Gas sampling equipment for chemical safety

Abstract

The utility model relates to the technical field of chemical industry, in particular to chemical safety gas sampling equipment which comprises an equipment body, a first gas conveying groove is formed in the equipment body, a ball groove is formed in the first gas conveying groove, a turning assembly is arranged in the ball groove, and a plurality of sealing layers are arranged on the inner wall of the ball groove. A multi-stage telescopic air pipe and an air storage tank are arranged on the two sides of the first air conveying groove respectively, a piston is arranged in the air storage tank, a push-pull rod is arranged on one side of the piston, a second air conveying groove and a third air conveying groove are formed between the ball groove and the air storage tank, and a first one-way valve and an electric valve are arranged in the second air conveying groove and the third air conveying groove respectively. A sampling tank is arranged on one side of the second gas conveying groove in a threaded manner, so that the influence of residual sample air in a sampling pipeline on subsequent sampling is prevented, and the serious influence on a sampling analysis result is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of chemical technology, specifically, a kind of gas sampling equipment for chemical safety. BACKGROUND

[0002] Gas sampling equipment is used for collecting gas samples in atmospheric environment or chemical operation environment instrument or device, widely used in environmental monitoring, occupational disease prevention, industrial harmful gas collection and other fields, its main type includes gas sampler and particulate matter sampler, according to the use place can be divided into environmental sampler, indoor sampler and pollution source sampler, especially widely used in chemical field.

[0003] Such as Chinese patent publication: a kind of gas sampling equipment for chemical safety detection, application number: CN202323110345.6, including bottom plate and cabinet, the four corners of bottom plate top are all fixedly connected with support column, the top of support column is respectively fixedly connected with the four corners of cabinet bottom, the inside of cabinet is provided with gas cavity, piston is slidably connected in the inside of gas cavity, one end of piston is fixedly connected with connecting rod extending out one end of cabinet, the utility model discloses a kind of gas sampling equipment for chemical safety detection, according to actual situation telescopic adjustment length of telescopic suction nozzle, the suction head of telescopic suction nozzle is close to and aligned with gas sampling position, improve sampling effect, and increase the distance between sampling position and sampling personnel, reduce the harm of sampling position chemical gas leakage to sampling personnel, improve safety;Repeatedly pull piston to move and complete gas sampling, after sampling is completed, close valve, close sampling tank, remove sampling tank for subsequent chemical safety detection, easy to operate, convenient to use.

[0004] But the accuracy and reliability of the above technical scheme in the field of chemical safety, gas sampling equipment is crucial to ensure the safety of working environment, when gas sampling, in order to ensure that sampling analysis result is accurate, often need to sample several times, and traditional gas sampling equipment often faces the problem of residual sample air in sampling pipeline during sampling process, which not only may lead to cross contamination, but also may have serious influence on subsequent sampling analysis result. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a kind of gas sampling equipment for chemical safety, which can effectively solve the problem in the background art that the accuracy and reliability of the gas sampling equipment in the field of chemical safety are crucial to ensure the safety of working environment, when gas sampling, in order to ensure that sampling analysis result is accurate, often need to sample several times, and traditional gas sampling equipment often faces the problem of residual sample air in sampling pipeline during sampling process, which not only may lead to cross contamination, but also may have serious influence on subsequent sampling analysis result.

[0006] In order to achieve the above object, the utility model adopts the technical scheme, which is a kind of gas sampling equipment for chemical safety, including equipment body, first gas conveying groove is arranged on the equipment body, ball groove is arranged in the first gas conveying groove, direction-changing assembly is arranged in the ball groove, a plurality of sealing layers are arranged on the inner wall of the ball groove, multistage telescopic air pipe and gas storage groove are respectively arranged on the both sides of the first gas conveying groove, piston is arranged in the gas storage groove, push-pull rod is arranged on the side of the piston, second gas conveying groove and third gas conveying groove are arranged between the ball groove and the gas storage groove, first check valve and electric valve are respectively arranged in the second gas conveying groove and the third gas conveying groove, sampling tank is threadedly arranged on the side of the second gas conveying groove.

[0007] As preferred, the first gas conveying groove is communicated with the multistage telescopic air pipe and the gas storage groove respectively on both sides.

[0008] As preferred, the push-pull rod is slidably connected with the equipment body, and the second gas conveying groove and the third gas conveying groove are communicated with the first gas conveying groove.

[0009] As preferred, the direction-changing assembly is rotatably provided with rotating ball in the ball groove, the fourth gas conveying groove is arranged on the rotating ball, and the second check valve is arranged on the fourth gas conveying groove.

[0010] As preferred, the rotating column is provided with knob on the rotating column, and the pointing mark is arranged on the knob.

[0011] As preferred, the rotating column is rotatably connected with the equipment body.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] (1) the utility model when sampling is successful, sampling tank is taken away, rotating knob is rotated subsequently, rotating knob drives rotating ball to rotate through rotating column, rotating ball drives second check valve to rotate, the air outlet direction of second check valve is rotated one hundred and eighty degrees, so that external air cannot enter gas storage groove through multistage telescopic air pipe, electric valve is opened, clean gas is input into third gas conveying groove, then piston is moved, clean gas is sucked into gas storage groove, after clean gas is sucked in, electric valve is closed, rotating knob is rotated again, the air outlet direction of second check valve returns to original position, then piston is moved to the direction close to multistage telescopic air pipe, so that clean gas in gas storage groove flows into first gas conveying groove, and clean gas is input into multistage telescopic air pipe and second gas conveying groove through first gas conveying groove, thereby the gas storage groove, first gas conveying groove, multistage telescopic air pipe and second gas conveying groove are cleaned, residual sample air in sampling pipeline is prevented from affecting subsequent sampling, thereby serious influence on sampling analysis result is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1The utility model discloses a kind of gas sampling equipment for chemical safety, which comprises a device body, a first gas conveying groove is arranged on the device body, a ball groove is arranged in the first gas conveying groove, a direction-changing assembly is arranged in the ball groove, a plurality of sealing layers are arranged on the inner wall of the ball groove, a plurality of multi-stage telescopic air pipes and a gas storage groove are arranged on both sides of the first gas conveying groove, a piston is arranged in the gas storage groove, a push-pull rod is arranged on one side of the piston, a second gas conveying groove and a third gas conveying groove are arranged between the ball groove and the gas storage groove, a first one-way valve and an electric valve are arranged in the second gas conveying groove and the third gas conveying groove respectively, and a sampling tank is threadedly arranged on one side of the second gas conveying groove.

[0015] Figure 2 The utility model discloses a kind of gas sampling equipment for chemical safety, which comprises a device body, a first gas conveying groove is arranged on the device body, a ball groove is arranged in the first gas conveying groove, a direction-changing assembly is arranged in the ball groove, a plurality of sealing layers are arranged on the inner wall of the ball groove, a plurality of multi-stage telescopic air pipes and a gas storage groove are arranged on both sides of the first gas conveying groove, a piston is arranged in the gas storage groove, a push-pull rod is arranged on one side of the piston, a second gas conveying groove and a third gas conveying groove are arranged between the ball groove and the gas storage groove, a first one-way valve and an electric valve are arranged in the second gas conveying groove and the third gas conveying groove respectively, and a sampling tank is threadedly arranged on one side of the second gas conveying groove.

[0016] Figure 3 The utility model discloses a kind of gas sampling equipment for chemical safety, which comprises a device body, a first gas conveying groove is arranged on the device body, a ball groove is arranged in the first gas conveying groove, a direction-changing assembly is arranged in the ball groove, a plurality of sealing layers are arranged on the inner wall of the ball groove, a plurality of multi-stage telescopic air pipes and a gas storage groove are arranged on both sides of the first gas conveying groove, a piston is arranged in the gas storage groove, a push-pull rod is arranged on one side of the piston, a second gas conveying groove and a third gas conveying groove are arranged between the ball groove and the gas storage groove, a first one-way valve and an electric valve are arranged in the second gas conveying groove and the third gas conveying groove respectively, and a sampling tank is threadedly arranged on one side of the second gas conveying groove. Figure 2

[0017] Figure 4 The utility model discloses a kind of gas sampling equipment for chemical safety, which comprises a device body, a first gas conveying groove is arranged on the device body, a ball groove is arranged in the first gas conveying groove, a direction-changing assembly is arranged in the ball groove, a plurality of sealing layers are arranged on the inner wall of the ball groove, a plurality of multi-stage telescopic air pipes and a gas storage groove are arranged on both sides of the first gas conveying groove, a piston is arranged in the gas storage groove, a push-pull rod is arranged on one side of the piston, a second gas conveying groove and a third gas conveying groove are arranged between the ball groove and the gas storage groove, a first one-way valve and an electric valve are arranged in the second gas conveying groove and the third gas conveying groove respectively, and a sampling tank is threadedly arranged on one side of the second gas conveying groove.

[0018] Figure 5 The utility model discloses a kind of gas sampling equipment for chemical safety, which comprises a device body, a first gas conveying groove is arranged on the device body, a ball groove is arranged in the first gas conveying groove, a direction-changing assembly is arranged in the ball groove, a plurality of sealing layers are arranged on the inner wall of the ball groove, a plurality of multi-stage telescopic air pipes and a gas storage groove are arranged on both sides of the first gas conveying groove, a piston is arranged in the gas storage groove, a push-pull rod is arranged on one side of the piston, a second gas conveying groove and a third gas conveying groove are arranged between the ball groove and the gas storage groove, a first one-way valve and an electric valve are arranged in the second gas conveying groove and the third gas conveying groove respectively, and a sampling tank is threadedly arranged on one side of the second gas conveying groove.

[0019] In the figure: 1, device body; 2, first gas conveying groove; 3, ball groove; 4, direction-changing assembly; 401, rotating ball; 402, fourth gas conveying groove; 403, second one-way valve; 404, rotating column; 405, knob; 406, pointing mark; 5, sealing layer; 6, multi-stage telescopic air pipe; 7, gas storage groove; 8, piston; 9, push-pull rod; 10, second gas conveying groove; 11, third gas conveying groove; 12, first one-way valve; 13, electric valve; 14, sampling tank. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with 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 without creative labor fall within the scope of protection of the utility model.

[0021] As shown in Figures 1 to 3 , a kind of gas sampling equipment for chemical safety, including device body 1, first gas conveying groove 2 is arranged on the device body 1, ball groove 3 is arranged in the first gas conveying groove 2, direction-changing assembly 4 is arranged in the ball groove 3, several sealing layers 5 are arranged on the inner wall of the ball groove 3, multi-stage telescopic air pipe 6 and gas storage groove 7 are respectively arranged on the two sides of the first gas conveying groove 2, piston 8 is arranged in the gas storage groove 7, push-pull rod 9 is arranged on one side of the piston 8, second gas conveying groove 10 and third gas conveying groove 11 are arranged between the ball groove 3 and the gas storage groove 7, first one-way valve 12 and electric valve 13 are respectively arranged in the second gas conveying groove 10 and the third gas conveying groove 11, sampling tank 14 is threadedly arranged on one side of the second gas conveying groove 10.

[0022] As shown in Figure 4 and​Figure 5 As shown in another embodiment of the utility model, the turning assembly 4 is provided with a rotating ball 401 in the ball groove 3, the rotating ball 401 is provided with a fourth gas conveying groove 402, the fourth gas conveying groove 402 is provided with a second one-way valve 403;

[0023] One side of the rotating ball 401 is provided with a rotating column 404, the rotating column 404 is provided with a knob 405, the knob 405 is provided with a pointing mark 406;

[0024] When the gas outlet direction of the second one-way valve 403 needs to be adjusted, first rotate the knob 405, the knob 405 drives the rotating column 404 to rotate, the rotating column 404 drives the rotating ball 401 to rotate, the rotating ball 401 drives the second one-way valve 403 to rotate, thereby adjusting the gas outlet direction of the second one-way valve 403, and the pointing mark 406 facilitates the observation of the gas outlet direction of the second one-way valve 403 by the staff.

[0025] The working principle of the gas sampling equipment for chemical safety is as follows:

[0026] In use, the multi-stage telescopic air pipe 6 is extended to the sampling position, and then the piston 8 is moved away from the multi-stage telescopic air pipe 6 by the push-pull rod 9, so that the sample air at the sampling position is sucked into the first air conveying groove 2 through the multi-stage telescopic air pipe 6, at this time, the second one-way valve 403 is opened, the first one-way valve 12 is closed, and the sample air in the first air conveying groove 2 enters the gas storage groove 7 through the second one-way valve 403, when enough sample air is sucked in the gas storage groove 7, the piston 8 is moved towards the multi-stage telescopic air pipe 6, at this time, the second one-way valve 403 is closed, and then the first one-way valve 12 is opened, so that the sample air in the gas storage groove 7 enters the sampling tank 14 through the second air conveying groove 10, and the sampling is completed, when the sampling is successful, the sampling tank 14 is taken away, then the rotating knob 405 is rotated, the rotating knob 405 drives the rotating ball 401 to rotate through the rotating column 404, the rotating ball 401 drives the second one-way valve 403 to rotate, the gas outlet direction of the second one-way valve 403 is rotated by one hundred and eighty degrees, so that the external air cannot enter the gas storage groove 7 through the multi-stage telescopic air pipe 6, the electric valve 13 is opened, at this time, the external air can only enter the gas storage groove 7 through the third air conveying groove 11, then the piston 8 is moved, so that the cleaning gas is sucked into the gas storage groove 7, after the cleaning gas is sucked in, the electric valve 13 is closed, the rotating knob 405 is rotated again, so that the gas outlet direction of the second one-way valve 403 returns to the original position, then the piston 8 is moved towards the multi-stage telescopic air pipe 6, so that the cleaning gas in the gas storage groove 7 flows into the first air conveying groove 2, and then the cleaning gas is input into the multi-stage telescopic air pipe 6 and the second air conveying groove 10 through the first air conveying groove 2, so as to clean the gas storage groove 7, the first air conveying groove 2, the multi-stage telescopic air pipe 6 and the second air conveying groove 10, so as to prevent the residual sample air in the sampling pipeline from affecting the subsequent sampling, thereby preventing the sampling analysis result from being seriously affected.

[0027] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application, and for those skilled in the art, other different forms of changes or variations can be made on the basis of the above description, and all the embodiments cannot be exhausted here, and any obvious changes or variations derived from the technical solutions of the present application still fall within the protection scope of the present application.

Claims

1. A gas sampling device for chemical safety, comprising a device body (1), characterized in that: The equipment body (1) is provided with a first gas conveying groove (2), the first gas conveying groove (2) is provided with a ball groove (3), the ball groove (3) is provided with a direction changing assembly (4), the inner wall of the ball groove (3) is provided with a plurality of sealing layers (5), the two sides of the first gas conveying groove (2) are respectively provided with a multi-stage telescopic air pipe (6) and a gas storage groove (7), the gas storage groove (7) is provided with a piston (8), one side of the piston (8) is provided with a push-pull rod (9), the ball groove (3) and the gas storage groove (7) are provided with a second gas conveying groove (10) and a third gas conveying groove (11), the second gas conveying groove (10) and the third gas conveying groove (11) are respectively provided with a first one-way valve (12) and an electric valve (13), and the second gas conveying groove (10) is provided with a sampling tank (14) on one side in a threaded manner.

2. The gas sampling equipment for chemical safety according to claim 1, characterized in that: The two sides of the first gas conveying groove (2) are respectively communicated with the multi-stage telescopic air pipe (6) and the gas storage groove (7).

3. The gas sampling device for chemical safety according to claim 2, characterized by: The push-pull rod (9) is slidably connected with the equipment body (1), and the second gas conveying groove (10) and the third gas conveying groove (11) are both communicated with the first gas conveying groove (2).

4. The gas sampling equipment for chemical industry safety according to claim 3, characterized in that: The direction changing assembly (4) is provided with a rotating ball (401) in the ball groove (3), the rotating ball (401) is provided with a fourth gas conveying groove (402), and the fourth gas conveying groove (402) is provided with a second one-way valve (403).

5. The gas sampling device for chemical safety according to claim 4, characterized by: One side of the rotating ball (401) is provided with a rotating column (404), the rotating column (404) is provided with a knob (405), and the knob (405) is provided with a pointing mark (406).

6. The gas sampling device for chemical safety according to claim 5, characterized by: The rotating column (404) is rotatably connected with the equipment body (1).

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