CN204731072U - A glass sampling tube sampling auxiliary device - Google Patents

Abstract

The utility model discloses a sampling auxiliary device for a glass sampling tube, which comprises a rubber tube, a sleeve cap and a sleeve. The front section of the casing cap is matched with the inner wall of the rubber tube, the middle section of the casing cap is matched with the head of the sampling tube, and the rear section of the casing cap is matched with the outer wall of the casing. The utility model solves the problem that the same rubber tube is not easy to connect with the air sampling pump and the glass sampling tube through the connection of the sleeve cap. It will not fall when it is used, and it will not scratch the person being sampled.

Description

A glass sampling tube sampling auxiliary device

technical field

The utility model relates to the field of using glass sampling tubes, in particular to a device used for sampling auxiliary glass sampling tubes.

Background technique

In the prior art, active carbon sampling tubes or silica gel sampling tubes are often used when collecting toxic substances in the air. These sampling tubes are glass tubes. Samples are taken from the respiratory zone of the sampled person. Its operation has the following defects:

1. The outer diameter of the air inlet of the air sampling pump is generally larger than that of the glass sampling tube. When the rubber tube is connected, the connection of the air inlet of the air sampling pump will be too tight, making it difficult to connect. The connection of the glass sampling tube is too loose, and the sampling tube will Easy to drop during the process.

2. When one end of the glass sampling tube is inserted into the rubber tube, it is easy to scratch the hand, and if it is too loose or too tight, it will affect the sampling. If it is too loose, the sampling tube is easy to fall during sampling; if it is too tight, it is difficult to insert the sampling tube, which is time-consuming and laborious.

3. When sampling, the broken glass tube at one end is exposed on the outside, which is easy to scratch the sampled personnel.

Utility model content

The purpose of this utility model is to solve the above-mentioned problems and deficiencies in the prior art, and provide a glass sampling tube sampling auxiliary device, which facilitates the connection between the sampling tube and the air sampling pump, and protects the sampling personnel.

In order to achieve the above object, the utility model adopts the following technical solutions:

A glass sampling tube sampling auxiliary device, comprising a rubber tube, a sleeve cap and a sleeve, the sleeve is set on the outer wall of the glass sampling tube, the head of the glass sampling tube is connected with the rubber tube through the sleeve cap, and the The front section of the casing cap is matched with the inner wall of the rubber tube, the middle section of the casing cap is matched with the head of the glass sampling tube, and the rear section of the casing cap is matched with the outer wall of the casing.

The head of the rubber tube is connected with an air sampling pump, and its length is 90 cm.

The casing is hollow cylindrical, with external threads on the outside of the front section for threaded connection with the inside of the casing cap; the tail of the rear section is a wire mesh with a mesh diameter smaller than the outer diameter of the glass sampling tube for use after installation. Compress the glass sampling tube.

The casing cap is hollow inside, including three parts: the front section, the middle section and the back section; the front section is hollow cylindrical, which fits with the inner wall of the rubber tube; the middle section is hollow conical, used to seal the sampling tube and the casing The contact part of the cap; the rear section is hollow cylindrical and fits with the outer wall of the casing.

The outer diameter of the front section of the casing cap is smaller than the inner diameter of the rubber tube, and a protrusion is provided on the outer wall thereof to facilitate sealing with the joint of the rubber tube.

The inner side of the middle section of the casing cap cooperates with the rubber pad installed on the head of the glass sampling tube.

The rear section of the casing cap is provided with an internal thread, which cooperates with the external thread arranged at the front section of the casing.

The beneficial effects of the utility model are: through the connection of the sleeve cap, the problem that the same rubber tube is not easy to be connected with the air sampling pump and the glass sampling tube is solved, and the operation is simple and convenient. Just put the glass sampling tube into the sleeve and tighten it. It will hurt your hands, it will not fall when sampling, and it will not scratch the person being sampled.

Description of drawings

Fig. 1 is a schematic cross-sectional view of the utility model device.

In the figure: 1-rubber tube; 2-casing cap; 3-casing; 4-glass sampling tube; the

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

As shown in Figure 1: the glass sampling tube sampling auxiliary device includes a rubber tube 1, a sleeve cap 2, a sleeve tube 3 and a glass sampling tube 4, the outer wall of the glass sampling tube 4 is fitted with a sleeve tube 3, and the glass sampling tube 4 The head is connected to the rubber tube 1 through the sleeve cap 2, and the front section of the sleeve cap 2 is matched with the inner wall of the rubber tube 1, the middle section of the sleeve cap 2 is matched with the head of the sampling tube 4, and the rear section of the sleeve cap 2 Cooperate with the outer wall of the casing 3. the

The rubber tube 1 is a rubber tube with a diameter that can be easily connected to an air sampling pump, and the length is about 90 cm.

The casing cap 2 is hollow, made of hard material (metal or hard plastic), and includes three parts: front section, middle section and rear section. The front section is hollow cylindrical, the outer diameter is slightly smaller than the inner diameter of the rubber tube, and there are protrusions on the outside to facilitate sealing with the rubber tube connection. The interruption is a hollow conical shape, and the inner side is a wall-attached rubber pad, which is used to seal the contact part between the sampling tube and the casing cap. The rear section is a hollow cylinder with a large diameter, with threads on the inside and a length of about 3 cm, which is convenient for fixing glass sampling tubes of different lengths.

The casing 3 is hollow cylindrical, with threads on the outside of the front section for threaded connection with the inside of the casing cap, and a wire mesh at the tail of the rear section with a mesh diameter smaller than the outer diameter of the glass sampling tube for compression after installation Glass sampling tube.

The method of using the glass sampling tube sampling auxiliary device is as follows:

Insert the front part of the casing cap 2 into the rubber tube 1, the front part of the casing cap protrudes 5 to seal the joint, put the glass sampling tube 4 into the casing 3, put the front part of the casing 3 into the rear part of the casing cap 2, and tighten it , the casing 3 presses the gas outlet end of the glass sampling tube 4 into the casing cap 2 through the wire mesh 7, and the rubber pad 6 in the middle section of the casing cap 2 can seal the contact between the glass sampling tube 4 and the casing cap 2, as shown in the figure 1, the connection is complete, and the other end of the rubber tube 1 is connected to the air sampling pump for sampling.

Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, those skilled in the art do not need to pay creative work Various modifications or variations that can be made are still within the protection scope of the present invention.

Claims (8)

1. A glass sampling tube sampling auxiliary device is characterized in that: comprise rubber tube, sleeve cap and sleeve pipe, described sleeve pipe is sleeved on the outer wall of glass sampling tube, the head of glass sampling tube passes through sleeve cap and sleeve pipe The rubber tube is connected, and the front section of the sleeve cap is matched with the inner wall of the rubber tube, the middle section of the sleeve cap is matched with the head of the glass sampling tube, and the rear section of the sleeve cap is matched with the outer wall of the sleeve. 2. The glass sampling tube sampling auxiliary device according to claim 1, characterized in that: the head of the rubber tube is connected to the air sampling pump, and its length is 90 cm. 3. The glass sampling tube sampling auxiliary device according to claim 1, characterized in that: the sleeve is a hollow cylinder, and the outer side of the front section has an external thread that cooperates with the sleeve cap; the tail of the rear section is used for pressing Tight glass sampling tube with wire mesh. 4. The glass sampling tube sampling auxiliary device according to claim 3, characterized in that: the mesh diameter of the metal wire is smaller than the outer diameter of the glass sampling tube. 5. The glass sampling tube sampling auxiliary device as claimed in claim 1, characterized in that: the front section of the sleeve cap is hollow cylindrical and fits with the inner wall of the rubber tube; the middle section is hollow conical for Seal the contact part between the sampling tube and the sleeve cap; the rear section is a hollow cylinder and fits with the outer wall of the sleeve. 6. The glass sampling tube sampling auxiliary device according to claim 5, characterized in that: the outer diameter of the front section of the casing cap is smaller than the inner diameter of the rubber tube, and a protrusion is provided on its outer wall to facilitate the connection with the rubber tube seal. 7. The glass sampling tube sampling auxiliary device according to claim 5, characterized in that: the inner side of the middle section of the casing cap cooperates with the rubber pad installed on the head of the glass sampling tube. 8. The glass sampling tube sampling auxiliary device according to claim 5, characterized in that: the rear section of the sleeve cap is provided with an internal thread, which cooperates with the external thread provided at the front section of the sleeve.