Stirring device for analysis and detection

Abstract

The utility model discloses a stirring device for analysis and detection, which comprises a pipe frame, a sample container, a stirring rod, a shifting piece and a fixing plate, wherein a plurality of mounting holes communicated with a cavity are formed in the top surface of the pipe frame; the sample container is assembled in the mounting hole; the fixing plate is located above the sample container and connected with stirring rods matched with the mounting holes in number, the upper ends of the stirring rods are fixedly connected with the fixing plate, and the stirring pieces are fixed to the lower ends of the stirring rods and extend into the sample container. The device has the advantages of being low in improvement cost, wide in application range, capable of meeting different detection requirements and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to laboratory detection equipment technical field, especially a kind of stirring device for analysis and detection. BACKGROUND

[0002] In laboratory detection process, stirring operation is one of important methods for mixing sample. Stirring operation can be completed by manual, magnetic stirrer or constant-temperature stirrer. Manual stirring operation is simple, and is not easily affected by detection condition, but only one sample can be stirred at a time, and efficiency is low, so it is difficult to meet the detection requirement of batch sample. Magnetic stirrer and constant-temperature stirrer replace manual stirring, improve stirring efficiency to a certain extent, save time and effort, and have high detection efficiency. However, for detection projects with special stirring requirements, such as inorganic phosphorus and soil extractable iron, aluminum and manganese, continuous stirring is required under 80 DEG C water bath condition. Magnetic stirrer does not have temperature control function, so it does not meet the detection requirement. Constant-temperature stirrer can stir under constant-temperature condition, but it needs certain cost to purchase, and there are limited laboratories with this instrument, which limits its popularization and use in laboratory.

[0003] Stirring temperature and continuous stirring in the detection process of inorganic phosphorus and soil extractable iron, aluminum and manganese are important factors affecting detection accuracy. Manual stirring can meet the detection requirement, but its efficiency is low, and it is difficult to complete batch sample detection and analysis. Inorganic phosphorus and soil extractable iron, aluminum and manganese are important contents of soil science research, and the above conditions slow down the detection progress, cannot provide data in time, and seriously affect the development of related research.

[0004] In the currently disclosed stirring device, motor drives stirrer to rotate to realize stirring. Although this kind of stirring device has high stirring efficiency, it has the disadvantages of high stirring cost and unable to control temperature, so it is difficult to meet the detection requirement of laboratory.

[0005] The disclosure of the above background technology content is only used to assist understanding of the concept and technical scheme of the utility model, and it does not necessarily belong to the prior art of the present patent application. In the absence of explicit evidence that the above content has been disclosed on the filing date of the present patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application. UTILITY MODEL CONTENT

[0006] The utility model mainly aims at providing a stirring device for analysis and detection, which has low modification cost, wide application range and can meet different detection requirements.

[0007] Therefore, the utility model provides a stirring device for analysis and detection.

[0008] Preferably, the utility model can also have the following technical features:

[0009] The utility model relates to an agitating device for analysis and detection, including pipe frame, sample container, stirring rod, paddle, fixed plate, the top surface of pipe frame is arranged with a plurality of installation hole that communicates the cavity, the sample container is assembled in the installation hole, the fixed plate is located the above of sample container, its connection has and the matching stirring rod of installation hole number, the upper end of stirring rod is connected with fixed plate and is fixed, the lower end is fixed with the paddle, and extends to the sample container.

[0010] Further, the paddle is a round piece.

[0011] Further, the diameter of the paddle is 6-10mm smaller than the diameter of the sample container.

[0012] Further, the pipe frame is a box structure, which is internally provided with a cavity, the connecting hole is communicated with the cavity,

[0013] Further, the center of the installation hole, the stirring rod and the paddle is coaxial.

[0014] Further, the paddle is fixed on the stirring rod by glue or clamping.

[0015] Further, the stirring rod is a glass rod.

[0016] Further, a handle is installed on the upper side of the fixed plate.

[0017] Further, a coupling plate is further included to connect and combine two groups of the agitating device.

[0018] Further, a water bath is further included, a plurality of through holes are formed around the pipe frame and communicated with the cavity of the pipe frame, and the pipe frame is placed in the water bath.

[0019] The beneficial effects of the utility model compared with the prior art include: when using, the agitating device is assembled according to requirements, including fixing the sample container in the installation hole by interference fit or clamping, and the lower part of the sample container extends into the cavity; then the paddle is horizontally installed at the lower end of the stirring rod and is perpendicular to the stirring rod; the upper end of the stirring rod is fixed in the positioning hole, so that the stirring rod is vertically fixed to the fixed plate; a sufficient amount of sample is added to each sample container, and then the lower part of the stirring rod extends into the stirring container, and the paddle is driven up and down by the up-and-down movable fixed plate to stir the sample. By reasonably controlling the gap, the activity amplitude and speed of the paddle, the sample can be effectively prevented from splashing during stirring. The temperature is adjusted by using the water bath to meet the detection requirements. The ammonium acetate method can be used to determine the soil cation exchange capacity, soil extractable iron, aluminum and manganese, and soil inorganic phosphorus and other multiple items, so that the application range is wide and the improvement cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1It is the structure schematic view of the utility model, the figure is to show water bath.

[0021] Fig. 2 It is the stirring rod connection schematic view of the utility model.

[0022] Fig. 3 It is the coupling plate installation schematic view of the utility model. DETAILED DESCRIPTION

[0023] The utility model will be further explained in detail in combination with specific implementation manners and by referring to the drawings.It should be emphasized that the following description is only exemplary and is not intended to limit the scope of the utility model and its applications.

[0024] With reference to the following drawings, non-limiting and non-exclusive embodiments will be described, in which the same reference numerals denote the same parts, unless otherwise specifically indicated.

[0025] As Figs. 1-3 The utility model discloses a stirring device for analysis and detection, including pipe support 1, sample container 2, stirring rod 3, paddle 7, fixed plate 4, the pipe support 1 is the box structure, is equipped with the cavity in it, and the top surface is arranged with a plurality of installation hole that communicates the cavity, the sample container 2 is assembled in the installation hole, the fixed plate 4 is opened with the positioning hole 41 that the installation hole number matches, the upper end of stirring rod 3 is installed in the positioning hole 41, and the lower end is fixed with paddle 7, the paddle 7 is the round sheet of plastic material. When using, the stirring device is assembled according to the requirement, including the sample container 2 is fixed in the installation hole by interference fit or clamping, and the lower part of sample container 2 is inserted into the cavity, then paddle 7 is horizontally installed at the lower end of stirring rod 3, and is perpendicular to stirring rod 3, then the upper end of stirring rod 3 is fixed in the positioning hole 41, so that stirring rod 3 is perpendicular to fixed plate 4, and enough sample is added to each sample container 2, then the lower part of stirring rod 3 is inserted into the stirring container 2, and stirring sample is realized by driving paddle 7 up and down through the up and down movement of fixed plate 4. The sample container is a centrifugal tube, such as 50ml centrifugal tube. The upper part of stirring rod 3 can be out of the upper side of fixed plate 4, or can be flush with the upper side of fixed plate 4, and the length of the rod body of stirring rod 3 below fixed plate 4 is greater than or equal to the height of sample container 2.

[0026] Specifically, the center of the installation hole, stirring rod 3, paddle 7 and positioning hole 41 is coaxial. In this way, when soil samples are placed in sample containers for detection and treatment, not only can the stirring uniformity of a single sample container 2 be ensured, but also the stirring uniformity of each sample in the same batch can be improved.

[0027] In a more specific embodiment, the diameter of the stirring paddle 7 is 6-10 mm smaller than the diameter of the sample container, and after the sample is added to the sample container 2, the liquid level of the sample is half or less than half of the height of the sample container 2. When stirring, the amplitude of the up-and-down movement of the stirring paddle 7 is reasonably controlled; when the stirring paddle 7 reaches the top surface of the sample liquid or just leaves the sample liquid, the stirring paddle 7 starts to move downward, and this process is repeated to achieve the stirring effect. By reasonably controlling the gap, the amplitude and speed of the movement of the stirring paddle 7, the splashing of the sample during stirring can be effectively prevented.

[0028] The stirring paddle 7 is fixed on the stirring rod 3 by means of glue, clamping, etc., and the stirring rod 3 is a glass rod. The upper end of the stirring rod 3 is fixed in the positioning hole 41 to prevent the stirring rod 3 from swinging during stirring. For example, a sleeve is combined with the middle part of the stirring paddle 7, the sleeve tightly wraps the stirring rod 3 to achieve connection, and at the same time, glue is applied to the joint surface of the sleeve and the stirring rod 3 to reinforce the connection, or a sleeve made of soft material, such as a hose, is used, and a bandage is arranged on the outside of the hose to tightly tie the hose on the stirring rod 3.

[0029] Preferably, a handle is arranged on the upper side of the fixing plate for easy holding. During operation, the fixing plate is pulled up and down by holding the handle.

[0030] Combination Fig. 3 To further improve the stirring efficiency, a coupling plate 8 is designed to connect and combine two groups of the stirring device, so that two groups of the stirring device can be operated at the same time to improve the number of single stirring. Specifically, the coupling plate 8 is further included, and the left part and the right part of the coupling plate 8 are respectively fixedly connected with the fixing plates 4 of one group of the stirring device. For example, four connecting columns 5 are designed, the upper ends of the four connecting columns 5 are fixed at the four corners of the coupling plate 8, and two corresponding assembly holes are respectively arranged on the fixing plates 4 of the two groups of the stirring device to connect and butt against the connecting columns 5, so that the lower ends of the connecting columns 5 are fixedly connected with the fixing plates 4. In this way, the two groups of the stirring device can be connected as a whole to improve the stirring efficiency. Moreover, the coupling plate 8 is located between the handles 6 of the two groups of the stirring device to prevent the coupling plate 8 from interfering with the holding of the handles 6 by the operator. For example, one group of the stirring device is installed with 21 sample containers 2, and after the combination of the two groups, 42 sample containers 2 can be stirred at a time, and the working efficiency is significantly improved. More specifically, one of the optional connection modes of the connecting column 5 and the fixing plate 4 and the coupling plate 8 is that the connecting column 5 is designed as a stepped column structure with a large middle part and small ends, and the fixing plate 4 and the coupling plate 8 are connected and fixed by means of nuts, which is convenient to disassemble and assemble and flexible to apply.

[0031] The water bath is also included, and the pipe frame 1 is provided with a plurality of through holes 11 which are communicated with the cavity of the pipe frame. When the constant temperature condition is needed, the pipe frame 1 is placed in the water bath, the warm water enters the cavity through the through holes 11 and contacts with the outside of the sample container 2, and the temperature is adjusted by the water bath to meet the detection requirement. The water bath is the existing product.

[0032] Those skilled in the art will recognize that numerous modifications can be made to the above description while still falling within the scope of the application.

[0033] While there have been described herein the discloses embodiments of the present application, various modifications can be made to this application without departing from the spirit of the application. Additionally, many modifications can be made to adapt a particular situation to the teachings of the present application without departing from the central concept of the application. Accordingly, the present application is not limited to the embodiments described herein, but can be practiced with the scope of the claims and their equivalents.

Claims

1. A stirring device for analysis and detection, characterized in that: The device includes a tube frame, a sample container, a stirring rod, a paddle, and a fixing plate. The top surface of the tube frame has several mounting holes that communicate with the cavity. The sample container is assembled in the mounting holes. The fixing plate is located above the sample container and is connected to a stirring rod with a number matching the number of mounting holes. The upper end of the stirring rod is connected and fixed to the fixing plate, and the lower end is fixed with the paddle, which extends into the sample container.

2. The stirring device for analysis and detection as described in claim 1, characterized in that: The paddle is a round piece.

3. The stirring device for analysis and detection as described in claim 2, characterized in that: The diameter of the paddle is 6-10 mm smaller than the diameter of the sample container.

4. The stirring device for analysis and detection as described in claim 1, characterized in that: The pipe rack has a box-like structure with an internal cavity, and the connecting hole communicates with the cavity.

5. The stirring device for analysis and detection as described in claim 1, characterized in that: The mounting hole, stirring rod, and paddle are all coaxial.

6. The stirring device for analysis and detection as described in claim 1, characterized in that: The paddle is fixed to the stirring rod by glue or clamping.

7. The stirring device for analysis and detection as described in claim 1, characterized in that: The stirring rod is a glass rod.

8. The stirring device for analysis and detection as described in claim 1, characterized in that: A handle is mounted on the upper side of the fixing plate.

9. The stirring device for analysis and detection as described in claim 1, characterized in that: It also includes a connecting plate to connect and merge the two sets of the stirring devices.

10. The stirring apparatus for analysis and detection as described in claim 1, characterized in that: It also includes a water bath, and the tube rack has several through holes around its perimeter that connect to the tube rack cavity; the tube rack is placed inside the water bath.

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