CN211386052U - Lifting device - Google Patents

Abstract

The utility model discloses a lifting device relates to silicon material and detects preceding processing technology field. The lifting device comprises: the cleaning device comprises a first container, a second container and a cleaning liquid, wherein a sealing cover covers the first container; the second container is positioned in the first container, the second container can be lifted relative to the closed first container, and the second container is used for placing silicon materials; the bottom surface of the second container is provided with a polygonal through hole for cleaning liquid to enter and exit the second container to clean the silicon material. The utility model provides a carry and draw device, in the concrete use, can effectively reduce the external world and the pollution of washing liquid to the silicon material, and then improve the reliability and the degree of accuracy of follow-up detection.

Description

Lifting device

Technical Field

The utility model relates to a silicon material detects preceding processing technology field, especially relates to a lifting device.

Background

With the rapid development of photovoltaic solar power generation technology, silicon materials are used as the most important basic functional materials in the photovoltaic industry, and have high requirements on quality. The inductively coupled plasma mass spectrometry (ICP-MS) can be used for detecting and analyzing most elements in the silicon material, but the element content belongs to the category of trace analysis, the requirement on the environment is harsh, a sample is easy to pollute in the pretreatment process, and trace impurities can influence the performance of the silicon material and finally influence the detection and analysis result.

At present, in the preparation of silicon materials, the process of pretreating samples is an indispensable operation step. In the prior method, mixed acid solution is used for soaking, and then ultrapure water is used for cleaning so as to remove surface pollution; and then drying by adopting a heating plate. However, the sample is easily contaminated during the drying process, and the contamination introduced during the pretreatment process is high, which is a main factor causing an increase in the degree of unreliability of the final result; and after the sample is dried and cooled, the sample is processed, so that the whole sample preparation time is too long, and the working efficiency is lower.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a carry and draw device to reduce the contaminated problem of silicon material in the pretreatment process.

In order to solve the above problem, the utility model provides a:

a lifting device comprising:

the cleaning device comprises a first container, a second container and a cleaning liquid, wherein a sealing cover covers the first container;

the second container is positioned in the first container, can move up and down relative to the closed first container, and is used for placing silicon materials; the bottom surface of the second container is provided with a polygonal through hole for cleaning liquid to enter and exit the second container to clean the silicon material.

Furthermore, the polygonal through holes on the bottom surface of the second container are uniformly distributed, so that the flow distribution of the cleaning solution is uniform when the cleaning solution enters and exits the second container.

Furthermore, a polygonal through hole is also formed below the side wall of the second container, so that the cleaning liquid can enter and exit the second container.

Furthermore, the side wall of the second container is provided with at least one row of polygonal through holes in a surrounding manner.

Furthermore, the polygonal through holes in the same row on the side wall of the second container are uniformly spaced, so that the flow distribution of the cleaning liquid in the second container is uniform.

Furthermore, the polygonal through hole is a triangular through hole.

Furthermore, a buckle is arranged at one end of the first container close to the opening of the first container, and the buckle is used for pressing the sealing cover on the first container.

Furthermore, the first container is made of polytetrafluoroethylene or PFA plastic; the second container is made of polytetrafluoroethylene or PFA plastic.

Furthermore, the lifting device further comprises a lifting mechanism, the lifting mechanism is connected with the second container, and the lifting mechanism drives the second container to lift.

Furthermore, the lifting mechanism comprises a driving device and a lifting frame which are connected, and the driving device drives the lifting frame to lift; one end of the lifting frame, which is far away from the driving device, penetrates through the sealing cover and then is connected with the second container.

The utility model has the advantages that:

the utility model provides a lifting device, wherein a sealing cover is arranged on a first container outside the lifting device to isolate the external environment, so that the external environment is prevented from polluting silicon materials put into the sealing cover; meanwhile, the polygonal through hole is formed in the bottom surface of the second container in the lifting device, so that contact points with leakage can be reduced, liquid residues in the second container are reduced when the second container is lifted, and pollution to silicon materials is further reduced. Therefore the utility model discloses in use can effectively reduce the pollution to the silicon material to do not influence the follow-up detection to the silicon material, improve the reliability and the degree of accuracy that detect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view showing an external structure of a lifting device according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view showing the internal structure of a lifting device according to a preferred embodiment of the present invention;

FIG. 3 is a schematic bottom view of a second container according to a preferred embodiment of the present invention;

FIG. 4 is a schematic view showing the contact point between the leakage and the polygonal through hole in use according to a preferred embodiment of the present invention;

fig. 5 is a schematic view showing an internal structure of a lifting device according to another embodiment of the present invention.

Description of the main element symbols:

1-a first container; 2-sealing cover; 201-a through hole; 3-a second container; 301-triangular through holes; 302-diamond-shaped through holes; 4-a drive device; 5, lifting the rack; 501-connecting rod; 6-buckling; 7-liquid leakage.

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 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 exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to 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", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example one

Referring to fig. 1 to 4, the present invention provides a lifting device for pre-processing steps in an analysis process of trace impurities in a silicon material, specifically for cleaning the silicon material. The lifting device comprises a first container 1 and a second container 3, wherein the second container 3 is positioned in the first container 1, and the second container 3 can move up and down relative to the closed first container 1. The first container 1 is used for placing cleaning liquid, and the second container 3 is used for placing silicon materials.

The upper part of the first container 1 is an open end, so that the second container 3 can be placed in the first container 1 or taken out of the first container 1. The open end of the first container 1 is covered with a sealing cover 2, thereby playing a role of sealing the first container 1 and preventing the silicon material in the second container 3 from being polluted by the external environment.

In an embodiment, a polygonal through hole is formed in the bottom surface of the second container 3, and is used for the cleaning solution to enter and exit the second container 3; and after the second container 3 is placed in the first container 1, cleaning liquid enters the second container 3 to clean the silicon material.

When in use, the first container 1 is poured with cleaning solution; and (2) putting the silicon material into the second container 3, putting the second container 3 into the first container 1, covering the sealing cover 2, and making the second container 3 descend to the bottom of the first container 1. And the cleaning liquid enters the second container 3 through the polygonal through hole on the bottom surface of the second container 3 to clean the silicon material. After soaking for a period of time, slowly lifting the second container 3 upwards; the cleaning liquid will return from the polygonal through hole into the first container 1. And after the second container 3 is separated from the cleaning solution, opening the sealing cover 2, and taking out the silicon material in the second container 3 for subsequent detection.

In the container with the leakage holes in the prior art, the leakage holes are round holes, and when the round holes discharge liquid, the leakage liquid 7 can be in comprehensive contact with the inner walls of the round holes, so that more cleaning liquid is remained on the inner walls of the round holes, and more cleaning liquid is remained in the corresponding container to pollute silicon materials. However, the cleaning solution is equivalent to a contaminant for the subsequent detection of the silicon material, and the detection result is affected. For trace analysis of silicon materials, the content of components to be detected in the silicon materials is lower than one millionth, and the residual cleaning solution can have great influence on detection and analysis of the silicon materials.

And the utility model discloses in adopt the polygon through-hole, when the discharge washing liquid, be the multipoint mode contact between weeping 7 and the polygon through-hole, not comprehensive contact, it is compared in round hole area of contact significantly reduced, and then remaining washing liquid also can reduce relatively on the polygon through-hole inner wall. Therefore, the cleaning liquid remained in the second container 3 can be greatly reduced, and further, the pollution to the silicon material in the second container 3 is reduced; the subsequent detection result of the silicon material has higher reliability and accuracy. And simultaneously, the utility model discloses in the open end of first container 1 increases sealed lid 2, makes first container 1 form seal chamber, and then avoids external environment to the pollution of silicon material, has further reduced the influence to follow-up detection.

In a specific use, the cleaning liquid put into the first container 1 can be a 3% hydrofluoric acid solution.

Example two

Referring to fig. 1 to 4, based on the first embodiment, further, the polygonal through holes on the bottom surface of the second container 3 are uniformly arranged, and when the cleaning solution enters and exits the second container 3, the flow rate of the cleaning solution at each part is uniformly distributed, so that the bottom surface of the second container 3 is uniformly stressed.

In an embodiment, two rows of polygonal through holes are disposed below the sidewall of the second container 3, and are used for the cleaning solution to enter and exit the second container 3. The two rows of the polygonal through holes are arranged around the side wall of the second container 3; and a space is arranged between the two rows of polygonal through holes. The polygonal through holes in the same row are arranged at intervals and are uniform in interval. Therefore, when the second container 3 is pulled upwards, the cleaning liquid in the second container 3 can be discharged from the polygonal through hole on the side wall of the second container 3; and the flow of the cleaning liquid at the periphery of the second container 3 is uniform and symmetrical, so that the second container 3 is prevented from inclining due to uneven stress in the lifting process.

In other embodiments, the polygonal through holes provided on the side wall of the second container 3 can be arranged in other numbers such as one row, three rows, etc.

In other embodiments, the polygonal through holes of each row may be non-uniformly spaced.

Of course, in other embodiments, the polygonal through holes disposed on the sidewall of the second container 3 may also be arranged in a scattered manner, so that the cleaning solution in the second container 3 may be discharged.

In this embodiment, the polygonal through holes below the side wall and at the bottom of the second container 3 are triangular through holes 301; the leakage 7 has only three contact points with the triangular through hole 301, thereby ensuring that only a small amount of cleaning solution remains on the triangular through hole 301. In the process of lifting the second container 3 upwards, the cleaning solution remained on the inner wall of the triangular through hole 301 can be quickly dried and volatilized, so as to ensure that the silicon material in the second container 3 is not polluted.

Referring to fig. 5, in some other embodiments, the polygonal through holes under the bottom and the side walls of the second container 3 may be further configured as diamond-shaped through holes 302. Four contact points are arranged between the diamond-shaped through hole 302 and the leakage 7, and in the lifting process, the residual cleaning liquid can be quickly drained and volatilized, so that the silicon material in the second container 3 is prevented from being polluted.

In other embodiments, the polygonal through holes under the bottom and side walls of the second container 3 may have other quadrilateral shapes.

In other embodiments, the polygonal through holes on the bottom surface and the polygonal through holes under the side walls of the second container 3 may be different polygonal through holes respectively, so as to allow the cleaning solution to enter and exit the second container 3.

In other embodiments, the polygonal through holes on the bottom surface of the second container 3 may be staggered from polygonal through holes of different shapes. Polygonal through holes below the side wall of the second container 3 can also be arranged in a staggered mode.

Further, in an embodiment, the lifting device further includes a lifting mechanism, the lifting mechanism is connected to the second container 3, and the lifting mechanism is configured to drive the second container 3 to lift. The lifting mechanism comprises a driving device 4 and a lifting frame 5 which are connected, and the driving device 4 drives the lifting frame 5 to lift; one end of the lifting frame 5, which is far away from the driving device 4, penetrates through the sealing cover 2 and then is connected with the second container 3. The sealing cover 2 is provided with a through hole 201 through which the lifting frame 5 passes; one end of the lifting frame 5 penetrates through the through hole 201 to enter the first container 1 and is connected with the side wall of the second container 3, and then the lifting frame 5 drives the second container 3 to lift.

In this embodiment, the driving device 4 is a linear stepping motor, so as to drive the lifting frame 5 to realize the lifting action.

In other embodiments, the driving device 4 may also be a power device such as an air cylinder, etc. to drive the lifting frame 5 to perform the lifting action.

In specific use, the driving device 4 can be fixedly installed through a fixing frame to ensure that the lifting mechanism smoothly drives the second container 3 to lift. Alternatively, the driving device 4 may be directly fixed to a structure such as a laboratory bench.

In the embodiment, a connecting rod 501 is arranged on one side of the lifting frame 5 close to the second container 3; a clamping groove (not shown in the figure) is arranged on the outer wall of the second container 3; one end, far away from the lifting frame 5, of the connecting rod 501 is clamped into the clamping groove, so that the lifting frame 5 is connected with the second container 3, and the lifting frame drives the second container 3 to lift.

Of course, in other embodiments, the crane 5 and the second container 3 may be connected directly or indirectly by means of adhesion, screw connection, or string connection.

In the embodiment, the first container 1 is made of a material which is corrosion-resistant, acid-resistant and easy to clean. In the utility model, the first container 1 is made of polytetrafluoroethylene material; therefore, in use, the corrosion of hydrofluoric acid solution to the cleaning agent is avoided, and the subsequent cleaning work is facilitated.

In other embodiments, the first container 1 may be made of other antiseptic, acid-resistant and easy-to-clean materials such as PFA plastic (copolymer of small amount of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene).

In the embodiment, the second container 3 is made of a material which is corrosion-resistant, acid-resistant and easy to clean. In the utility model, the second container 3 is made of polytetrafluoroethylene material; therefore, in use, the corrosion of hydrofluoric acid solution to the cleaning agent is avoided, and the subsequent cleaning is convenient.

In other embodiments, the second container 3 may be made of PFA plastic or other corrosion-resistant, acid-resistant, and easy-to-clean material.

In the embodiment, the outer wall of one end of the first container 1 close to the opening is further provided with a buckle 6 for fastening the sealing cover 2 at the opening end of the first container 1; thereby playing a better sealing effect and preventing the external environment from polluting the internal silicon material.

Pouring a proper amount of 3% hydrofluoric acid solution into the first container 1 in the process of pretreating the silicon material; the distance between the liquid surface of the hydrofluoric acid solution and the open end of the first container 1 is larger than the height of the second container 3; this ensures that the second container 3 can be completely freed from the hydrofluoric acid solution during the pulling process. And (3) putting silicon materials into the second container 3, covering the sealing cover 2 on the opening end of the first container 1, and buckling a buckle 6. And starting the driving device 4, and enabling the second container 3 to descend to the bottom of the first container 1 under the driving of the driving device 4. During the descending process of the second container 3, the hydrofluoric acid solution in the first container 1 gradually enters the second container 3. After soaking for a period of time, starting the driving device 4 to drive the second container 3 to be slowly lifted upwards to the top of the first container 1; during the pulling, the hydrofluoric acid solution in the second container 3 is gradually discharged from the polygonal through-hole. In the pulling process after the second container 3 is separated from the hydrofluoric acid solution, the hydrofluoric acid solution on the surface of the silicon material is gradually dried and volatilized; and hydrofluoric acid solution on the inner wall of the polygonal through hole can be quickly dried and volatilized; thereby avoiding the hydrofluoric acid solution residue and polluting the subsequent detection of the silicon material. Subsequently, the sealing cover 2 is opened, the second container 3 is taken out, and the silicon material is taken out for subsequent detection and analysis.

Therefore, will the utility model provides a carry and draw device uses in silicon material pretreatment process, can save the step of heating and drying, and then has avoided the pollution risk that probably exists at the stoving in-process, improves silicon material trace analysis's reliability and degree of accuracy. Meanwhile, the operation time of the pretreatment process is shortened, and the detection efficiency is improved.

And simultaneously, the utility model provides a carry and draw device has advantages such as simple structure, convenient operation to reduce the cost in the in-service use of production.

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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, 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 to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A lifting device, comprising:

the cleaning device comprises a first container, a second container and a cleaning liquid, wherein a sealing cover covers the first container;

the second container is positioned in the first container, the second container can be lifted relative to the closed first container, and the second container is used for placing silicon materials; the bottom surface of the second container is provided with a polygonal through hole for cleaning liquid to enter and exit the second container to clean the silicon material.

2. The lift device of claim 1, wherein the polygonal shaped perforations in the bottom surface of the second container are evenly distributed to provide uniform flow distribution of cleaning fluid into and out of the second container.

3. The lifting device as recited in claim 1, wherein a polygonal through hole is also provided below the sidewall of the second container for the cleaning solution to enter and exit the second container.

4. The lift-pull of claim 3, wherein the sidewall of the second container is circumferentially provided with at least one row of polygonal through-holes.

5. The lift device of claim 4 wherein said polygonal apertures in said same row of said second container sidewall are evenly spaced to provide uniform flow distribution of cleaning fluid into and out of said second container.

6. The pulling device as set forth in any one of claims 1 to 5, wherein the polygonal through hole is a triangular through hole.

7. The lift-off device of claim 1, wherein the first container is provided with a snap near an open end thereof for compressing the seal cap against the first container.

8. The pulling apparatus as defined in claim 1, wherein the first container is made of teflon or PFA plastic; the second container is made of polytetrafluoroethylene or PFA plastic.

9. The lifting device as recited in claim 1, further comprising a lifting mechanism, the lifting mechanism being coupled to the second container, the lifting mechanism moving the second container up and down.

10. The lifting device as recited in claim 9, wherein the lifting mechanism comprises a driving device and a lifting frame connected to each other, the driving device driving the lifting frame to move up and down; one end of the lifting frame, which is far away from the driving device, penetrates through the sealing cover and then is connected with the second container.

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