CN218496956U

CN218496956U - Quantitative acid adding instrument

Info

Publication number: CN218496956U
Application number: CN202222934329.8U
Authority: CN
Inventors: 邵涛; 鲁明; 雷文敬; 胡悦立
Original assignee: Tianjin Zhongsheng Instrument Co ltd
Current assignee: Tianjin Zhongsheng Instrument Co ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-02-17
Anticipated expiration: 2032-11-04

Abstract

The present disclosure provides a quantitative acidification instrument, which includes: the weighing device comprises a base and a weighing tray arranged on the base; the weighing tray is used for weighing the mass of the digestion tubes placed on the weighing tray; the upright post is fixed on a base of the weighing device; a support adjustably disposed on the upright such that at least a portion of the support is positioned directly above the weighing tray; and at least part of the liquid feeding pipe is supported by the supporting piece, and liquid is added into the digestion pipe arranged on the weighing tray through the liquid feeding pipe.

Description

Quantitative acid adding instrument

Technical Field

The present disclosure relates to a quantitative acidification instrument.

Background

The pretreatment method for inorganic element analysis, such as microwave digestion, electrothermal digestion and the like, requires adding nitric acid, hydrofluoric acid, perchloric acid, hydrochloric acid and the like into a sample to be detected, digesting at high temperature, and analyzing and detecting the digested sample.

In a laboratory, most of the acidification before digestion requires manual operation, for example, a manual pipette or a pipetter is mainly used for adding the acid, and an operator manually sucks a set amount of acid from a reagent bottle into the pipette or the pipetter and then manually transfers the acid into a digestion tube.

The manual operation steps are complicated, the sample processing time is too long, and the efficiency is low; time and labor are wasted, the operation error is large, and the harm to the health of an operator is also large.

SUMMERY OF THE UTILITY MODEL

In order to solve one of the above technical problems, the present disclosure provides a quantitative acidification instrument.

According to an aspect of the present disclosure, there is provided a quantitative acid adding instrument, including:

the weighing device comprises a base and a weighing tray arranged on the base; the weighing tray is used for weighing the mass of the digestion tubes placed on the weighing tray;

the upright post is fixed on a base of the weighing device;

a support adjustably disposed on the upright such that at least a portion of the support is positioned directly above the weighing tray; and

and at least part of the liquid feeding pipe is supported by the supporting piece, and liquid is added into the digestion pipe arranged on the weighing tray through the liquid feeding pipe.

According to the quantitative acid adding instrument of at least one embodiment of the present disclosure, the support member includes:

the fixing part is used for fixing the supporting piece to the upright post;

a support for supporting the filler tube; and

a connecting portion for connecting the fixing portion and the supporting portion.

According to the quantitative acid adding instrument of at least one embodiment of the present disclosure, the supporting portion is provided to be inclined downward in a direction away from the pillar.

According to the quantitative acidification instrument of at least one embodiment of the present disclosure, an included angle between the supporting portion and the upright post is 45 °.

According to the quantitative acid adding instrument of at least one embodiment of the present disclosure, a through hole is formed on the supporting part, and one end of the liquid adding pipe passes through the through hole and is located outside the supporting part.

According to the quantitative acidification instrument of at least one embodiment of the present disclosure, an included angle between a center line of the through hole and the upright post is 45 °.

According to the quantitative acid adding instrument of at least one embodiment of the present disclosure, the through hole is a cylindrical hole.

According to the quantitative acidification instrument of at least one embodiment of the present disclosure, the through hole is a conical hole, and the diameter of the conical hole is gradually reduced along the direction from top to bottom.

According to the quantitative acid adding instrument of at least one embodiment of the present disclosure, the supporting piece is fixed to the upright post through a fixing component.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural view of a quantitative acid feeder according to one embodiment of the present disclosure.

Fig. 2 is a schematic view of another angle of a quantitative acid feeder according to one embodiment of the present disclosure.

Fig. 3 is a schematic view of a partial structure of a quantitative acid feeder according to one embodiment of the present disclosure.

Fig. 4 is a schematic structural view of a support according to one embodiment of the present disclosure.

Fig. 5 is a schematic structural view of a support according to another embodiment of the present disclosure.

The reference numbers in the figures are in particular:

100 quantitative acid adding instrument

110 weighing device

111 base

112 weighing tray

120 column

130 support piece

131 fixed part

132 support part

133 connecting part

134 via hole

135 receiving hole

140 filling pipe

150 fixed block

160 spring

170 peristaltic pump.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. Technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the illustrated exemplary embodiments/examples are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Thus, unless otherwise indicated, the features of the various embodiments/examples may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concept of the present disclosure.

The use of cross-hatching and/or shading in the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise noted, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality between the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in an order reverse to the order described. In addition, like reference numerals denote like parts.

When an element is referred to as being "on" or "over," "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For purposes of this disclosure, the term "connected" may refer to physically, electrically, etc., and may or may not have intermediate components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "under 8230; \8230;,"' under 8230; \8230; below 8230; under 8230; above, on, above 8230; higher "and" side (e.g., as in "side wall)", etc., to describe the relationship of one component to another (other) component as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "at 8230; \8230;" below "may encompass both an orientation of" above "and" below ". Further, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising" and variations thereof are used in this specification, the stated features, integers, steps, operations, elements, components and/or groups thereof are stated to be present but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.

Fig. 1 is a schematic structural view of a quantitative acid feeder 100 according to one embodiment of the present disclosure. Fig. 2 is a schematic view of another perspective of the quantitative acid adding apparatus 100 according to an embodiment of the present disclosure. Fig. 3 is a partial structural schematic diagram of a quantitative acid feeder 100 according to an embodiment of the present disclosure.

As shown in fig. 1 to 3, the quantitative acid adding instrument 100 of the present disclosure may include: weighing apparatus 110, upright 120, support 130, and filler tube 140.

The weighing device 110 includes a base 111 and a weighing tray 112 disposed on the base 111; the weighing tray 112 is used to weigh the mass of digestion tubes (not shown) placed on the weighing tray 112; it should be understood by those skilled in the art that the weighing device 110 may be formed as a tray scale or an electronic scale, etc. commonly used in the art, and based on this, the structure of the weighing device 110 will not be described in detail.

In use of the quantitative acid adding instrument 100 of the present disclosure, the weighing device 110 is placed on a horizontal surface in order to obtain accurate weighing results.

The upright 120 is fixed to the base 111 of the weighing apparatus 110 and enables the upright 120 to be vertically disposed; of course, it will be appreciated by those skilled in the art that the upright 120 may also be disposed at an angle so long as the support 130 mounted to the upright 120 is positioned above the weigh tray 112.

The support 130 is adjustably disposed on the upright 120 such that at least a portion of the support 130 is positioned directly above the weighing tray 112; that is, in actual use, the support 130 is adjustable in height relative to the weighing tray 112, taking into account the different heights of the digestion tubes.

At least a portion of the filler tube 140 is supported by the support 130 and liquid is added through the filler tube 140 into a digestion tube placed on the weigh tray 112.

Therefore, the weight of the acid liquor added into the digestion pipe can be accurately judged through the weighing device 110, the operation is convenient, and the stability is good. Acid is added for inorganic digestion, and the liquid adding speed and precision are both superior to manual liquid adding.

Fig. 4 is a schematic structural view of a support according to one embodiment of the present disclosure. Fig. 5 is a schematic structural view of a support according to another embodiment of the present disclosure.

As shown in fig. 4 and 5, in the present disclosure, the support 130 includes: a fixing portion 131, a supporting portion 132, and a connecting portion 133.

The fixing portion 131 is used for fixing the supporting member 130 to the upright post 120; in one embodiment, the fixing portion 131 may be formed in a ring shape, and the pillar 120 passes through the inside of the fixing portion 131. In one embodiment, the post 120 has at least one flat surface, for example, the cross-section of the post 120 may be racetrack.

Accordingly, the shape of the space surrounded by the fixing portion 131 is the same as the shape of the pillar 120, and when an external force is applied to the fixing portion 131, the fixing portion 131 can move up and down along the pillar 120.

The support 132 is used to support the filler tube 140; the connecting portion 133 is used to connect the fixing portion 131 and the supporting portion 132. That is, the support portion 132 is formed as a portion apart from the column 120, and the support portion 132 may be positioned right above the weighing tray 112 in actual use.

In the present disclosure, the fixing portion 131, the supporting portion 132, and the connecting portion 133 are integrally formed components.

In a preferred embodiment, as shown in fig. 4, the support portion 132 is arranged to be inclined downwardly in a direction away from the upright 120. More preferably, the angle between the supporting portion 132 and the upright 120 is 45 °.

As shown in fig. 4, a through hole 134 is formed on the support part 132, and one end of the filler tube 140 passes through the through hole 134 and is located outside the support part 132. Thereby, the filler tube 140 can be held by the support portion 132. In particular, the diameter of the through-hole 134 may be slightly smaller than the outer diameter of the filler tube 140, and at this time, the filler tube 140 may be stably held by deformation of the filler tube 140.

In the present disclosure, an included angle between the center line of the through hole 134 and the upright post 120 is 45 °; that is, the center line of the through hole 134 can form an angle of about 45 ° with the horizontal plane, and in this case, the filler tube 140 can also form an angle of about 45 ° with the horizontal plane, so that: when the fluid flow rate in the liquid feeding pipe 140 is large, namely high-speed liquid feeding, the liquid can flow into the digestion pipe along the pipe wall of the digestion pipe. When the flow rate of the fluid in the liquid adding pipe 140 is small, namely low-speed liquid adding, the liquid can drop into the digestion pipe one drop by one drop, so that the liquid can be prevented from splashing out of the pipe.

In a preferred embodiment, the through-hole 134 is a cylindrical hole, as shown in FIG. 4.

In another embodiment, as shown in fig. 5, the through hole 134 is a conical hole, the diameter of which is gradually reduced in the direction from top to bottom, and the inner diameter of the conical hole at the minimum diameter is smaller than the outer diameter of the filler tube 140, so that the filler tube 140 can be stably held by the support 130.

In the present disclosure, as shown in fig. 4 and 5, the supporting member 130 is fixed to the pillar 120 by a fixing assembly so that the supporting member 130 can be maintained at different heights. Wherein, the fixing component comprises a fixing block 150 and a spring 160.

In one embodiment, the support 130 is formed with a receiving hole 135, and in a preferred embodiment, the receiving hole 135 may be formed at the fixing part 131, and an opening of the receiving hole 135 faces an inner space of the fixing part 131 and communicates with the inner space of the fixing part 131.

A fixing block 150 is slidably disposed in the receiving hole 135, a spring 160 is disposed in the receiving hole 135, one end of the spring 160 abuts against the bottom wall of the receiving hole 135 (i.e., the wall surface of the receiving hole 135 away from the upright post 120), the other end of the spring 160 abuts against the fixing block 150, and the spring 160 is pre-compressed, so that the spring 160 can push the fixing block 150 towards the upright post 120, and a positive pressure is provided between the fixing block 150 and the upright post 120, so that a large friction force is provided between the supporting member 130 and the upright post 120, and the friction force can prevent the supporting member 130 from sliding downwards.

The quantitative acidification device of the present disclosure may further include a peristaltic pump 170, wherein the peristaltic pump 170 is connected to the feeding tube 140, so that the liquid pumped by the peristaltic pump 170 can be added to the digestion tube through the feeding tube 140.

Therefore, the peristaltic pump 170 of the present disclosure can achieve continuous infusion, and can achieve quantitative liquid feeding in combination with the weighing device 110.

When liquid is added, the digestion tube is placed on the weighing tray, and the mass sensor is arranged below the weighing tray, so that the quality detection of the digestion tube can be realized, and correspondingly, the quality detection of the liquid in the digestion tube can be realized according to the mass difference; the measuring range of the mass sensor is 0-1kg, and the precision is 0.1g, so that the precision of the whole quantitative acid adding instrument is superior to 0.2g, and the precision requirements of wet digestion and microwave digestion acid adding are met.

As the liquid adding range of laboratory digestion application is generally about 1-50mL, the flow rate of the peristaltic pump can reach 500mL/min at most. Due to the strong oxidizing property and the corrosiveness of the strong acid reagent, the liquid receiving material needs to be resistant to the reagent to be added. Therefore, the peristaltic pump tube adopts a double-layer acid-resistant hose, the liquid receiving pipeline adopts 1/8 inch PFA, and the joint and the like also adopt perfluoro materials.

Furthermore, the inlet of the peristaltic pump 170 may be connected to a plurality of liquid inlet lines, each liquid inlet line is controlled by a solenoid valve to be opened and closed, and when addition is required, the liquid inlet line is activated to be opened, and the other liquid inlet lines are closed.

In practical use, when the mass detected by the weighing device 110 exceeds a set value, the digestion tube is placed under the liquid adding port, and at the moment, the action of the peristaltic pump can be automatically controlled to realize liquid adding. And full-speed liquid feeding is carried out at the initial liquid feeding stage, and the speed is reduced to 50 percent of the maximum speed when the liquid is 90 percent of the preset value until the liquid feeding end point.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/modes or examples and features of the various embodiments/modes or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

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 at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims

1. A quantitative acid adding instrument is characterized by comprising:

the upright post is fixed on a base of the weighing device;

2. The quantitative acid dosing apparatus of claim 1, wherein the support member comprises:

a fixing portion for fixing a support member to the upright;

a support for supporting the filler tube; and

3. The quantitative acid adding instrument according to claim 2, wherein the supporting portion is provided to be inclined downward in a direction away from the pillar.

4. The quantitative acid adding instrument according to claim 3, wherein the angle between the supporting portion and the upright is 45 °.

5. The quantitative acid-adding instrument according to claim 3, wherein a through hole is formed on the support part, and one end of the liquid feeding tube passes through the through hole and is located outside the support part.

6. The quantitative acid feeder of claim 5, wherein the center line of the through hole makes an angle of 45 ° with the vertical column.

7. The quantitative acid adding instrument according to claim 5, wherein the through hole is a cylindrical hole.

8. The quantitative acid-adding instrument according to claim 5, wherein the through hole is a conical hole, and the diameter of the conical hole is gradually reduced along the direction from top to bottom.

9. The quantitative acid feeder of claim 1, wherein the support member is secured to the upright by a securing assembly.