CN114299695A

CN114299695A - Toxic and combustible gas alarm device

Info

Publication number: CN114299695A
Application number: CN202111528744.7A
Authority: CN
Inventors: 刘新潮; 刘永升
Original assignee: Shenzhen Ziyuan Industrial Technology Co ltd
Current assignee: Shenzhen Ziyuan Industrial Technology Co ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-04-08

Abstract

The invention discloses a toxic and combustible gas alarm device which comprises a detection box, a toxic gas detection sensor, a combustible gas detection sensor, a mounting seat, an air outlet pipe, an air inlet dustproof mechanism and an installation fixing mechanism, wherein the inner wall of the detection box is fixedly connected with the toxic gas detection sensor and the combustible gas detection sensor, the top of the detection box is fixedly connected with the mounting seat, the side wall of the detection box is fixedly connected with the air outlet pipe, an exhaust fan is arranged in the air outlet pipe, the bottom of the detection box is fixedly connected with the air inlet pipe, the air inlet dustproof mechanism is arranged in the air inlet pipe, the installation fixing mechanism is arranged in the detection box, and a sponge fiber net and an active carbon filter screen are placed on the installation fixing mechanism. The invention relates to a toxic and combustible gas alarm device which has the characteristics of good dustproof effect and convenience in replacement of a sponge fiber net and an activated carbon filter screen.

Description

Toxic and combustible gas alarm device

Technical Field

The invention belongs to the technical field of alarm devices, and particularly relates to a toxic and combustible gas alarm device.

Background

The toxic combustible gas detector is a gas detector, can be used for detecting the content of gases such as carbon monoxide, hydrogen sulfide, hydrogen and the like in the surrounding atmosphere, adopts an industrial grade high-reliability electrochemical or infrared sensor, has the characteristics of high stability and no need of maintenance, and reflects the high technical development level. Patent application publication No. CN213582513U provides an alarm with multiple poisonous or combustible substance detection mechanism, through setting up filter mechanism, makes the device not only detect poisonous or combustible substance gas, also can purify the indoor gas that has detected, improves operational environment quality. However, there are still some drawbacks in the prior art: 1. the toxic gas detection sensor and the combustible gas detection sensor for gas detection are arranged at the air inlet, and when on-site gas enters the device from the air inlet due to negative pressure, impurities such as dust in the gas are easily accumulated on the toxic gas detection sensor and the combustible gas detection sensor, so that the sensitivity of the toxic gas detection sensor and the combustible gas detection sensor is possibly reduced for a long time; 2. the installation and the replacement of the sponge fiber net and the activated carbon filter screen for purifying air are inconvenient. Therefore, a toxic and combustible gas alarm device needs to be designed.

The invention content is as follows:

the present invention is directed to provide a toxic and flammable gas alarm device to solve the above problems, and to solve the problems mentioned in the background art.

In order to solve the above problems, the present invention provides a technical solution:

the utility model provides a poisonous, combustible gas alarm device, includes detection case, poisonous gas detection sensor, combustible gas detection sensor, mount pad, outlet duct, intake pipe, the dustproof mechanism that admits air and installation fixed establishment, the inner wall fixedly connected with poisonous gas detection sensor and the combustible gas detection sensor of detection case, the top fixedly connected with mount pad of detection case, the lateral wall fixedly connected with outlet duct of detection case, be provided with the air discharge fan in the outlet duct, the bottom fixedly connected with intake pipe of detection case, be provided with the dustproof mechanism that admits air in the intake pipe, be provided with installation fixed establishment in the detection case, sponge fibre web and active carbon filter screen have been placed on the installation fixed establishment, sponge fibre web and active carbon filter screen contact each other.

Preferably, the number of the air outlet pipes is two, and the two air outlet pipes are symmetrically distributed on the detection box.

Preferably, the air outlet pipe is provided with a mesh enclosure which is made of stainless steel.

As preferred, dustproof mechanism admits air includes the support, changes cover, pivot, spacing ring, supports depression bar, fixed block, slide bar, crown plate, dust screen, inclined plane ring, stopper, first spring and flabellum, two supports of two symmetric distributions of fixedly connected with in the intake pipe, two common fixedly connected with changes the cover between the support, it is connected with the pivot to change the cover internal rotation, fixedly connected with flabellum in the pivot, fixedly connected with supports the depression bar in the pivot, it is the L type to support the depression bar.

Preferably, the rotating shaft is fixedly connected with two limiting rings, and a rotating sleeve is in contact with the two limiting rings together.

As preferred, the fixed block of two symmetric distributions of inner wall fixedly connected with of intake pipe, every sliding connection has the slide bar, two in the fixed block the common fixedly connected with crown plate in bottom of slide bar, fixedly connected with dust screen on the crown plate, the bottom fixedly connected with inclined plane ring of dust screen, the inclined plane ring with support the compression bar contact, fixedly connected with stopper on the slide bar, the stopper is stainless steel material, first spring has been cup jointed to the outside of slide bar, the one end fixedly connected with fixed block of first spring, the other end fixedly connected with crown plate of first spring, crown plate and intake pipe sliding connection.

Preferably, the mounting and fixing mechanism comprises a limit sleeve, a slot, a guide groove, a guide rod, a moving block, a first hinged arm, a second spring, a threaded cap and a pressing wheel, the limit sleeve is fixedly connected in the detection box, a sponge fiber net and an active carbon filter screen are placed in the limit sleeve, the slot is formed in the bottom of the limit sleeve, two guide grooves which are symmetrically distributed are formed in the inner wall of the detection box, the guide rod is fixedly connected in each guide groove, the moving block is sleeved outside the guide rod in a sliding manner and is in contact with the inner surface of the guide groove, the first hinged arm is hinged on the moving block, the second hinged arm is hinged on the inner surface of the detection box, the second hinged arm is hinged with the first hinged arm, the pressing wheel is fixedly connected on the second hinged arm and is in contact with the active carbon filter screen, the guide rod is connected with a threaded cap through threads, the threaded cap is in contact with the moving block, and a second spring is sleeved outside the guide rod.

Preferably, one end of the second spring is fixedly connected with a moving block, and the other end of the second spring is fixedly connected with the inner surface of the guide groove.

The invention has the beneficial effects that: the invention relates to a poisonous and combustible gas alarm device, which has the characteristics of good dustproof effect and convenient replacement of a sponge fiber net and an activated carbon filter screen, and compared with the prior art, the alarm device has the following two beneficial effects in specific use:

firstly, an air inlet dustproof mechanism is additionally arranged at an air inlet of the device, so that dust doped with gas is prevented from entering a detection box along with air flow, and then the dust is accumulated on a toxic gas detection sensor and a combustible gas detection sensor to cause the sensitivity of the toxic gas detection sensor and the combustible gas detection sensor to be reduced, and the normal use of the device is ensured;

secondly, through set up installation fixed establishment in the detection case, installation fixed establishment includes parts such as stop collar, fluting, guide way, guide arm, movable block, first articulated arm, second spring, screw cap, pinch roller, can carry out effectual support and fixed to being used for gaseous sponge fibre web and the active carbon filter screen that purifies, the change in the two later stage of also being convenient for simultaneously.

Description of the drawings:

for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.

FIG. 1 is a perspective view of the overall construction of the present invention;

FIG. 2 is a front cross-sectional view of FIG. 1 of the present invention;

FIG. 3 is an enlarged view of the portion A of FIG. 2 according to the present invention;

FIG. 4 is a bottom view of the ring plate of FIG. 2 of the present invention;

FIG. 5 is a top view of the stop collar of FIG. 2 of the present invention;

fig. 6 is a partial bottom view of the intake duct of fig. 1 according to the present invention.

In the figure: 1. a detection box; 2. a toxic gas detection sensor; 3. a combustible gas detection sensor; 4. A mounting seat; 5. an air outlet pipe; 51. an exhaust fan; 52. a mesh enclosure; 6. an air inlet pipe; 7. an air inlet dustproof mechanism; 71. a support; 72. rotating the sleeve; 73. a rotating shaft; 74. a limiting ring; 75. a pressing rod; 76. a fixed block; 77. a slide bar; 78. a ring plate; 79. a dust screen; 710. an inclined plane ring; 711. a limiting block; 712. a first spring; 713. a fan blade; 8. installing a fixing mechanism; 81. a limiting sleeve; 82. grooving; 83. a guide groove; 84. a guide bar; 85. a moving block; 86. a first hinge arm; 87. a second hinge arm; 88. a second spring; 89. a threaded cap; 810. a pinch roller; 9. a sponge web; 10. an active carbon filter screen.

The specific implementation mode is as follows:

as shown in fig. 1 to 6, the following technical solutions are adopted in the present embodiment:

example (b):

a poisonous and combustible gas alarm device comprises a detection box 1, a poisonous gas detection sensor 2, a combustible gas detection sensor 3, a mounting seat 4, an air outlet pipe 5, an air inlet pipe 6, an air inlet dustproof mechanism 7 and a mounting and fixing mechanism 8, the inner wall of the detection box 1 is fixedly connected with a toxic gas detection sensor 2 and a combustible gas detection sensor 3, the top of the detection box 1 is fixedly connected with a mounting seat 4, the side wall of the detection box 1 is fixedly connected with an air outlet pipe 5, an exhaust fan 51 is arranged in the air outlet pipe 5, an air inlet pipe 6 is fixedly connected at the bottom of the detection box 1, an air inlet dustproof mechanism 7 is arranged in the air inlet pipe 6, an installation fixing mechanism 8 is arranged in the detection box 1, sponge fiber net 9 and active carbon filter screen 10 have been placed on installation fixed establishment 8, sponge fiber net 9 and active carbon filter screen 10 contact each other. The sponge fiber net 9 and the activated carbon filter net 10 can purify the gas introduced into the detection box 1.

The number of the air outlet pipes 5 is two, and the two air outlet pipes 5 are symmetrically distributed on the detection box 1. Through the design of outlet duct 5, be convenient for the circulation of air in detection case 1.

The air outlet pipe 5 is provided with a mesh enclosure 52, and the mesh enclosure 52 is made of stainless steel. Through the design of the mesh enclosure 52, the exhaust fan 51 in the outlet duct 5 can be protected from dust when the device is idle.

Wherein, dustproof mechanism 7 admits air includes support 71, commentaries on classics cover 72, pivot 73, spacing ring 74, supports pressure bar 75, fixed block 76, slide bar 77, crown plate 78, dust screen 79, inclined plane ring 710, stopper 711, first spring 712 and flabellum 713, two symmetric distribution's of fixedly connected with support 71 in the intake pipe 6, two common fixedly connected with commentaries on classics cover 72 between the support 71, change the internal rotation of cover 72 and be connected with pivot 73, fixedly connected with flabellum 713 on the pivot 73, fixedly connected with supports pressure bar 75 on the pivot 73, it is the L type to support pressure bar 75. The rotation can be generated by the airflow by the design of the fan blades 713.

The rotating shaft 73 is fixedly connected with two limiting rings 74, and the two limiting rings 74 are in contact with the rotating sleeve 72. The stop ring 74 is designed to limit the rotation shaft 73.

Wherein, the fixed block 76 of two symmetric distributions of inner wall fixedly connected with of intake pipe 6, every sliding connection has slide bar 77, two in the fixed block 76 the common fixedly connected with crown plate 78 in bottom of slide bar 77, fixedly connected with dust screen 79 on the crown plate 78, the bottom fixedly connected with inclined plane ring 710 of dust screen 79, inclined plane ring 710 with support the contact of depression bar 75, fixedly connected with stopper 711 on the slide bar 77, stopper 711 is stainless steel material, first spring 712 has been cup jointed to the outside of slide bar 77, the one end fixedly connected with fixed block 76 of first spring 712, the other end fixedly connected with crown plate 78 of first spring 712, crown plate 78 and intake pipe 6 sliding connection. By virtue of the design of the first spring 712, a reaction force can be exerted back on the ring plate 78.

Wherein the mounting and fixing mechanism 8 comprises a limiting sleeve 81, a slot 82, a guide groove 83, a guide rod 84, a moving block 85, a first hinge arm 86, a second hinge arm 87, a second spring 88, a thread cap 89 and a pressing wheel 810, the limiting sleeve 81 is fixedly connected in the detection box 1, a sponge fiber net 9 and an activated carbon filter screen 10 are placed in the limiting sleeve 81, the slot 82 is formed at the bottom of the limiting sleeve 81, two guide grooves 83 are formed in the inner wall of the detection box 1, the guide rod 84 is fixedly connected in each guide groove 83, the moving block 85 is sleeved outside the guide rod 84 in a sliding manner, the moving block 85 is in contact with the inner surface of the guide groove 83, the first hinge arm 86 is hinged on the moving block 85, the second hinge arm 87 is hinged on the inner surface of the detection box 1, and the second hinge arm 87 is hinged with the first hinge arm 86, the second hinge arm 87 is fixedly connected with a pressing wheel 810, the pressing wheel 810 is in contact with the activated carbon filter screen 10, the guide rod 84 is connected with a threaded cap 89 through threads, the threaded cap 89 is in contact with the moving block 85, and the second spring 88 is sleeved outside the guide rod 84. Through the design of the pressing wheel 810, the sponge fiber net 9 and the activated carbon filter screen 10 can be pressed.

One end of the second spring 88 is fixedly connected with a moving block 85, and the other end of the second spring 88 is fixedly connected with the inner surface of the guide groove 83. By the design of the second spring 88, a spring back can be applied to the moving block 85.

The using state of the invention is as follows: when the device is used, when the device works, the exhaust fan 51 is started, negative pressure is generated in the detection box 1, outside air is forcibly sucked into the detection box 1 from the air inlet pipe 6, toxic or combustible substance gas is respectively detected by the toxic gas detection sensor 2 and the combustible gas detection sensor 3, when the outside air exceeds the standard, the outside air is fed back to a control panel outside the device, a signal is sent to an alarm to give an alarm, the detection result is more timely, the detection range is wide, and then, the detected indoor gas can be purified through the filtering and purification of the sponge fiber net 9 and the activated carbon filter screen 10, so that the quality of the working environment is improved;

when the outside air enters the detection box 1 through the air inlet pipe 6, the air is effectively filtered by the dust screen 79 in the air inlet dust-proof mechanism 7 to prevent the impurities such as dust and the like in the air from entering the detection box 1 along with the air flow, and then the impurities are accumulated on the toxic gas detection sensor 2 and the combustible gas detection sensor 3 to cause the sensitivity of the toxic gas detection sensor 2 and the combustible gas detection sensor 3 to be reduced, so that the normal use of the device is ensured, the air flow drives the fan blades 713 to rotate, the fan blades 713 drive the rotating shaft 73 to rotate, the rotating shaft 73 drives the abutting rod 75 to rotate, the abutting rod 75 slides on the surface of the inclined ring 710 on the dust screen 79, the dust screen 79 and the ring plate 78 are subjected to pressure by utilizing the characteristics of the inclined ring 710, the pressure acts on the first spring 712, and the reaction force of the first spring 712 acts back on the dust screen 79 and the ring plate 78, and the vibration is caused in such a reciprocating way, the dust screen 79 can filter impurities and prevent self blockage, so that smooth air inlet is ensured;

when the sponge fiber net 9 and the activated carbon filter screen 10 for purifying the gas need to be replaced in the later period, only the detection box 1 needs to be opened, then, the screw cap 89 in the mounting and fixing mechanism 8 is rotated, the screw cap 89 is moved upward by the screw motion between the screw cap 89 and the guide 84, at this time, the resilient force of the second spring 88 acts on the moving block 85, so that the moving block 85 is moved upward, and the moving block 85 drives one end of the first hinge arm 86 to move upwards, and the first hinge arm 86 and the second hinge arm 87 gradually become vertical, at this time, the pressing wheel 810 on the second hinge arm 87 is out of contact with the activated carbon filter screen 10, thereby releasing the restriction on the sponge fiber net 9 and the active carbon filter screen 10, and taking the two out of the limit sleeve 81 for replacement, and then the threaded cap 89 is reversely rotated, so that the pinch roller 810 can fix the two again, and the operation is simple and convenient.

While there have been shown and described what are at present considered to be the fundamental principles of the invention and its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a poisonous, combustible gas alarm device, includes detection case (1), poisonous gas detection sensor (2), combustible gas detection sensor (3), mount pad (4), outlet duct (5), intake pipe (6), admit air dustproof mechanism (7) and installation fixed establishment (8), its characterized in that: the inner wall fixedly connected with toxic gas detection sensor (2) and combustible gas detection sensor (3) of detection case (1), the top fixedly connected with mount pad (4) of detection case (1), the lateral wall fixedly connected with outlet duct (5) of detection case (1), be provided with air discharge fan (51) in outlet duct (5), the bottom fixedly connected with intake pipe (6) of detection case (1), be provided with dust guard mechanism (7) that admits air in intake pipe (6), be provided with installation fixed establishment (8) in detection case (1), sponge fibre net (9) and active carbon filter screen (10) have been placed on installation fixed establishment (8), sponge fibre net (9) and active carbon filter screen (10) contact each other.

2. The toxic, flammable gas warning device of claim 1, wherein: the number of the air outlet pipes (5) is two, and the two air outlet pipes (5) are symmetrically distributed on the detection box (1).

3. The toxic, flammable gas warning device of claim 1, wherein: a mesh enclosure (52) is arranged on the air outlet pipe (5), and the mesh enclosure (52) is made of stainless steel.

4. The toxic, flammable gas warning device of claim 1, wherein: admit air dustproof mechanism (7) including support (71), commentaries on classics cover (72), pivot (73), spacing ring (74), support pressure pole (75), fixed block (76), slide bar (77), crown plate (78), dust screen (79), inclined plane ring (710), stopper (711), first spring (712) and flabellum (713), two support (71) of two symmetric distributions of fixedly connected with in intake pipe (6) common fixedly connected with commentaries on classics cover (72) between support (71), change cover (72) internal rotation and be connected with pivot (73), fixedly connected with flabellum (713) are gone up in pivot (73), fixedly connected with supports depression bar (75) on pivot (73), it is the L type to support depression bar (75).

5. The toxic, flammable gas warning device of claim 4, wherein: two limiting rings (74) are fixedly connected to the rotating shaft (73), and the two limiting rings (74) are in contact with each other to form a rotating sleeve (72).

6. The toxic, flammable gas warning device of claim 4, wherein: the inner wall of the air inlet pipe (6) is fixedly connected with two symmetrically distributed fixed blocks (76), each fixed block (76) is internally and slidably connected with a slide bar (77), the bottoms of the two slide bars (77) are fixedly connected with a ring plate (78) together, the ring plate (78) is fixedly connected with a dust screen (79), the bottom of the dust screen (79) is fixedly connected with an inclined ring (710), the inclined ring (710) is contacted with the pressing rod (75), the sliding rod (77) is fixedly connected with a limit block (711), the limiting block (711) is made of stainless steel, a first spring (712) is sleeved outside the sliding rod (77), one end of the first spring (712) is fixedly connected with a fixing block (76), the other end of the first spring (712) is fixedly connected with a ring plate (78), and the ring plate (78) is connected with the air inlet pipe (6) in a sliding manner.

7. The toxic, flammable gas warning device of claim 1, wherein: the installation and fixation mechanism (8) comprises a limiting sleeve (81), a slot (82), a guide groove (83), a guide rod (84), a moving block (85), a first hinged arm (86), a second hinged arm (87), a second spring (88), a threaded cap (89) and a pressing wheel (810), the limiting sleeve (81) is fixedly connected in the detection box (1), a sponge fiber net (9) and an active carbon filter screen (10) are placed in the limiting sleeve (81), the slot (82) is formed in the bottom of the limiting sleeve (81), two guide grooves (83) which are symmetrically distributed are formed in the inner wall of the detection box (1), the guide rod (84) is fixedly connected in each guide groove (83), the moving block (85) is sleeved outside the guide rod (84) in a sliding mode, the moving block (85) is in contact with the inner surface of the guide grooves (83), the first hinged arm (86) is hinged to the moving block (85), the internal surface of detection case (1) articulates there is second articulated arm (87), it is articulated between second articulated arm (87) and first articulated arm (86), fixedly connected with pinch roller (810) on second articulated arm (87), pinch roller (810) and active carbon filter screen (10) contact, there is threaded cap (89) through threaded connection on guide arm (84), threaded cap (89) and movable block (85) contact, second spring (88) have been cup jointed to the outside of guide arm (84).

8. The toxic, flammable gas warning device of claim 1, wherein: one end of the second spring (88) is fixedly connected with a moving block (85), and the other end of the second spring (88) is fixedly connected to the inner surface of the guide groove (83).