Chemical reagent sampler

Abstract

The utility model relates to the technical field of chemical reagent sampling, in particular to a chemical reagent sampler which comprises a supporting plate, a reagent cup and a reaction test tube, the reagent cup and the reaction test tube are located on the left side and the right side of the upper end face of the supporting plate respectively, and the upper side of the supporting plate is rotationally connected with a rotating disc located between the reagent cup and the reaction test tube. The rotating disc is driven by a servo motor installed on the lower side of the supporting plate, an electric telescopic rod is installed at the upper end of the rotating disc, and the output end of the electric telescopic rod is fixedly connected with a connecting plate. The sampling head can be driven by the servo motor to rotate by 180 degrees, and the reagent cup and the reaction test tube are positioned by the first positioning cylinder and the second positioning cylinder respectively, so that the sampling head can be rotated to the position above the central position in the reaction test tube, then the sampling head moves downwards and extends into the reaction test tube, and a piston moves downwards; therefore, the reagent can be dropped into the reaction test tube, and the purposes of preventing the reagent from dropping outside the reaction test tube and further preventing the corrosion of the reagent from harming instruments and human bodies are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical reagent sampling, in particular to a chemical reagent sampler. Background Art

[0002] Chemical reagents are relatively standard substances for chemical research and component analysis. They are important conditions for scientific and technological progress and are widely used in the synthesis, separation, qualitative and quantitative analysis of substances. It can be said that chemical reagents are the eyes of chemists. In the daily work of factories, schools, hospitals and research institutes, chemical reagents are indispensable, and chemical reagents are often sampled through a sampler.

[0003] In the prior art, the sampling reaction of chemical reagents mainly uses a dropper to sample the reagent and then drop it into the reaction test tube for reaction. However, when sampling in this way, it is necessary to hold the dropper and the reaction test tube by hand, and the hand is prone to shaking and slipping. Therefore, when the reagent in the reagent bottle is dropped into the reaction test tube by the dropper, the reagent is likely to drip outside. Most chemical reagents are highly corrosive and can cause great harm to instruments and even the human body. Therefore, it is necessary to propose a chemical reagent sampler to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a chemical reagent sampler, which has the characteristics of preventing the reagent from dripping outside the reaction test tube, thereby avoiding the harm caused by the corrosiveness of the reagent to instruments and the human body.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A chemical reagent sampler, including a support plate, a reagent cup and a reaction test tube respectively located on the left and right sides of the upper end surface of the support plate. A turntable located between the reagent cup and the reaction test tube is rotatably connected to the upper side of the support plate. The turntable is driven by a servo motor installed on the lower side of the support plate. An electric telescopic rod is installed on the upper end of the turntable. The output end of the electric telescopic rod is fixedly connected to a connecting plate. A through hole is formed through the upper end surface of the connecting plate. An external thread cylinder is arranged inside the through hole. A limiting ring that abuts against the lower side of the connecting plate is fixedly connected to the outer wall of the external thread cylinder. An internal thread ring that abuts against the upper end of the connecting plate is threadedly connected to the outer wall of the external thread cylinder. A sampling cylinder is installed at the lower end of the external thread cylinder. A sampling head extending into the reagent cup is installed at the lower end of the sampling cylinder;

[0006] The upper end of the support plate is fixedly connected with a first positioning cylinder and a second positioning cylinder that respectively fit with the outer walls of the reagent cup and the reaction test tube;

[0007] The upper end of the external thread cylinder penetrates and is threadedly connected with a screw rod. The lower end of the screw rod is rotatably connected with a sliding disc. The lower end of the sliding disc is fixedly connected with a connecting rod. The lower end of the connecting rod is fixedly connected with a piston located inside the sampling cylinder.

[0008] In order to facilitate the positioning of the position of the limiting ring, as an optimization of a chemical reagent sampler of the present utility model, positioning holes are respectively opened at the lower end of the connecting plate on the left and right sides of the through hole. The upper end of the limiting ring is fixedly connected with positioning rods respectively extending into the two positioning holes and matching with them.

[0009] In order to facilitate improving the stability of the sliding of the sliding disc, as an optimization of a chemical reagent sampler of the present utility model, the front and rear sides of the inner wall of the sliding disc and the external thread cylinder are both slidably connected through sliding grooves.

[0010] In order to facilitate the rotation of the screw rod and achieve an anti-slip effect when rotating the knob, as an optimization of a chemical reagent sampler of the present utility model, the upper end of the screw rod is fixedly connected with a knob, and the outer wall of the knob is provided with anti-slip lines.

[0011] In order to facilitate improving the anti-slip effect when rotating the internal thread ring, as an optimization of a chemical reagent sampler of the present utility model, the outer wall of the internal thread ring is provided with anti-slip lines.

[0012] In order to facilitate controlling the liquid level inside the sampling cylinder by observing the liquid level line, as an optimization of a chemical reagent sampler of the present utility model, a liquid level line is provided on the outer wall of the sampling cylinder.

[0013] In order to facilitate the installation and fixation of the device to improve the stability of use, as an optimization of a chemical reagent sampler of the present utility model, mounting brackets are respectively fixedly connected to the left and right sides of the lower end surface of the support plate.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] Insert the external-thread cylinder into the interior of the through-hole. Subsequently, the external-thread cylinder and the sampling cylinder can be fixed through the cooperation of the internal-thread ring and the limiting ring. When the electric telescopic rod drives the connecting plate to move downward, the sampling head can extend into the reagent cup. When the screw is rotated, the piston can be driven to move upward, and thus the reagent inside the reagent cup can be pumped into the interior of the sampling cylinder. Then, the sampling head moves upward and is located above the reagent cup. The external-thread cylinder, the sampling cylinder, and the sampling head can be driven by the servo motor to rotate 180 degrees. Since the first positioning cylinder and the second positioning cylinder respectively position the reagent cup and the reaction test tube, the sampling head can be rotated above the central position inside the reaction test tube. Subsequently, the sampling head moves downward and extends into the interior of the reaction test tube, and the piston moves downward, so that the reagent can be dropped into the interior of the reaction test tube. By this means, it is possible to prevent the reagent from dripping outside the reaction test tube, thereby avoiding the corrosiveness of the reagent from causing harm to the instrument and the human body. Description of the Drawings

[0016] Figure 1 is the overall front sectional view of the present utility model;

[0017] Figure 2 of the present utility model Figure 1 is the enlarged view at A in

[0018] Figure 3 is the connection structure diagram at the external-thread cylinder of the present utility model.

[0019] In the figure: 1, support plate; 2, reagent cup; 3, reaction test tube; 4, turntable; 5, servo motor; 6, electric telescopic rod; 7, connecting plate; 8, through-hole; 9, external-thread cylinder; 10, sampling cylinder; 11, piston; 12, sliding plate; 13, screw; 14, knob; 15, internal-thread ring; 16, positioning hole; 17, positioning rod; 18, limiting ring; 19, sampling head; 20, first positioning cylinder; 21, second positioning cylinder; 22, connecting rod. Detailed Description of the Invention

[0020] Please refer to Figures 1 to 3, a chemical reagent sampler, comprising a support plate 1, a reagent cup 2 and a reaction test tube 3 respectively located on the left and right sides of the upper end face of the support plate 1. A turntable 4 located between the reagent cup 2 and the reaction test tube 3 is rotatably connected to the upper side of the support plate 1. The turntable 4 is driven by a servo motor 5 installed on the lower side of the support plate 1. An electric telescopic rod 6 is installed at the upper end of the turntable 4. The output end of the electric telescopic rod 6 is fixedly connected to a connecting plate 7. A through hole 8 is formed through the upper end face of the connecting plate 7. An external thread cylinder 9 is arranged inside the through hole 8. A limiting ring 18 which abuts against the lower side of the connecting plate 7 is fixedly connected to the outer wall of the external thread cylinder 9. An internal thread ring 15 which abuts against the upper end of the connecting plate 7 is threadedly connected to the outer wall of the external thread cylinder 9. A sampling cylinder 10 is installed at the lower end of the external thread cylinder 9. A sampling head 19 extending into the reagent cup 2 is installed at the lower end of the sampling cylinder 10;

[0021] The upper end of the support plate 1 is fixedly connected with a first positioning cylinder 20 and a second positioning cylinder 21 which are respectively attached to the outer walls of the reagent cup 2 and the reaction test tube 3;

[0022] A screw rod 13 penetrates through and is threadedly connected to the upper end of the external thread cylinder 9. The lower end of the screw rod 13 is rotatably connected to a sliding disk 12. A connecting rod 22 is fixedly connected to the lower end of the sliding disk 12. A piston 11 located inside the sampling cylinder 10 is fixedly connected to the lower end of the connecting rod 22.

[0023] In this embodiment: during use, the external thread cylinder 9 is inserted into the through hole 8 from the lower side of the connecting plate 7, and then the internal thread ring 15 is screwed onto the outer wall of the external thread cylinder 9 until the internal thread ring 15 is pressed against the upper end of the connecting plate 7 and forces the limiting ring 18 to be pressed against the lower end of the connecting plate 7, thereby completing the fixation of the external thread cylinder 9 and the sampling cylinder 10. Then, the connecting plate 7 is driven to move downward by the electric telescopic rod 6, and at the same time, the external thread cylinder 9, the sampling cylinder 10 and the sampling head 19 are driven to move downward, so that the sampling head 19 can extend into the reagent cup 2. By rotating the screw rod 13, the sliding disk 12 is driven to move upward, and at the same time, the connecting rod 22 and the piston 11 are driven to move upward, so that the reagent in the reagent cup 2 can be pumped into the sampling cylinder 10. Then, the sampling head 19 is moved upward and located above the reagent cup 2. Then, the servo motor 5 drives the turntable 4 to rotate 180 degrees, and at the same time, drives the electric telescopic rod 6, the connecting plate 7, the external thread cylinder 9, the sampling cylinder 10 and the sampling head 19 to rotate 180 degrees. At this time, since the first positioning cylinder 20 and the second positioning cylinder 21 respectively position the reagent cup 2 and the reaction test tube 3, the sampling head 19 can be rotated to the upper position of the center inside the reaction test tube 3. Then, the sampling head 19 is moved downward and extends into the reaction test tube 3, and the piston 11 is moved downward, so that the reagent can be dropped into the reaction test tube 3. In this way, the purpose of preventing the reagent from dripping outside the reaction test tube 3 and avoiding the corrosiveness of the reagent from harming the instrument and the human body is achieved.

[0024] As a technical optimization solution of the present utility model, positioning holes 16 are provided at the lower end of the connecting plate 7 and are respectively located on the left and right sides of the through hole 8, and positioning rods 17 that are respectively fixed to the upper end of the limiting ring 18 and extend into the two positioning holes 16 and match with them are provided.

[0025] In this embodiment: By providing two positioning holes 16 and two positioning rods 17, the position of the limiting ring 18 can be positioned conveniently.

[0026] As a technical optimization solution of the present utility model, both the front and rear sides of the inner wall of the sliding disk 12 and the outer threaded cylinder 9 are slidably connected through chutes.

[0027] In this embodiment: By providing two chutes, the sliding stability of the sliding disk 12 can be improved conveniently.

[0028] As a technical optimization solution of the present utility model, a knob 14 is fixedly connected to the upper end of the screw rod 13, and anti-slip lines are provided on the outer wall of the knob 14.

[0029] In this embodiment: By providing the knob 14, the screw rod 13 can be rotated conveniently, and the anti-slip effect can be achieved when rotating the knob 14 through the anti-slip lines.

[0030] As a technical optimization solution of the present utility model, anti-slip lines are provided on the outer wall of the internal thread ring 15.

[0031] In this embodiment: By providing the anti-slip lines, the anti-slip effect when rotating the internal thread ring 15 can be improved further.

[0032] As a technical optimization solution of the present utility model, a liquid level line is provided on the outer wall of the sampling cylinder 10.

[0033] In this embodiment: By providing the liquid level line, the liquid level inside the sampling cylinder 10 can be controlled by observing the liquid level line conveniently.

[0034] As a technical optimization solution of the present utility model, mounting brackets are fixedly connected to both the left and right sides of the lower end face of the support plate 1.

[0035] In this embodiment: By providing two mounting brackets, the device can be installed and fixed conveniently to improve the stability of use.

[0036] Working principle: When in use, first insert the external thread cylinder 9 from the lower side of the connecting plate 7 into the inside of the through hole 8, and make the two positioning rods 17 enter the inside of the two positioning holes 16 respectively. Then screw the internal thread ring 15 onto the outer wall of the external thread cylinder 9 until the internal thread ring 15 presses against the upper end of the connecting plate 7, and forces the limiting ring 18 to press against the lower end of the connecting plate 7, so as to complete the fixation of the external thread cylinder 9 and the sampling cylinder 10. Then drive the connecting plate 7 to move downward through the electric telescopic rod 6, and at the same time drive the external thread cylinder 9, the sampling cylinder 10 and the sampling head 19 to move downward, so that the sampling head 19 can extend into the reagent cup 2. Then rotate the screw rod 13 by turning the knob 14, and drive the sliding disk 12 to move upward, and at the same time drive the connecting rod 22 and the piston 11 to move upward, so as to draw the reagent in the reagent cup 2 into the inside of the sampling cylinder 10. Then move the sampling head 19 upward and position it above the reagent cup 2. Then drive the turntable 4 to rotate 180 degrees through the servo motor 5, and at the same time drive the electric telescopic rod 6, the connecting plate 7, the external thread cylinder 9, the sampling cylinder 10 and the sampling head 19 to rotate 180 degrees. At this time, since the first positioning cylinder 20 and the second positioning cylinder 21 position the reagent cup 2 and the reaction test tube 3 respectively, the sampling head 19 can be rotated to the upper part of the center position inside the reaction test tube 3. Then move the sampling head 19 downward and extend it into the inside of the reaction test tube 3, and make the piston 11 move downward, so that the reagent can be dropped into the inside of the reaction test tube 3. Thus, by this method, it can prevent the reagent from dripping outside the reaction test tube 3, and further avoid the corrosiveness of the reagent from causing harm to the instrument and the human body.

[0037] The above is only the preferred embodiment of the present invention, and it is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A chemical reagent sampler, comprising a support plate (1) and a reagent cup (2) and a reaction tube (3) respectively located on the left and right sides of the upper end surface of the support plate (1), characterized in that: The upper side of the support plate (1) is rotatably connected to a turntable (4) located between the reagent cup (2) and the reaction tube (3); the turntable (4) is driven by a servo motor (5) installed on the lower side of the support plate (1); an electric telescopic rod (6) is installed on the upper end of the turntable (4); the output end of the electric telescopic rod (6) is fixedly connected to a connecting plate (7); a through hole (8) is formed through the upper end surface of the connecting plate (7); an external threaded barrel (9) is arranged inside the through hole (8); a limiting ring (18) abutting against the lower side of the connecting plate (7) is fixedly connected to the outer wall of the external threaded barrel (9); an internal threaded ring (15) abutting against the upper end of the connecting plate (7) is threadedly connected to the outer wall of the external threaded barrel (9); a sampling barrel (10) is installed at the lower end of the external threaded barrel (9); a sampling head (19) extending into the interior of the reagent cup (2) is installed at the lower end of the sampling barrel (10); The upper end of the support plate (1) is fixedly connected with a first positioning cylinder (20) and a second positioning cylinder (21) which are respectively fitted with the outer walls of the reagent cup (2) and the reaction tube (3); A screw rod (13) passes through and is threadedly connected to the upper end of the externally threaded barrel (9); the lower end of the screw rod (13) is rotatably connected to a sliding disk (12); the lower end of the sliding disk (12) is fixedly connected to a connecting rod (22); the lower end of the connecting rod (22) is fixedly connected to a piston (11) located inside the sampling barrel (10).

2. A chemical reagent sampler according to claim 1, characterized in that: The lower end of the connecting plate (7) is provided with positioning holes (16) respectively located on the left and right sides of the through hole (8), and the upper end of the limiting ring (18) is fixedly connected with positioning rods (17) respectively extending into the inside of the two positioning holes (16) and matching therewith.

3. A chemical reagent sampler according to claim 1, characterized in that: The sliding plate (12) is slidably connected to the front and rear sides of the inner wall of the external threaded cylinder (9) via sliding grooves.

4. A chemical reagent sampler according to claim 1, characterized in that: The upper end of the screw rod (13) is fixedly connected with a knob (14), and the outer wall of the knob (14) is provided with anti-slip grooves.

5. A chemical reagent sampler according to claim 1, characterized in that: The outer wall of the inner thread ring (15) is provided with anti-slip grooves.

6. A chemical reagent sampler according to claim 1, characterized in that: The outer wall of the sampling cylinder (10) is provided with a liquid level line.

7. A chemical reagent sampler according to claim 1, characterized in that: The left and right sides of the lower end surface of the support plate (1) are fixedly connected with mounting frames.

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