CN218796062U - Practical adjustable test-tube rack - Google Patents

Abstract

The utility model provides an adjustable test-tube rack of practical type, it is including the test-tube rack main part and arrange the test tube lid frame near the test-tube rack main part in, the test-tube rack main part is including 2 perpendicular extension boards that the symmetry set up, and the upper and lower interval of polylith cross brace board is located 2 and is erected between the extension board, and the equipartition has a plurality of test tube jacks to be used for putting into the test tube on the cross brace board. Test tube lid frame is including 2 vertical support poles that the symmetry set up, locate the cross-support pole between 2 vertical support poles and the test tube lid on the cross-support pole is located in the activity, the cross-support pole is the cross-support board parallel arrangement of round bar, its and test tube rack main part, the test tube lid has the circular shape cap, is located cap one end axial region and is located the terminal arc hem portion of axial region, the arc hem portion activity of test tube lid overlaps on cross-support pole, makes the test tube lid can follow the cross-support pole and remove and rotate. The utility model discloses can adjust test-tube cover size and height according to the experiment needs, the especially adapted filtration isolated plant who stores fatty acid value survey in the quality testing as corn uses.

Description

Practical adjustable test-tube rack

Technical Field

The utility model belongs to the technical field of the experimental facilities technique and specifically relates to an adjustable test-tube rack of practical.

Background

In grain sample experiments, samples are usually placed in test tubes and placed on test tube racks. To ensure the reliability of the experimental results and the sufficiency of the sample reaction, the opening of the test tube needs to be sealed. For example, in the grain quality detection test related to the fatty acid value determination method in the rice storage quality determination rule of the national standard GB/T20569-2006, the fatty acid in the rice is extracted by absolute ethyl alcohol, and titration and calculation are performed. In the national standard a.4.2 is described: "\8230, a \8230, an \8230, a glass funnel is placed in a folding filter paper for filtration, fatty acid is extracted by adding absolute ethyl alcohol into a rice sample, filtrate mixed with the fatty acid and the absolute ethyl alcohol is separated from the rice sample by filtration, and in the filtration process, the glass funnel needs to be covered to avoid the volatilization of the absolute ethyl alcohol, so that the extracted fatty acid can be efficiently separated from the rice sample. The practical operation requirements of the fatty acid value determination are explicitly recorded on pages 107 to 109 of a manual for vocational operation skill examination of grain and oil quality inspectors, wherein the page 109 of the distribution and scoring standard of (III) is that 4 points are not covered in the filtering process of (3), and the filtering step is also explicitly proposed that the covering operation is required in the practical operation, otherwise, the points are covered. And the funnel that uses among the current filtering operation process usually lacks supporting lid, and during actual operation, the experimenter need dispose glass apron or filter paper in addition and cover the test tube, uses and accomodates inconveniently, and the experimenter can also forget to cover the lid many times, can influence the accuracy that fatty acid detected like this, consequently needs to improve.

Disclosure of Invention

The utility model aims at providing an adjustable test-tube rack of practical, a structure is simple, high durability and convenient use, and can adjust the size and the height of test tube lid according to actual experiment needs, it is nimble practical, the funnel of placing on cooperation test tube and the test tube is used, can conveniently carry out the closing cap to the funnel of unidimensional not, with satisfy the experimental requirement of solid-liquid separation who contains volatile materials, especially, it adds the operating requirement to cover to be fit for filtering step in the real operation of grain sample fatty acid value survey, be fit for storing the special device of filtration of fatty acid value survey in the quality detection as corn and use, and then effectively improve fatty acid value survey efficiency and accuracy.

The utility model discloses a purpose accessible is realized through following technical scheme:

the utility model provides an adjustable test-tube rack of practical, its is including the test-tube rack main part, the test-tube rack main part is including 2 perpendicular extension boards that the symmetry set up, and the interval is located 2 on the horizontal extension board of polylith and is erected between the extension board, and the equipartition has a plurality of test tube jacks to be used for putting into the test tube on the horizontal extension board. The utility model discloses adjustable test-tube rack is still including arranging test tube cover frame near the test-tube rack main part in, test tube cover frame is including 2 perpendicular branches that the symmetry set up, locate 2 horizontal supporting poles between perpendicular branch and the activity locate the test tube cover on the horizontal supporting pole, horizontal supporting pole is round bar, its horizontal supporting pole parallel arrangement with the test-tube rack main part, the test tube cover has the circular shape cap, is located cap one end axial region and is located the terminal arc hem portion of axial region, the arc hem portion movable sleeve of test tube cover on horizontal supporting pole, makes the test tube cover can follow the horizontal supporting pole and remove and rotate.

Preferably, the vertical support rod is of a screw rod structure with threads on the outer wall, sleeve portions movably sleeved on the vertical support rod are arranged at two ends of the transverse support rod, adjusting nuts are connected to the lower portions of the sleeve portions on the vertical support rod through threads, and the height of the transverse support rod can be adjusted by rotating the adjusting nuts.

Preferably, the test tube cover is including from top to bottom concentric small-size lid, medium-size ring cap and the large-size ring cap that sets up in proper order, and the small-size lid is circular plate structure, and medium-size ring cap and large-size ring cap are the annular plate structure, and the outward flange of small-size lid is taken on the inward flange of medium-size ring cap, and the outward flange of medium-size ring cap is taken on the inward flange of large-size ring cap.

The utility model has the following substantive characteristics and progress:

1. the utility model discloses an adjustable test-tube rack of practical, it is through the horizontal branch pole of configuration and test-tube rack main part parallel on test tube lid frame, and horizontal branch pole removal and pivoted test tube lid can be followed to the configuration on the horizontal branch pole for can facilitate the use lid seal on the test-tube rack, need not the experimenter and look for other additional equipment in addition, it is convenient to use, can effectively promote convenience and the high efficiency of operation in the test process.

2. The utility model discloses an adjustable test-tube rack of practical, it is through configuration adjusting nut on the perpendicular branch of test tube lid frame for rotate the height that adjusting nut can adjust the cross-bar pole, with the test-tube rack that supports multiple high difference, and further cover the concentric small-size lid that sets up, medium-size ring cap and large-size ring cap through the test tube and constitute three kinds of not unidimensional lids, with test tube and funnel that support multiple size and differ, strong adaptability, the flexibility is high, and the use scene is wide.

3. The utility model discloses an adjustable test-tube rack of practical type is particularly suitable for being applied to grain sample fatty acid value survey filtering step in actually operating and adds the operating requirement that adds to effectively avoiding volatilizing of absolute ethyl alcohol extract product in this filtering process, effectively improving the survey efficiency and the accuracy of fatty acid value, be fit for storing the filtration isolated plant of fatty acid value survey in the quality testing as corn and use.

Drawings

Fig. 1 is a schematic view of the utility model showing the using state of the adjustable test tube rack.

Fig. 2 is a schematic structural view of the middle test tube cap holder of the present invention.

Fig. 3 is a top view of the test tube cap holder of the present invention.

Fig. 4 is the structure schematic diagram of the small-size cover, the medium-size ring cover and the large-size ring cover of the pilot tube cover of the utility model.

Fig. 5 is a combination schematic diagram of the small-size cover, the medium-size ring cover and the large-size ring cover of the pilot tube cover of the utility model.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Examples

As shown in fig. 1 and 2, the utility model relates to an adjustable test tube rack, which comprises a main body 1 of the test tube rack, and a test tube cover frame 2 arranged near the main body 1 of the test tube rack. Test-tube rack main part 1 is including 2 vertical extension boards 10 that the symmetry set up, and the upper and lower interval of polylith horizontal extension board 11 is located 2 and is erected between the extension board 10, and the equipartition has a plurality of test tube jacks to be used for putting into the test tube on the horizontal extension board 11, can hold reagent in the test tube.

The test tube cover rack 2 comprises 2 vertical supporting rods 20 symmetrically arranged, transverse supporting rods 21 arranged between the 2 vertical supporting rods 20 and a test tube cover 22 movably arranged on the transverse supporting rods 21, wherein the transverse supporting rods 21 are circular rods and are arranged in parallel with the transverse supporting plates 11 of the test tube rack main body 1. The vertical supporting rod 20 is a screw rod structure with threads on the outer wall, sleeve portions 210 movably sleeved on the vertical supporting rod 20 are arranged at two ends of the horizontal supporting rod 21, adjusting nuts 200 are connected to the lower threads of the sleeve portions 210 on the vertical supporting rod 20, and the height of the horizontal supporting rod 21 can be adjusted by rotating the adjusting nuts 200.

As shown in fig. 4 and 5, the test tube cover 22 has a circular cover portion, a shaft portion located at one end of the cover portion, and an arc-shaped flange portion located at the end of the shaft portion, and the arc-shaped flange portion of the test tube cover 22 is movably sleeved on the cross bar 21 so that the test tube cover 22 can move and rotate along the cross bar 21. The test tube cover 22 comprises a small-size cover 23, a medium-size ring cover 24 and a large-size ring cover 25 which are sequentially and concentrically arranged from top to bottom, the small-size cover 23 is of a circular plate structure, and the medium-size ring cover 24 and the large-size ring cover 25 are of annular plate structures. The middle part of the middle ring cover 24 is provided with a hole slightly larger than the circular size of the small cover 23, the outer edge of the small cover 23 is overlapped on the inner edge of the middle ring cover 24, and the small cover 23 and the middle ring cover 24 are combined into the middle cover for use. The middle part of the large-size ring cover 25 is provided with a hole slightly larger than the size of the medium-size ring cover 24, the outer edge of the medium-size ring cover 24 is overlapped on the inner edge of the large-size ring cover 25, and the large-size ring cover 25, the medium-size ring cover 24 and the small-size ring cover 23 are jointly combined into a large-size cover for use.

The utility model discloses when using, all placed funnel 3 on a plurality of test tubes on the horizontal extension board 11 of test-tube rack main part 1, put into filter paper (not shown in the figure) in funnel 3 and be arranged in the filtration operation in the fatty acid number measuring method. The sleeve part 210 fixedly connected with the transverse strut 21 is movably sleeved on the vertical strut 20, and the adjusting nut 200 is rotated to adjust the height of the transverse strut 21 so that the transverse strut 21 is flush with the height of the funnel 3. When the liquid in the filter paper is not completely filtered in the filtering process, the small-size cover 23, the medium-size cover and the large-size cover are covered by the covers matched with the caliber of the funnel in size. As shown in figure 3, the funnel 3 is covered by a cover of a middle cover, the middle cover consisting of a small cover 23 and a middle ring cover 24 is covered on the funnel 3, and a large ring cover 25 which is not needed to be used is turned backwards and is arranged at the back of the test tube, as shown in figure 1. After the liquid in one funnel 3 is filtered, the corresponding test tube cover 22 is turned over, and the filtrate collected in the test tube is taken for the next determination step.

Claims (3)

1. The utility model provides an adjustable test-tube rack of practical, its is including test-tube rack main part (1), 2 blocks of test-tube rack main part (1) including the symmetry setting erect extension board (10), and the upper and lower interval of polylith horizontal extension board (11) is located 2 blocks and is erected between extension board (10), and the equipartition has a plurality of test tube jacks to be used for putting into test tube, its characterized in that on horizontal extension board (11): still including arranging test tube lid frame (2) near test tube rack main part (1) in, test tube lid frame (2) are including 2 vertical support pole (20) that the symmetry set up, locate horizontal support pole (21) between 2 vertical support pole (20) and activity locate test tube lid (22) on horizontal support pole (21), horizontal support pole (21) are circular pole, its horizontal support pole (11) parallel arrangement with test tube rack main part (1), test tube lid (22) have the circular shape cap, be located cap one end axial region and be located the terminal arc hem portion of axial region, the arc hem portion movable sleeve of test tube lid (22) on horizontal support pole (21), make test tube lid (22) can follow horizontal support pole (21) and remove and rotate.

2. The utility model discloses an adjustable test-tube rack of utility type according to claim 1, its characterized in that: the vertical supporting rod (20) is of a screw rod structure with threads on the outer wall, sleeve portions (210) movably sleeved on the vertical supporting rod (20) are arranged at two ends of the transverse supporting rod (21), adjusting nuts (200) are connected to the lower threads of the sleeve portions (210) on the vertical supporting rod (20), and the height of the transverse supporting rod (21) can be adjusted by rotating the adjusting nuts (200).

3. A practical adjustable test tube rack according to claim 1 or 2, characterized in that: test tube lid (22) is including from top to bottom in proper order concentric small size lid (23), medium size ring cap (24) and large size ring cap (25) that set up, and small size lid (23) are the circular slab structure, and medium size ring cap (24) and large size ring cap (25) are the annular slab structure, and the outward flange of small size lid (23) is taken on the inward flange of medium size ring cap (24), and the outward flange of medium size ring cap (24) is taken on the inward flange of large size ring cap (25).

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