Sampling device for waste gas detection

Abstract

The utility model discloses a sampling device for waste gas detection, which comprises a sampling barrel and a mounting sleeve, the sampling barrel is fixedly mounted at the lower end of the mounting sleeve, a pull rod is movably mounted in the mounting sleeve, and a waste gas drawing rod is fixedly mounted at the lower end of the pull rod. According to the sampling device for waste gas detection, during sampling, the pull rod is pulled to drive the waste gas drawing rod to move, external waste gas is drawn into the sampling barrel under the drawing of the piston until the rubber plug block of the waste gas drawing rod is embedded in the plug hole of the sampling barrel, and the waste gas is sealed in the sampling barrel; when waste gas needs to be sampled again, the pull rod is rotated, so that the threaded column of the waste gas drawing rod is withdrawn from the threaded groove of the pull rod, the pull rod and the waste gas drawing rod are disconnected, and finally, the sampling barrel is rotated, so that the mounting sleeve and the sampling barrel are separated; therefore, another sampling barrel and the mounting sleeve can be mounted together to sample waste gas.

Description

TECHNICAL FIELD

[0001] The utility model relates to exhaust gas sampling device field, especially a sampling device for exhaust gas detection. BACKGROUND

[0002] With the modern society people's attention to environmental protection, the exhaust gas produced in people's daily life and industrial production will be sampled to facilitate subsequent detection.

[0003] However, the present sampling device has some deficiencies, for example, application No. 202223296437.3 discloses "a kind of exhaust gas sampling device for exhaust gas detection", when using sampling device, one sampling device can only be used once, when a certain amount of exhaust gas needs to be collected, multiple sampling devices need to be prepared, which is troublesome. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a kind of sampling device for exhaust gas detection, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] A kind of sampling device for exhaust gas detection, including sampling cylinder and installation sleeve, the lower end of the installation sleeve is fixedly installed with sampling cylinder, the inside of the installation sleeve is movably installed with pull rod, the lower end of the pull rod is fixedly installed with exhaust gas extraction rod.

[0007] Preferably, the surface of the sampling cylinder and close to the upper end are fixedly provided with a ring, the upper surface of the sampling cylinder is provided with a through hole, the lower end of the sampling cylinder is fixedly embedded with a closure block, the lower surface of the closure block is provided with a plug hole, and the surface of the sampling cylinder and above the ring are provided with threads.

[0008] Preferably, the upper end of the pull rod is fixedly installed with a pull block, the lower end of the pull rod is provided with a threaded groove, and the surface of the pull rod and close to the lower end are fixedly provided with a limit ring.

[0009] Preferably, the upper end of the exhaust gas extraction rod is fixedly installed with a piston, the upper surface of the piston is fixedly installed with a reinforcing sheet, the upper surface of the reinforcing sheet is fixedly installed with a threaded column, the lower end of the exhaust gas extraction rod is fixedly installed with a rubber plug block, and the lower surface of the rubber plug block is fixedly installed with a stop block.

[0010] Preferably, the diameter of the rubber plug block is greater than the diameter of the plug hole, the diameter of the exhaust gas extraction rod is less than the diameter of the rubber plug block, and the diameter of the reinforcing sheet is less than the diameter of the piston.

[0011] Preferably, the inner surface of the mounting sleeve and the lower end is also provided with threads, and the inner diameter of the mounting sleeve is greater than the outer diameter of the sampling cylinder.

[0012] Preferably, the lower end of the pull rod extends into the interior of the sampling cylinder through the through hole, and the upper end of the threaded column is embedded in the threaded groove.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the utility model, through the cooperation of the sampling cylinder, the mounting sleeve, the pull rod and the waste gas extraction rod, when sampling waste gas, the pull rod is pulled by the pull block, and the waste gas extraction rod is moved when the pull rod moves, at this time, the external waste gas is extracted into the sampling cylinder under the extraction of the piston, until the rubber plug of the waste gas extraction rod is embedded in the plug hole of the sampling cylinder, at this time, the waste gas is sealed in the sampling cylinder, when needing to sample the waste gas again, the pull rod is rotated by rotating the pull block, until the threaded column of the waste gas extraction rod is withdrawn from the threaded groove of the pull rod, so that the pull rod and the waste gas extraction rod are disconnected, finally, the mounting sleeve and the sampling cylinder are separated by rotating the sampling cylinder, so that another sampling cylinder and the mounting sleeve are installed together and the waste gas is sampled. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure diagram of the sampling device for waste gas detection of the utility model;

[0016] Figure 2 It is a sampling cylinder partial section view of the sampling device for waste gas detection of the utility model;

[0017] Figure 3 It is a mounting sleeve and pull rod installation schematic diagram partial section view of the sampling device for waste gas detection of the utility model;

[0018] Figure 4 It is a waste gas extraction rod structure diagram of the sampling device for waste gas detection of the utility model.

[0019] In the drawing: 1, sampling cylinder; 101, supporting ring; 102, thread; 103, closing block; 104, plug hole; 105, through hole; 2, mounting sleeve; 3, pull rod; 301, pull block; 302, limiting ring; 303, threaded groove; 4, waste gas extraction rod; 401, piston; 402, reinforcing sheet; 403, threaded column; 404, rubber plug; 405, stop block. PREFERRED EMBODIMENT

[0020] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0021] AsFigures 1-4 The utility model provides a sampling device for exhaust gas detection, comprising a sampling cylinder 1 and a mounting sleeve 2, the lower end of the mounting sleeve 2 is fixedly installed with the sampling cylinder 1, the inside of the mounting sleeve 2 is movably installed with a pull rod 3, the lower end of the pull rod 3 is fixedly installed with an exhaust gas extraction rod 4.

[0022] The surface of the sampling cylinder 1 and close to the upper end are fixedly sleeved with a supporting ring 101, the upper surface of the sampling cylinder 1 is provided with a through hole 105, the lower end of the sampling cylinder 1 is fixedly embedded with a closing block 103, the lower surface of the closing block 103 is provided with a plug hole 104, the surface of the sampling cylinder 1 and above the supporting ring 101 are provided with a thread 102, after the rubber plug block 404 is embedded in the plug hole 104, the exhaust gas in the sampling cylinder 1 can be sealed; the upper end surface of the pull rod 3 is fixedly installed with a pull block 301, the lower end surface of the pull rod 3 is provided with a thread groove 303, the surface of the pull rod 3 and close to the lower end are fixedly sleeved with a limiting ring 302, the limiting ring 302 can prevent the pull rod 3 from being pulled out of the mounting sleeve 2; the upper end surface of the exhaust gas extraction rod 4 is fixedly installed with a piston 401, the upper surface of the piston 401 is fixedly installed with a reinforcing sheet 402, the upper surface of the reinforcing sheet 402 is fixedly installed with a threaded column 403, the lower end surface of the exhaust gas extraction rod 4 is fixedly installed with a rubber plug block 404, the lower surface of the rubber plug block 404 is fixedly installed with a stop block 405; the diameter of the rubber plug block 404 is greater than the diameter of the plug hole 104, the diameter of the exhaust gas extraction rod 4 is smaller than the diameter of the rubber plug block 404, and the diameter of the reinforcing sheet 402 is smaller than the diameter of the piston 401; the inner surface of the mounting sleeve 2 and at the lower end is also provided with a thread 102, and the inner diameter of the mounting sleeve 2 is greater than the outer diameter of the sampling cylinder 1; the lower end of the pull rod 3 extends to the inside of the sampling cylinder 1 through the through hole 105, and the upper end of the threaded column 403 is embedded in the thread groove 303.

[0023] It should be noted that the utility model provides a sampling device for exhaust gas detection, when sampling exhaust gas, the pull block 301 is used to pull the pull rod 3, the pull rod 3 drives the exhaust gas extraction rod 4 to move when moving, at this time, under the extraction of the piston 401, the external exhaust gas is extracted into the sampling cylinder 1, until the rubber plug block 404 of the exhaust gas extraction rod 4 is embedded in the plug hole 104 of the sampling cylinder 1, at this time, the exhaust gas is sealed in the sampling cylinder 1, when it is needed to sample the exhaust gas again, the pull block 301 is rotated, so that the pull rod 3 is rotated, until the threaded column 403 of the exhaust gas extraction rod 4 is withdrawn from the thread groove 303 of the pull rod 3, so that the pull rod 3 and the exhaust gas extraction rod 4 are disconnected, finally, the sampling cylinder 1 is rotated, so that the mounting sleeve 2 is separated from the sampling cylinder 1, so that another sampling cylinder 1 and the mounting sleeve 2 can be installed together and the exhaust gas is sampled.

[0024] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A sampling device for exhaust gas detection, characterized by: The utility model provides a kind of exhaust gas sampling device, including sampling cylinder (1) and mounting sleeve (2), the lower end of mounting sleeve (2) is fixedly installed with sampling cylinder (1), the inside of mounting sleeve (2) is movably installed with pull rod (3), the lower end of pull rod (3) is fixedly installed with exhaust gas extraction rod (4), the surface of sampling cylinder (1) and close to upper end fixedly equipped with ring (101), the upper surface of sampling cylinder (1) is equipped with through hole (105), the lower end of sampling cylinder (1) is fixedly embedded with closure block (103), the lower surface of closure block (103) is equipped with plug hole (104), the surface of sampling cylinder (1) and located above ring (101) is equipped with screw thread (102), the upper end surface of pull rod (3) is fixedly installed with pull block (301), the lower end surface of pull rod (3) is equipped with screw thread groove (303), the surface of pull rod (3) and close to lower end fixedly equipped with limit ring (302), the upper end surface of exhaust gas extraction rod (4) is fixedly installed with piston (401), the upper surface of piston (401) is fixedly installed with reinforcing sheet (402), the upper surface of reinforcing sheet (402) is fixedly installed with screw thread column (403), the lower end surface of exhaust gas extraction rod (4) is fixedly installed with rubber plug block (404), the lower surface of rubber plug block (404) is fixedly installed with stop block (405).

2. The sampling device for exhaust gas detection according to claim 1, characterized by: The diameter of the rubber plug block (404) is greater than the diameter of the plug hole (104), the diameter of the exhaust gas extraction rod (4) is less than the diameter of the rubber plug block (404), and the diameter of the reinforcing sheet (402) is less than the diameter of the piston (401).

3. A sampling device for exhaust gas analysis according to claim 2, characterized in that: The inner surface of the mounting sleeve (2) and the lower end also have a screw thread (102), and the inner diameter of the mounting sleeve (2) is greater than the outer diameter of the sampling cylinder (1).

4. The sampling device for exhaust gas detection according to claim 3, characterized by: The lower end of the pull rod (3) extends into the sampling cylinder (1) through the through hole (105), and the upper end of the screw thread column (403) is embedded in the screw thread groove (303).

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