Capping device for ion chromatography sample injection bottle

Abstract

The utility model discloses an ion chromatography sample introduction bottle capping device which comprises a sample bottle rack and a sample introduction head rack, the sample bottle rack and the sample introduction head rack respectively comprise an inner cylinder and an outer cylinder which are sleeved inside and outside, and the inner cylinders of the sample bottle rack and the sample introduction head rack are in clearance fit with bottle bodies of sample bottles. An up-down through overflow channel is arranged between the inner cylinder of the sample bottle rack and the outer cylinder of the sample bottle rack, an overflow port is arranged at the top of the inner cylinder of the sample introduction head rack corresponding to the sample introduction hole, and an overflow channel communicated with the overflow port is arranged between the inner cylinder and the outer cylinder of the sample introduction head rack; and the overflow channels of the sample bottle rack and the sample introduction head rack are communicated when the sample bottle rack and the sample introduction head rack are closed. According to the capping device disclosed by the utility model, in the capping process, redundant samples in the sample bottles flow out through the overflow ports in the top of the sample introduction head frame and the overflow channels of the sample introduction head frame and the sample bottle frame, so that the samples in the sample bottles are prevented from being splashed to hands or bodies of workers, and the physical and psychological health of the workers is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of ion chromatography sample pretreatment, in particular to an ion chromatography injection bottle capping device. Background Art

[0002] Ion chromatographs are common chemical testing instruments with a wide range of applications. Due to the special properties of ions, the sample to be tested is usually placed in a sample injection bottle beforehand, and then the sample injection bottle is placed in the designated position of the ion chromatograph for testing.

[0003] The injection bottle includes a sample bottle and an injection head. The top of the injection head is provided with an injection hole. During use, the injection head is gradually pressed from the upper end opening of the sample bottle into the bottom and clamped. Existing ion chromatography injection bottles are usually capped manually. During the capping process, the following problems exist:

[0004] During the capping process, if there is air in the sample bottle, the injection volume will be inaccurate, resulting in measurement errors, low measurement values, and the liquid level in the sample bottle will be difficult to control. When capping, excess liquid in the sample bottle may splash out from the injection hole on the top of the injection head and splash onto the hands or body of the staff; since the liquid in the sample may be toxic and harmful substances such as cyanide, hydroxylamine, and thiol, there is a certain risk to the physical and mental health of the staff; and manual capping is relatively cumbersome, and it takes a long time when sampling quality inspection in the production workshop or batch capping is required for research and development testing of experimental samples, which affects work efficiency.

[0005] Therefore, providing an ion chromatography injection bottle capping device that is easy to operate, safe and reliable is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0006] The utility model aims to provide an ion chromatography injection bottle capping device, which avoids the risk of sample splashing due to excessive pressure during the capping process, thereby effectively protecting workers from potential chemical substances.

[0007] In order to achieve the above-mentioned purpose of the invention, the technical solution of the present utility model is as follows:

[0008] An ion chromatography injection bottle capping device comprises a sample bottle rack and an injection head rack, wherein the sample bottle rack and the injection head rack respectively comprise an inner cylinder and an outer cylinder which are arranged inside and outside, the inner cylinders of the sample bottle rack and the sample head rack are clearance-matched with the sample bottle body, a lower overflow channel which passes through from top to bottom is provided between the inner cylinder of the sample bottle rack and the outer cylinder of the sample bottle rack, an overflow port is provided at a position corresponding to the injection hole at the top of the inner cylinder of the injection head rack, an upper overflow channel which is connected to the overflow port is provided between the inner cylinder and the outer cylinder of the injection head rack, the upper overflow channel and the lower overflow channel are connected when the sample bottle rack and the injection head rack are closed, and the diameter of the upper overflow channel is smaller than that of the lower overflow channel.

[0009] Furthermore, the ion chromatography injection bottle capping device also includes a sample tray, which includes a bottom plate and a top plate. The bottom plate and the top plate are respectively provided with multiple grooves at corresponding positions. The grooves of the bottom plate are interference fit with the outer cylinder of the sample bottle rack, and the grooves of the top plate are interference fit with the outer cylinder of the injection head rack.

[0010] Disclosed is an ion chromatography injection bottle capping device, comprising a sample tray, which comprises a bottom tray and a top tray. The top tray and the bottom tray are respectively provided with a plurality of grooves at corresponding positions. The grooves of the bottom tray and the top tray are gap-matched with the injection bottle. An overflow port is provided at a position corresponding to the injection hole at the top of the groove of the top tray. An upper overflow channel connected to the overflow port is provided next to the groove of the top tray. A lower overflow channel running vertically is provided next to the groove of the bottom tray at a position corresponding to the upper overflow channel. The upper overflow channel and the lower overflow channel are connected when the bottom tray and the top tray are closed, and the diameter of the upper overflow channel is smaller than that of the lower overflow channel.

[0011] Furthermore, a waste liquid tray is provided at the bottom of the sample tray.

[0012] A guide pin is provided on the top of the chassis, and a guide pin hole is provided on the bottom of the top chassis to match the guide pin. The mutual cooperation between the guide pin and the guide pin hole facilitates the alignment of the chassis and the top chassis.

[0013] Handles are provided on both sides of the top plate to facilitate the closing of the top plate and the bottom plate.

[0014] Beneficial effects of the utility model:

[0015] 1. In the present invention, by providing a sample bottle rack and an injection head rack, during sample pretreatment, the sample bottle is placed in the sample bottle rack, the sample to be tested is added, the injection head is placed on the sample bottle, and the sample bottle rack and the injection head rack are closed to complete the capping of the ion chromatography injection bottle. During the capping process, the excess sample in the sample bottle flows through the overflow port on the top of the injection head rack and flows out through the upper overflow channel and the lower overflow channel, thereby preventing the sample in the sample bottle from splashing onto the hands or body of the staff, thereby protecting the physical and mental health of the staff.

[0016] 2. In the present invention, a sample tray is provided, and a plurality of grooves are provided at corresponding positions on the bottom plate and the top plate of the sample tray. During the capping process, the sample bottle rack and the injection head rack are placed in the bottom plate and the top plate respectively. After the sample is added to the injection bottle, multiple sample bottles can be capped at the same time, thereby improving work efficiency.

[0017] 3. In the present invention, a waste liquid tray is provided at the bottom of the sample tray, and the sample overflowing from the sample bottle flows into the bottom sample tray through the overflow channel, which facilitates waste liquid treatment and prevents contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the ion chromatography injection bottle capping device in Example 1 of the present utility model.

[0019] Figure 2 This is a schematic diagram of the sample tray structure of the ion chromatography injection bottle capping device in Example 2 of the present utility model.

[0020] Figure 3 This is a schematic structural diagram of the ion chromatography injection bottle capping device in Example 5 of the present utility model.

[0021] Among them, 1. Sample bottle rack; 2. Injection head rack; 3.1. Upper overflow channel; 3.2. Lower overflow channel; 4. Overflow port; 5. Sample tray; 6. Bottom tray; 7. Top tray; 8. Waste liquid tray. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the embodiments, but the embodiments of the present invention are not limited thereto.

[0023] Example 1

[0024] like Figure 1 As shown, this embodiment provides an ion chromatography injection bottle capping device, including a sample bottle rack 1 and an injection head rack 2, the sample bottle rack 1 and the injection head rack 2 respectively include an inner cylinder and an outer cylinder arranged inside and outside, the inner cylinders of the sample bottle rack 1 and the sample head rack are clearance-matched with the sample bottle body, a lower overflow channel 3.2 is provided between the inner cylinder of the sample bottle rack 1 and the outer cylinder of the sample bottle rack 1, and an overflow port 4 is provided at the top of the inner cylinder of the injection head rack 2 corresponding to the injection hole. An upper overflow channel 3.1 connected to the overflow port 4 is provided between the inner cylinder and the outer cylinder of the injection head rack 2. The upper overflow channel 3.1 and the lower overflow channel 3.2 are connected when the sample bottle rack 1 and the injection head rack 2 are closed, and the diameter of the upper overflow channel 3.1 is smaller than the diameter of the lower overflow channel 3.2.

[0025] The injection bottle comprises a sample bottle and an injection head. The top of the injection head is provided with an injection hole. When the injection bottle is in use, the injection head is gradually pressed from the upper end opening of the sample bottle into the bottom and clamped.

[0026] In this embodiment, during sample pretreatment, the sample bottle is placed in the sample bottle rack 1 and the sample to be tested is added, the injection head is placed on the sample bottle, and the sample bottle rack 1 and the injection head rack 2 are closed to complete the capping of the ion chromatography injection bottle. During the capping process, the excess sample in the sample bottle flows through the overflow port 4 at the top of the injection head rack 2 through the upper overflow channel and the lower overflow channel to flow out, avoiding the risk of splashing of the sample due to excessive pressure during the capping process, thereby effectively protecting the staff from the invasion of potential chemical substances.

[0027] Example 2

[0028] like Figure 2 As shown, this embodiment differs from Example 1 in that, in this embodiment, the ion chromatography injection bottle capping device further includes a sample tray 5, which includes a bottom tray 6 and a top tray 7. The bottom tray 6 and the top tray 7 are respectively provided with a plurality of grooves at corresponding positions. The grooves of the bottom tray 6 are interference fit with the outer cylinder of the sample bottle holder 1, and the grooves of the top tray 7 are interference fit with the outer cylinder of the injection head holder 2. The remaining structure is the same as that of Example 1.

[0029] In this embodiment, the bottom plate 6 and the top plate 7 of the sample tray 5 are respectively provided with a plurality of grooves at corresponding positions. During the capping process, the sample bottle rack 1 and the injection head rack 2 are respectively placed in the bottom plate 6 and the top plate 7. After the sample is added to the injection bottle, the capping can be completed for multiple sample bottles at the same time, thereby improving work efficiency.

[0030] Example 3

[0031] The difference between this embodiment and embodiment 2 is that, in this embodiment, a waste liquid tray 8 is provided at the bottom of the sample tray 5 , and the rest of the structure is the same as that of embodiment 2.

[0032] In this embodiment, by arranging a waste liquid tray 8 at the bottom of the sample tray 5, the sample overflowing from the sample bottle flows into the bottom sample tray 5 through the overflow channel 3, which facilitates waste liquid treatment and prevents contamination.

[0033] Example 4

[0034] The difference between this embodiment and embodiment 2 is that, in this embodiment, a guide pin is provided at the top of the chassis 6, a guide pin hole is provided at the bottom of the top plate 7 to fit the guide pin gap, handles are provided on both sides of the top plate, and the rest of the structure is the same as that of embodiment 2.

[0035] In this embodiment, the mutual cooperation between the guide pins and the guide pin holes facilitates the alignment of the bottom plate 6 and the top plate 7 , and the handle facilitates the closing of the top plate 7 and the bottom plate 6 .

[0036] Example 5

[0037] like Figure 3As shown, this embodiment provides an ion chromatography injection bottle capping device, including a sample tray 5, the sample tray 5 includes a bottom plate 6 and a top plate 7, the top plate 7 and the bottom plate 6 are respectively provided with multiple grooves at corresponding positions, the grooves of the bottom plate 6 and the top plate 7 are gap-matched with the injection bottle, an overflow port 4 is provided at the top of the groove of the top plate 7 corresponding to the injection hole, an upper overflow channel 3.1 connected to the overflow port 4 is provided next to the groove of the top plate 7, a lower overflow channel 3.2 running through from top to bottom is provided next to the groove of the bottom plate 6 at a position corresponding to the upper overflow channel 3.1, the upper overflow channel 3.1 and the lower overflow channel 3.2 are connected when the bottom plate 6 and the top plate 7 are closed, and the diameter of the upper overflow channel 3.1 is smaller than the diameter of the lower overflow channel 3.2.

[0038] In this embodiment, a plurality of grooves that fit the gaps between the bodies of the sampling bottles are respectively provided at corresponding positions on the bottom plate and the top plate 7 of the sample tray 5. An overflow port 4 is provided on the top of the groove, and an overflow channel 3 is provided next to the groove. During sample pretreatment, the sampling bottle is placed in the bottom plate 6. After adding the sample, the injection head is placed on the sampling bottle. The bottom plate 6 and the top plate 7 are closed to complete the capping of the sampling bottle. During the capping process, the excess sample flows through the overflow port 4, the overflow channel 3 of the top plate 7 and the bottom plate 6, and finally flows out from the bottom of the bottom plate 6.

[0039] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. An ion chromatography injection bottle capping device, characterized in that: The invention comprises a sample bottle rack (1) and an injection head rack (2), wherein the sample bottle rack (1) and the injection head rack (2) respectively comprise an inner cylinder and an outer cylinder which are arranged inside and outside, the inner cylinders of the sample bottle rack (1) and the sample head rack are clearance-matched with the sample bottle body, a lower overflow channel (3.2) which is passed through from top to bottom is provided between the inner cylinder of the sample bottle rack (1) and the outer cylinder of the sample bottle rack (1), an overflow port (4) is provided at the top of the inner cylinder of the injection head rack (2) corresponding to the injection hole, an upper overflow channel (3.1) which is connected to the overflow port (4) is provided between the inner cylinder and the outer cylinder of the injection head rack (2), the upper overflow channel (3.1) and the lower overflow channel (3.2) are connected when the sample bottle rack (1) and the injection head rack (2) are closed, and the diameter of the upper overflow channel (3.1) is smaller than the diameter of the lower overflow channel (3.2).

2. The capping device according to claim 1, characterized in that: The ion chromatography injection bottle capping device further comprises a sample tray (5), the sample tray (5) comprising a bottom tray (6) and a top tray (7), the bottom tray (6) and the top tray (7) respectively being provided with a plurality of grooves at corresponding positions, the grooves of the bottom tray (6) being interference fit with the outer cylinder of the sample bottle holder (1), and the grooves of the top tray (7) being interference fit with the outer cylinder of the injection head holder (2).

3. An ion chromatography injection bottle capping device, characterized in that: The sample tray (5) comprises a bottom tray (6) and a top tray (7), wherein the top tray (7) and the bottom tray (6) are respectively provided with a plurality of grooves at corresponding positions, the grooves of the bottom tray (6) and the top tray (7) are clearance-matched with the injection bottle, an overflow port (4) is provided at the top of the groove of the top tray (7) and at a position corresponding to the injection hole, an upper overflow channel (3.1) communicating with the overflow port (4) is provided next to the groove of the top tray (7), a lower overflow channel (3.2) passing through from top to bottom is provided next to the groove of the bottom tray (6) and at a position corresponding to the upper overflow channel (3.1), the upper overflow channel (3.1) and the lower overflow channel (3.2) are connected when the bottom tray (6) and the top tray (7) are closed, and the diameter of the upper overflow channel (3.1) is smaller than the diameter of the lower overflow channel (3.2).

4. The capping device according to claim 2 or 3, characterized in that: A waste liquid tray (8) is provided at the bottom of the sample tray (5).

5. The capping device according to claim 2 or 3, characterized in that: A guide pin is provided on the top of the bottom plate (6), and a guide pin hole is provided on the bottom of the top plate (7) to fit the guide pin.

6. The capping device according to claim 2 or 3, characterized in that: Handles are provided on both sides of the top plate (7).

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