the absolute precision division value of the electronic balance with the precision of one hundred thousand reaches 0.01 mg. Such high-precision electronic balances mostly have a shield for blocking the influence of the ambient air flow. When the balance is used, the door of the protective cover is opened firstly, a weighed object is slowly placed on the tray, then the door is closed, and the reading on the balance is read. The whole process needs to be as gentle and slow as possible, and meanwhile, the operating platform needs to be kept clean, so that the influence of dust impurities or air flow is avoided, and the huge error of weighing data is avoided.

In the prior art, for example, patent CN208505462U provides a space-saving precision electronic balance, which adopts a special design of gears and racks, and an inner door is opened when an outer door is opened, so that a smaller opening space is occupied, the influence of external factors on the weighing result of a weighed article when a side door is opened is reduced, and the weighing stability is improved. However, in any method of fully opening one side of the fan cover, the action amplitude is large, and a certain degree of shaking or air flow disturbance is inevitably generated, so that the vector result is influenced.

Disclosure of Invention

In order to solve the problem of the prior art, the action range of the laying-out on the tray of the balance is reduced as much as possible, the utility model provides a high-precision electronic balance is realized through following technical scheme.

The high-precision electronic balance comprises a base and a fan cover, wherein the fan cover is fixed above the base; the weighing plate is placed on the weighing seat of the base, and sliding grooves are symmetrically formed in the front side and the rear side of the fan cover; an outlet is formed in the right side of the fan cover, and a cover plate is arranged on the outlet;

the sliding groove comprises a vertical part and a horizontal part, the top end of the vertical part is vertically communicated with the left end of the horizontal part to form a gamma shape, a slidable square sliding block is arranged on the sliding groove, and the shape of the square sliding block is matched with that of the sliding groove; one of the sliding grooves is set as a through groove, and the other sliding groove is provided with a handle which passes through the through groove and is connected with the corresponding square sliding block; the square sliding block is provided with a clamping piece; the square sliding block drives the clamping piece to support the weighing disc when the vertical part slides upwards.

Above-mentioned high-precision electronic balance adopts mechanisms such as weighing sensor, display screen, button, horizontal adjuster with current electronic balance the same technique on the base, through pull handle, with square slider and holder lifting, holds up the weighing plate, then slides the weighing plate right side, and the board of uncapping makes the weighing plate roll-off fan housing, puts and slides to initial position again after weighing the thing, measures. When the electronic balance is not used, the weighing disc is placed on the weighing seat, the square sliding block is located at the bottom end of the vertical part of the sliding groove, and the clamping piece is not in contact with the weighing disc. When the electronic balance needs to be used, the square sliding block is lifted through the handle, the square sliding block pushes the clamping piece to be lifted, and the clamping piece gradually clamps and supports the weighing disc in the lifting process, so that the weighing disc is separated from the weighing seat. When the square sliding block is lifted to the top end of the vertical part of the sliding groove, the handle is pushed rightwards, and the square sliding block, the clamping piece and the weighing disc slide rightwards together. The clamping piece opens the cover plate in the sliding process, and the cover plate is kept in an open state after the weighing plate completely slides out. At this point, the operator may place the sample on the weighing pan. After the sample is placed, the handle is pulled leftwards, so that the square sliding block, the clamping piece and the weighing disc slide leftwards together, and the cover plate covers the outlet again. When the square sliding block slides to the top end of the vertical part leftwards, the handle continues to slide downwards, so that the square sliding block, the clamping piece and the weighing plate also slide downwards. In the downward sliding process of the square sliding block and the clamping piece, the weighing disc is contacted with the weighing seat again, the square sliding block and the clamping piece continue to slide down to the bottom end of the vertical part, the weighing disc is separated from the clamping piece, and reading can be started after standing for several seconds.

Preferably, the cover plate is rotatably connected with the fan housing through a rotating shaft.

More preferably, a return spring is arranged on the rotating shaft; when the return spring is in an initial state, the cover plate covers the outlet.

More preferably, a pushing and lifting plate is vertically arranged on the clamping piece; when the clamping piece slides rightwards, the cover plate is pushed up by the pushing and lifting plate. When the square sliding block, the clamping piece and the weighing disc slide towards the right, the cover plate is firstly gradually pushed upwards by the pushing and lifting plate, so that the weighing disc can slide out of the outlet gradually after sliding subsequently. When the sample is placed, the square sliding block, the clamping piece and the weighing disc slide towards the left, the pushing plate is directly and gradually separated from the cover plate, and the cover plate covers the outlet again.

Preferably, the shape of the clamp matches the outer shape of the weighing pan.

Preferably, a limiting piece is arranged at the center of the bottom of the weighing plate, and the shape of the limiting piece is matched with that of the weighing seat. The limiting piece has the function of ensuring that the relative position between the weighing plate and the weighing seat is always kept unchanged, and the measuring precision is ensured.

Compared with the prior art, the beneficial effects of the utility model are that: carry out the sample through the mode with weighing plate edgewise roll-off and place, compare in the mode of opening the fan housing side door and placing the sample, the technique of this patent action range is little when the operation, and gliding whole process is very smooth-going, and vibrations are little, and external air current is also very little to the inside disturbance of fan housing, can make measuring result have higher precision and stability, has effectively avoided data fluctuation.

Drawings

FIG. 1 is a left side view of a high precision electronic balance of example 1 when not in use;

FIG. 2 is a left side view of the high precision electronic balance according to example 1 when a square slider slides;

FIG. 3 is a left side view of the high precision electronic balance of example 1 with the weighing pan completely slid out of the outlet;

FIG. 4 is a top view of the high-precision electronic balance according to example 1;

FIG. 5 is a front view of the high-precision electronic balance according to example 1;

FIG. 6 is a partial schematic structural view of the high-precision electronic balance of example 2 at the cover plate;

fig. 7 is a left side view of a holder and a lift plate of the high-precision electronic balance according to example 2;

fig. 8 is a bottom view of a weighing pan and a weighing seat of the high-precision electronic balance according to example 2;

in the figure: 1. a base; 2. a fan housing; 3. a weighing pan; 4. a weighing seat; 5. a chute; 501. a vertical portion; 502. a horizontal portion; 6. an outlet; 7. a cover plate; 8. a rotating shaft; 9. a square slider; 10. a handle; 11. a clamping member; 12. a return spring; 13. a thrust plate; 14. a limiting sheet.

Detailed Description

The technical solutions of the embodiments in this patent will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments, not all embodiments, of this patent. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the patent without making creative efforts, shall fall within the protection scope of the patent.

In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the patent and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the patent. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of this patent, it is noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "communicating" are to be construed broadly, e.g., as meaning 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. It is to be noted that all the figures are exemplary representations. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.

The patent is described in further detail below with reference to specific embodiments and with reference to the attached drawings.

Example 1

As shown in fig. 1 to 5, the high-precision electronic balance provided in this embodiment includes a base 1 and a fan housing 2, where the fan housing 2 is fixed above the base 1; the weighing plate 3 is placed on a weighing seat 4 of the base 1, and sliding chutes 5 are symmetrically arranged on the front side and the rear side of the fan housing 2; an outlet 6 is formed in the right side of the fan cover 2, and a cover plate 7 is arranged on the outlet 6; the cover plate 7 is rotatably connected with the fan housing 2 through a rotating shaft 8.

The sliding chute 5 comprises a vertical part 501 and a horizontal part 502, the top end of the vertical part 501 is vertically communicated with the left end of the horizontal part 502 to form a gamma shape, a slidable square sliding block 9 is arranged on the sliding chute 5, and the shape of the square sliding block 9 is matched with that of the sliding chute 5; any one of the sliding grooves is set as a through groove, and a handle 10 is arranged to penetrate through the through groove to be connected with the corresponding square sliding block 9; the square sliding block 9 is provided with a clamping piece 11; the square slider 9 drives the clamping member 11 to lift the weighing pan 3 when the vertical portion 501 slides up.

Example 2

As shown in fig. 6 to 8, in the high-precision electronic balance provided in this embodiment, on the basis of embodiment 1, a return spring 12 is provided on the rotating shaft 8; when the return spring 12 is in an initial state, the cover plate 7 covers the outlet 6; a pushing and lifting plate 13 is vertically arranged on the clamping piece 11; when the clamping piece 11 slides rightwards, the cover plate 7 is pushed up by the pushing and lifting plate 13; the shape of the clamping piece 11 matches the shape of the weighing pan 3; the bottom center of the weighing plate 3 is provided with a limiting piece 14, and the shape of the limiting piece 14 is matched with that of the weighing seat 4.

Compared with the embodiment 1, the whole process is more convenient, the cover plate can be opened and closed without additional manual operation, the relative position between the weighing plate and the weighing seat is more fixed, and the precision is further improved.

The above embodiments describe the implementation of the present invention in detail, however, the present invention is not limited to the specific details of the above embodiments. Within the scope of the claims and the technical idea of the present invention, various simple modifications and changes can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

Claims

1. The high-precision electronic balance comprises a base and a fan cover, wherein the fan cover is fixed above the base; the wind shield is characterized in that a weighing disc is placed on a weighing seat of the base, and sliding grooves are symmetrically formed in the front side and the rear side of the wind shield; an outlet is formed in the right side of the fan cover, and a cover plate is arranged on the outlet;

2. The high-precision electronic balance according to claim 1, wherein the cover plate is rotatably connected with the fan housing through a rotating shaft.

3. The high-precision electronic balance according to claim 2, wherein a return spring is provided on the shaft; when the return spring is in an initial state, the cover plate covers the outlet.

4. The high-precision electronic balance according to claim 3, wherein a lifting plate is vertically provided on the holder; when the clamping piece slides rightwards, the cover plate is pushed up by the pushing and lifting plate.

5. A high precision electronic balance according to any of claims 1 to 4 wherein the shape of the holder matches the outer shape of the weighing pan.

6. The high-precision electronic balance according to any one of claims 1 to 4, wherein a limiting piece is arranged at the center of the bottom of the weighing plate, and the shape of the limiting piece is matched with that of the weighing seat.