Automatic sampler

Abstract

The utility model discloses an automatic sampler and belongs to the technical field of samplers. The automatic sampler comprises a manipulator, a gas cylinder, a sampling bag, a first valve, a second valve and a one-way valve; the gas cylinder is connected to the output end of the manipulator; the sampling bag is arranged in the gas cylinder; the first valve is fixedly arranged on the gas cylinder, when the first valve is opened, the gas cylinder is communicated with the outside through the first valve, and the first valve can be connected with a gas extractor to extract gas from the gas cylinder; the second valve and the one-way valve are arranged on the gas cylinder, and when the second valve is opened, the sample enters the sampling bag sequentially through the second valve and the one-way valve; the second valve is a pressing type valve, and when a pressing switch of the second valve is pressed down, the second valve is opened, so that automatic sampling is realized, the labor cost is saved, and personnel are prevented from being hurt.

Description

TECHNICAL FIELD

[0001] The utility model relates to sampler technical field especially, relate to an automatic sampler. BACKGROUND

[0002] Sampler is used for sampling gas or liquid sample. In the related art, the sampler includes a container and a power structure, and a person operates the power structure to draw the sample into the container to realize manual sample sampling. However, on the one hand, the labor cost is increased; on the other hand, when the sampling environment is poor, the person carries the sampler to sample the sample, which has the risk of being injured. SUMMARY

[0003] The utility model discloses a kind of automatic samplers, realize automatic sampling, save labor cost, and avoid being injured.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] An automatic sampler, comprising:

[0006] A mechanical hand;

[0007] A gas cylinder connected to the output end of the mechanical hand;

[0008] A sampling capsule arranged in the gas cylinder;

[0009] A first valve fixedly arranged in the gas cylinder, when the first valve is opened, the gas cylinder is communicated with the outside through the first valve, and the first valve can be connected to a gas suction device to suck gas from the gas cylinder;

[0010] A second valve and a one-way valve are arranged in the gas cylinder, when the second valve is opened, the sample sequentially passes through the second valve and the one-way valve into the sampling capsule;The second valve is a press valve, and when the press switch of the second valve is pressed, the second valve is opened.

[0011] In some possible embodiments, a gas pressure gauge is further included, which is arranged in the gas cylinder and used for measuring the gas pressure in the gas cylinder.

[0012] In some possible embodiments, a three-way joint is further included, and the first valve, the gas pressure gauge and the gas cylinder are respectively connected to three interfaces of the three-way joint.

[0013] In some possible embodiments, the gas cylinder includes a bottle body and a bottle cap arranged at the bottle mouth of the bottle body, the bottle cap includes a first hole and a second hole, the sampling capsule is arranged in the bottle body and connected to the bottle cap, the first hole communicates the sampling capsule and the one-way valve, and the second hole communicates the three-way joint and the bottle body.

[0014] In some possible implementation manners, the opening of the sampling capsule is detachably connected with the bottle cap.

[0015] In some possible implementation manners, the outer surface of the sampling capsule is provided with a protrusion.

[0016] In some possible implementation manners, the bottle body comprises an upper bottle body and a lower bottle body which are detachably connected.

[0017] In some possible implementation manners, a bushing is further arranged between the bottle body and the sampling capsule.

[0018] In some possible implementation manners, the one-way valve is connected to the circumferential side of the bottle cap.

[0019] In some possible implementation manners, a connecting assembly is further included, the output end of the mechanical hand is two openable and closable fingers, the connecting assembly comprises a connecting piece and two annular handles, the connecting piece passes through the handles to connect the handles to the outer side of the gas cylinder, and the two fingers can be correspondingly inserted into the two handles and can support the two handles.

[0020] The automatic sampler has the advantages that:

[0021] The automatic sampler provided by the present application opens the first valve, the air extraction device extracts air from the gas cylinder until the sampling capsule in the gas cylinder is in a compressed state. The mechanical hand carries the gas cylinder to a preset sampling position, and the mechanical hand impacts the pressing switch of the second valve to the ground, a wall or any position by an impact mode, so that the pressing switch is in a depressed state, and the second valve is opened. Since the sampling capsule is in a compressed state, when the second valve is opened, the external pressure is greater than the internal pressure of the sampling capsule, the sample enters the sampling capsule through the second valve and the one-way valve, automatic sampling is realized, labor cost is saved, and personnel are prevented from being injured. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of the automatic sampler provided by the embodiment of the present application;

[0023] Figure 2 is a front view of the automatic sampler provided by the embodiment of the present application;

[0024] Figure 3 is Figure 2 the B-B sectional view of

[0025] In the drawings:

[0026] 1. Cylinder; 11. Cylinder body; 111. Upper cylinder body; 112. Lower cylinder body; 12. Cylinder cap; 121. First hole; 1211. Second radial hole; 122. Second hole; 1221. First radial hole; 2. Sampling capsule; 21. Protrusion; 3. First valve; 4. Second valve; 41. Pressing switch; 5. One-way valve; 6. Pressure gauge; 7. Three-way joint; 9. Connecting assembly; 91. Connecting piece; 92. Handle. DETAILED DESCRIPTION

[0027] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects reached more clear, the technical solutions of the embodiments of the present application will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] In the description of the present application, unless explicitly defined and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] In the present application, unless explicitly defined and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0030] As Figures 1-3As shown, the embodiment provides an automatic sampler, which comprises a mechanical arm, a gas cylinder 1, a sampling capsule 2, a first valve 3, a second valve 4 and a one-way valve 5. The gas cylinder 1 is connected to the output end of the mechanical arm; the sampling capsule 2 is arranged in the gas cylinder 1; the first valve 3 is fixedly arranged in the gas cylinder 1, when the first valve 3 is opened, the gas cylinder 1 is in communication with the outside through the first valve 3, and the first valve 3 can be connected to a gas extraction device to extract gas from the gas cylinder 1; the second valve 4 and the one-way valve 5 are arranged in the gas cylinder 1, when the second valve 4 is opened, the sample enters the sampling capsule 2 through the second valve 4 and the one-way valve 5 in turn. The second valve 4 is a press valve, when the press switch 41 of the second valve 4 is in a depressed state, the second valve 4 is opened.

[0031] Before sampling, the gas extraction device is installed with the first valve 3, the first valve 3 is opened, the gas extraction device extracts gas from the gas cylinder 1, until the sampling capsule 2 in the gas cylinder 1 is in a compressed state. The mechanical arm carries the gas cylinder 1 to move to a preset sampling position, the mechanical arm impacts the press switch 41 of the second valve 4 to the ground, wall or any position by impact mode, so that the press switch 41 is in a depressed state, the second valve 4 is opened; since the sampling capsule 2 is in a compressed state, when the second valve 4 is opened, the pressure of the outside is greater than the pressure inside the sampling capsule 2, the sample is taken into the sampling capsule 2 through the second valve 4 and the one-way valve 5, the sampling of the sample is realized, and the sample is exemplarily a liquid or a gas. Through the above structure, automatic sampling is realized, labor cost is saved, and personnel is avoided from being injured. Exemplarily, the mechanical arm is a mobile robot.

[0032] The automatic sampler further comprises a gas pressure gauge 6, which is arranged in the gas cylinder 1 and is used for measuring the gas pressure in the gas cylinder 1. When the gas extraction device extracts gas from the gas cylinder 1, the gas pressure gauge 6 is used for monitoring the pressure in the gas cylinder 1, and when the preset pressure is reached, the gas extraction device stops extracting gas. The automatic sampler further comprises a three-way joint 7, the first valve 3, the gas pressure gauge 6 and the gas cylinder 1 are respectively connected to three interfaces of the three-way joint 7, through the three-way joint 7, the above structure is avoided from being directly connected to the gas cylinder 1, and the structure of the gas cylinder 1 is simplified.

[0033] The gas cylinder 1 comprises a bottle body 11 and a bottle cap 12 arranged at the bottle opening of the bottle body 11, the bottle cap 12 comprises a first hole 121 and a second hole 122, the sampling capsule 2 is arranged in the bottle body 11 and is connected to the bottle cap 12, the first hole 121 is in communication with the sampling capsule 2 and the one-way valve 5, and the second hole 122 is in communication with the three-way joint 7 and the bottle body 11, so that the sampling capsule 2 and the gas cylinder 1 are respectively in communication with the outside. Optionally, there is a sealing ring between the bottle body 11 and the bottle cap 12, so as to ensure the sealing property of the gas cylinder 1.

[0034] Optionally, the three-way joint 7 is arranged on the top of the bottle cap 12, the first valve 3 and the pressure gauge 6 are connected to the circumferential side of the three-way joint 7, the second valve 4 is connected to the circumferential side of the three-way joint 7, and the pressing switch 41 is located on the top of the second valve 4 and protrudes from all structures on the top of the automatic sampler, that is, the pressing switch 41 is located at the highest position of the automatic sampler. When the mechanical hand drives the pressing switch 41 to collide with the external structure, it prevents other structures from being impacted. The second hole 122 includes a vertical hole arranged along the length direction of the bottle cap 12 and a first radial hole 1221 arranged along the radial direction, and the vertical hole and the first radial hole 1221 are communicated. The vertical hole is connected to the outside to connect with the three-way joint 7. The bottle cap 12 is at least partially inserted into the bottle body 11, so that the first radial hole 1221 is communicated with the inside of the bottle body 11.

[0035] Optionally, the first hole 121 includes a light perforation penetrating along the length direction of the bottle cap 12 and a second radial hole 1211 arranged along the radial direction of the bottle cap 12, and the one-way valve 5 is connected to the circumferential side of the bottle cap 12 through the second radial hole 1211.

[0036] The bottle body 11 includes an upper bottle body 111 and a lower bottle body 112 which are detachably connected. After sampling, the upper bottle body 111 and the lower bottle body 112 are opened to expose the sampling capsule 2, so as to take out the sample from the sampling capsule 2.

[0037] The opening of the sampling capsule 2 is detachably connected with the bottle cap 12, which facilitates the disassembly and assembly of the sampling capsule 2, and sampling can be performed at the opening of the sampling capsule 2. One end of the bottle cap 12 is inserted into the bottle body 11, which facilitates the installation with the sampling capsule 2. Exemplarily, the sampling capsule 2 is inserted into the bottle cap 12.

[0038] The outer surface of the sampling capsule 2 is provided with a protrusion 21. During sampling, the protrusion 21 is pinched, a hole is cut on the protrusion 21 by scissors, and the protrusion 21 is inserted into a sampling container. The sample in the sampling capsule 2 enters the sampling container through the hole. By arranging the protrusion 21, the sampling capsule 2 is conveniently docked with the sampling container, and leakage is prevented.

[0039] The first valve 3 can also be selectively connected to an inflation device. The inflation device inflates the gas cylinder 1, so that there is a gap between the sampling capsule 2 and the inner wall of the gas cylinder 1, so as to open the lower bottle body 112 and the upper bottle body 111, and take out the sampling capsule 2.

[0040] The automatic sampler further includes a bushing (not shown in the figure), which is sleeved on the sampling capsule 2 and located between the bottle body 11 and the sampling capsule 2. The bushing can be taken out from the bottle body 11 together with the sampling capsule 2, which prevents the sampling capsule 2 from being sampled too much, causing the sampling capsule 2 and the bottle body 11 to be squeezed, the friction between them being too large, and the sampling capsule 2 being difficult to be taken out.

[0041] The automatic sampler further comprises a connecting assembly 9, the output end of the mechanical hand is two openable fingers, the connecting assembly 9 comprises a connecting piece 91 and two annular handles 92, the connecting piece 91 passes through the handles 92 to connect the handles 92 to the outer side of the gas cylinder 1, and the two fingers can correspondingly extend into the two handles 92 and can support the two handles 92. Specifically, the connecting piece 91 is a cable tie, and the two handles 92 are connected to the bottle body 11 through one or more cable ties.

[0042] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments are not required to be exhausted. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An autosampler characterized in that, The utility model relates to a sampling device for sampling liquid sample, comprising: a mechanical hand; a gas cylinder (1) connected to the output end of the mechanical hand; a sampling capsule (2) arranged in the gas cylinder (1); a first valve (3) fixedly arranged in the gas cylinder (1), when the first valve (3) is opened, the gas cylinder (1) is in communication with the outside through the first valve (3), and the first valve (3) can be connected to a gas extraction device to extract gas from the gas cylinder (1); a second valve (4) and a one-way valve (5) arranged in the gas cylinder (1), when the second valve (4) is opened, the sample enters the sampling capsule (2) through the second valve (4) and the one-way valve (5) in sequence; the second valve (4) is a press valve, and the second valve (4) is opened when the press switch (41) of the second valve (4) is pressed.

2. The autosampler of claim 1, wherein, Further comprising a gas pressure gauge (6) arranged in the gas cylinder (1) for measuring the gas pressure in the gas cylinder (1).

3. The autosampler of claim 2, wherein, Further comprising a three-way joint (7), the first valve (3), the gas pressure gauge (6) and the gas cylinder (1) are respectively connected to three interfaces of the three-way joint (7).

4. The autosampler of claim 3, wherein, The gas cylinder (1) comprises a bottle body (11) and a bottle cap (12) arranged at the bottle opening of the bottle body (11), the bottle cap (12) comprises a first hole (121) and a second hole (122), the sampling capsule (2) is arranged in the bottle body (11) and connected to the bottle cap (12), the first hole (121) is in communication with the sampling capsule (2) and the one-way valve (5), and the second hole (122) is in communication with the three-way joint (7) and the bottle body (11).

5. The autosampler of claim 4, wherein, The opening of the sampling capsule (2) is detachably connected to the bottle cap (12).

6. The autosampler of claim 4, wherein, The outer surface of the sampling capsule (2) is provided with a protrusion (21).

7. The autosampler of claim 4, wherein, The bottle body (11) comprises an upper bottle body (111) and a lower bottle body (112) which are detachably connected.

8. The autosampler of claim 7, wherein, Further comprising a bushing arranged between the bottle body (11) and the sampling capsule (2).

9. The autosampler of claim 4, wherein, The one-way valve (5) is connected to the circumferential side of the bottle cap (12).

10. The automatic sampler of any one of claims 1-9, wherein, Further comprising a connecting assembly (9), the output end of the mechanical hand is two openable and closable fingers, the connecting assembly (9) comprises a connecting piece (91) and two annular handles (92), the connecting piece (91) passes through the handles (92) to connect the handles (92) to the outer side of the gas cylinder (1), and two fingers can be inserted into two handles (92) and can support two handles (92).

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