Explosion-proof gas analyzer

Abstract

The utility model discloses an explosion-proof gas analyzer, which relates to the field of gas analyzers and comprises a shell and a heat insulation layer, a partition plate is arranged in the shell, an air pump is mounted at the top of the partition plate, an air inlet end of the air pump is connected with an exhaust pipe extending to the outside of the shell, and an anti-blocking component is arranged at the top of the shell. Through the arrangement of the anti-blocking assembly, when the pressure of the detection cylinder needs to be relieved, the electromagnetic valve is opened, gas in the detection cylinder quickly enters the pressure relief pipe and is discharged through the pressure relief pipe, and the fan blades rotate after being impacted by airflow, drive the rotating shaft to rotate and then drive the driven gear to rotate, so that the detection cylinder is prevented from being blocked. When the driven gear rotates, the rotating ring can be driven to rotate, then the scraping plate is driven to rotate, when the scraping plate rotates, dust or impurities attached to the surface of the filter screen can be scraped off, the situation that the air inlet efficiency is affected due to the fact that the filter screen is blocked is avoided, workers do not need to clean the filter screen at set intervals, and then the cleaning efficiency of the filter screen is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of gas analyzer, concretely is a kind of explosion-proof gas analyzer. BACKGROUND

[0002] Gas detection instrument is a kind of gas leakage concentration detection instrument, mainly using gas sensor to detect the gas species existing in environment, and the gas sensor is used to detect the composition and content of gas.

[0003] The existing gas analyzer, will install filter screen at the end of air inlet, to filter the air entering, prevent impurities from entering into gas analyzer and causing damage to internal components, and after filter screen continuously filters air, its surface will be attached with more dust or impurities, to avoid dust or impurities from blocking filter screen and affecting air intake efficiency, staff need to clean the impurities or dust attached to the surface of filter screen every time interval, to increase the workload of staff, and it is more troublesome, to affect the cleaning effect of filter screen. SUMMARY

[0004] Therefore, the utility model discloses a kind of explosion-proof gas analyzer, to solve the technical problem that staff manually clean filter screen is more troublesome.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of explosion-proof gas analyzer, including shell and heat insulation layer, the inside of shell is equipped with baffle, the top of baffle is installed with gas pump, and the gas inlet end of gas pump is connected with suction tube extending to the outside of shell, the top of shell is equipped with anti-blocking component, and anti-blocking component includes rotating shaft installed on baffle by sealing bearing and the sliding slot opened in the top of shell, the inside of sliding slot is provided with multiple sliding blocks, and the top of sliding block is equipped with driven gear, the inner wall of driven gear is installed with rotating ring, and the top one side of rotating ring is installed with mounting plate by bolt, the top one side of mounting plate is equipped with scraper, the bottom end of rotating shaft is installed with fan blade, the top end of rotating shaft penetrates to the outside of shell and is connected with driving gear.

[0006] By adopting the above technical scheme, when driven gear rotates, it will drive rotating ring to rotate, and rotating ring drives scraper to rotate, and simultaneously drives sliding block to slide in sliding slot, to improve the stability when driven gear rotates.

[0007] Further, the outer wall of suction tube is provided with multiple air inlets above, and the air inlet is installed with filter screen.

[0008] By adopting the above technical scheme, external gas can enter into suction tube through air inlet, and filter screen can filter impurities or dust, to prevent impurities from entering into gas pump.

[0009] Further, a detection cylinder is mounted below the inside of the shell by bolts, a gas detection sensor is mounted below the inside of the detection cylinder, and an air pressure sensor is mounted on one side of the inside of the detection cylinder.

[0010] By adopting the above technical scheme, after the gas enters the detection cylinder, the gas detection sensor detects the gas, and the air pressure sensor can detect the air pressure in the detection cylinder.

[0011] Further, a pressure relief pipe is connected below one side of the detection cylinder, and an electromagnetic valve is mounted on the pressure relief pipe.

[0012] By adopting the above technical scheme, when the electromagnetic valve is opened, the gas in the detection cylinder will quickly flow into the inside of the pressure relief pipe and be discharged through the pressure relief pipe for pressure relief.

[0013] Further, a sealing cover is mounted on the bottom of the baffle, and a gas conveying pipe is connected between the sealing cover and the air outlet end of the air pump.

[0014] By adopting the above technical scheme, the air pump can extract external gas, and the external gas can enter the detection cylinder through the gas conveying pipe.

[0015] Further, a sealing ring is mounted on the top end of the detection cylinder, and the top of the sealing ring is attached to the bottom of the sealing cover.

[0016] By adopting the above technical scheme, the sealing ring can improve the sealing between the sealing cover and the detection cylinder, preventing gas from flowing out through the gap between the sealing cover and the detection cylinder.

[0017] Further, a reinforcing layer is arranged between the shell and the heat insulation layer, and the reinforcing layer is made of high-strength wire mesh material.

[0018] By adopting the above technical scheme, the stainless steel shell and the high-strength wire mesh can greatly improve the strength of the entire instrument shell, and can achieve the effect of explosion-proof.

[0019] Further, a cover plate is mounted on the outer surface of the shell by bolts, and an operation panel is mounted on the cover plate.

[0020] By adopting the above technical scheme, the cover plate can be mounted on the shell by bolts, and the operation panel can display data information.

[0021] Further, the driving gear is engaged with the driven gear, and the diameter of the driving gear is smaller than the diameter of the driven gear.

[0022] By adopting the above technical scheme, when the driving gear rotates, it will drive the driven gear to rotate, and the driven gear will drive the rotating ring to rotate.

[0023] Further, one side of the scraper is attached to the outer wall of the air extraction pipe, and the height of the scraper is greater than the diameter of the air inlet hole.

[0024] By adopting the above technical scheme, the scraper can scrape off dust or impurities attached to the surface of the filter screen when rotating, thereby avoiding filter screen blockage and affecting air inlet efficiency.

[0025] In summary, the utility model mainly has the following beneficial effects:

[0026] 1. The utility model discloses a prevent blocking assembly, when the detection cylinder needs to be pressure released, the electromagnetic valve will open, at this time, the gas in the detection cylinder enters the pressure relief pipe quickly and is discharged through the pressure relief pipe, the fan blade will rotate after being impacted by the airflow, drives the rotating shaft to rotate, and drives the driven gear to rotate, the driven gear will drive the rotating ring to rotate when rotating, then drives the scraper to rotate, the scraper can scrape off dust or impurities attached to the surface of the filter screen when rotating, thereby avoiding filter screen blockage and affecting air inlet efficiency, so that the staff does not need to clean the filter screen every period of time, thereby improving the cleaning efficiency of the filter screen, and since the electromagnetic valve is closed when the gas pressure in the detection cylinder is normal, the fan blade will not rotate at this time, so the scraper will not rotate, therefore the scraper rotates intermittently and cleans the surface of the filter screen intermittently.

[0027] 2. The utility model discloses a mounting plate, when the scraper needs to be replaced due to serious wear, the bolt on the mounting plate can be unscrewed, then the mounting plate and the scraper are taken out, and the scraper can be disassembled and replaced.

[0028] 3. The utility model discloses a sliding block and a sliding groove, when the driven gear rotates, the sliding block will slide in the sliding groove, thereby improving the stability of the driven gear when rotating. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the whole three-dimensional structure schematic diagram of the utility model;

[0030] Figure 2 It is the air pump structure schematic diagram of the utility model;

[0031] Figure 3 It is the whole right section structure schematic diagram of the utility model;

[0032] Figure 4 It is the shell overhead structure schematic diagram of the utility model;

[0033] Figure 5 It is the driven gear bottom structure schematic diagram of the utility model;

[0034] Figure 6 It is the fan blade structure schematic diagram of the utility model;

[0035] Figure 7 For the present utility model Figure 3 A magnified structural diagram of point A in the middle.

[0036] In the diagram: 1. Housing; 2. Reinforcing layer; 3. Insulation layer; 4. Cover plate; 5. Operation panel; 6. Partition plate; 7. Controller; 8. Detection cylinder; 9. Anti-clogging component; 901. Fan blade; 902. Rotating shaft; 903. Driving gear; 904. Driven gear; 905. Slide groove; 906. Slider; 907. Rotating ring; 908. Mounting plate; 909. Scraper; 10. Gas detection sensor; 11. Air pressure sensor; 12. Pressure relief pipe; 13. Solenoid valve; 14. Exhaust port; 15. Air pump; 16. Sealing cover; 17. Gas supply pipe; 18. Sealing ring; 19. Filter screen; 20. Air inlet; 21. Suction pipe. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] The embodiments of this utility model will be described below based on its overall structure.

[0039] Example 1:

[0040] An explosion-proof gas analyzer, such as Figures 1-7 As shown, the device includes a housing 1 and a heat insulation layer 3. The housing 1 has a partition 6 inside, and an air pump 15 is installed on the top of the partition 6. The air pump 15 is connected to an air extraction pipe 21 extending to the outside of the housing 1. Multiple air inlets 20 are opened on the upper part of the outer wall of the air extraction pipe 21. A filter screen 19 is installed in the air inlet 20. External air can enter the air extraction pipe 21 through the air inlet 20, while the filter screen 19 can filter impurities or dust to prevent impurities from entering the air pump 15. The top of the housing 1 is provided with an anti-clogging component 9.

[0041] See Figures 1-5The inside of the shell 1 is bolted with a detection cylinder 8, the inside of the detection cylinder 8 is bolted with a gas detection sensor 10, one side of the inside of the detection cylinder 8 is bolted with an air pressure sensor 11, after the gas enters the detection cylinder 8, the gas detection sensor 10 detects the gas, and the air pressure sensor 11 can detect the air pressure in the detection cylinder 8, one side of the detection cylinder 8 is connected with a pressure relief pipe 12, and the pressure relief pipe 12 is bolted with a solenoid valve 13, the inside of the shell 1 is bolted with a controller 7, the controller 7 is electrically connected with the gas detection sensor 10, the air pressure sensor 11 and the solenoid valve 13 respectively, when the solenoid valve 13 is opened, the gas in the detection cylinder 8 will flow into the inside of the pressure relief pipe 12 quickly, and is discharged through the pressure relief pipe 12 to relieve pressure, the bottom of the partition plate 6 is bolted with a sealing cover 16, the sealing cover 16 is connected with a gas conveying pipe 17 between the gas outlet end of the air pump 15, the air pump 15 can extract external gas, and the external gas can enter the detection cylinder 8 through the gas conveying pipe 17, the outer surface of the shell 1 is bolted with a cover plate 4, the cover plate 4 is bolted with an operation panel 5, the operation panel 5 is electrically connected with the controller 7 and the air pump 15 respectively, the cover plate 4 can be bolted on the shell 1, and the operation panel 5 can display data information.

[0042] Specifically, the anti-blocking assembly 9 comprises a rotating shaft 902 mounted on the partition plate 6 through a sealing bearing and a sliding groove 905 opened at the top of the shell 1, a sealing ring is arranged between the rotating shaft 902 and the heat insulation layer 3, a plurality of sliding blocks 906 are arranged in the sliding groove 905, a driven gear 904 is arranged at the top of the sliding block 906, a rotating ring 907 is mounted on the inner wall of the driven gear 904, a mounting plate 908 is bolted on one side of the top of the rotating ring 907, a scraper 909 is arranged on one side of the top of the mounting plate 908, a fan blade 901 is mounted at the bottom end of the rotating shaft 902, the top end of the rotating shaft 902 penetrates to the outside of the shell 1 and is connected with a driving gear 903, when the driven gear 904 rotates, it drives the rotating ring 907 to rotate, and the rotating ring 907 drives the scraper 909 to rotate, the sliding groove 905 is annular, the sliding block 906 is slidingly connected with the sliding groove 905, and the driven gear 904 drives the sliding block 906 to slide in the sliding groove 905, so as to improve the stability when the driven gear 904 rotates, and the fan blade 901 is located above the pressure relief pipe 12, so that the fan blade 901 rotates when it is impacted by the airflow.

[0043] Referring to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7The driving gear 903 is engaged with the driven gear 904, the diameter of the driving gear 903 is smaller than that of the driven gear 904, when the driving gear 903 rotates, it drives the driven gear 904 to rotate, the driven gear 904 drives the rotating ring 907 to rotate, one side of the scraper 909 is attached to the outer wall of the air suction pipe 21, the height of the scraper 909 is greater than the diameter of the air inlet hole 20, so that the scraper 909 can scrape off the dust or impurities attached to the surface of the filter screen 19 when rotating, avoiding the filter screen 19 from being blocked and affecting the air inlet efficiency, the scraper 909 is detachably connected with the rotating ring 907 through the mounting plate 908, facilitating the disassembly and assembly of the scraper 909.

[0044] Embodiment two:

[0045] On the basis of the above-mentioned embodiment one, in order to improve the sealing property between the sealing cover 16 and the detection cylinder 8, the following structure is arranged.

[0046] Specifically, the top end of the detection cylinder 8 is provided with a sealing ring 18, the top of the sealing ring 18 is attached to the bottom of the sealing cover 16, the arrangement of the sealing ring 18 can improve the sealing property between the sealing cover 16 and the detection cylinder 8, preventing the gas from flowing out through the gap between the sealing cover 16 and the detection cylinder 8.

[0047] Embodiment three:

[0048] On the basis of the above-mentioned embodiment one, in order to improve the strength of the analyzer shell and enable it to play an anti-explosion effect, the following structure is arranged.

[0049] Referring to Figures 1-3 The shell 1 and the heat insulation layer 3 are provided with a reinforcing layer 2, the shell 1 and the cover plate 4 are both made of stainless steel material, and the reinforcing layer 2 is made of high-strength wire mesh material, so that the arrangement of the stainless steel shell and the high-strength wire mesh can greatly improve the strength of the whole instrument shell and play an anti-explosion effect.

[0050] The working principle of the utility model is as follows: firstly, the power supply can be connected before the device is used, the air pump 15, the gas detection sensor 10 and the air pressure sensor 11 are started when used, the air pump 15 can extract external gas, the external gas enters into the air suction pipe 21 through the air inlet hole 20, the filter screen 19 can preliminarily filter the air to prevent impurities from entering into the air suction pipe 21, the gas enters into the inside of the detection cylinder 8 through the gas conveying pipe 17, the gas detection sensor 10 detects the gas, and the air pressure sensor 11 can detect the air pressure in the inside of the detection cylinder 8, when the air pressure in the inside of the detection cylinder 8 is too large, the air pressure sensor 11 transmits a signal to the controller 7, the controller 7 opens the electromagnetic valve 13 after receiving the signal, at this moment, the gas in the inside of the detection cylinder 8 is discharged through the pressure relief pipe 12, thereby achieving the pressure relief effect and preventing the explosion caused by the air pressure in the inside of the detection cylinder 8 being too large.

[0051] When the gas is rapidly discharged through the pressure relief pipe 12, the fan blade 901 is impacted by the airflow and rotates, and drives the rotating shaft 902 to rotate, and then drives the driven gear 904 to rotate, and the driven gear 904 drives the rotating ring 907 to rotate, and then drives the scraper 909 to rotate, and the scraper 909 can scrape off the dust or impurities attached to the surface of the filter screen 19, so as to avoid the filter screen 19 from being blocked and affecting the air intake efficiency, and when the air pressure in the detection cylinder 8 is normal, the electromagnetic valve 13 is closed, at this time the fan blade 901 does not rotate, so the scraper 909 also does not rotate, therefore the scraper 909 is intermittently rotated and intermittently cleans the surface of the filter screen 19;

[0052] When the scraper 909 needs to be replaced due to serious wear, the bolts on the mounting plate 908 are unscrewed, and then the mounting plate 908 and the scraper 909 are taken out, so that the scraper 909 can be disassembled and replaced.

[0053] Although the embodiments of the utility model have been shown and described, the specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and the person skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification without departing from the principles and purposes of the utility model, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. An explosion-proof gas analyzer comprising a housing (1) and a thermal insulation layer (3), characterized in that: The inside of the shell (1) is provided with a partition (6), the top of the partition (6) is provided with an air pump (15), and the air inlet end of the air pump (15) is connected with an air exhaust pipe (21) extending to the outside of the shell (1), the top of the shell (1) is provided with an anti-blocking assembly (9), and the anti-blocking assembly (9) comprises a rotating shaft (902) mounted on the partition (6) through a sealing bearing and a chute (905) opened in the top of the shell (1), a plurality of sliding blocks (906) are arranged in the inside of the chute (905), and a driven gear (904) is arranged on the top of the sliding block (906), a rotating ring (907) is mounted on the inner wall of the driven gear (904), and a mounting plate (908) is mounted on the top of one side of the rotating ring (907) through bolts, a scraper (909) is arranged on the top of one side of the mounting plate (908), and a fan blade (901) is mounted on the bottom end of the rotating shaft (902), and the top end of the rotating shaft (902) penetrates to the outside of the shell (1) and is connected with a driving gear (903).

2. A flameproof gas analyzer according to claim 1, characterized in that: A plurality of air inlet holes (20) are formed in the outer wall of the air exhaust pipe (21), and a filter screen (19) is mounted in the air inlet hole (20).

3. The explosion-proof gas analyzer of claim 1, wherein: A detection cylinder (8) is mounted in the inside of the shell (1) through bolts, a gas detection sensor (10) is mounted in the inside of the detection cylinder (8), and a gas pressure sensor (11) is mounted on one side of the inside of the detection cylinder (8).

4. A flameproof gas analyzer according to claim 3, characterized in that: A pressure relief pipe (12) is connected to the side of the detection cylinder (8), and an electromagnetic valve (13) is mounted on the pressure relief pipe (12).

5. An intrinsically safe gas analyzer according to claim 3, wherein: A sealing cover (16) is mounted on the bottom of the partition (6), and a gas conveying pipe (17) is connected between the sealing cover (16) and the air outlet end of the air pump (15).

6. An intrinsically safe gas analyzer according to claim 5, characterized in that: A sealing ring (18) is mounted on the top end of the detection cylinder (8), and the top of the sealing ring (18) is attached to the bottom of the sealing cover (16).

7. The explosion-proof gas analyzer of claim 1, wherein: A reinforcing layer (2) is arranged between the shell (1) and the heat insulation layer (3), and the reinforcing layer (2) is made of high-strength wire mesh material.

8. The explosion-proof gas analyzer of claim 1, wherein: A cover plate (4) is mounted on the outer surface of the shell (1) through bolts, and an operation panel (5) is mounted on the cover plate (4).

9. The explosion-proof gas analyzer of claim 1, wherein: The driving gear (903) is engaged with the driven gear (904), and the diameter of the driving gear (903) is smaller than the diameter of the driven gear (904).

10. The explosion-proof gas analyzer of claim 1, wherein: One side of the scraper (909) is attached to the outer wall of the air exhaust pipe (21), and the height of the scraper (909) is greater than the diameter of the air inlet hole (20).

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