Evaporation and concentration device for laboratory

Abstract

The utility model provides an evaporation concentration device for a laboratory, which comprises a horizontally arranged base, the base is fixedly connected with a vertically arranged vertical support rod, and the vertical support rod is connected with a transverse telescopic rod II, a support plate and a transverse telescopic rod I sequentially from bottom to top through a knob III, a knob I and a knob II; a heating groove for containing a heating device is fixedly formed in the end, away from the vertical supporting rod, of the supporting plate. An annular beaker placing groove for placing a beaker is fixed at one end, far away from the vertical support rod, of the transverse telescopic rod I; an elastic clamp is arranged at the end, away from the vertical supporting rod, of the transverse telescopic rod II and connected with a glass guide pipe II, the upper end of the glass guide pipe II is connected with a condensing device, the upper end of the condensing device is connected with a glass guide pipe I, and the other end of the glass guide pipe I is fixedly connected with a conical steam cover.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of experimental apparatus for chemical analysis, in particular to a laboratory evaporation and concentration device. BACKGROUND

[0002] In laboratory work, when detecting trace components in sample test solution, the test solution usually needs to be pretreated to ensure that the sample meets the instrument requirements when entering the instrument for testing, avoid pollution or damage to the instrument, and reduce test interference. Because the metal impurity content in most high-purity reagents is very low, usually lower than the detection lower limit of the instrument, the impurities in the test solution must be concentrated and enriched to meet the instrument detection requirements.

[0003] For sample solutions containing high-concentration hydrogen chloride matrix (for example, when detecting trace anions such as sulfate impurities and metal impurities such as lead, magnesium, zinc, copper, etc. in various hydrochloric acids), when the test solution enters the instrument (such as ion chromatograph, inductively coupled plasma mass spectrometer, etc.) for analysis, the high salinity and high chlorine matrix in the test solution often interfere with the instrument operation, pollute the instrument pipeline, reduce the service life of the detector, and affect the accuracy of the detection result. Therefore, in order to ensure the accuracy of the test result, the sample test solution needs to be effectively pretreated.

[0004] Evaporation and concentration technology usually utilizes the boiling point difference of different components, and through heating, the high-concentration hydrogen chloride component in the test solution (when the temperature rises above 40℃, hydrogen chloride gas will volatilize from the hydrochloric acid solution) is evaporated. Subsequently, the treated sample is rinsed and dissolved with pure water, which maximizes the retention of heavy metal ions and non-metal components with higher boiling points in the test solution, thereby concentrating trace components. During this process, the acidity of the test solution can also be effectively reduced, and the pH value of the solution can be adjusted. Therefore, evaporation and concentration method has been widely used in sample pretreatment experiments.

[0005] In summary, how to effectively remove high chlorine (hydrogen chloride) matrix from the test solution, concentrate trace components and ensure that the instrument is not damaged during the pretreatment process has become a technical problem that needs to be solved. CONTENT OF THE INVENTION

[0006] In order to overcome a series of defects existing in the prior art, the utility model discloses a laboratory evaporation concentration device, which is characterized by comprising a horizontally arranged base 1, a vertically arranged vertical support 2 is fixedly connected to the base 1, the vertical support 2 is sequentially connected with a horizontal telescopic rod II 16, a support plate 3 and a horizontal telescopic rod I 7 from bottom to top through a knob III 6-3, a knob I 6-1 and a knob II 6-2, the support plate 3 is fixedly provided with a heating recess 4 for placing a heating device 5 at one end away from the vertical support 2, one end of the horizontal telescopic rod I 7 away from the vertical support 2 is fixedly provided with an annular cup placing recess 9-1 for placing a beaker, one end of the horizontal telescopic rod II 16 away from the vertical support 2 is provided with a tension clamp 17, a glass conduit II is connected to the tension clamp 17, the upper end of the glass conduit II is connected with a condensing device 13, the upper end of the condensing device 13 is connected with a glass conduit I 12, and the other end of the glass conduit I 12 is fixedly connected with a conical steam cover 11.

[0007] Further, the top end face of the base 1 is further provided with a gasket 19 for placing a liquid receiving bottle 18.

[0008] Further, the condensing device 13 is provided with a water inlet 14 and a water outlet 15.

[0009] Further, the base 1, the horizontal telescopic rod II 16, the support plate 3 and the horizontal telescopic rod I 7 are arranged in parallel with each other.

[0010] Further, the middle part of the horizontal telescopic rod I 7 is provided with an adjusting valve I 8-1, and the middle part of the horizontal telescopic rod II 16 is provided with an adjusting valve II 8-2.

[0011] Further, the annular cup placing recess 9-1 is provided with an annular inner ring 9-2, and the edge of the annular cup placing recess 9-1 is provided with a note card slot 10 for recording sample data; the diameter of the annular cup placing recess 9-1 is 10 cm.

[0012] Further, the support plate 3, the vertical support 2, the horizontal telescopic rod I 7 and the horizontal telescopic rod II 16 are all made of stainless steel coated with polyether ether ketone.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model provides a kind of high-efficiency, environmental protection and energy-saving laboratory evaporation concentration device, can process multiple samples simultaneously, optimize experimental operation process, improve experimental precision, reduce the influence to environment and instrument BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a structural schematic view of the utility model laboratory evaporation concentration device;

[0016] Fig. 2 Figure 1 is a schematic view of a laboratory evaporation concentration device - annular cup placing groove structure of the present application;

[0017] In the figure:

[0018] 1, base; 2, vertical support rod; 3, support plate; 4, heating groove; 5, heating device; 6-1, knob I; 6-2, knob II; 6-3, knob III; 7, horizontal telescopic rod I; 8-1, adjusting valve I; 8-2, adjusting valve II; 9-1, annular cup placing groove; 9-2, annular inner ring; 10, note card slot; 11, conical steam cover; 12, glass conduit I; 13, condensing device; 14, water inlet; 15, water outlet; 16, horizontal telescopic rod II; 17, tension clamp; 18, liquid collection bottle; 19, gasket. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiments of the present application will be described in more detail below with reference to the drawings of the embodiments of the present application. In the drawings, the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, not all of the embodiments.

[0020] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0021] The embodiments described below with reference to the drawings and the directional words are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0022] In a broad embodiment of the present application, a laboratory evaporation concentration device comprises a horizontally arranged base 1, a vertically arranged vertical support rod 2 fixedly connected to the base 1, a horizontal telescopic rod II 16, a support plate 3 and a horizontal telescopic rod I 7 connected to the vertical support rod 2 from bottom to top in sequence through a knob III 6-3, a knob I 6-1 and a knob II 6-2; the support plate 3 is fixedly provided with a heating groove 4 for placing a heating device 5 at an end away from the vertical support rod 2; the horizontal telescopic rod I 7 is fixedly provided with an annular cup placing groove 9-1 for placing a beaker at an end away from the vertical support rod 2; the horizontal telescopic rod II 16 is provided with a tension clamp 17 at an end away from the vertical support rod 2, a glass conduit II is connected to the tension clamp 17, an upper end of the glass conduit II is connected to a condensing device 13, an upper end of the condensing device 13 is connected to a glass conduit I 12, and the other end of the glass conduit I 12 is fixedly connected to a conical steam cover 11.

[0023] Further, the top end surface of the base 1 is provided with a gasket 19 for placing a liquid collection bottle 18.

[0024] Further, the condensing device 13 is provided with a water inlet 14 and a water outlet 15.

[0025] Further, the base 1, the transverse telescopic rod II 16, the support plate 3 and the transverse telescopic rod I 7 are arranged in parallel with each other.

[0026] Further, the middle part of the transverse telescopic rod I 7 is provided with an adjusting valve I 8-1, and the middle part of the transverse telescopic rod II 16 is provided with an adjusting valve II 8-2.

[0027] Further, the annular cup placing groove 9-1 is provided with an annular inner ring 9-2, and the edge of the annular cup placing groove 9-1 is provided with a note card slot 10 for recording sample data; the diameter of the annular cup placing groove 9-1 is 10 cm.

[0028] Further, the support plate 3, the vertical support rod 2, the transverse telescopic rod I 7 and the transverse telescopic rod II 16 are made of stainless steel coated with polyether ether ketone.

[0029] The preferred embodiments of the present application will be further described below in conjunction with the accompanying drawings.

[0030] Please refer to the example Figs. 1-2The laboratory evaporation concentration device of the embodiment comprises: the device is mainly divided into left and right parts, and is divided into two functional areas of sample liquid evaporation concentration and waste liquid collection. The direction from the left side to the right side is the horizontal direction, and the direction from the upper side to the lower side is the vertical direction. The functional area of the left part of the device is sample liquid evaporation concentration. The high-chlorine (hydrogen chloride) components in the sample liquid are evaporated away by heating, so that the target components (trace metal ions or anions to be measured) in the sample after water washing treatment are concentrated. The device comprises a base 1, a vertical support rod 2, a support plate 3, a heating groove 4 fixedly arranged on the support plate 3, a heating device 5 (a heating furnace or a heating sleeve) stably arranged in the heating groove 4, the support plate 3 is horizontally arranged, a knob I 6-1 is arranged at the connection position of the support plate 3 and the vertical support rod 2, a horizontal telescopic rod I 7 is connected to the vertical support rod 2, an adjusting valve I 8-1 is arranged at the middle part of the horizontal telescopic rod I 7, the adjusting valve I 8-1 is used for adjusting the telescopic length of the horizontal telescopic rod I 7, a knob II 6-2 is arranged at the connection position of the horizontal telescopic rod I 7 and the vertical support rod 2, a ring-shaped cup-arranging groove 9-1 is fixedly arranged at the other end of the horizontal telescopic rod I 7, a ring-shaped inner ring 9-2 is arranged in the ring-shaped cup-arranging groove 9-1, the ring-shaped cup-arranging groove 9-1 is used for stably arranging a beaker containing sample liquid, a label card groove 10 is arranged at the edge of the ring-shaped cup-arranging groove 9-1, and the label card groove 10 is used for recording sample data, a conical steam cover 11 is arranged above the beaker, the conical steam cover 11 is used for collecting evaporated gas and reducing diffusion, a glass pipe I 12 is connected to the conical steam cover 11, the other end of the glass pipe I 12 is connected to a condensing device 13 (a condenser pipe or a condenser), the condensing device 13 is provided with a water inlet 14 and a water outlet 15, the condensing device 13 is connected to a liquid collecting bottle 18, and the liquid collecting bottle 18 is stably arranged on a gasket 19 of the base 1. A horizontal telescopic rod II 16 is arranged on the vertical support rod 2, a tension clamp 17 is arranged at the other end of the horizontal telescopic rod II 16, and the tension clamp 17 is used for fixing a glass pipe II. The vertical support rod 2 is fixedly connected to the base 1, the knob I 6-1, the knob II 6-2 and a knob III 6-3 can respectively rotate the support plate 3, the horizontal telescopic rod I 7 and the horizontal telescopic rod II 16 around the vertical support rod 2, and the angle of the beaker is adjusted. When the sample liquid is evaporated and concentrated, the device is stably arranged on a horizontal experiment table, and the device is stably fixed to facilitate experimental operation.

[0031] Please refer to the example Figs. 1-2 The sample liquid to be evaporated and concentrated is poured into the beaker, the beaker is stably arranged in the ring-shaped cup-arranging groove 9-1, and the sample information is marked in the label card groove 10. The heating device 5 is opened, and sub-boiling or micro-boiling distillation heating concentration is performed. During the heating process, the steam containing the high-chlorine component is collected in the upper steam collection cover 11, is introduced into the condensing device 13 through the glass pipe I 12, and is liquefied and condensed. The waste liquid flows out from the lower end of the glass pipe II and is collected in the waste liquid collecting bottle 18, and the liquid collecting bottle 18 is stably arranged on the gasket 19 of the lower base, so that the liquid surface is observed.

[0032] Please refer to Figs. 1-2 , the base 1, the transverse telescopic rod II 16 and the transverse telescopic rod I 7 are parallel to each other, the knob I 6-1, the knob II 6-2, the knob III 6-3 can make the support plate 3, the transverse telescopic rod I 7, the transverse telescopic rod II 16 rotate left and right respectively, so that the beaker is aligned with the center part of the conical steam cover 11 above it, facilitating experimental control.

[0033] Please refer to Figs. 1-2 After the sample solution is heated and concentrated, the bottom of the beaker is almost evaporated, the heating device 5 is turned off, the rotary valve I 8-1 is rotated after the room temperature is restored, the beaker is taken out, a certain amount of pure water is added to flush the bottom and wall of the beaker, and the solution after flushing is transferred into a volumetric flask or a sample tube for next step analysis and test. When there are more sample solutions to be processed, the above operation can be repeated to perform multiple control experiments, which is convenient for comparison and improves accuracy. According to the need, the waste liquid collecting bottle 18 can store the outflow liquid for a short period of time.

[0034] The utility model relates to a kind of evaporation concentration devices for laboratory, horizontal vertical support 2, transverse telescopic rod I 7 and transverse telescopic rod II 16 are all made of stainless steel, covered with polyether ether ketone outside, can prevent solution corrosion, reinforce stability;Cup recess 9-1 diameter is 10 centimeters, can place beaker capacity 100-500 milliliter.

[0035] Through the use of the device, the high chlorine component in the sample solution is evaporated by heating, the trace component in the concentrated solution is dissolved by pure water, and the next step analysis test is carried out. Multiple sample solution units can be processed simultaneously, evaporation and concentration work can be carried out simultaneously, time cost can be saved, and the uniformity of precision experimental operation of different sample solutions can be ensured. Multiple pretreatment units can be used simultaneously, comparison experiments can be carried out, and the consistency of results can be ensured. The acidity of the solution can be greatly reduced, the PH of the solution can be effectively adjusted, and the damage to the instrument can be reduced. Volatile components are collected to reduce environmental pollution. The heating function area is provided with a label, the information is clear, the whole process is efficient and clean.

[0036] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the utility model, but not to limit them. Although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A laboratory evaporation concentration device, characterized by, The utility model provides a horizontal setting base (1), the base (1) is fixedly connected with vertical setting vertical support (2), vertical support (2) is connected with horizontal telescopic rod II (16), support plate (3) and horizontal telescopic rod I (7) from bottom to top in proper order through knob III (6-3), knob I (6-1) and knob II (6-2), the heating recess (4) of placing heating device (5) is fixedly arranged to the end of support plate (3) away from vertical support (2), the annular cup placing recess (9-1) of placing beaker is fixed to the end of horizontal telescopic rod I (7) away from vertical support (2), the tightness clamp (17) is equipped to the end of horizontal telescopic rod II (16) away from vertical support (2), glass guide pipe II is connected on the tightness clamp (17), the upper end of glass guide pipe II is connected with condensing device (13), the upper end of condensing device (13) is connected with glass guide pipe I (12), the other end of glass guide pipe I (12) is fixedly connected with conical steam cover (11).

2. The evaporative concentration apparatus for laboratory use according to claim 1, wherein The top end surface of the base (1) is further provided with a gasket (19) for placing a liquid collection bottle (18).

3. The evaporative concentration apparatus for laboratory use according to claim 1, wherein The condensing device (13) is provided with a water inlet (14) and a water outlet (15).

4. The evaporative concentration apparatus for laboratory use according to claim 1, wherein The base (1), horizontal telescopic rod II (16), support plate (3) and horizontal telescopic rod I (7) are arranged parallel to each other.

5. The evaporative concentration apparatus for laboratory use according to claim 1, wherein The middle part of the horizontal telescopic rod I (7) is provided with an adjusting valve I (8-1), and the middle part of the horizontal telescopic rod II (16) is provided with an adjusting valve II (8-2).

6. The evaporative concentration apparatus for laboratory use according to claim 1, wherein The annular cup placing recess (9-1) is provided with an annular inner ring (9-2), and the edge of the annular cup placing recess (9-1) is provided with a note card slot (10) for recording sample data; the diameter of the annular cup placing recess (9-1) is 10 cm.

7. The evaporative concentration apparatus for laboratory use according to claim 1, wherein The support plate (3), vertical support (2), horizontal telescopic rod I (7) and horizontal telescopic rod II (16) are made of stainless steel coated with polyether ether ketone.

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