CN219551685U - Analytical balance - Google Patents

Abstract

The utility model discloses an analytical balance, and belongs to the technical field of laboratory equipment. An analytical balance comprising: a base; the protective cover is clamped on the base; the connecting plate is fixedly connected to the protective cover; the bidirectional screw rod is rotationally connected to the base; the abutting block is matched with the bidirectional screw rod; the supporting blocks are arranged in two groups and are symmetrically arranged on the bidirectional screw rod; when the bidirectional screw rod rotates, the two groups of abutting blocks are close to each other, and the two groups of abutting blocks clamp the connecting plate to finish the fixation of the protective cover; the two-way screw rod rotates to drive the abutting blocks to move, and the two groups of abutting blocks which are symmetrically arranged are mutually close to each other to move, so that the connecting plate is clamped, the connecting plate is fixed, the fixing effect on the protective cover can be improved, and the condition that the protective cover is easy to displace in the experimental process is reduced; the fixing effect of the connecting plate can be further improved by clamping and fixing the clamping blocks and the clamping grooves, and the fixing effect of the protective cover is further improved.

Description

Analytical balance

Technical Field

The utility model relates to the technical field of laboratory equipment, in particular to an analytical balance.

Background

Analytical balances are high-accuracy weighing instruments. Due to the sensitivity of the high performance weighing cell, analytical balances are equipped with a windshield (also known as a housing) to ensure a stable weighing environment. The electronic analytical balance has various application programs such as full-automatic fault detection, external method code, automatic calibration, all linear four-point calibration, overload protection and the like, and is widely applied to the detection and analysis field.

Patent CN205981430U in 2017-02-22 discloses an electronic analytical balance, the structure of which comprises: the utility model provides an electronic analysis balance, which is provided with a humidity testing device and can test humidity in the electronic analysis balance so as to ensure whether the internal humidity is dry, avoid a reaction between a moisture-sensitive object and moisture in the air and increase the weight of the object.

The electronic analytical balance still has certain defects in the use process, the outer cover of the electronic analytical balance can generate displacement due to external shaking, impact and blowing in the use process, dislocation gaps can be generated when the outer cover generates displacement, the external environment can influence the detection result, and the fixing effect of the outer cover is still to be further improved.

Disclosure of Invention

The utility model provides an analytical balance which aims at solving the problem that a protective cover is easy to displace in the using process of an electronic balance in the prior art, and the fixing effect of the protective cover needs to be further improved.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

an analytical balance comprising:

a base;

the protective cover is clamped on the base;

the connecting plate is fixedly connected to the protective cover;

the bidirectional screw rod is rotationally connected to the base;

the abutting block is matched with the bidirectional screw rod;

the supporting blocks are arranged in two groups and are symmetrically arranged on the bidirectional screw rod;

when the bidirectional screw rod rotates, the two groups of abutting blocks are close to each other, and the two groups of abutting blocks clamp the connecting plate to fix the protective cover.

In order to improve the fixing effect on the protective cover, preferably, a clamping groove is formed in the base, a clamping block is fixedly connected to the upper side wall of the connecting plate, and the clamping block is matched with the clamping groove.

In order to further ensure the fixing effect on the protective cover, further, a first magnet is fixedly connected to the side wall of the connecting plate, a second magnet is fixedly connected to the abutting block, and the first magnet and the second magnet are attracted.

In order to be convenient for rotate two-way lead screw, further, open there is the spout on the base, two-way lead screw one end rotates to be connected on the spout inside wall, two-way lead screw other end fixedly connected with carousel.

In order to enable the abutting block and the second magnet to stably slide, the sliding groove is further matched with the abutting block; the sliding groove is matched with the second magnet.

Compared with the prior art, the utility model provides an analytical balance, which has the following beneficial effects:

this analytical balance drives through two-way lead screw rotation and supports the piece and remove, and support the piece through two sets of symmetries setting and be close to each other and remove to the centre gripping connecting plate, thereby accomplish the fixed to the connecting plate, thereby can improve the fixed effect to the protection casing, reduced the condition that the protection casing easily appears the displacement in the experimental process.

This analytical balance is fixed through fixture block and draw-in groove block to can further improve the fixed effect of connecting plate, thereby further improve the fixed effect of protection casing.

This analytical balance inhales mutually through first magnet and second magnet to can guarantee to support the clamping effect of piece to the connecting plate, further improve the fixed effect to the protection casing, thereby further solved the problem that the protection casing appears the displacement easily in the experimental process.

Drawings

FIG. 1 is a schematic diagram of an analytical balance according to the present utility model;

FIG. 2 is a schematic diagram of a rear view of an analytical balance according to the present utility model;

FIG. 3 is an exploded view of an analytical balance according to the present utility model;

FIG. 4 is a schematic view of a base structure of an analytical balance according to the present utility model;

FIG. 5 is an enlarged schematic view of the portion A of an analytical balance according to the present utility model;

FIG. 6 is an enlarged schematic view of the portion B of an analytical balance according to the present utility model;

fig. 7 is an enlarged schematic view of the portion C of an analytical balance according to the present utility model.

In the figure: 1. a protective cover; 101. a connecting plate; 1011. a clamping block; 1012. a first magnet; 2. a base; 201. weighing tray; 202. a chute; 203. a clamping groove; 3. a turntable; 301. a two-way screw rod; 3011. abutting blocks; 3012. and a second magnet.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Examples

Referring to fig. 1-7, an analytical balance comprising:

a base 2;

the protective cover 1 is clamped on the base 2;

the connecting plate 101 is fixedly connected to the protective cover 1;

the bidirectional screw rod 301 is rotatably connected to the base 2;

the supporting block 3011 is matched with the bidirectional screw rod 301;

the supporting blocks 3011 are arranged in two groups and symmetrically arranged on the bidirectional screw rod 301;

when the bidirectional screw rod 301 rotates, the two groups of abutting blocks 3011 are close to each other, and the two groups of abutting blocks 3011 clamp the connecting plate 101 to fix the protective cover 1.

The base 2 is provided with a clamping groove 203, a clamping block 1011 is fixedly connected on the upper side wall of the connecting plate 101, and the clamping block 1011 is matched with the clamping groove 203.

A first magnet 1012 is fixedly connected to the side wall of the connecting plate 101, a second magnet 3012 is fixedly connected to the supporting block 3011, and the first magnet 1012 and the second magnet 3012 attract each other.

The base 2 is provided with a chute 202, one end of a bidirectional screw rod 301 is rotatably connected to the inner side wall of the chute 202, and the other end of the bidirectional screw rod 301 is fixedly connected with a turntable 3.

The chute 202 is matched with the abutting block 3011; the chute 202 is matched with the second magnet 3012.

Referring to fig. 1 to 7, when in use, an object to be detected and analyzed is placed on a weighing disc 201, after the placement is completed, a protective cover 1 and a base 2 are opposite, a clamping block 1011 is aligned with a clamping groove 203, after the alignment, the protective cover 1 is pressed, in the pressing process, the clamping block 1011 slides downwards in the clamping groove 203, when the clamping block 1011 is abutted against the bottom wall of the clamping groove 203, the pressing of the protective cover 1 is stopped, at the moment, the preliminary fixing is completed, and the clamping block 1011 and the clamping groove 203 are matched and clamped, so that the preliminary fixing of the protective cover 1 can be completed, the fixing effect of the protective cover 1 can be improved, and further displacement in the use process can be effectively prevented;

after preliminary fixing, the turntable 3 is manually rotated to further drive the bidirectional screw rod 301 fixedly connected with the turntable to rotate, the bidirectional screw rod 301 rotates to drive the supporting blocks 3011 matched with the bidirectional screw rod to move, two groups of supporting blocks 3011 are gradually close, when the supporting blocks 3011 are supported against the connecting plate 101, the two groups of supporting blocks 3011 can clamp the connecting plate 101, and the connecting plate 101 is clamped by the two groups of supporting blocks 3011, so that the fixing effect of the protective cover 1 is further improved, and the problem that the protective cover 1 is easy to displace in the experimental process is further solved;

in the clamping process of the connecting plate 101, the second magnet 3012 on the supporting block 3011 is attracted to the first magnet 1012 on the connecting plate 101, and the first magnet 1012 and the second magnet 3012 are attracted to ensure the clamping effect of the supporting block 3011 on the connecting plate 101, so that the supporting block 3011 cannot be loose due to the rotation of the bidirectional screw rod 301 in the experimental process, the fixing effect of the protective cover 1 is further improved, and the problem that the protective cover 1 is easy to displace in the experimental process is further solved.

The two-way screw rod 301 in the device rotates to drive the abutting blocks 3011 to move, and the two groups of symmetrically arranged abutting blocks 3011 move close to each other, so that the connecting plate 101 is clamped, the fixing of the connecting plate 101 is completed, the fixing effect of the protective cover 1 can be improved, and the condition that the protective cover 1 is easy to displace in the experimental process is reduced;

the clamping block 1011 and the clamping groove 203 in the device are clamped and fixed, so that the fixing effect of the connecting plate 101 can be further improved, and the fixing effect of the protective cover 1 is further improved;

through the first magnet 1012 and the second magnet 3012 in the device inhale mutually to can guarantee to support the clamping effect of piece 3011 to connecting plate 101, further improve the fixed effect to protection casing 1, thereby even further solved the easy problem that appears the displacement of protection casing 1 in the experimental process.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "plurality" is two or more unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 present utility model. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (6)

1. An analytical balance, comprising:

a base (2);

the protective cover (1) is clamped on the base (2);

the connecting plate (101) is fixedly connected to the protective cover (1);

the bidirectional screw rod (301) is rotationally connected to the base (2);

the abutting block (3011) is matched with the bidirectional screw rod (301);

the supporting blocks (3011) are arranged in two groups and symmetrically arranged on the bidirectional screw rod (301);

when the bidirectional screw rod (301) rotates, the two groups of abutting blocks (3011) are close to each other, the two groups of abutting blocks (3011) clamp the connecting plate (101), and the fixing of the protective cover (1) is completed.

2. An analytical balance according to claim 1, characterized in that the base (2) is provided with a clamping groove (203), a clamping block (1011) is fixedly connected to the upper side wall of the connecting plate (101), and the clamping block (1011) is matched with the clamping groove (203).

3. An analytical balance according to claim 2, wherein a first magnet (1012) is fixedly connected to the side wall of the connecting plate (101), a second magnet (3012) is fixedly connected to the supporting block (3011), and the first magnet (1012) and the second magnet (3012) attract each other.

4. An analytical balance according to claim 1, characterized in that the base (2) is provided with a chute (202), one end of the bidirectional screw rod (301) is rotatably connected to the inner side wall of the chute (202), and the other end of the bidirectional screw rod (301) is fixedly connected with a turntable (3).

5. An analytical balance according to claim 4, characterized in that the chute (202) is matched to the abutment (3011).

6. An analytical balance according to claim 4, characterized in that the chute (202) is matched to the second magnet (3012).