Chemical experiment rack

Abstract

The utility model relates to the technical field of experimental instruments, in particular to a chemical experiment frame which comprises a base and a stand column vertically arranged at the top of the base, an experimental assembly is arranged on the stand column and comprises a fixing instrument used for fixing experimental instruments, and the fixing instrument is detachably installed on the stand column through an installation base. The experimental assembly further comprises a bearing plate for bearing experimental instruments, and the plate surface of the bearing plate is parallel to the top surface of the base; the bearing plate is installed on the lifting frame, the lifting frame is installed on the base, and the bearing plate is located between the base and the fixing instrument under the action of the lifting frame. The placement height of experimental instruments such as an alcohol lamp and a beaker which need to be placed on a plane during experiments can be freely adjusted, a fixing ring or a fixing clamp for fixing an experimental reagent does not need to be adjusted, and the experimental reagent is prevented from toppling over.

Description

TECHNICAL FIELD

[0001] The utility model relates to experimental instrument technical field, especially a chemical experiment frame. BACKGROUND

[0002] The experimental frame is also called an iron stand, and the traditional experimental frame is composed of a base with large mass and a column fixed to the iron base and perpendicular to the base, and according to different experimental contents, additional instruments such as an iron ring, a flask clamp, a burette clamp and a condenser clamp that can move up and down are often provided.

[0003] The existing experimental frame clamps the additional instruments through a cross clamp clamping mode and moves up and down through a knob, so as to adjust the position of the fixed instrument, such as the multifunctional experimental iron stand disclosed in the Chinese utility model patent with the application number CN202021273665.7, which is fixed by using a knob to abut against the column, has a small contact area, is easy to slide, is difficult to fix, and can only adjust the movement of the additional instruments in the horizontal and vertical directions, and cannot flexibly adjust the inclination angle of the clamped vessel; in addition, when the experiment needs to be heated, the existing experimental frame cannot freely adjust the height of the alcohol lamp, and can only adjust the fixed ring, the fixed clamp and other instruments on which the experimental reagent is placed, which is easy to cause the experimental reagent to pour during the adjustment process, not only wastes the experimental reagent and affects the experimental accuracy, but also causes laboratory pollution, and may even corrode the skin of the experimenter. UTILITY MODEL CONTENT

[0004] In view of the above, it is necessary to provide a chemical experiment frame, which can freely adjust the placement height of experimental instruments such as alcohol lamps and beakers that need to be placed on a plane during experiments, without the need to adjust the fixed ring or the fixed clamp on which the experimental reagent is fixed, so as to avoid the experimental reagent from pouring.

[0005] To achieve the above purpose, the utility model adopts the technical scheme of a chemical experiment frame, which comprises a base and a column vertically arranged on the top of the base, an experimental set is arranged on the column, the experimental set comprises a fixed instrument for fixing experimental equipment, and the fixed instrument is detachably installed on the column through a mounting seat; the experimental set further comprises a receiving plate for receiving experimental instruments, and the upper plate surface of the receiving plate is horizontally arranged; the receiving plate is installed on a lifting frame, the lifting frame is installed on the base, and the receiving plate moves vertically between the base and the fixed instrument under the action of the lifting frame.

[0006] Further, the lifting frame comprises a lifting rod, a first locking member, one end of the lifting rod is slidably connected to the mounting base, the sliding direction is parallel to the height direction of the stand; the other end of the lifting rod is located right below the mounting base, and the other end is fixedly connected with the receiving plate; the first locking member is used for preventing the lifting rod from sliding relative to the connecting rod, and is installed at the sliding connection position of the lifting rod and the mounting base.

[0007] Further, a connecting hole is formed in the mounting base, the lifting rod is slidably arranged in the connecting hole, the first locking member comprises a clamping block and a fixing tube, two or more clamping blocks are arranged at the end of the connecting hole, the clamping blocks are arranged around the center line of the connecting hole, and the thickness of each clamping block gradually decreases from one end to the other end of the connecting hole; the fixing tube has a threaded section, a locking section and a through hole in sequence, the threaded section is threadedly connected with the clamping block, the locking section is located between the threaded section and the through hole, the locking section is in the shape of a gradually tapered horn, the end of the horn with a larger opening is connected with the threaded section, and the locking section is used for pressing the clamping block to shrink towards the center of the lifting rod to clamp and fix the lifting rod when the threaded section is threadedly connected with the clamping block.

[0008] Further, an asbestos net frame is slidably connected to the lifting rod, the asbestos net frame is in the shape of a hollow frame structure, the hollow surface is parallel to the surface of the receiving plate, and the sliding direction is the height direction of the lifting rod; the second locking member is installed on the lifting rod and used for preventing the asbestos net frame from sliding.

[0009] Further, a plurality of locking holes are formed in the lifting rod, and the locking holes are arranged at intervals along the rod body of the lifting rod; the asbestos net frame is slidably connected to the lifting rod through a sliding block, and the second locking member is installed on the sliding block; the second locking member comprises a locking block and an elastic member, the locking block is movably installed on the sliding block through the elastic member, one end of the locking block is located outside the sliding block, and the other end of the locking block faces the lifting rod, and the other end is inserted into the locking hole opposite to the other end under the action of the elastic member.

[0010] Further, the lifting frame is detachably connected to the mounting base.

[0011] Further, the fixing device is rotatably connected to the mounting base through a connecting rod, and the rotation axis direction is perpendicular to the height direction of the stand; the connecting rod is in an extension structure.

[0012] Further, the mounting base is in U-shaped structure, the lifting frame is mounted on the vertical edge of the U-shaped structure, one end of the mounting base is detachably clamped to the stand by clamping devices, and the other end of the mounting base is mounted to the fixing device; the clamping devices comprise two clamping plates and two threaded columns, the clamping plates are mounted in the U-shaped opening of the mounting base, the clamping plates are slidably connected to the vertical edges of the U-shaped structure by guide rods, the sliding direction is perpendicular to the vertical edges of the U-shaped structure, and one clamping plate is connected to one vertical edge of the U-shaped structure; one threaded column is arranged on each vertical edge of the U-shaped structure, the threaded column is threaded through the vertical edge on the side of the threaded column, one end of the threaded column is located in the U-shaped opening of the mounting base and is rotatably connected to the clamping plate, and the other end of the threaded column is located outside the mounting base.

[0013] Further, the clamping plates are in circular arc structure, and the two sides of the two clamping plates, which are opposite to each other, are provided with elastic rubber pads.

[0014] Further, the stand is provided with a plurality of experimental devices, and a counterweight is slidably arranged on the base and slides in the length direction of the base.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1、 the utility model discloses a base is provided with lifting frame, and the receiving plate for receiving alcohol lamp, beaker and other experimental instruments is installed on the lifting frame, so that the receiving plate can move between the base and the fixing device along with the lifting frame. When filtering is needed, the position of the receiving plate can be adjusted so that the beaker on the receiving plate and the funnel on the fixing ring are at a suitable interval distance. Similarly, when heating is needed, the receiving plate can be directly adjusted to move up and down along with the lifting frame, which adjusts the distance between the alcohol lamp and the time interval of the experimental reagent. The fixing ring or the fixing clamp that fixes the experimental reagent does not need to be adjusted, so that the experimental reagent is prevented from spilling. Moreover, the asbestos net frame is slidably arranged on the lifting frame, and the lifting of the asbestos net can be adjusted according to the experimental condition. When the asbestos net is needed for heating experiment, the asbestos net frame can be directly lifted to a certain distance, and the asbestos net is overlapped on the asbestos net frame, so that the asbestos net frame does not need to be additionally arranged. When the asbestos net is not needed, the asbestos net frame can be lowered to abut against the receiving plate, so that the placement of the experimental instruments on the receiving plate is not affected.

[0017] 2, the utility model discloses a setting up the support plate and the lifting frame can make the test -tube rack can place multiple alcohol lamps or beaker etc. experimental apparatus simultaneously, need not like traditional iron stand as can only place alcohol lamp or beaker etc. experimental apparatus on the base, the utility model discloses can carry out multiple experiments simultaneously, and the use of experimental rack is greatly widened, and moreover, in order to prevent the experimental rack from toppling when carrying out multiple experiments, the utility model discloses still sets up the counterweight on the base, can adjust the counterweight of base according to the use of experimental rack, and the balance of experimental rack is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the perspective view when setting up multiple experimental sets of the utility model.

[0019] Figure 2 It is the front view when setting up multiple experimental sets of the utility model.

[0020] Figure 3 It is Figure 2 The enlarged view of A in the figure.

[0021] Figure 4 It is the front view when heating the round bottom flask alone of the utility model.

[0022] Figure 5 It is the front view when heating the test tube alone of the utility model.

[0023] Figure 6 It is the front view when filtering alone of the utility model.

[0024] Figure 7 It is the structure diagram of the first locking piece of the utility model.

[0025] MAIN ELEMENT SYMBOL EXPLANATION

[0026] In the figure: 1-base, 11-counterweight, 2-stand,

[0027] 31-fixed instrument, 311 connecting rod, 32-support plate

[0028] 4-mounting seat, 411-clamping plate, 412-guide rod, 413-threaded column, 42-connection hole, 421-clamping block,

[0029] 5-lifting rod, 511-fixed tube, 5111-threaded section, 5112-locking section, 5113-through hole, 52-asbestos net rack, 521-asbestos net, 522-sliding block, 523-locking block, 524-elastic member, 53-locking hole,

[0030] 61-test tube, 62-alcohol lamp, 63-beaker, 64-funnel, 65-round bottom flask.

[0031] The following specific embodiments will further illustrate the utility model in combination with the above-mentioned drawings. DETAILED DESCRIPTION

[0032] Please refer to Figures 1-7 In a preferred embodiment of the utility model, a chemical experiment frame, including base 1 and vertical setting in the top of base 1's stand 2, be provided with experimental set on stand 2, preferably, be provided with multiple experimental set on stand 2, can carry out multiple experiments simultaneously;In order to prevent when carrying out multiple experiments, experiment frame falls, base 1 is slidably provided with counterweight 12, its sliding direction is the length direction of base 1, can according to the use of experiment frame, the position of counterweight 12 on base 1 is slidably adjusted, and the balance of experiment frame is enhanced.Moreover, the opposite sides of base 1 are provided with counterweight 12, so that the effect of counterweight adjustment is better.

[0033] Further, the experimental group has fixing apparatus 31 for fixing experimental equipment, in particular, the fixing apparatus 31 includes a fixing clamp, a fixing ring and other additional apparatus for fixing experimental equipment, and the fixing apparatus 31 is detachably mounted on the stand 2 through the mounting seat 4. In this embodiment, the fixing apparatus 31 is mounted on the stand 2 in the following way: the mounting seat 4 is in a U-shaped structure, one end of the mounting seat 4 is detachably clamped to the stand 2 through a clamping device, and the other end is mounted with the fixing apparatus 31; since the fixing apparatus 31 is mounted on the mounting seat 4, when the mounting seat 4 is detachably clamped to the stand 2 through the clamping device, the fixing apparatus 31 can be detachably mounted on the stand 2. In particular, the clamping device includes two clamping plates 411 and two threaded columns 413, the clamping plates 411 are mounted in the U-shaped opening of the mounting seat 4, and the clamping plates 411 are slidably connected to the U-shaped vertical edges of the mounting seat 4 through guide rods 412, the sliding direction is perpendicular to the U-shaped vertical edges of the mounting seat 4, and one clamping plate 411 is connected to one U-shaped vertical edge; one threaded column 413 is arranged on each U-shaped vertical edge, the threaded column 413 is threaded through the U-shaped vertical edge on the side thereof, one end of the threaded column 413 is located in the U-shaped opening of the mounting seat 4 and is rotatably connected to the clamping plate 411, and the other end of the threaded column 413 is located outside the mounting seat 4. In use, the stand 2 is located in the U-shaped opening of the mounting seat 4 and between the two clamping plates 411, and the threaded column 413 is adjusted by rotating the threads, which drives the clamping plate 411 to move, thereby driving the clamping plate 411 to abut against the stand 2; the guide rod 412 can prevent the clamping plate 411 from rotating with the threaded column 413 when the threaded column 413 drives the clamping plate 411 to abut against the stand 2, thereby enabling the two clamping plates 411 to simultaneously abut against the stand 2 and clamp the stand 2, so that the mounting seat 4 is fixed at a specified position of the stand 2. By clamping the stand 2 with the clamping plate 411, the contact area is larger, and compared with the traditional way of directly using a knob to abut against the stand 2 for fixation, the way is more stable and less likely to slip. Preferably, the clamping plate 411 is in a circular arc structure, which can better fit the stand 2 and increase the contact area with the stand 2, and in addition, the two sides of the two clamping plates 411 facing each other are provided with elastic rubber pads, which increase the friction between the clamping plate 411 and the stand 2 and make the fixation of the mounting seat 4 more stable.

[0034] Preferably, the fixing device 31 is connected to the mounting base 4 by a connecting rod 311, and the rotating axis direction is perpendicular to the height direction of the stand 2; the connecting rod 311 is of telescopic structure. Some experiments need to tilt the test tube 61, for example, when heating the liquid substance in the test tube 61, the test tube 61 should be at an angle of 45 degrees with the placing plane of the alcohol lamp 62 and aligned with the outer flame of the alcohol lamp 62 for heating; the traditional test tube 61 rack can only adjust the angle of the test tube 61 by adjusting the angle of the test tube 61 clamped by the test tube 61 clamp, and the test tube 61 is often clamped unstably or at an incorrect angle, which needs to be adjusted for many times; however, by using the utility model, the fixing device 31 can be directly rotated, so that the fixing device 31 is at a certain angle with the placing plane of the alcohol lamp 62, thereby the test tube 61 clamped by the fixing device 31 is at the required angle, and then the bottom of the test tube 61 rack can be located directly above the alcohol lamp 62 by adjusting the telescopic length of the connecting rod 311. It should be noted that the rotation and telescoping of the rod-shaped structure are common prior art in the field, and the drawings part of the specification of the present application only selects one way as a schematic diagram, and the person skilled in the art can select according to the actual situation, so as to achieve the purpose of rotation and telescoping.

[0035] Further, the experimental group also comprises a receiving plate 32 for receiving experimental instruments, the upper plate surface of the receiving plate 32 is horizontally arranged, and the experimental instruments herein specifically refer to instruments that need to be placed on a certain plane during experiments, such as the alcohol lamp 62 used for heating and the beaker 63 used for filtering; the receiving plate 32 is installed on a lifting frame, the lifting frame is installed on the base 1, and the receiving plate 32 moves vertically between the base 1 and the fixing device 31 under the action of the lifting frame. Under the lifting action of the lifting frame, the receiving plate 32 can move vertically between the base 1 and the fixing device 31. When filtering is needed, the position of the receiving plate 32 can be adjusted by lifting the lifting frame, so that the beaker 63 on the receiving plate 32 and the funnel 64 on the fixing ring are at a suitable interval distance; similarly, when heating is needed during experiments, the receiving plate 32 can be directly adjusted to move up and down by the lifting frame, that is, the distance between the alcohol lamp 62 and the time to be heated is adjusted; and the fixing ring or the fixing clamp holding the experimental reagent does not need to be adjusted, so as to avoid spilling of the experimental reagent. Preferably, the lifting frame is detachably connected to the mounting base 4, and when the receiving plate 32 is completely not needed, the receiving plate 32 can be detached, without affecting the performance of other experiments.

[0036] Preferably, the U-shaped vertical edge of the mounting seat 4 is provided with the lifting frame, which is detachably mounted on the column 2 through the mounting seat 4. In this embodiment, the lifting frame comprises a lifting rod 5, a first locking member, one end of the lifting rod 5 is slidably connected to the mounting seat 4, the sliding direction is parallel to the height direction of the column 2; the other end of the lifting rod 5 is located directly below the mounting seat 4, and the other end is fixedly connected with the receiving plate 32; the first locking member is used to prevent the lifting rod 5 from sliding relative to the connecting rod 311, and is mounted at the sliding connection between the lifting rod 5 and the mounting seat 4. The lifting of the receiving plate 32 is driven by the sliding of the lifting rod 5 on the mounting seat 4. More preferably, the mounting seat 4 is provided with a connecting hole 42, the lifting rod 5 is slidably arranged in the connecting hole 42, and the first locking member comprises a clamping block 421 and a fixed tube 511. One end of the connecting hole 42 is provided with two or more clamping blocks 421, which are arranged around the center line of the connecting hole 42. The thickness of each clamping block 421 gradually decreases from one end to the other end. The fixed tube 511 has a threaded section 5111, a locking section 5112 and a through hole 5113 for the lifting rod 5 in sequence. The fixed tube 511 is threadedly connected to the clamping block 421 through the threaded section 5111. The locking section 5112 is located between the threaded section 5111 and the through hole 5113. The locking section 5112 is tapered and has a larger opening at one end connected to the threaded section 5111. When the threaded section 5111 is threadedly connected to the clamping block 421, the locking section 5112 compresses the clamping block 421 to shrink towards the center of the lifting rod 5 to clamp and fix the lifting rod 5. Since the locking section 5112 compresses the clamping block 421 to shrink towards the center of the lifting rod 5 to clamp and fix the lifting rod 5 when the threaded section 5111 is threadedly connected to the clamping block 421, the lifting rod 5 cannot slide along the connecting hole 42, so that the mounting seat 4 can be fixed at a certain position of the lifting rod 5, so that the receiving plate 32 connected to the lifting rod 5 is located at a certain position between the base 1 and the fixing device 31.

[0037] Preferably, the lifting rod 5 is slidably connected with an asbestos net rack 52, the asbestos net rack 52 is a hollow frame structure, the hollow surface of which is parallel to the surface of the receiving plate 32, and the sliding direction is the height direction of the lifting rod 5; the lifting rod 5 is provided with a second locking member for preventing the asbestos net rack 52 from sliding. The lifting of the asbestos net rack 52 can be adjusted according to the experimental conditions, and the second locking member can be used for locking when the asbestos net rack 52 is lifted to a certain position; when the asbestos net rack 52 is needed for heating experiments, such as heating the round-bottom flask 65, the asbestos net rack 52 can be directly lifted to a certain distance, and the asbestos net rack 52 is overlapped on the asbestos net rack 52, and the asbestos net rack 52 does not need to be additionally arranged; when the asbestos net rack 52 is not needed, the asbestos net rack 52 can be lowered to abut against the receiving plate 32, and the placement of the experimental instruments on the receiving plate 32 is not affected. In the embodiment, a plurality of locking holes 53 are formed in the lifting rod 5, and the locking holes 53 are arranged at intervals along the rod body of the lifting rod 5; the asbestos net rack 52 is slidably connected with the lifting rod 5 through a sliding block 522, and the second locking member is arranged on the sliding block 522; the second locking member comprises a locking block 523 and an elastic member 524, the locking block 523 is movably arranged on the sliding block 522 through the elastic member 524, one end of the locking block 523 is located outside the sliding block 522, and the other end faces the lifting rod 5, and the other end is inserted into the locking hole 53 opposite to it under the action of the elastic member 524, at this time, the second locking member is in a locked state, and the position of the asbestos net rack 52 is fixed. By adjusting the position of the locking hole 53 into which the locking block 523 is inserted, the interval distance between the asbestos net rack 52 and the receiving plate 32 is adjusted, so that it can adapt to the use of alcohol lamps 62 of different heights; when the locking of the second locking member needs to be released, the locking block 523 only needs to be taken out of the locking hole 53.

[0038] The above description is a detailed description of the preferred and feasible embodiments of the present application, but the embodiments are not used to limit the patent application range of the present application, and any equivalent changes or modified changes completed under the technical spirit of the present application should belong to the patent range covered by the present application.

Claims

1. A chemical experiment rack, comprising a base and a vertical column vertically arranged on the top of the base, an experiment set is arranged on the column, the experiment set comprises a fixing device for fixing experiment equipment, characterized in that: The fixing device is detachably mounted on the stand via the mounting base; the experimental set further comprises a receiving plate for receiving experimental instruments, an upper plate surface of the receiving plate being horizontally arranged; the receiving plate is mounted on a lifting frame, the lifting frame being mounted on the base, and the receiving plate moves vertically between the base and the fixing device under the action of the lifting frame; the lifting frame comprises a lifting rod and a first locking member, one end of the lifting rod being slidably connected to the mounting base, a sliding direction being parallel to a height direction of the stand; the other end of the lifting rod is located directly below the mounting base, and the other end is fixedly connected to the receiving plate; the first locking member is used for preventing the lifting rod from sliding relative to the connecting rod, and is mounted at a sliding connection between the lifting rod and the mounting base; the lifting frame is detachably connected to the mounting base; a plurality of experimental sets are arranged on the stand, and a counterweight is slidably arranged on the base, a sliding direction of the counterweight being a length direction of the base.

2. The chemical bench of claim 1, wherein: A connecting hole is formed in the mounting base, the lifting rod is slidably arranged in the connecting hole, and the first locking member comprises clamping blocks and a fixing tube; two or more clamping blocks are arranged at intervals at one end of the connecting hole, the clamping blocks being arranged around a center line of the connecting hole, and a thickness of each clamping block gradually decreases from one end to the other end of the connecting hole; the fixing tube has a threaded section, a locking section and a through hole for the lifting rod arranged in sequence in the inside of the fixing tube, the fixing tube is threadedly connected to the clamping blocks via the threaded section, the locking section is located between the threaded section and the through hole, and the locking section is in the shape of a gradually tapered horn, one end of the horn with a larger opening being connected to the threaded section; when the threaded section is threadedly connected to the clamping blocks, the locking section compresses the clamping blocks to shrink towards the center of the lifting rod to clamp and fix the lifting rod.

3. The chemical bench of claim 1, wherein: An asbestos net frame is slidably connected to the lifting rod, the asbestos net frame being in the shape of a hollow frame structure, a hollow surface of the asbestos net frame being parallel to a plate surface of the receiving plate, and a sliding direction being a height direction of the lifting rod; a second locking member for preventing the asbestos net frame from sliding is mounted on the lifting rod.

4. The chemical bench of claim 3, wherein: A plurality of locking holes are formed in the lifting rod and arranged at intervals along a rod body of the lifting rod; the asbestos net frame is slidably connected to the lifting rod via a sliding block, and the second locking member is mounted on the sliding block; the second locking member comprises a locking block and an elastic member, the locking block being movably mounted on the sliding block via the elastic member, one end of the locking block being located outside the sliding block, and the other end of the locking block facing the lifting rod, the other end being inserted into a locking hole directly opposite to the other end under the action of the elastic member.

5. The chemical bench of claim 1, wherein: The fixing device is rotatably connected to the mounting base via a connecting rod, and a rotation axis direction of the connecting rod is perpendicular to a height direction of the stand; the connecting rod is in a telescopic structure.

6. The chemical bench of claim 1, wherein: The mounting base is in U-shaped structure, the lifting frame is installed on the vertical edge of the U-shaped structure, one end of the mounting base is detachably clamped to the stand by clamping device, and the other end of the mounting base is installed to the fixing device; the clamping device comprises two clamping plates and two threaded columns, the clamping plates are installed in the U-shaped opening of the mounting base, the clamping plates are slidably connected to the vertical edges of the U-shaped structure by guide rods, the sliding direction is perpendicular to the vertical edges of the U-shaped structure, and one clamping plate is connected to one vertical edge of the U-shaped structure; one threaded column is arranged on each vertical edge of the U-shaped structure, the threaded column is threaded through the vertical edge of the U-shaped structure on the side, one end of the threaded column is located in the U-shaped opening of the mounting base and is rotatably connected to the clamping plate, and the other end of the threaded column is located outside the mounting base.

7. A chemical bench according to claim 6, wherein: The clamping plates are in circular arc structure, and the two clamping plates are provided with elastic rubber pads on the two mutually opposite side surfaces.

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