Harmful gas detection and alarm device for chemical filling workshop

Abstract

The invention relates to the technical field of harmful gas detection and alarm, in particular to a chemical filling workshop harmful gas detection and alarm device which comprises a base, a gas detector body is installed on the top face of the base, the air inlet end of the gas detector body is communicated with an air inlet pipe, and the other side of the gas detector body is communicated with an exhaust assembly. An exhaust pipe is arranged on the exhaust assembly, the exhaust pipe is communicated with the air outlet end of the gas detector body, the air inlet pipe is communicated with a telescopic pipe through a connecting assembly, a movable seat is arranged on the bottom surface of the base, a multi-stage electric cylinder is mounted on the top surface of the movable seat through a mounting seat, and a sampling round block is mounted on a piston rod of the multi-stage electric cylinder; the upper end of the telescopic pipe is communicated with the interior of the sampling round block; and an audible-visual-electric alarm is mounted on the top surface of the gas detector body. The monitoring flexibility and convenience of the gas detector body are improved, the device covers different height areas in the chemical filling workshop, and it is ensured that no dead angle and no omission exist in harmful gas monitoring.

Description

Technical Field

[0001] The invention relates to the technical field of harmful gas detection and alarm, in particular to a harmful gas detection and alarm device in a chemical filling workshop. Background Art

[0002] In chemical filling workshops, harmful gases may be generated due to material leakage, improper operation or equipment failure during the production process. If these gases are not detected in time and effectively controlled, they will pose a serious threat to the safety of workers' lives and the normal operation of production equipment. Therefore, it is very important to install harmful gas detection and alarm devices for chemical filling workshops;

[0003] After searching, the Chinese patent with announcement number CN210402655U provides an automatic monitoring alarm system for chemical workshops. According to the actual needs of waterproof material chemical workshops, the required types of detection sensors are installed, and the detection result information is collected, summarized and analyzed, so as to monitor multiple harmful gases and dust in the chemical workshop at the same time. It has the advantages of high flexibility, wide coverage and low monitoring cost;

[0004] However, it was found during use that the installation location of the device is relatively fixed and the installation method is relatively simple. It is usually installed on the wall or on the top of the workshop. Its monitoring range is limited by the installation location and sensor performance. In large chemical filling workshops, due to the complex equipment layout and open space, fixed detectors are difficult to fully cover all potential danger areas, which limits its monitoring flexibility and adaptability, and it is difficult to meet the needs of real-time monitoring and early warning. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a harmful gas detection and alarm device for a chemical filling workshop, which improves the monitoring flexibility and convenience of the gas detector body. The device covers different height areas inside the chemical filling workshop, ensuring that the harmful gas is monitored without blind spots or omissions.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a harmful gas detection and alarm device for a chemical filling workshop, comprising a base, a gas detector body is installed on the top surface of the base, the air inlet end of the gas detector body is connected with an air inlet pipe, the other side of the gas detector body is connected with an exhaust assembly, the exhaust assembly is provided with an exhaust pipe, the exhaust pipe is connected with the air outlet end of the gas detector body, the air inlet pipe is connected with a telescopic tube through a connecting assembly, a movable seat is provided on the bottom surface of the base, a multi-stage electric cylinder is installed on the top surface of the movable seat through a mounting seat, a sampling round block is installed on the piston rod of the multi-stage electric cylinder, the upper end of the telescopic tube is connected with the inside of the sampling round block, and an audible and optical alarm is installed on the top surface of the gas detector body.

[0007] Preferably, mounting corner blocks are respectively installed at the four corners of the bottom surface of the base, mounting holes are opened on the mounting corner blocks, the bottom surface of the base is symmetrically structured with two T-shaped grooves, and the side wall of the base is symmetrically structured with two connecting blocks fixedly provided.

[0008] Through the above technical solution, when the gas detector body is installed on the wall or the top of the chemical filling workshop, the gas detector body is installed on the top surface of the base, and the installation can be completed by installing the corner blocks and the mounting holes.

[0009] Preferably, the top surface of the movable seat is symmetrically structured and fixed with two T-shaped blocks, the base is plug-in-matched with the T-shaped block via a T-shaped slot, the connecting block is clamped with the T-shaped block, a first fastener is plugged into the top surface of the T-shaped block, the upper end of the T-shaped block is threadedly connected to the threaded end of the first fastener via a threaded hole, and electric drive wheels are respectively installed at the four corners of the movable seat.

[0010] Through the above technical solution, the base is plugged into the T-shaped block through the T-shaped slot, and the connecting block is plugged into the T-shaped block. The base is fixed by the first fastener and the T-shaped block threaded connection. After the fixation is completed, the mobile seat is driven by the electric drive wheel to move, so that the gas detector body moves synchronously, which is convenient for walking to different detection and use positions inside the chemical filling workshop.

[0011] Preferably, the outer wall of the sampling block is provided with a plurality of conical holes in a circular array structure, a suction groove is provided inside the sampling block, the suction groove is communicated with the conical holes, the outer wall of the sampling block is plugged into and matched with the piston rod of the multi-stage electric cylinder located in the middle, and the upper end of the piston rod of the multi-stage electric cylinder located in the middle is fixedly connected to the sampling block by a second fastener.

[0012] Through the above technical solution, the telescopic tube generates negative pressure. At this time, the suction groove generates negative pressure to suck the air around the sampling block through the conical hole and transport it to the inside of the gas detector body for detection.

[0013] Preferably, the connecting assembly includes a cylinder, which is fixed on the outer peripheral wall of the lower end of the telescopic tube. The cylinders are symmetrically structured and provided with two, and two sealing rings are installed on the outer peripheral wall of the lower end of the telescopic tube. The lower end of the telescopic tube is plugged into the air intake pipe, and an elastic rubber ring is fixed on the side wall of the telescopic tube close to the air intake pipe, and the elastic rubber ring abuts against the inside of the air intake pipe.

[0014] Preferably, two waist holes are opened on the outer peripheral wall of one side of the air inlet pipe close to the telescopic tube, and the two waist holes are symmetrical in structure. The waist holes are connected with arc-shaped opening grooves, and the arc-shaped opening grooves are centrally symmetrical in structure. The cylindrical outer peripheral wall is slidingly connected to the waist holes and the arc-shaped opening grooves respectively.

[0015] Through the above technical solution, the cylinder moves along the arc-shaped opening groove to the inside of the waist hole. The movement of the telescopic tube drives the sealing ring and the elastic rubber ring to move synchronously. After the insertion is completed, the outer peripheral wall of the sealing ring abuts against the inner wall of the intake pipe to form an effective seal.

[0016] Preferably, a fixing block is fixedly provided inside the air intake pipe, a servo motor is mounted on the fixing block via a front end mounting seat, an output shaft of the servo motor is rotatably connected to the fixing block, and a suction fan blade is sleeved on the output shaft of the servo motor.

[0017] Through the above technical solution, the output shaft of the servo motor drives the suction fan blades to rotate, sucking the outer end of the intake pipe, so that the telescopic pipe connected thereto generates negative pressure.

[0018] Preferably, the exhaust assembly comprises a protective net, and two protective nets are provided, and the two protective nets are respectively installed inside the exhaust pipe.

[0019] Through the above technical solution, the adsorption material corresponding to the harmful gas is filled between the two protective nets of the exhaust pipe.

[0020] Preferably, a sealing flap is rotatably connected to the outer side of the exhaust pipe, a handle is fixedly provided at the middle of the outer wall of the sealing flap, and a positioning column is fixedly provided at the upper end of the sealing flap.

[0021] Preferably, two elastic members are fixedly provided on the outer wall of the exhaust pipe in a symmetrical structure, and an arc-shaped clamping block is provided on the elastic member, and the inner concave part of the arc-shaped clamping block is clamped and matched with the outer peripheral wall of the positioning column.

[0022] Through the above technical solution, the sealing flap is rotated by pulling the handle, so that the positioning column and the arc-shaped block of the elastic member are separated, which facilitates the opening and closing of the sealing flap and the replacement of the adsorption material.

[0023] Beneficial effects of the present invention:

[0024] 1. Install the gas detector body on the base. The base can be used to conveniently install the gas detector body in a suitable position for use. It is convenient to install it on the wall or top of the chemical filling workshop. When patrol monitoring is required in the chemical filling workshop, the gas detector body can be installed on the mobile seat through the base. At the same time, the height of the sampling block is adjusted by the multi-stage electric cylinder. The two ends of the telescopic tube are connected to the air inlet pipe and the sampling block through the connecting components. The sampling block transports gases of different heights to the inner wall of the gas detector body through the telescopic tube and the air inlet pipe. The sampling block is convenient for detecting gases at different heights inside the chemical filling workshop. Once the concentration of harmful gases is detected to exceed the preset safety threshold, the sound and light alarm on the top surface of the gas detector body will be immediately activated to send out sound and light alarm signals to remind the operator to take timely measures to deal with it, thereby improving the monitoring flexibility and convenience of the gas detector body. The device covers different height areas inside the chemical filling workshop to ensure that the monitoring of harmful gases is without blind spots and omissions.

[0025] 2. When the gas detector body is installed on the wall or top of the chemical filling workshop, after the gas detector body is installed on the top surface of the base, the installation can be completed by installing the corner blocks and the mounting holes. When the gas detector body needs to be moved for use, the base is plugged into the T-block through the T-slot. At this time, the connecting block is plugged into the T-block, and the base is fixed by the first fastener and the T-block threaded connection. After the fixation is completed, the mobile seat is driven to move by the electric drive wheel, so that the gas detector body moves synchronously, which is convenient for walking to different detection and use positions inside the chemical filling workshop. At the same time, the sampling round block is pushed to different heights for sampling through the multi-stage electric cylinder, ensuring the accuracy and comprehensiveness of the monitoring results, and reducing the difficulty and cost of use.

[0026] 3. After completing the installation and connection of the telescopic tube and the sampling block through the connecting assembly, the output shaft of the servo motor drives the suction fan blades to rotate, and the outer end of the air inlet pipe is sucked, so that the telescopic tube connected to it generates negative pressure. At this time, the suction groove generates negative pressure to suck the air around the sampling block through the conical hole, and transports it to the inside of the gas detector body for detection. The gas detector body will analyze the concentration of harmful gases and determine whether to issue an alarm signal based on the preset safety threshold. After the detection is completed, the gas can be discharged to the outside through the exhaust pipe, which improves work efficiency, ensures that harmful gases are discovered and handled in time, and reduces safety hazards.

[0027] 4. Insert one end of the telescopic tube into the air inlet pipe, so that the cylinder moves along the arc-shaped opening groove to the inside of the waist hole. When the telescopic tube moves, the sealing ring and the elastic rubber ring are driven to move synchronously. After the insertion is completed, the outer peripheral wall of the sealing ring abuts against the inner wall of the air inlet pipe to form an effective seal. At this time, the elastic rubber ring is compressed. After moving the cylinder to the side of the waist hole close to the gas detector body, release the telescopic tube and use the elastic potential energy of the elastic rubber ring to push the telescopic tube to move away from the air inlet pipe. At this time, the cylinder moves closer to one side of the telescopic tube along the waist hole to complete the installation of the telescopic tube, which adapts to the use of the gas detector body installed in different positions, simplifies the installation and disassembly process of the telescopic tube, improves work efficiency, ensures that the gas detector body accurately detects the gas concentration, and improves the accuracy of the detection results.

[0028] 5. Pull the handle to drive the sealing flap to rotate, separate the positioning column from the arc-shaped block of the elastic part, fill the corresponding adsorption material of the harmful gas (such as activated carbon) between the two protective nets of the exhaust pipe, and then rotate the sealing flap in the opposite direction to engage the positioning column with the arc-shaped block, and the sealing flap returns to its initial sealing state. The gas detected by the gas detector body is adsorbed by the adsorption material and discharged to the outside through the upper end of the exhaust pipe, which facilitates the adsorption of the detected gas and effectively removes harmful gas components, ensuring the continuity and stability of the gas treatment process and improving the safety and environmental protection of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a rear view of the overall structure of the present invention;

[0031] Figure 3 It is a schematic diagram of the base structure assembly of the present invention;

[0032] Figure 4 It is a schematic diagram of the sampling circular block structure of the present invention;

[0033] Figure 5 It is a schematic diagram of the assembly of the air intake pipe structure of the present invention;

[0034] Figure 6 It is a schematic diagram of the structure of the suction fan blade of the present invention;

[0035] Figure 7 It is a schematic diagram of the exhaust assembly structure of the present invention;

[0036] Figure 8 It is a schematic diagram of the elastic member structure of the present invention.

[0037] In the figure: 1. base; 2. gas detector body; 3. air inlet pipe; 4. exhaust assembly; 401. exhaust pipe; 402. protective net; 403. sealing flap; 404. handle; 405. positioning column; 406. elastic member; 407. arc-shaped block; 5. telescopic tube; 6. moving seat; 7. multi-stage electric cylinder; 8. sampling round block; 9. mounting angle block; 10. mounting hole; 11. T-slot; 12. connecting block; 13. T-block; 14. first fastener; 15. electric drive wheel; 16. connecting assembly; 1601. cylinder; 1602. sealing ring; 1603. elastic rubber ring; 1604. waist hole; 1605. arc-shaped opening groove; 17. conical hole; 18. suction groove; 19. second fastener; 20. sound and light alarm; 21. fixing block; 22. servo motor; 23. suction fan blade. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0039] Embodiment 1

[0040] like Figures 1 to 4 As shown, the present embodiment provides a harmful gas detection alarm device for a chemical filling workshop, including a base 1, a gas detector body 2 is installed on the top surface of the base 1, the air inlet end of the gas detector body 2 is connected with an air inlet pipe 3, the other side of the gas detector body 2 is connected with an exhaust assembly 4, the exhaust assembly 4 is provided with an exhaust pipe 401, the exhaust pipe 401 is connected to the air outlet end of the gas detector body 2, the air inlet pipe 3 is connected with a telescopic tube 5 through a connecting assembly 16, a movable seat 6 is provided on the bottom surface of the base 1, a multi-stage electric cylinder 7 is installed on the top surface of the movable seat 6 through a mounting seat, a sampling round block 8 is installed on the piston rod of the multi-stage electric cylinder 7, the upper end of the telescopic tube 5 is connected to the inside of the sampling round block 8, and an audible and optical alarm 20 is installed on the top surface of the gas detector body 2.

[0041] Mounting corner blocks 9 are respectively installed at the four corners of the bottom surface of the base 1, and mounting holes 10 are opened on the mounting corner blocks 9. The bottom surface of the base 1 is a symmetrical structure with two T-shaped grooves 11, and the side wall of the base 1 is a symmetrical structure with two connecting blocks 12 fixedly provided. When the gas detector body 2 is installed on the wall or the top of the chemical filling workshop, after the gas detector body 2 is installed on the top surface of the base 1, the installation can be completed by installing the corner blocks 9 and the mounting holes 10.

[0042] The top surface of the movable seat 6 is symmetrically structured and fixed with two T-blocks 13. The base 1 is plugged into the T-block 13 through a T-slot 11, and the connecting block 12 is clamped with the T-block 13. A first fastener 14 is plugged into the top surface of the T-block 13. The upper end of the T-block 13 is threadedly connected to the threaded end of the first fastener 14 through a threaded hole, and electric drive wheels 15 are respectively installed at the four corners of the movable seat 6; the base 1 is plugged into the T-block 13 through the T-slot 11, and the connecting block 12 is plugged into the T-block 13 at this time. The base 1 is fixed by the first fastener 14 and the T-block 13 threaded connection. After the fixation is completed, the movable seat 6 is driven to move by the electric drive wheel 15, so that the gas detector body 2 moves synchronously, which is convenient for walking to different detection and use positions inside the chemical filling workshop.

[0043] The outer wall of the sampling block 8 is in a circular array structure with multiple conical holes 17, and a suction groove 18 is provided inside the sampling block 8. The suction groove 18 is connected to the conical hole 17. The outer wall of the sampling block 8 is plugged into the piston rod of the multi-stage electric cylinder 7 in the middle, and the upper end of the piston rod of the multi-stage electric cylinder 7 in the middle is fixedly connected to the sampling block 8 by a second fastener 19; the telescopic tube 5 generates negative pressure, and the suction groove 18 generates negative pressure at this time to suck the air around the sampling block 8 through the conical hole 17, and transport it to the inside of the gas detector body 2 for detection.

[0044] A fixed block 21 is fixed inside the air intake pipe 3, and a servo motor 22 is installed on the fixed block 21 through a front end mounting seat. The output shaft of the servo motor 22 is rotatably connected to the fixed block 21, and a suction fan blade 23 is sleeved on the output shaft of the servo motor 22; the suction fan blade 23 is driven to rotate by the output shaft of the servo motor 22, so that the outer end of the air intake pipe 3 is sucked, so that the telescopic tube 5 connected thereto generates negative pressure.

[0045] Working principle: First, install the gas detector body 2 on the base 1. The base 1 is convenient for installing the gas detector body 2 in a suitable position for use, and it is convenient to install it on the wall or the top of the chemical filling workshop. When patrol monitoring is required in the chemical filling workshop, the gas detector body 2 can be installed on the mobile seat 6 through the base 1. At the same time, the height of the sampling round block 8 is adjusted by the multi-stage electric cylinder 7. The two ends of the telescopic tube 5 are connected to the air inlet pipe 3 and the sampling round block 8 through the connecting component 16. The sampling round block 8 transports gases at different heights to the inner wall of the gas detector body 2 through the telescopic tube 5 and the air inlet pipe 3;

[0046] The sampling round block 8 is convenient for detecting gases at different heights inside the chemical filling workshop. Once the concentration of harmful gases detected exceeds the preset safety threshold, the sound and light alarm 20 on the top surface of the gas detector body 2 will be immediately activated to send out sound and light alarm signals to remind the operator to take timely measures to deal with it, thereby improving the monitoring flexibility and convenience of the gas detector body 2. The device covers different height areas inside the chemical filling workshop to ensure that the monitoring of harmful gases is complete and without omissions;

[0047] When the gas detector body 2 is installed on the wall or the top of the chemical filling workshop, after the gas detector body 2 is installed on the top surface of the base 1, the installation can be completed by installing the corner block 9 and the mounting hole 10. When the gas detector body 2 needs to be moved for use, the base 1 is plugged into the T-block 13 through the T-slot 11. At this time, the connecting block 12 is plugged into the T-block 13, and the base 1 is fixed by the first fastener 14 and the T-block 13 threaded connection. After the fixation is completed, the mobile seat 6 is driven to move by the electric drive wheel 15, so that the gas detector body 2 moves synchronously, which is convenient for walking to different detection and use positions inside the chemical filling workshop. At the same time, the sampling round block 8 is pushed to move to different heights for sampling through the multi-stage electric cylinder 7, ensuring the accuracy and comprehensiveness of the monitoring results, and reducing the difficulty and cost of use;

[0048] When detecting harmful gases, after completing the installation and connection of the telescopic tube 5 and the sampling puck 8 through the connecting assembly 16, the suction fan blades 23 are driven to rotate through the output shaft of the servo motor 22 to suck the outer end of the air inlet pipe 3, so that the telescopic tube 5 connected thereto generates a negative pressure. At this time, the suction groove 18 generates a negative pressure to suck the air around the sampling puck 8 through the conical hole 17, and transports it to the inside of the gas detector body 2 for detection. The gas detector body 2 will analyze the concentration of the harmful gas and determine whether to issue an alarm signal based on a preset safety threshold. After the detection is completed, the gas can be discharged to the outside through the exhaust pipe 401, which improves work efficiency, ensures that harmful gases are discovered and handled in time, and reduces safety hazards.

[0049] Embodiment 2

[0050] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, this embodiment is based on the previous embodiment, and is different from the previous embodiment in that the connecting assembly 16 includes a cylinder 1601, which is fixed on the outer peripheral wall of the lower end of the telescopic tube 5. The cylinder 1601 is symmetrically structured and has two cylinders. Two sealing rings 1602 are installed on the outer peripheral wall of the lower end of the telescopic tube 5. The lower end of the telescopic tube 5 is plugged and matched with the intake pipe 3. An elastic rubber ring 1603 is fixed on the side wall of the telescopic tube 5 close to the intake pipe 3. The elastic rubber ring 1603 abuts against the inside of the intake pipe 3. Two sealing rings 1602 are opened on the outer peripheral wall of one side of the intake pipe 3 close to the telescopic tube 5. The two waist holes 1604 are symmetrical in structure. The waist holes 1604 are connected with arc-shaped opening grooves 1605. The arc-shaped opening grooves 1605 are centrally symmetrical in structure. The outer peripheral wall of the cylinder 1601 is slidingly connected with the waist holes 1604 and the arc-shaped opening grooves 1605 respectively; the cylinder 1601 moves along the arc-shaped opening grooves 1605 to the inside of the waist holes 1604, and the movement of the telescopic tube 5 drives the sealing ring 1602 and the elastic rubber ring 1603 to move synchronously. After the plug-in is completed, the outer peripheral wall of the sealing ring 1602 abuts against the inner wall of the intake pipe 3 to form an effective seal.

[0051] When connecting, insert one end of the telescopic tube 5 into the air intake pipe 3, so that the cylinder 1601 moves along the arc-shaped opening groove 1605 to the inside of the waist hole 1604. When the telescopic tube 5 moves, the sealing ring 1602 and the elastic rubber ring 1603 move synchronously. After the plug-in is completed, the outer peripheral wall of the sealing ring 1602 abuts against the inner wall of the air intake pipe 3 to form an effective seal.

[0052] At this time, the elastic rubber ring 1603 is compressed, and after the cylinder 1601 is moved to the side of the waist hole 1604 close to the gas detector body 2, the telescopic tube 5 is loosened and the elastic potential energy of the elastic rubber ring 1603 pushes the telescopic tube 5 to move to the side away from the air inlet pipe 3. At this time, the cylinder 1601 approaches one side of the telescopic tube 5 along the waist hole 1604, completing the installation of the telescopic tube 5, adapting to the use of the gas detector body 2 installed in different positions, simplifying the installation and disassembly process of the telescopic tube 5, improving work efficiency, ensuring that the gas detector body 2 accurately detects the gas concentration, and improving the accuracy of the detection results.

[0053] Embodiment 3

[0054] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, this embodiment is based on the previous embodiment, and differs from the previous embodiment in that the exhaust component 4 includes a protective net 402, and two protective nets 402 are provided. The two protective nets 402 are respectively installed inside the exhaust pipe 401; the adsorption material corresponding to the harmful gas is filled between the two protective nets 402 of the exhaust pipe 401.

[0055] A sealing flap 403 is rotatably connected to the outside of the exhaust pipe 401, a handle 404 is fixedly provided on the middle of the outer wall of the sealing flap 403, a positioning column 405 is fixedly provided on the upper end of the sealing flap 403, and two elastic members 406 are fixedly provided on the outer wall of the exhaust pipe 401 in a symmetrical structure, an arc-shaped clamping block 407 is provided on the elastic member 406, and the inner concave part of the arc-shaped clamping block 407 is clamped with the outer peripheral wall of the positioning column 405; pulling the handle 404 drives the sealing flap 403 to rotate, so that the positioning column 405 is separated from the arc-shaped clamping block 407 of the elastic member 406, which facilitates the opening and closing of the sealing flap 403 and the replacement of the adsorption material.

[0056] Before discharging the detected gas, pull the handle 404 to drive the sealing flap 403 to rotate, separate the positioning column 405 from the arc-shaped block 407 of the elastic member 406, and fill the corresponding adsorption material of the harmful gas (such as activated carbon) between the two protective nets 402 of the exhaust pipe 401, and then rotate the sealing flap 403 in the opposite direction to engage the positioning column 405 with the arc-shaped block 407, and the sealing flap 403 returns to the initial sealing state. The gas detected by the gas detector body 2 is adsorbed by the adsorption material and discharged to the outside through the upper end of the exhaust pipe 401, so as to facilitate the adsorption of the detected gas and effectively remove the harmful gas components, thereby ensuring the continuity and stability of the gas treatment process and improving the safety and environmental protection of the exhaust gas.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A harmful gas detection and alarm device for a chemical filling workshop, comprising a base (1), characterized in that: A gas detector body (2) is mounted on the top surface of the base (1); an air inlet end of the gas detector body (2) is connected to an air inlet pipe (3); the other side of the gas detector body (2) is connected to an exhaust assembly (4); an exhaust pipe (401) is provided on the exhaust assembly (4); the exhaust pipe (401) is connected to the air outlet end of the gas detector body (2); a telescopic tube (5) is connected to the air inlet pipe (3) via a connecting assembly (16); a movable seat (6) is provided on the bottom surface of the base (1); a multi-stage electric cylinder (7) is mounted on the top surface of the movable seat (6) via a mounting seat; a sampling round block (8) is mounted on the piston rod of the multi-stage electric cylinder (7); the upper end of the telescopic tube (5) is connected to the inside of the sampling round block (8); and an acoustic and optical alarm (20) is mounted on the top surface of the gas detector body (2).

2. The harmful gas detection and alarm device for a chemical filling workshop as claimed in claim 1, characterized in that: The four corners of the bottom surface of the base (1) are respectively provided with mounting corner blocks (9), the mounting corner blocks (9) are provided with mounting holes (10), the bottom surface of the base (1) is symmetrically structured with two T-shaped grooves (11), and the side wall of the base (1) is symmetrically structured with two connection blocks (12) fixedly provided.

3. The harmful gas detection and alarm device for a chemical filling workshop as claimed in claim 2, characterized in that: The top surface of the movable seat (6) is symmetrically structured and fixed with two T-shaped blocks (13); the base (1) is plugged and matched with the T-shaped blocks (13) through a T-shaped groove (11); the connecting block (12) is snap-connected with the T-shaped block (13); a first fastener (14) is plugged into the top surface of the T-shaped block (13); the upper end of the T-shaped block (13) is threadedly connected to the threaded end of the first fastener (14) through a threaded hole; and electric drive wheels (15) are respectively installed at the four corners of the movable seat (6).

4. The harmful gas detection and alarm device for a chemical filling workshop as claimed in claim 1, characterized in that: The outer wall of the sampling round block (8) is provided with a plurality of conical holes (17) in a ring array structure, and a suction groove (18) is provided inside the sampling round block (8). The suction groove (18) is communicated with the conical hole (17). The outer wall of the sampling round block (8) is plug-fitted with a piston rod located in the middle of the multi-stage electric cylinder (7), and the upper end of the piston rod located in the middle of the multi-stage electric cylinder (7) is fixedly connected to the sampling round block (8) via a second fastener (19).

5. The harmful gas detection and alarm device for a chemical filling workshop as claimed in claim 1, characterized in that: The connecting assembly (16) comprises a cylinder (1601), the cylinder (1601) being fixedly mounted on the outer peripheral wall of the lower end of the telescopic tube (5), the cylinder (1601) being symmetrically mounted with two cylinders, the outer peripheral wall of the lower end of the telescopic tube (5) being mounted with two sealing rings (1602), the lower end of the telescopic tube (5) being plugged into and matched with the air intake pipe (3), an elastic rubber ring (1603) being fixedly mounted on the side wall of the telescopic tube (5) close to the air intake pipe (3), the elastic rubber ring (1603) being in contact with the inside of the air intake pipe (3).

6. The harmful gas detection and alarm device for a chemical filling workshop as claimed in claim 5, characterized in that: Two waist holes (1604) are provided on the outer peripheral wall of one side of the air inlet pipe (3) close to the telescopic tube (5), the two waist holes (1604) are symmetrical in structure, the waist holes (1604) are connected with arc-shaped opening grooves (1605), the arc-shaped opening grooves (1605) are centrally symmetrical in structure, and the outer peripheral wall of the cylinder (1601) is slidably connected with the waist holes (1604) and the arc-shaped opening grooves (1605) respectively.

7. The harmful gas detection and alarm device for a chemical filling workshop as claimed in claim 1, characterized in that: A fixed block (21) is fixedly arranged inside the air intake pipe (3), a servo motor (22) is mounted on the fixed block (21) via a front end mounting seat, an output shaft of the servo motor (22) is rotatably connected to the fixed block (21), and a suction fan blade (23) is sleeved on the output shaft of the servo motor (22).

8. The harmful gas detection and alarm device for a chemical filling workshop as claimed in claim 1, characterized in that: The exhaust assembly (4) comprises a protective net (402), two of the protective nets (402) are provided, and the two protective nets (402) are respectively installed inside the exhaust pipe (401).

9. The harmful gas detection and alarm device for a chemical filling workshop as claimed in claim 8, characterized in that: A sealing flap (403) is rotatably connected to the outside of the exhaust pipe (401), a handle (404) is fixedly provided at the middle of the outer wall of the sealing flap (403), and a positioning column (405) is fixedly provided at the upper end of the sealing flap (403).

10. The harmful gas detection and alarm device for a chemical filling workshop as claimed in claim 9, characterized in that: Two elastic members (406) are fixedly provided on the outer wall of the exhaust pipe (401) in a symmetrical structure. An arc-shaped clamping block (407) is provided on the elastic member (406). The inner concave part of the arc-shaped clamping block (407) is clamped and matched with the outer peripheral wall of the positioning column (405).

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