Hazardous gas closed sampling device

Abstract

The utility model discloses a hazardous gas closed sample introduction device which comprises a sample introduction box, a mini air pump, an air inlet pipe, a flow dividing pipe, a fixing plate, a soft film plate and a collecting device, the collecting device is arranged, and the stabilizing effect on a first collecting mechanism and a second collecting mechanism is improved through a sample pipe clamp; hazardous gas is extracted and is matched with a flow dividing pipe to be fed into the first collecting mechanism and the second collecting mechanism for closed storage and taking, and the first collecting mechanism and the second collecting mechanism can be conveniently and conveniently taken through a movable groove and a movable cover plate; a first collecting mechanism is arranged, the inner side of the right end of a flow dividing pipe is connected with a collecting pipe in a penetrating mode, gas pushes a movable plug to drive a fixed sleeve rod to synchronously move rightwards along the interior of the collecting pipe, the fixed sleeve rod is elastically matched with a check block through a sleeve spring, and therefore the collecting effect of one-way gas extraction and storage is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas collection equipment, in particular to a closed sampling device for dangerous gases. Background Art

[0002] A sealed sampler is a device used to collect and store gas, liquid, or solid samples. It isolates the sample from the outside world through a certain method, and then performs sampling in a sealed state to ensure sampling accuracy and reliability, while also ensuring that the sample is not contaminated or damaged during the sampling process. Gas sampling cannot be properly sealed and stored during the sampling process, making it inconvenient to move the gas sample to an appropriate location for removal and testing.

[0003] For example, publication number CN202223365662.8 discloses "A gas sampling device with good sealing performance". Through the gas storage tube, the sample can be quickly sealed and stored, improving the efficiency of the device in using the sample, and samples in different positions can be quickly stored separately, improving the sampling efficiency of the user.

[0004] The above-mentioned storage of harmful gases is performed by storing them in a sampling device, but after the gas is collected, it needs to be transferred to the collection device to store and access the harmful gases, which can easily cause harmful gas threats and is not conducive to the storage and portable collection of harmful gases. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides a sealed sampling device for hazardous gases, which solves the above-mentioned problems.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a closed sampling device for hazardous gas, comprising a sampling box, a mini air pump, an air inlet pipe, a diversion pipe, a fixing plate, a soft film plate and a collecting device, wherein a mini air pump is installed at the left end of the sampling box, and the left and right sides of the mini air pump are respectively connected to the air inlet pipe and the diversion pipe, the right end of the diversion pipe is fixed to the inner side of the fixing plate, and a soft film plate is provided on the inner side of the right end of the diversion pipe, and the collecting device is installed on the inner side of the sampling box, the collecting device comprises a movable groove, a movable cover, a sample tube clamp, a collecting mechanism 1 and a collecting mechanism 2, a movable cover is installed on the inner side of the movable groove, the collecting mechanism 1 and the collecting mechanism 2 are respectively fixed to the inner side of the upper end of the sample tube clamp, the movable groove is opened on the inner side of the upper end of the sampling box, the sample tube clamp is fixed to the right side of the inner side of the sampling box, and the left ends of the collecting mechanism 1 and the collecting mechanism 2 are respectively connected to the inner side of the right end of the diversion pipe.

[0009] Preferably, the collecting mechanism includes a connecting tube, a collecting tube, a movable plug, a fixed sleeve rod, a sleeve spring and a stopper. The left end of the connecting tube is connected to the collecting tube, and a stopper is fixed to the inner lower side of the collecting tube. A fixed sleeve rod is installed on the inner side of the right end of the movable plug, and a sleeve spring is sleeved on the outer side of the right end of the fixed sleeve rod, and the fixed sleeve rod is elastically matched with the stopper through the sleeve spring. The connecting tube is fixed to the inner side of the upper end of the sample tube clamp, and the left end of the collecting tube is connected to the inner side of the right end of the shunt tube.

[0010] Preferably, the movable groove and the movable cover are both rectangular and arranged on the inner side of the upper end of the sample injection box, so as to facilitate the portable taking of the collecting mechanism 1 and the collecting mechanism 2.

[0011] Preferably, the sample tube clamps are provided in two groups and are distributed in pairs at the front and back sides of the interior of the sample feeding box, thereby providing auxiliary reinforcement for the collecting mechanism 1 or the collecting mechanism 2 respectively.

[0012] Preferably, the collecting mechanism 1 and the collecting mechanism 2 are respectively connected to the connecting pipes on the front and rear sides of the right end of the diversion pipe through the collecting pipe, so as to achieve the effect of diverting and collecting the gas.

[0013] Preferably, the movable plug is rectangular, and a rectangular notch consistent with the left end of the movable plug is opened on the left side of the interior of the connecting pipe, so that the movable plug can cooperate with the left side notch inside the connecting pipe to perform one-way blocking, thereby preventing gas leakage.

[0014] Preferably, the blocks are fixed oppositely to the upper and lower sides of the inner middle part of the connecting pipe, and the sum of the lengths of the two groups of blocks is greater than the lateral length of the sleeve spring, so as to cooperate with the sleeve spring to achieve an elastic reset effect.

[0015] (3) Beneficial effects

[0016] The utility model provides a sealed sampling device for hazardous gases. It has the following beneficial effects: by providing a collection device, the sample tube clamp improves the stability of the collection mechanism 1 and the collection mechanism 2, extracts the hazardous gas and cooperates with the diversion pipe to divert the gas into the collection mechanism 1 and the collection mechanism 2 for sealed storage and access, and the movable groove and movable cover facilitate the portable access of the collection mechanism 1 and the collection mechanism 2.

[0017] The utility model provides a sealed sampling device for hazardous gases. It has the following beneficial effects: by providing a collection mechanism, the right end of the shunt tube is connected to the collection tube through the inner side, and the gas pushes the movable plug to move synchronously with the fixed sleeve rod to the right along the inside of the collection tube. The fixed sleeve rod elastically cooperates with the stopper through the sleeve spring, thereby achieving a one-way gas extraction and storage collection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the top plan structure of the utility model;

[0020] Figure 3 This is a front planar structural diagram of the collecting device of the present invention;

[0021] Figure 4 This is a schematic diagram of the planar structure of the collecting device of the present invention;

[0022] Figure 5 This is a front planar structural diagram of the collecting mechanism of the present invention.

[0023] Figure: Sample injection box 1, mini air pump 2, air inlet pipe 3, diverter pipe 4, fixed plate 5, soft film plate 6, collection device 7, movable groove 71, movable cover 72, sample tube clamp 73, collection mechanism 1 74, collection mechanism 2 75, connecting pipe 741, collection pipe 742, movable plug 743, fixed sleeve rod 744, sleeve spring 745, stopper 746. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1 and 2 The utility model provides a technical solution for a sealed sampling device for hazardous gases: a sealed sampling device for hazardous gases, comprising a sampling box 1, a mini air pump 2, an air inlet pipe 3, a diversion pipe 4, a fixing plate 5, a soft film plate 6 and a collecting device 7. The mini air pump 2 is installed at the left end of the sampling box 1, and the left and right sides of the mini air pump 2 are respectively connected to the air inlet pipe 3 and the diversion pipe 4. The right end of the diversion pipe 4 is fixed to the inner side of the fixing plate 5, and a soft film plate 6 is provided on the inner side of the right end of the diversion pipe 4. The collecting device 7 is installed on the inner side of the sampling box 1.

[0026] See also Figure 3 and 4The present invention provides a technical solution for a sealed sampling device for hazardous gas: a sealed sampling device for hazardous gas, wherein the collecting device 7 comprises a movable groove 71, a movable cover plate 72, a sample tube clamp 73, a collecting mechanism 1 74 and a collecting mechanism 2 75. A movable cover plate 72 is installed on the inner side of the movable groove 71, and the collecting mechanism 1 74 and the collecting mechanism 2 75 are respectively fixed to the inner side of the upper end of the sample tube clamp 73. The movable groove 71 is opened on the inner side of the upper end of the sample injection box 1, and the sample tube clamp 73 is fixed to the right side of the interior of the sample injection box 1. The left ends of the collecting mechanism 1 74 and the collecting mechanism 2 75 are respectively connected to the inner side of the right end of the diversion tube 4. The movable groove 71 and the movable cover plate 72 are both rectangular and arranged on the inner side of the upper end of the sample injection box 1, which is convenient for carrying and taking the collecting mechanism 1 74 and the collecting mechanism 2 75. The sample tube clamp 73 is provided with two groups, and is distributed in a group of two at the front and rear sides of the interior of the sample injection box 1, thereby respectively providing auxiliary reinforcement for the collecting mechanism 1 74 or the collecting mechanism 2 75.

[0027] See also Figure 5 The utility model provides a technical solution for a closed sampling device for hazardous gases: a closed sampling device for hazardous gases, a collecting mechanism 74 comprising a connecting tube 741, a collecting tube 742, a movable plug 743, a fixed sleeve rod 744, a sleeve spring 745 and a stopper 746. The left end of the connecting tube 741 is connected to the collecting tube 742, and a stopper 746 is fixed to the lower side of the inner part of the collecting tube 742. A fixed sleeve rod 744 is installed on the inner side of the right end of the movable plug 743, and a sleeve spring 745 is sleeved on the outer side of the right end of the fixed sleeve rod 744, and the fixed sleeve rod 744 is elastically matched with the stopper 746 through the sleeve spring 745. The connecting tube 741 is fixed to the inner side of the upper end of the sample tube clamp 73, and the left end of the collecting tube 742 is connected to the diversion tube 4. The inner side of the right end is connected, and the collecting mechanism 1 74 and the collecting mechanism 2 75 are respectively connected to the connecting pipes on the front and rear sides of the right end of the diversion pipe 4 through the collecting pipe 742, so as to facilitate the diversion and collection of the gas. The movable plug 743 is arranged in a rectangular shape, and a rectangular notch consistent with the left end of the movable plug 743 is opened on the left side of the interior of the connecting pipe 741, so that the movable plug 743 can cooperate with the left side notch inside the connecting pipe 741 to perform one-way blocking, thereby preventing gas leakage. The block 746 is fixed on the upper and lower sides of the middle part of the inner side of the connecting pipe 741, and the added length of the two groups of block blocks 746 is greater than the lateral length of the sleeve spring 745, so as to cooperate with the sleeve spring 745 to achieve an elastic reset effect.

[0028] When in use, the movable cover 72 on the upper right side of the sample injection box 1 is opened, and the collection tubes 742 on the left ends of the collection mechanism 1 74 and the collection mechanism 2 75 are respectively inserted into the connecting tubes on the front and rear sides of the right end of the shunt tube 4. After being inserted into the shunt tube 4, the collection tubes 742 on the left ends of the collection mechanism 1 74 and the collection mechanism 2 75 are respectively connected to the middle inner side of the soft film plate 6;

[0029] The mini air pump 2 then uses a mechanical device to make the diaphragm inside the pump do reciprocating motion, thereby compressing and stretching the air in the fixed volume pump chamber to form a vacuum negative pressure, creating a pressure difference between the pump suction port and the external atmospheric pressure. Under the action of the pressure difference, the dangerous gas is sucked into the pump chamber and then discharged from the exhaust port without contaminating the inside of the connecting pipe 741 and generating medium.

[0030] When the mini air pump 2 extracts dangerous gas, it extracts the dangerous gas from the air inlet pipe 3 and sends the gas to the inner sides of the collecting mechanism 1 74 and the collecting mechanism 2 75 respectively through the diverter pipe 4. After the harmful gas enters the inner side of the connecting pipe 741, the force brought by the harmful gas pushes the movable plug 743, and causes the movable plug 743 to move synchronously to the right along the inside of the collecting pipe 742 with the fixed sleeve rod 744. Then, when the movable plug 743 cancels the blocking effect on the left side of the gap inside the connecting pipe 741, the harmful gas enters the inner side of the connecting pipe 741 for collection and storage, and the fixed sleeve rod 744 is elastically reset by the sleeve spring 745 and the stopper 746, and causes the movable plug 743 to continue to block the gap of the connecting pipe 741, thereby achieving the collection effect of one-way gas extraction and storage;

[0031] Finally, by opening the movable cover 72, the collection mechanism 1 74 and the collection mechanism 2 75 can be easily taken out and assembled.

[0032] The control method of the present invention is to manually start and stop the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field. Moreover, the present invention is mainly used to protect mechanical devices. Therefore, the control method and wiring arrangement are not explained in detail in the present invention.

[0033] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. In addition, the present invention is mainly used to protect mechanical devices, so the control method and circuit connection are no longer explained in detail in the present invention.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealed sampling device for hazardous gas, comprising a sampling box (1), a mini air pump (2), an air inlet pipe (3), a diverter pipe (4), a fixing plate (5) and a soft film plate (6), wherein the mini air pump (2) is installed at the left end of the sampling box (1), the left and right sides of the mini air pump (2) are connected to the air inlet pipe (3) and the diverter pipe (4) respectively, the right end of the diverter pipe (4) is fixed to the inner side of the fixing plate (5), and the soft film plate (6) is provided on the inner side of the right end of the diverter pipe (4); Its characteristics are: The invention also includes a collecting device (7), which is installed on the inner side of the sample injection box (1). The collecting device (7) includes a movable groove (71), a movable cover plate (72), a sample tube clamp (73), a collecting mechanism 1 (74) and a collecting mechanism 2 (75). The movable cover plate (72) is installed on the inner side of the movable groove (71). The collecting mechanism 1 (74) and the collecting mechanism 2 (75) are respectively fixed to the inner side of the upper end of the sample tube clamp (73). The movable groove (71) is opened on the inner side of the upper end of the sample injection box (1). The sample tube clamp (73) is fixed to the right side of the interior of the sample injection box (1). The left ends of the collecting mechanism 1 (74) and the collecting mechanism 2 (75) are respectively connected to the inner side of the right end of the shunt tube (4).

2. A sealed hazardous gas injection device according to claim 1, characterized in that: The collecting mechanism (74) comprises a connecting tube (741), a collecting tube (742), a movable plug (743), a fixed sleeve rod (744), a sleeve spring (745) and a stopper (746). The left end of the connecting tube (741) is connected to the collecting tube (742), and a stopper (746) is fixed to the inner lower side of the collecting tube (742). The inner side of the right end of the movable plug (743) is provided with a fixed sleeve rod (744), and the outer side of the right end of the fixed sleeve rod (744) is sleeved with a sleeve spring (745), and the fixed sleeve rod (744) is elastically matched with the stopper (746) through the sleeve spring (745). The connecting tube (741) is fixed to the inner side of the upper end of the sample tube clamp (73), and the left end of the collecting tube (742) is connected to the inner side of the right end of the diversion tube (4).

3. The sealed sampling device for hazardous gases according to claim 1, characterized in that: The movable groove (71) and the movable cover plate (72) are both rectangular and arranged on the inner side of the upper end of the sample injection box (1).

4. The sealed sampling device for hazardous gases according to claim 1, characterized in that: The sample tube clamps (73) are provided in two groups and are arranged in pairs on the front and back sides of the interior of the sample injection box (1).

5. The sealed sampling device for hazardous gases according to claim 2, characterized in that: The collecting mechanism 1 (74) and the collecting mechanism 2 (75) are respectively connected to the connecting pipes at the front and rear sides of the right end of the diversion pipe (4) through the collecting pipe (742).

6. The sealed sampling device for hazardous gases according to claim 2, characterized in that: The movable plug (743) is arranged in a rectangular shape, and a rectangular notch is provided on the left side of the interior of the connecting pipe (741) in accordance with the left end of the movable plug (743).

7. The sealed sampling device for hazardous gases according to claim 2, characterized in that: The stoppers (746) are fixed oppositely to the upper and lower sides of the middle portion of the inner side of the connecting tube (741), and the sum of the lengths of the two groups of stoppers (746) is greater than the transverse length of the sleeve spring (745).

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