Test tube clamping frame for chemical test

Abstract

The utility model provides a test tube clamping frame for chemical test, which comprises a bottom plate, and a cross-shaped base is fixedly mounted at the top of the bottom plate; the guide mechanism is arranged on the bottom plate and is used for assisting the sampling tube in stable sampling; and the clamping mechanism is arranged on the cross-shaped base, the clamping mechanism comprises sliding grooves, sliding blocks and clamping plates, four sets of sliding grooves are formed in the top of the cross-shaped base and are annularly distributed, one set of sliding blocks is slidably installed in each of the four sets of sliding grooves, and one set of clamping plates is fixedly installed on the tops of the four sets of sliding blocks. The defect that the existing test tube clamping device only can be used for mounting a test tube with a fixed size is overcome through a clamping plate relaxation clamping mode, and the flexibility of the device is improved. The opening side ends of the multiple clamping plates can form an opening larger than the diameter of the test tube and a semi-open guide sheet, so that the test tube can be taken out from one side of each clamping plate, the convenience of taking the test tube is improved, and operation and use of experimenters are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical experiment equipment, and specifically relates to a test tube clamping rack for chemical analysis. Background Technique

[0002] As a commonly used sampling container in chemical experiments, test tubes are usually used to store chemical substances and carry out chemical reactions. During the experiment, test tubes are usually fixed to prevent them from tipping over. The commonly used method is mainly to use test tube clamps. Chinese patent document CN218924763U discloses a sampling device for chemical analysis, including a support tabletop. One side of the support tabletop is fixedly connected with a support side plate, and a test tube stable placement mechanism is arranged on the top of the support tabletop; the test tube is placed in the limiting sleeve plate, and under the action of the limiting ball, the outer wall of the test tube can be clamped and limited to ensure the stability of the bottom structure of the test tube, so that the test tube will not shake without external force. Since the sampling tube will inevitably touch the inner wall of the test tube during sampling, in order to prevent the test tube from falling, the middle position of the test tube can be clamped and fixed by the test tube auxiliary fixing component, so as to ensure that the test tube can always maintain the structural stability during sampling, and further improve the accuracy of chemical analysis. The sampling tube passes through the auxiliary sampling sleeve plate, so that the sampling tube will not deviate during the downward sampling process.

[0003] However, due to the auxiliary sampling sleeve plate with a fixed inner diameter in the above-mentioned existing device, only test tubes smaller than the inner diameter of the auxiliary sampling sleeve plate can be installed. Even if test tubes smaller than the inner diameter of the auxiliary sampling sleeve plate are installed, they will not be stable enough, resulting in a low application range of the device; in addition, since the inner diameter of the auxiliary sampling sleeve plate is a closed contour, when taking out the test tube, it can only be completely taken out from the auxiliary sampling sleeve plate in a bottom-up manner, resulting in inconvenient operation. In view of this, a test tube clamping rack for chemical analysis is proposed. Summary of the Invention

[0004] The following technical solutions are proposed by the utility model to solve the problems in the background technique:

[0005] A test tube clamping rack for chemical analysis is provided, including:

[0006] A bottom plate, on the top of which a cross base is fixedly installed;

[0007] A guiding mechanism, which is arranged on the bottom plate and is used to assist the sampling tube to sample stably;

[0008] A clamping mechanism, which is arranged on the cross base. The clamping mechanism includes a chute, a slider and a clamping plate. Four

[0009] There are four groups of sliding grooves which are annularly distributed. A slider is slidably installed in each of the four groups of sliding grooves, and a clamping plate is fixedly installed on the top of each of the four sliders.

[0010] Preferably, the clamping mechanism further includes springs. A spring is arranged in each of the four groups of sliding grooves. One end of each of the four springs is fixedly connected to the corresponding slider, and the other end of each of the four springs is fixedly connected to the inner wall of the corresponding sliding groove. With the cooperation of the cross base and the clamping mechanism, test tubes of different sizes can be clamped, and with the rubber strips on each clamping plate, the clamping stability can be ensured, the practicability of the device is improved, and the flexibility of the device is enhanced.

[0011] Preferably, the guiding mechanism includes an L-shaped fixed plate, an L-shaped movable plate, a locking bolt and a guiding piece. The L-shaped fixed plate is fixedly installed on the outer surface of one side of the bottom plate.

[0012] An activity groove is formed in the top of the L-shaped fixed plate. The L-shaped movable plate is slidably installed on the activity groove. The locking bolt is threadedly installed on the outer surface of one side of the L-shaped fixed plate, and the guiding piece is fixedly installed on the L-shaped movable plate.

[0013] Preferably, an installation groove is formed in one side of the L-shaped movable plate, and an anti-slip pad is fixedly installed in the installation groove. The locking bolt penetrates through the L-shaped fixed plate and extends into the activity groove to abut against the anti-slip pad. With the function of the anti-slip pad, the locking bolt can be assisted to stably fix the lifting of the L-shaped movable plate, ensuring the use effect of the device and being beneficial to the popularization and use of the device.

[0014] Preferably, a rubber strip is fixedly installed on each of the mutually adjacent surfaces of the four clamping plates to improve the clamping stability of the test tube.

[0015] Preferably, a positioning groove is formed in the top of the cross base.

[0016] Preferably, a connecting rod is fixedly installed on one of the sliders. One end of the connecting rod penetrates through the cross base and extends outside the cross base.

[0017] and a pull ring is fixedly installed, driving the corresponding clamping plate to move away for convenient placement of the test tube.

[0018] The beneficial effects of the utility model are as follows:

[0019]

[0020] ​The test tube holder can clamp test tubes of different sizes through the cooperation of the cross base and the clamping mechanism. With the rubber strips on each clamping plate, the stability of clamping can be ensured. By using the clamping method of the clamping plate's relaxation and clamping, the drawback that the existing test tube clamping device can only install test tubes of fixed sizes is solved, and the flexibility of the device is improved. Moreover, the open ends formed by the multiple clamping plates on the opening side can form an opening larger than the diameter of the test tube and semi-open guiding pieces, enabling the test tube to be taken out from one side of the clamping plate, improving the convenience of taking out the test tube and facilitating the operation of the experimenter.

[0021] Through the guiding mechanism, the device can adjust the sampling position of the sampling tube according to the length of the test tube, and it can assist the sampling tube to sample stably. At the same time, with the help of the anti-slip pad, it can assist the locking bolt to stably fix the lifting of the L-shaped movable plate, ensuring the use effect of the device and facilitating the popularization and use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 is the front perspective view of the present invention;

[0024] Figure 2 is the rear perspective view of the present invention;

[0025] Figure 3 is the internal structure schematic diagram of the cross base of the present invention.

[0026] Reference numerals: 1, base plate; 2, cross base; 3, clamping mechanism; 31, chute; 32, slider; 33, spring; 34, clamping plate; 4, guiding mechanism; 41, L-shaped fixing plate; 42, L-shaped movable plate; 43, locking bolt; 44, guiding piece; 5, anti-slip pad; 6, rubber strip; 7, positioning groove; 8, connecting rod; 9, pull ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following further illustrates the above solutions with specific embodiments. It should be understood that these embodiments are for explaining the present invention rather than limiting the scope of the present invention. The implementation conditions adopted in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually those in conventional experiments.

[0028] In a specific embodiment, a test tube clamping rack for chemical analysis is provided. Please refer to Figures 1-3 , which includes a bottom plate 1, a guiding mechanism 4, and a clamping mechanism 3. A cross base 2 is fixedly installed on the top of the bottom plate 1. The guiding mechanism 4 is arranged on the bottom plate 1 and is used to assist the sampling tube in stable sampling. A positioning groove 7 is formed on the top of the cross base 2;

[0029] The clamping mechanism 3 is arranged on the cross base 2. The clamping mechanism 3 includes a sliding groove 31, a sliding block 32, and a clamping plate 34. Four groups of sliding grooves 31 are formed on the top of the cross base 2 and are distributed in a ring shape. A group of sliding blocks 32 are slidably installed in each of the four groups of sliding grooves 31. A group of clamping plates 34 are fixedly installed on the tops of the four groups of sliding blocks 32.

[0030] The clamping mechanism 3 further includes springs 33. A group of springs 33 are arranged in each of the four groups of sliding grooves 31. One ends of the four groups of springs 33 are fixedly connected to the corresponding sliding blocks 32, and the other ends of the four groups of springs 33 are fixedly connected to the inner walls of the corresponding sliding grooves 31. A connecting rod 8 is fixedly installed on one of the sliding blocks 32. One end of the connecting rod 8 penetrates through the cross base 2 and extends outside the cross base 2 and is fixedly installed with a pull ring 9. Through the cooperation of the cross base 2 and the clamping mechanism 3, test tubes of different sizes can be clamped, and with the rubber strips 6 on each clamping plate 34, the stability of clamping can be ensured, solving the problem that some existing devices can only install test tubes of fixed sizes, while the sizes and models of test tubes are diverse, and even when installing test tubes of different sizes, it will be unstable enough, resulting in a low application range of the device, improving the practicability of the device and enhancing the flexibility of the device.

[0031] In addition, the open sides of multiple clamping plates in this application can form an opening and a semi-open guiding piece larger than the diameter of the test tube, enabling the test tube to be taken out from one side of the clamping plate, improving the convenience of taking out the test tube and facilitating the operation and use by experimental personnel.

[0032] The guiding mechanism 4 includes an L-shaped fixed plate 41, an L-shaped movable plate 42, a locking bolt 43 and a guiding piece 44. An L-shaped fixed plate 41 is fixedly installed on the outer surface of one side of the bottom plate 1. An activity groove is formed at the top of the L-shaped fixed plate 41. An L-shaped movable plate 42 is slidably installed on the activity groove. A locking bolt 43 is threadedly installed on the outer surface of one side of the L-shaped fixed plate 41. A guiding piece 44 is fixedly installed on the L-shaped movable plate 42. An installation groove is formed on one side of the L-shaped movable plate 42. An anti-slip pad 5 is fixedly installed in the installation groove. The locking bolt 43 penetrates through the L-shaped fixed plate 41 and extends into the activity groove and abuts against the anti-slip pad 5. A group of rubber strips 6 are fixedly installed on the mutually approaching surfaces of the four groups of clamping plates 34. Through the guiding mechanism 4, the position where the sampling tube should sample can be adjusted according to the length of the test tube, and it can assist the sampling tube to sample stably. At the same time, under the action of the anti-slip pad 5, it can assist the locking bolt 43 to stably fix the lifting of the L-shaped movable plate 42, ensuring the use effect of the device and being beneficial to the popularization and use of the device.

[0033] Working principle: Pull the pull ring 9, drive the corresponding slider 32 to slide in the corresponding chute 31 through the connecting rod 8, and drive the corresponding clamping plate 34 to move out first. Place the test tube to be installed between the other three groups of clamping plates 34 and place it in the positioning groove 7. After releasing the pull ring 9, the corresponding clamping plate 34 will reset. Under the action of each spring 33, the four groups of sliders 32 also slide accordingly to drive each clamping plate 34 to adapt to the size of the test tube until the four groups of clamping plates 34 simultaneously abut against the test tube and clamp it. Rotate the locking bolt 43 to release the locking of the L-shaped movable plate 42, and then slide the L-shaped movable plate 42 up and down to drive the guiding piece 44 to lift and lower, so that the guiding piece 44 is located directly above the test tube. After positioning, rotate and lock the locking bolt 43 again. The user holds the sampling tube and moves it down along the guiding piece 44 and extends it into the test tube to achieve stable sampling. When taking out the test tube, the clamping plate 34 can move outwards to increase the space between the side end of the movable clamping plate 34 and the side ends of the other clamping plates 34. At this time, the test tube can be taken out from the space at the side end of the clamping plate 34, improving the convenience of use.

[0034] Inspired by the above ideal embodiments of the present invention, through the above description, relevant staff can make various changes and modifications completely within the scope of not deviating from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A test tube clamping rack for chemical analysis, characterized in that, Including: A bottom plate (1) with a cross base (2) fixedly installed on its top; A guiding mechanism (4) arranged on the bottom plate (1), and the guiding mechanism (4) is used to assist the sampling tube to sample stably; A clamping mechanism (3) arranged on the cross base (2), the clamping mechanism (3) includes a chute (31), a slider (32) and a clamping plate (34). Four groups of chutes are opened on the top of the cross base (2) and are distributed in a ring shape. A group of sliders (32) are slidably installed in each of the four groups of chutes, and a group of clamping plates (34) are fixedly installed on the tops of the four groups of sliders (32); The guiding mechanism (4) includes an L-shaped fixed plate (41), an L-shaped movable plate (42), a locking bolt (43) and a guiding piece (44). An L-shaped fixed plate (41) is fixedly installed on the outer surface of one side of the bottom plate (1). An activity groove is opened on the top of the L-shaped fixed plate (41), and an L-shaped movable plate (42) is slidably installed on the activity groove. A locking bolt is threadedly installed on the outer surface of one side of the L-shaped fixed plate (41), and a guiding piece (44) is fixedly installed on the L-shaped movable plate (42).

2. The test tube clamping rack for chemical analysis according to claim 1, characterized in that, The clamping mechanism (3) further includes a spring (33). A group of springs (33) are arranged in each of the four groups of chutes. One ends of the four groups of springs (33) are fixedly connected to the corresponding sliders (32), and the other ends of the four groups of springs (33) are fixedly connected to the inner walls of the corresponding chutes (31). Under the combined action of the cross base (2) and the clamping mechanism (3), test tubes of different sizes can be clamped, and rubber strips (6) are arranged on the inner sides of the clamping plates (34).

3. The test tube clamping rack for chemical analysis according to claim 1, characterized in that, An installation groove is opened on one side of the L-shaped movable plate (42), and an anti-slip pad (5) is fixedly installed in the installation groove. The locking bolt penetrates through the L-shaped fixed plate (41) and extends into the activity groove and abuts against the anti-slip pad (5). Under the action of the anti-slip pad (5), it can assist the locking bolt (43) to stably fix the lifting of the L-shaped movable plate (42).

4. The test tube clamping rack for chemical analysis according to claim 1, characterized in that, A group of rubber strips are fixedly installed on the mutually adjacent surfaces of the four groups of clamping plates (34).

5. A test tube clamping rack for chemical analysis according to claim 1, characterized in that, A positioning groove (7) is opened on the top of the cross base (2).

6. The test tube clamping rack for chemical analysis according to claim 1, wherein A connecting rod (8) is fixedly installed on one of the sliders. One end of the connecting rod (8) penetrates through the cross base (2) and extends outside the cross base (2) and is fixedly installed with a pull ring (9) to drive the corresponding clamping plate (34) to move away.

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