Device capable of carrying out safety detection on toxic and harmful gas in sampling bag

Abstract

The utility model discloses a device capable of carrying out safety detection on poisonous and harmful gas in a sampling bag. The device comprises a poisonous and harmful gas detector body, an electromagnetic valve, an electric push rod, a supporting plate, a waste gas bag, an air compressor and the sampling bag, a fixing plate and a fixing table are mounted on the supporting plate; the gas detector body is mounted on the fixing plate; one side of an electric push rod is mounted on the inner side of one fixing plate, a top plate is mounted on the other side of the electric push rod, and a limiting plate is mounted on one side of the fixing table; an upper magnet is mounted on the lower side of the detection cavity air inlet pipe; a lower magnet is mounted at the upper end of the sampling bag exhaust pipe; the side end of the air inlet pipe of the detection cavity is provided with a communicating pipe, the other end of the communicating pipe is connected with one end of a first solenoid valve, the upper end of the detection cavity is provided with a breather pipe, and the outer side end of the breather pipe is connected with an air compressor exhaust pipe through series connection of two ends of a second solenoid valve. According to the device, poisonous and harmful gas can enter the detection cavity as all as possible, a better detection effect is achieved, and the detected poisonous and harmful gas can enter the waste gas bag.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection equipment, in particular to a device capable of safely detecting toxic and harmful gases in a sampling bag. Background Art

[0002] Toxic and harmful gas detector is a device that mainly detects toxic and harmful gases and analyzes their components. In the prior art, before the toxic and harmful gas detector is used for detection, the detection personnel connect the exhaust pipe of the sampling bag to the air inlet pipe of the detector, and then turn the power switch of the negative pressure fan of the detector to the right (the blades rotate clockwise). The negative pressure fan is powered on to draw the toxic and harmful gases in the sampling bag into the detection chamber inside the detector. After the detection head in the detection chamber detects, the relevant mechanisms and circuits in the detector work together to obtain various data of the detected gas (including the types and contents of various gases in the gas) and display them on the display screen. Then, the detection personnel obtain various data of the detected toxic and harmful gases by reading the display screen.

[0003] In order to reduce the environmental pollution caused by the direct discharge of toxic and harmful gases into the atmosphere after the test, and the impact on the health of personnel in the test room, after the test is completed, the tester turns the power switch of the negative pressure fan of the detector to the left (the blades rotate counterclockwise), and the negative pressure fan is powered on to discharge the toxic and harmful gases in the test chamber into the sampling bag in reverse, and then uniformly treat them harmlessly. Although the existing toxic and harmful gas detectors have met the needs to a certain extent, they are still limited by the structure and have the following technical problems. First: When the negative pressure fan draws in toxic and harmful gases, when the specific gravity of the toxic and harmful gases is large and greater than the specific gravity of air, it cannot guarantee that all the gases will enter the test chamber, which will more or less have an adverse effect on the final test effect. Second: When the blades of the negative pressure fan rotate in the opposite direction and toxic and harmful gases enter the sampling bag, the negative pressure force is limited and the toxic and harmful gases after detection cannot be effectively discharged into the sampling bag. After the residual gas in the detection chamber is discharged after the subsequent detection, the residual toxic and harmful gases will inevitably be discharged into the air, which will more or less have an adverse effect on the safety and health of the detection personnel. In summary, it is very necessary to provide an analysis device that can effectively allow all toxic and harmful gases in the sampling bag to enter the detection chamber, and can allow the residual toxic and harmful gases after detection to enter the waste bag as much as possible. Utility Model Content

[0004] In order to overcome the shortcomings of existing toxic and harmful gas detectors, which cannot effectively ensure that all toxic and harmful gases to be detected enter the detection chamber due to structural limitations, and relatively more toxic and harmful gases will be discharged into the air after detection, which has adverse effects on the environment and the health of detection personnel, the utility model provides a device based on the toxic and harmful gas detector body, which can ensure that all toxic and harmful gases detected enter the detection chamber as much as possible through compression during detection, and after the inspection, the toxic and harmful gases after detection are effectively input into the waste gas bag as much as possible through compressed air, which can play a relatively good protective role on the environment and the health of detection personnel. It can also be used to safely detect toxic and harmful gases in sampling bags.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A device capable of safely detecting toxic and harmful gases in a sampling bag comprises a toxic and harmful gas detector body, a solenoid valve, an electric push rod, a support plate, an exhaust gas bag, an air compressor, and a sampling bag; characterized in that the two side ends of the support plate are respectively provided with fixed plates, and the lower end of the gas detector body is provided with the fixed plate; a fixed platform is provided with the upper end of the support plate, one side end of the electric push rod is transversely provided with the inner side of one of the fixed plates, a top plate is provided with the other side end of the electric push rod, and a limit plate is provided with one side of the fixed platform; an upper magnet is provided with the lower side of the air inlet pipe of the detection chamber of the gas detector body, a lower magnet is provided with the upper end of the exhaust pipe of the sampling bag, and the sampling bag is attracted under the upper magnet through the lower magnet; there are at least two solenoid valves, a connecting pipe is provided with the side end of the air inlet pipe of the detection chamber, the other end of the connecting pipe is connected with one end of the first solenoid valve, a vertical pipe is provided with the other end of the first solenoid valve, and the outer side of the lower end of the vertical pipe is externally threaded; a ventilation pipe is provided with the upper end of the detection chamber, and the outer side end of the ventilation pipe is connected with the exhaust pipe of the air compressor in series through the two ends of the second solenoid valve.

[0007] Preferably, the solenoid valve is a normally closed valve core solenoid valve.

[0008] Preferably, the upper magnet and the lower magnet have the same outer diameter.

[0009] Preferably, the outer diameters of the top plate and the limiting plate are consistent and larger than the outer diameter of the side end of the gas sampling bag.

[0010] Preferably, there are multiple waste gas bags, the air inlet pipe of each waste gas bag has an internal thread, and the air inlet pipe and the vertical pipe of the waste gas bag are connected together through threads.

[0011] Preferably, the capacity of the waste gas bag is greater than that of the sampling bag.

[0012] Compared with the prior art, the utility model has the following beneficial effects: (1) Before testing, the utility model attracts the lower magnet and the upper magnet at the upper end of the sampling bag together, and then opens the manual valve of the sampling bag, so that the toxic and harmful gases in the sampling bag will enter the detection chamber, and the sampling bag is compressed by the electric push rod, so that the toxic and harmful gases can enter the detection chamber as much as possible, which can achieve better detection data effect. (2) After the test is completed, after the test personnel open the corresponding solenoid valve, the toxic and harmful gases in the detection chamber can enter the exhaust bag as much as possible, reducing the adverse effects of residual toxic and harmful gases directly discharged into the air on the environment and the health of the test personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 It is a schematic diagram of the structure of the utility model.

[0015] Figure 2 This is a circuit diagram of the utility model. DETAILED DESCRIPTION

[0016] Figure 1 , 2As shown in the figure, a device capable of safely detecting toxic and harmful gases in a sampling bag comprises a toxic and harmful gas detector body 1, a power switch, solenoid valves DC1 and DC2, an electric push rod M1, a support plate 2, an exhaust bag 3, an air compressor (not shown in the figure), a power supply mechanism T, and a sampling bag 4; a fixing plate 5 is vertically welded to the left and right ends of the support plate 2, and the two sides of the lower end of the shell of the gas detector body are respectively welded to the two fixing plates 5; a fixing platform 6 is welded to the middle part of the upper end of the support plate 2, the right end of the cylinder of the electric push rod M1 is transversely bolted to the middle part of the inner side of the right fixing plate 5, a rectangular top plate 7 is welded to the left end of the movable column of the electric push rod M1, and a limit plate 8 is vertically welded to the left end of the fixing platform 6; an annular hollow upper permanent magnet 9 is glued to the lower side of the inlet pipe of the detection chamber of the gas detector body, and an annular hollow rubber sealing pad 10 (sealing function) is glued to the lower end of the upper magnet 9. A hollow annular lower magnet 11 is glued to the upper end of the exhaust pipe of the gas sampling bag 4 of the detector body, and the sampling bag 4 is attracted to the upper magnet 9 through the lower magnet 11; there are two solenoid valves, and a connecting pipe 12 that is interconnected with the interior is welded to the left end of the air inlet pipe of the detection chamber of the toxic and harmful gas detector body 1, and the lower end of the connecting pipe 12 is threadedly connected to the upper end of the first solenoid valve DC1, and the other end of the first solenoid valve DC1 is threadedly connected to a vertical pipe 13, and the outer side of the lower end of the vertical pipe 13 has an external thread; a ventilation pipe 14 that is interconnected with the interior is welded to the upper rear end of the detection chamber, and the outer end of the ventilation pipe 14 is connected to the exhaust pipe of the air compressor in series with the air inlet and exhaust ends of the second electromagnetic DC2 through a hose; the power switch and the power supply mechanism T are installed in the component box 15, and the component box 15 is installed at the front right outer end of the shell of the gas detector body 1; the power input terminals 1 and 2 of the power supply mechanism T are connected to the two poles of the AC 220V power supply through wires. The power output terminals 3 and 4 of the power supply mechanism T are connected to the power input terminals 1 and 2 of the three power switches S1 and the power input terminals of S2 and S3 through wires, and the power output terminals of the power switches S2 and S3 and the negative power output terminal 4 of the power supply mechanism T are connected to the power input terminals of the two solenoid valves DC1 and DC2 through wires. The 3, 4 and 5, 6 pins of the power switch S1 are connected to the positive and negative and negative and positive and negative power input terminals of the electric push rod M1 through wires.

[0017] Figure 1 , 2 As shown in , the solenoid valves DC1 and DC2 are normally closed valve core solenoid valves. The upper magnet 9, the lower magnet 11, and the sealing gasket 10 have the same outer diameter. The top plate 7 and the limit plate 8 have the same outer diameter, and are larger than the side end outer diameter of the gas sampling bag 4. There are multiple waste gas bags 3, and the upper end of the air inlet pipe of each waste gas bag 3 has a manual valve, and the inner side of the air inlet pipe at the upper end of the manual valve has an internal thread. The air inlet pipe of each waste gas bag is connected to the lower end of the vertical pipe 13 through a thread. The capacity of the waste gas bag 3 is greater than that of the sampling bag 4.

[0018] Figure 1 , 2 As shown in , the other working principles and working processes of the new toxic and harmful gas detector body 1 are completely consistent with the working principles and working processes of existing toxic and harmful gas detectors. Before the test, the tester attracts the lower magnet 11 at the upper end of the exhaust pipe of the gas sampling bag 4 under the upper magnet 9, and the air inlet pipe of one of the exhaust bags is connected to the lower end of the vertical pipe 13 through threads. Then, the manual valve at the upper end of the exhaust pipe of the sampling bag 4 is opened, and the power switch of the negative pressure fan of the detector body 1 is turned to the right by hand (the blades rotate clockwise). The negative pressure fan is powered on to draw the toxic and harmful gases in the sampling bag into the internal detection chamber of the detector body 1. After the detection head in the detection chamber detects, the relevant mechanisms and circuits in the detector work together to obtain the gas levels detected. Various data (including data on the types and contents of various gases in the gas) are displayed on the display screen, and then the test personnel obtain various data of the detected toxic and harmful gases by reading the display screen of the detector body 1; after the detection of the detector is completed, the test personnel turn the power switch of the negative pressure fan of the detector to the left (the blades rotate counterclockwise) and open the valve of the waste gas bag. The negative pressure fan is powered on to discharge the toxic and harmful gases in the detection chamber in reverse into the waste gas bag 3, and then they are uniformly treated harmlessly (after the detection is completed, the waste gas bag valve is closed, and the waste gas bag and sampling bag are removed to complete the entire process). After the AC 220V power supply enters the power supply mechanism T, the 3rd and 4th pins of the power supply mechanism T output a stable DC 12V power supply that enters the power input end of the three power switches. Specifically, before the staff detects, after the manual valve of the sampling bag is opened, the power switch S1 handle is turned to the left, and the 1st and 2nd pins and the 3rd and 4th pins of the power switch S1 are connected respectively. The positive and negative poles of the power input end of the electric push rod M1 are energized, and its movable column pushes the top plate 7 to move to the left, thereby compressing the sampling bag 4, so that the toxic and harmful gases in the sampling bag 4 can enter the detection chamber as completely as possible (turn off the power switch after it is in place). After the subsequent detection is completed, the worker turns the power switch S1 handle to the right, and the 1st and 2nd pins and the 5th and 6th pins of the power switch S1 are connected respectively. The negative and positive poles of the power input end of the electric push rod M1 are energized, and its movable column drives the top plate 7 to move to the right, thereby separating the top plate 7 and the sampling bag 4 (turn off the power switch after it is in place), and the sampling bag 4 can be easily removed. When the test is completed, the test personnel turn on the power switches S2 and S3 respectively, and the two solenoid valves DC1 and DC2 are electrically opened, so that the compressed air in the air compressor will enter the test chamber, and cooperate with the negative pressure fan to discharge the residual toxic and harmful gases in the test chamber into the waste gas bag 3 as much as possible. After the waste gas bag 3 is fully inflated, the power switches S2 and S3 are turned off, and then the manual valve of the waste gas bag is closed and the waste gas in the waste gas bag is removed for further treatment.

[0019] Figure 1 , 2As shown above, the new type can make the toxic and harmful gases enter the detection chamber as much as possible by compressing the sampling bag through the electric push rod, and can relatively achieve better detection data effect; after the detection is completed, the detection personnel can open the corresponding solenoid valve to make the toxic and harmful gases in the detection chamber enter the exhaust bag as much as possible, reducing the adverse effects of residual toxic and harmful gases directly discharged into the air on the environment and health. Solenoid valves DC1 and DC2 are normally closed valve core solenoid valves with a power of 2W; electric push rod M1 is a reciprocating electric push rod with a working voltage of DC 12V and 20W; power supply mechanism T is an AC 220V to DC 12V power module with a power of 2KW.

[0020] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the utility model.

[0021] In addition, it should be understood that although the present specification is described according to the implementation mode, the implementation mode does not only include an independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device capable of safely detecting toxic and harmful gases in a sampling bag, comprising a toxic and harmful gas detector body, a solenoid valve, an electric push rod, a support plate, an exhaust bag, an air compressor, and a sampling bag; characterized in that: Fixed plates are respectively installed on both side ends of the support plate, and the lower end of the gas detector body is installed on the fixed plates; a fixed platform is installed on the upper end of the support plate, one side end of the electric push rod is horizontally installed on the inner side of one of the fixed plates, and a top plate is installed on the other side end of the electric push rod, and a limit plate is installed on one side of the fixed platform; an upper magnet is installed on the lower side of the air inlet pipe of the detection chamber of the gas detector body, and a lower magnet is installed on the upper end of the exhaust pipe of the sampling bag, and the sampling bag is attracted under the upper magnet through the lower magnet; there are at least two solenoid valves, a connecting pipe is installed on the side end of the air inlet pipe of the detection chamber, the other end of the connecting pipe is connected to one end of the first solenoid valve, and a vertical pipe is installed on the other end of the first solenoid valve, and the outer side of the lower end of the vertical pipe is externally threaded; a ventilation pipe is installed on the upper end of the detection chamber, and the outer end of the ventilation pipe is connected in series with the exhaust pipe of the air compressor through the two ends of the second solenoid valve.

2. A device capable of safely detecting toxic and harmful gases in a sampling bag according to claim 1, characterized in that: The solenoid valve is a normally closed spool solenoid valve.

3. A device for safely detecting toxic and harmful gases in a sampling bag according to claim 1, characterized in that: The outer diameters of the upper magnet and the lower magnet are consistent.

4. The device for safely detecting toxic and harmful gases in a sampling bag according to claim 1 is characterized in that: The outer diameters of the top plate and the limit plate are consistent and larger than the outer diameter of the side end of the gas sampling bag.

5. The device for safely detecting toxic and harmful gases in a sampling bag according to claim 1 is characterized in that: There are multiple waste gas bags, each of which has an air inlet pipe with an internal thread, and the air inlet pipe and the vertical pipe of the waste gas bag are connected together through threads.

6. The device for safely detecting toxic and harmful gases in a sampling bag according to claim 1, characterized in that: The capacity of the waste gas bag is greater than that of the sampling bag.

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