Suction type sampling device

Abstract

The utility model provides a suction type sampling device which comprises a negative pressure assembly, a negative pressure head connected to one side of the negative pressure assembly and an adapter connected to one end of the negative pressure head, the two sides of the adapter are detachably connected with a sampling bottle and a suction head respectively, one side of the adapter is provided with a negative pressure pipe, and the negative pressure pipe is used for connecting the negative pressure head and the sampling bottle. A sampling tube is arranged on the other side of the adapter and used for being connected with a suction head and a sampling bottle, and an anti-overflow cavity is formed in the inner side of the negative pressure head; according to the utility model, the convenience of on-site sampling is improved, and samples in the sampling tube can be prevented from overflowing into the negative pressure component.

Description

TECHNICAL FIELD

[0001] The utility model relates to sampling equipment field especially, it relates to a suction type sampling device. BACKGROUND

[0002] In part criminal investigation, medical science, water quality etc. on-site detection, usually need to sample and keep the granular material, powder, hair, liquid etc. left in the scene, in order to provide subsequent laboratory detection step, and the existing sampling equipment usually adopts pincers to take to the packaging bag, or negative pressure equipment directly connects sampling bottle and carries out sampling operation, and pincers take the mode and is difficult to sample liquid, powder etc. material, and negative pressure equipment directly connects sampling bottle and is easy to appear the problem of powder into negative pressure equipment. UTILITY MODEL CONTENTS

[0003] The utility model discloses a kind of suction type sampling devices, which can improve the convenience of on-site sampling, and avoid sample overflow in sampling tube into negative pressure component.

[0004] To solve the above technical problems, the utility model provides a suction type sampling device, including negative pressure component, the negative pressure head connected to one side of negative pressure component, the adapter connected to one end of negative pressure head, the sampling bottle and the suction head are detachably connected on the both sides of adapter, the negative pressure pipe is arranged on one side of adapter, the negative pressure pipe is used to connect negative pressure head and sampling bottle, the sampling tube is arranged on the other side of adapter, the sampling tube is used to connect suction head and sampling bottle, and the inside of negative pressure head is provided with anti-overflow cavity.

[0005] Further, the negative pressure head side is provided with a connecting frame, a plurality of connecting ports are formed in the connecting frame, and the bottle opening of the sampling bottle is matched with the connecting port.

[0006] Further, the side of the connecting frame close to the negative pressure head is provided with a positioning groove, and the protective pad is clamped in the positioning groove, so that when the sampling bottle is connected to the connecting port, the bottle opening of the sampling bottle abuts against the protective pad.

[0007] Further, the side of the protective pad close to the opening of the positioning groove is provided with a material taking piece.

[0008] Further, the suction port of the negative pressure component is extended and arranged inside the negative pressure head, and the suction port is eccentrically arranged relative to the negative pressure head, the inside of the negative pressure head is provided with an air inlet pipe, and the air inlet pipe is located at the center position inside the negative pressure head and communicated to the adapter.

[0009] Further, the negative pressure head and the adapter are connected with a sealing element, the air inlet pipe is communicated to the sealing element, and the negative pressure pipe is clamped in the sealing element.

[0010] Further, the sampling tube end extends to the lower side inside the sampling bottle, and one end of the negative pressure tube is located at the top inside the sampling bottle.

[0011] Further, the sampling bottle and the adapter, and the sampling bottle and the connecting port are in threaded cooperation.

[0012] Further, the suction head and the adapter are in interference fit.

[0013] Further, the bottom inside the sampling bottle is conical.

[0014] The beneficial effects of the utility model lie in that: after the sampling bottle and the suction head are respectively installed to the corresponding positions on the two sides of the connecting head, the connecting head is connected to the negative pressure head, at this time, the sampling tube is communicated with the suction head and the sampling bottle, and the negative pressure tube is communicated with the negative pressure head and the sampling bottle, so that when the negative pressure assembly starts to suck, the suction force can be generated at the suction head through the negative pressure tube and the sampling bottle, and then the sample is sucked into the sampling bottle, and when the sample in the sampling bottle is too much to overflow to the negative pressure tube, due to the structural arrangement of the anti-overflow cavity, the overflowed sample can enter the anti-overflow cavity, so that the sample directly entering the negative pressure assembly to cause the damage of the negative pressure assembly is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is the structural schematic view of the utility model.

[0016] Fig. 2 is the internal schematic view of the negative pressure head in the utility model.

[0017] Reference signs: 1, negative pressure assembly; 2, negative pressure head; 3, adapter; 4, sampling bottle; 5, suction head; 6, negative pressure tube; 7, sampling tube; 8, anti-overflow cavity; 9, connecting frame; 10, connecting port; 11, positioning groove; 12, protective pad; 13, sampling piece; 14, suction port; 15, air inlet pipe; 16, sealing element. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art belong to the protection scope of the utility model.

[0019] Those skilled in the art shall understand that in the disclosure of the utility model, the orientation or position relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation on the utility model.

[0020] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0021] As Figs. 1-2 The utility model provides a kind of suction sampling device, including negative pressure component 1, the negative pressure head 2 connected to the one side of negative pressure component 1, the adapter 3 connected to the one end of negative pressure head 2, the sampling bottle 4 and suction head 5 are detachably connected on the two sides of the adapter 3 respectively, negative pressure pipe 6 is arranged in the side of the adapter 3, and the negative pressure pipe 6 is used to connect negative pressure head 2 and sampling bottle 4, sampling tube 7 is arranged on the other side of adapter 3, and the sampling tube 7 is used to connect suction head 5 and sampling bottle 4, and the inside of the negative pressure head 2 is provided with anti-overflow cavity 8.

[0022] after sampling bottle and suction head are respectively installed to the corresponding position of the two sides of connecting head, connecting head is connected to negative pressure head, sampling tube is communicated with suction head and sampling bottle at this time, negative pressure pipe is communicated with negative pressure head and sampling bottle, so that when negative pressure component starts to suck, suction force can be generated at suction head by negative pressure pipe and sampling bottle, and then sample is sucked into sampling bottle, and when sample in sampling bottle is too much to overflow to negative pressure pipe, because of the structural arrangement of anti-overflow cavity, overflowed sample can enter anti-overflow cavity, to avoid the case that sample directly enters negative pressure component and causes damage to negative pressure component.

[0023] Among them, negative pressure component can adopt air pump, sealing ring is arranged at the connection place of negative pressure head and negative pressure component, sealing ring is arranged between adapter and sampling bottle, and suction head is made of rubber material.

[0024] Preferably, the side of negative pressure head 2 is provided with connecting frame 9, a plurality of connecting ports 10 are formed in connecting frame 9, and the bottle opening of sampling bottle 4 is matched with connecting port 10.

[0025] Specifically, after sampling is completed at the adapter, the sampling bottle can be directly connected and replaced at the connector. Several sampling bottles can be temporarily stored through the connecting frame, avoiding the need for sampling personnel to walk back and forth between the sampling and storage locations, which can increase the quantity and type of samples taken at one time.

[0026] Preferably, the connecting frame 9 has a positioning groove 11 on the side near the negative pressure head 2, and the protective pad 12 is engaged in the positioning groove 11 so that when the sampling bottle 4 is connected to the connecting port 10, the bottle mouth of the sampling bottle 4 abuts against the protective pad 12.

[0027] Specifically, when connecting the sampling bottle to the connector, first insert the protective pad into the positioning groove so that the mouth of the sampling bottle is against the protective pad. The protective pad then seals the mouth of the sampling bottle to prevent the sample from spilling out. After sampling is completed, the protective pad can be directly pulled out of the positioning groove and replaced for subsequent sampling bottles to prevent confusion between different sampling bottles.

[0028] The protective pad can be made of materials such as sponge or rubber, but when sampling liquids or other samples that will be absorbed by the sponge, the material of the protective pad needs to be changed.

[0029] Preferably, a material-retrieving piece 13 is provided on the side of the protective pad 12 near the opening of the positioning groove 11, so that when the operator needs to replace the protective pad, the protective pad can be easily removed by pulling the material-retrieving piece.

[0030] Preferably, the suction port 14 of the negative pressure component 1 extends into the inner side of the negative pressure head 2, and the suction port 14 is eccentrically positioned relative to the negative pressure head 2. An air inlet pipe 15 is provided inside the negative pressure head 2, and the air inlet pipe 15 is located at the center of the inner side of the negative pressure head 2 and connects to the adapter 3.

[0031] Specifically, by setting the air inlet pipe at the center of the negative pressure head and setting the suction port off-center relative to the negative pressure head, if a sample overflows from the sampling bottle in the air inlet pipe, the sample will not directly enter the suction port, but will be stored in the anti-overflow chamber, thereby improving the stability of the sampling process.

[0032] Preferably, a sealing element 16 is connected between the negative pressure head 2 and the adapter 3, the air inlet pipe 15 is connected to the sealing element 16, and the negative pressure pipe 6 is snapped into the sealing element 16.

[0033] Specifically, the suction stability between the negative pressure head and the adapter is improved by using a sealing element, and the negative pressure tube is clamped into the sealing element to ensure a sufficiently tight connection between the sample taking, the adapter, and the sealing element, thereby improving the suction efficiency.

[0034] The connecting part of the sealing member and the negative pressure head is provided with a sealing ring, and the outer periphery of the side end of the negative pressure pipe close to the sealing member is provided with a rubber structure, the rubber structure of the negative pressure pipe is in interference fit with the sealing member, thereby improving the connection stability of the negative pressure pipe.

[0035] Preferably, the end of the sampling tube 7 extends to the inside of the sampling bottle 4 at the lower side, and one end of the negative pressure pipe 6 is located at the top of the inside of the sampling bottle 4.

[0036] Specifically, when the sample enters the sampling bottle with the sampling tube, the sample is kept at the bottom of the sampling bottle through the end of the sampling tube, and the suction position of the negative pressure pipe is at the top of the sampling bottle, thereby effectively avoiding the case that the sample in the sampling tube is directly sucked by the negative pressure pipe, and improving the storage stability of the sample.

[0037] Preferably, the sampling bottle 4 and the adapter 3, and the sampling bottle 4 and the connecting port 10 are in threaded fit, so that the sampling bottle can be conveniently installed or removed on the adapter or the connecting port, improving the efficiency and replacement convenience in the actual sampling process.

[0038] Preferably, the suction head 5 and the adapter 3 are in interference fit, so that the suction head and the adapter are relatively sealed, improving the sampling stability.

[0039] In an embodiment of the present scheme, the suction head is made of rubber material.

[0040] Preferably, the inside bottom of the sampling bottle 4 is conical.

[0041] Specifically, since the sample needs to enter the sampling bottle through the sampling tube, and the sampling tube is difficult to uniformly disperse the sample to each position of the sampling bottle, the sample in the sampling bottle will be accumulated higher at the lower side of the sampling tube, and the present scheme sets the inside bottom of the sampling bottle to be conical, so that the sample will first gather to the middle position of the sampling bottle, and then uniformly disperse outward from the middle position, thereby improving the sampling and storage stability of the whole sampling bottle.

[0042] The present application is not limited to the above-mentioned best embodiment, and anyone can derive other various forms of products under the inspiration of the present application, but regardless of any changes in shape or structure, any technical solution with the same or similar to the present application falls within the protection scope of the present application.

Claims

1. An inhalation sampling device characterized by: The utility model provides a negative pressure sampling device, including negative pressure component (1), connect in one side of negative pressure component (1) negative pressure head (2), connect in one end of negative pressure head (2) adapter (3), the both sides of the adapter (3) are detachably connected with sampling bottle (4) and suction head (5) respectively, one side of the adapter (3) is provided with negative pressure pipe (6), the negative pressure pipe (6) is used for connecting negative pressure head (2) and sampling bottle (4), and the other side of the adapter (3) is provided with sampling pipe (7), the sampling pipe (7) is used for connecting suction head (5) and sampling bottle (4), and the inside of the negative pressure head (2) is provided with anti -overflow chamber (8).

2. The suction sampling device of claim 1, wherein: The negative pressure head (2) is provided with a connecting frame (9) on the side, and a plurality of connecting ports (10) are formed in the connecting frame (9).

3. The suction sampling device of claim 2, wherein: The connecting frame (9) is provided with a positioning groove (11) on the side close to the negative pressure head (2), and a protective pad (12) is clamped in the positioning groove (11), so that when the sampling bottle (4) is connected to the connecting port (10), the bottle opening of the sampling bottle (4) abuts against the protective pad (12).

4. The suction sampling device of claim 3, wherein: The protective pad (12) is provided with a material taking piece (13) on the side close to the opening of the positioning groove (11).

5. The inhalation sampling device of claim 1, wherein: The suction port (14) of the negative pressure component (1) is extended and arranged inside the negative pressure head (2), and the suction port (14) is eccentrically arranged relative to the negative pressure head (2), the negative pressure head (2) is provided with an air inlet pipe (15) inside, and the air inlet pipe (15) is located at the center position inside the negative pressure head (2) and is communicated to the adapter (3).

6. The inhalation sampling device of claim 5, wherein: The negative pressure head (2) and the adapter (3) are connected with a sealing element (16), the air inlet pipe (15) is communicated to the sealing element (16), and the negative pressure pipe (6) is clamped in the sealing element (16).

7. The inhalation sampling device of claim 1, wherein: The end of the sampling pipe (7) is extended and arranged inside the lower side of the sampling bottle (4), and one end of the negative pressure pipe (6) is located at the top inside the sampling bottle (4).

8. The inhalation sampling device of claim 2, wherein: The sampling bottle (4) and the adapter (3) are in threaded cooperation, and the sampling bottle (4) and the connecting port (10) are in threaded cooperation.

9. The inhalation sampling device of claim 1, wherein: The suction head (5) and the adapter (3) are in interference fit.

10. The inhalation sampling device of claim 1, wherein: The inside bottom of the sampling bottle (4) is conical.

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