A gas fire alarm capable of preventing electromagnetic interference

Abstract

The present invention relates to the technical field of fire alarms, and specifically to an electromagnetic interference-proof gas fire alarm, comprising a gas fire alarm body, wherein the bottom of the gas fire alarm body is fixedly connected to an air inlet pipe, the outer walls on both sides of the air inlet pipe are fixedly connected to transverse pipes, a fixing plate is fixedly connected to the lower part of the inside of the air inlet pipe, and an inspection door is movably connected to the lower part of the outer wall of the air inlet pipe. The suction force generated by the operation of the suction fan can move the air outside the gas fire alarm body through the inside of the transverse pipe to the inside of the air inlet pipe, ensuring that the gas fire alarm body can monitor the gas changes in the surrounding environment in a timely and effective manner, and the corresponding operation of the suction fan allows the air outside the gas fire alarm body to be quickly sucked into the gas fire alarm body, and this forced airflow can speed up the contact speed between the gas molecules and the gas sensing module, thereby improving the response speed of the alarm.

Description

Technical Field

[0001] The invention belongs to the technical field of fire alarms, and in particular relates to a gas fire alarm that is resistant to electromagnetic interference. Background Art

[0002] The fire alarm determines whether there is a fire or dangerous situation by sensing the concentration of specific gases in the air. Its core component is a highly sensitive gas sensor that can accurately detect the presence of flammable or toxic gases. When the gas concentration reaches the preset alarm threshold, the alarm will immediately emit an audible and visual alarm signal to remind personnel to take emergency measures.

[0003] However, the conventional device still has the following problems when used:

[0004] The patent application publication number is CN213146029U, which discloses a sound and light alarm device that can realize fire detection. By adding a strap on the display table, this device can be directly connected to the pipe or column structure, which is convenient and quick, and can be adjusted according to the diameter of the pipe or column structure. The installation range is wide. The design of the slip ring makes it easy to fit the strap tightly against the pipe or column structure, thereby making the connection between the strap and the pipe or column structure more stable.

[0005] When combustible gas or toxic gas leaks, it diffuses to the gas sensing module inside the gas fire alarm. Relying on the natural process of air flow, this transfer process often takes a certain amount of time. However, during this necessary transfer time, the leakage rate of combustible gas or toxic gas will continue to accelerate, thereby exacerbating the potential dangerous situation.

[0006] Therefore, we need a gas fire alarm that is anti-electromagnetic interference to solve the problem that combustible gas or toxic gas leaks cannot be quickly transmitted to the gas sensing module inside the fire alarm. It can enable combustible gas or toxic gas to be quickly transmitted to the gas sensing module inside the fire alarm when it leaks. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention aims to provide a gas fire alarm that is resistant to electromagnetic interference and has the advantage of enabling the leakage of combustible gas or toxic gas to be quickly transmitted to the gas sensing module inside the fire alarm.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: comprising a gas fire alarm body, wherein the bottom of the gas fire alarm body is fixedly connected to an air inlet pipe, the outer walls on both sides of the air inlet pipe are fixedly connected to cross pipes, a fixed plate 1 is fixedly connected to the lower part of the inside of the air inlet pipe, an inspection door is movably connected to the lower part of the outer wall of the air inlet pipe, an air suction mechanism is fixedly connected to the outer wall of the top of the fixed plate 1, the air suction mechanism comprises a motor and a fixed plate 2, the outer wall of the bottom of the motor is fixedly connected to the middle position of the outer wall of the top of the fixed plate 1, and the outer walls of the two fixed plates 2 are fixedly connected to the inside of the cross pipe.

[0009] Preferably, the output end of the motor is fixedly connected to a main shaft, the outer wall of the main shaft is fixedly connected to fan blades, and the upper part of the outer wall of the main shaft is fixedly connected to a main gear.

[0010] Preferably, the internal rotation of the fixed plate 2 is connected to a secondary shaft, the outer wall of one end of the secondary shaft is fixedly connected to a secondary gear, the outer wall of the secondary gear is meshingly connected to the outer wall of the main gear, and the outer wall of the other end of the secondary shaft is fixedly connected to an air intake fan, and a plurality of air intake fans are provided with air flow holes connected to the outer walls on both sides.

[0011] Preferably, an elastic filter net is fixedly connected inside the two transverse tubes, a collecting trough is movably connected to opposite sides of the two transverse tubes, and a magnetic block is fixedly connected below the inside of the elastic filter net.

[0012] Preferably, an L-shaped rod is fixedly connected to the outer wall of the secondary shaft on one side close to the air intake fan, and a magnetic plate is fixedly connected to the outer wall of one end of the L-shaped rod. The outer wall on one side of the magnetic plate is connected to the outer wall on one side of the magnetic block with opposite poles.

[0013] Preferably, the interior of the air inlet pipe is fixedly connected to a filter bin, both sides of the interior of the filter bin are fixedly connected to limiting grooves, the interior of the filter bin is slidably connected to a mounting frame 1, the outer wall of the top of the mounting frame 1 is fixedly connected to a guide plate, the outer walls of the two guide plates are slidably connected to the interior of the limiting grooves, a molecular sieve is movably connected to the lower part of the interior of the mounting frame 1, and a silica gel adsorption plate is movably connected to the upper part of the interior of the mounting frame 1.

[0014] Preferably, the outer wall of the bottom of the mounting frame is fixedly connected to the supporting frame, a threaded hole is provided in the middle of the bottom of the supporting frame, and a threaded rod is connected to the inner thread of the threaded hole.

[0015] Preferably, the outer wall of the top of the main gear is fixedly connected to a mounting seat, the outer wall of the mounting seat is provided with a socket, the interior of the socket is rotatably connected to the outer wall of the threaded rod, a sliding groove is provided below the outer wall of the threaded rod, the interior of the threaded rod is fixedly connected to a mounting plate, the outer walls on both sides of the mounting plate are fixedly connected to two return springs, the outer walls on the opposite sides of the two return springs are fixedly connected to an insertion rod, the outer walls of the two insertion rods are slidably connected to the interior of the threaded rod, and the outer walls of the two insertion rods are movably plugged into the interior of the socket.

[0016] Preferably, a return spring three is fixedly connected to the upper part of the interior of the threaded rod, and a U-shaped groove is fixedly connected to the outer wall of the bottom of the return spring three. The interior of the U-shaped groove is in movable contact with the upper part of the outer wall of the insertion rod, and a handle is fixedly connected to the outer wall of one side of the U-shaped groove, and the outer wall of the handle is slidably connected to the interior of the slide groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The suction force generated by the suction fan can transport the air outside the gas fire alarm body through the inside of the cross pipe to the inside of the air intake pipe, ensuring that the gas fire alarm body can timely and effectively monitor gas changes in the surrounding environment. The corresponding operation of the suction fan allows the air outside the gas fire alarm body to be quickly sucked into the gas fire alarm body. This forced airflow can speed up the contact speed between gas molecules and the gas sensing module, thereby improving the response speed of the alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the structure of the elastic filter screen of the present invention.

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the transverse tube of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the second fixing plate of the present invention.

[0023] Figure 5 For the present invention Figure 4 Enlarged structural diagram at location A.

[0024] Figure 6 It is a structural schematic diagram of the second mounting frame of the present invention.

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the air intake pipe of the present invention.

[0026] Figure 8 For the present invention Figure 3 Enlarged structural diagram at location B.

[0027] Fig. 9 For the present invention Figure 7 Enlarged structural diagram at location C.

[0028] In the figure: 1. Gas fire alarm body; 11. Air inlet pipe; 2. Horizontal pipe; 21. Elastic filter; 22. Collecting tank; 23. Magnetic block; 24. L-shaped rod; 25. Magnetic plate; 3. Motor; 31. Main shaft; 32. Main gear; 33. Fixed plate 1; 34. Sub gear; 35. Sub shaft; 36. Suction fan; 37. Fan blade; 38. Fixed plate 2; 39. Air flow hole; 4. Threaded rod; 41. Support frame; 4 2. Mounting frame one; 43. Silica gel adsorption plate; 44. Filter chamber; 45. Molecular sieve; 46. Guide plate; 47. Limiting groove; 5. Reset spring one; 51. Wind baffle; 52. Mounting frame two; 53. Cleaning cotton; 54. Guide rod; 6. Mounting seat; 61. Socket; 62. Handle; 63. Slide groove; 64. Insert rod; 65. Reset spring two; 66. Mounting plate; 67. U-shaped groove; 68. Reset spring three. DETAILED DESCRIPTION

[0029] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] For example, see Figures 1 to 9 The present invention provides a technical solution for a gas fire alarm with electromagnetic interference protection: it includes a gas fire alarm body 1, an air intake pipe 11 is fixedly connected to the bottom of the gas fire alarm body 1, and the outer walls on both sides of the air intake pipe 11 are fixedly connected to the transverse pipe 2, a fixed plate 33 is fixedly connected to the lower part of the inside of the air intake pipe 11, and an inspection door is movably connected to the lower part of the outer wall of the air intake pipe 11, and an air suction mechanism is fixedly connected to the outer wall of the top of the fixed plate 33, and the air suction mechanism includes a motor 3 and a fixed plate 2 38, the outer wall of the bottom of the motor 3 is fixedly connected to the middle position of the outer wall of the top of the fixed plate 33, and the outer walls of the two fixed plates 2 38 are fixedly connected to the inside of the transverse pipe 2, thereby realizing the basic requirement of accelerating the gas to enter the inside of the gas fire alarm body 1.

[0031] Embodiment 2, on the basis of embodiment 1, the output end of the motor 3 is fixedly connected to the main shaft 31, the outer wall of the main shaft 31 is fixedly connected to the fan blade 37, the upper part of the outer wall of the main shaft 31 is fixedly connected to the main gear 32, the internal rotation of the fixed plate 2 38 is connected to the secondary shaft 35, the outer wall of one end of the secondary shaft 35 is fixedly connected to the secondary gear 34, the outer wall of the secondary gear 34 is meshed with the outer wall of the main gear 32, the outer wall of the other end of the secondary shaft 35 is fixedly connected to the suction fan 36, and multiple suction fans 36 are provided with air flow holes 39 connected to the outer walls on both sides.

[0032] The suction force generated by the suction fan 36 can move the air outside the gas fire alarm body 1 through the inside of the cross pipe 2 to the inside of the air inlet pipe 11, ensuring that the gas fire alarm body 1 can timely and effectively monitor the gas changes in the surrounding environment, avoiding the slow natural flow of air. In the process of transferring combustible gas or toxic gas to the gas sensing module, the leakage rate of combustible gas or toxic gas will continue to accelerate, thereby exacerbating potential dangerous conditions. The corresponding operation of the suction fan 36 enables the air outside the gas fire alarm body 1 to be quickly sucked into the gas fire alarm body 1. This forced airflow can accelerate the contact speed between gas molecules and the gas sensing module, thereby improving the response speed of the alarm. The function of the suction fan 36 can also enable the gas fire alarm body 1 to monitor gas leakage at a farther distance, because the airflow can bring gas molecules at a distant place to the vicinity of the gas fire alarm body 1.

[0033] The air flow holes 39 provided on the air intake fan 36 can change the flow direction and velocity distribution of the air flow to make the air flow more uniform and stable. At the same time, the air flow holes 39 can change the flow path of the air flow, reduce the friction and collision between the air flow and the air intake fan 36, thereby reducing noise and improving the comfort of use of the gas fire alarm body 1.

[0034] Embodiment three, on the basis of embodiment two, the inside of the two transverse tubes 2 is fixedly connected with an elastic filter screen 21, the opposite sides of the two transverse tubes 2 are movably connected with a collecting tank 22, a magnetic block 23 is fixedly connected to the lower part of the inside of the elastic filter screen 21, the outer wall of the secondary shaft 35 is fixedly connected with an L-shaped rod 24 on the side close to the suction fan 36, the outer wall of one end of the L-shaped rod 24 is fixedly connected with a magnetic plate 25, and the outer wall on one side of the magnetic plate 25 is connected with the outer wall on one side of the magnetic block 23 by attraction with opposite poles.

[0035] By setting the elastic filter 21, when the negative pressure generated by the operation of the suction fan 36 brings the air outside the gas fire alarm body 1 into the gas fire alarm body 1, the air can be filtered through the elastic filter 21, thereby preventing the gray water vapor in the air from entering the interior of the gas fire alarm body 1 with the flow of gas, and correspondingly preventing these impurities from entering the internal sensor area of ​​the gas fire alarm body 1, which helps the gas sensing module to more accurately detect combustible gas or toxic gas, thereby improving the fire detection accuracy of the gas fire alarm body 1.

[0036] Embodiment 4, on the basis of embodiment 2, a filter bin 44 is fixedly connected inside the air inlet pipe 11, limiting grooves 47 are fixedly connected to both sides inside the filter bin 44, a mounting frame 42 is slidably connected inside the filter bin 44, a guide plate 46 is fixedly connected to the outer wall at the top of the mounting frame 42, the outer walls of the two guide plates 46 are slidably connected to the inside of the limiting grooves 47, a molecular sieve 45 is movably connected to the lower part of the mounting frame 42, a silica gel adsorption plate 43 is movably connected to the upper part of the mounting frame 42, a support frame 41 is fixedly connected to the outer wall at the bottom of the mounting frame 42, a threaded hole is provided in the middle of the bottom of the support frame 41, a threaded rod 4 is threadedly connected to the inner part of the threaded hole.

[0037] When air flows through the molecular sieve 45, it can effectively filter the air, intercept non-toxic gas components, and allow toxic gases and combustible gases to pass smoothly. Then, these gases continue to move forward and reach the silica gel adsorption plate 43 for more in-depth secondary filtration. The silica gel adsorption plate 43, with its strong adsorption capacity, further adsorbs and filters out non-toxic gases, and ultimately ensures that only toxic or combustible gases can pass through this series of filtering processes smoothly, avoiding the interference of non-toxic gases on the gas sensing module, and correspondingly improving the accuracy and sensitivity of the gas fire alarm body 1 to toxic or combustible gas detection. At the same time, this also ensures that the gas fire alarm body 1 can accurately respond to fire or other potential safety threats in the first time, providing strong protection for people's life and property safety.

[0038] Embodiment 5, on the basis of embodiment 4, the outer wall of the top of the main gear 32 is fixedly connected with the mounting seat 6, the outer wall of the mounting seat 6 is provided with a socket 61, the interior of the socket 61 is rotatably connected to the outer wall of the threaded rod 4, a slide groove 63 is provided at the bottom of the outer wall of the threaded rod 4, the interior of the threaded rod 4 is fixedly connected with a mounting plate 66, the outer walls on both sides of the mounting plate 66 are fixedly connected with return spring 2 65, the outer wall on the opposite side of the two return springs 2 65 is fixedly connected with an insertion rod 64, the outer walls of the two insertion rods 64 are slidably connected with the interior of the threaded rod 4, the outer walls of the two insertion rods 64 are movably plugged into the interior of the socket 61, the upper part of the interior of the threaded rod 4 is fixedly connected with a return spring 3 68, the outer wall at the bottom of the return spring 3 68 is fixedly connected with a U-shaped groove 67, the interior of the U-shaped groove 67 is movably contacted with the upper part of the outer wall of the insertion rod 64, the outer wall on one side of the U-shaped groove 67 is fixedly connected with a handle 62, and the outer wall of the handle 62 is slidably connected with the interior of the slide groove 63.

[0039] When the threaded rod 4 is driven to move by the main gear 32, the threaded connection between the support frame 41 and the threaded rod 4 can be used to make the support frame 41 drive the mounting frame 42 to move downward, thereby moving the mounting frame 42 to move the molecular sieve 45 and the silica gel adsorption plate 43 to the inspection port, making it convenient for the operator to replace or clean the molecular sieve 45 and the silica gel adsorption plate 43, thereby ensuring that the molecular sieve 45 and the silica gel adsorption plate 43 are in good working condition.

[0040] Embodiment 6. On the basis of embodiment 2, the outer wall of one side of the plurality of suction fans 36 is fixedly connected with a reset spring 5, the outer wall of one end of the reset spring 5 is fixedly connected with a mounting frame 2 52, the outer wall of the top of the mounting frame 2 52 is fixedly connected with a wind blocking plate 51, the outer wall of one side of the mounting frame 2 52 is fixedly connected with a plurality of cleaning cottons 53, the outer wall of the cleaning cottons 53 is movably plugged into the interior of the air flow hole 39, the two ends of the outer wall of one side of the mounting frame 2 52 are fixedly connected with guide rods 54, and the outer walls of the two guide rods 54 are slidably connected to the interior of the air flow hole 39.

[0041] Through the movement of the wind blocking plate 51, the cleaning cotton 53 can be driven to move out from the interior of the air flow hole 39, and the guide rod 54 can slide inside the air flow hole 39. The cleaning cotton 53 can be moved in and out of the air flow hole 39 to clean the interior of the air flow hole 39, thereby preventing dust from remaining inside the air flow hole 39 and ensuring that the air suction efficiency of the suction fan 36 is not affected, thereby keeping the overall performance of the equipment in the best state.

[0042] The working principle and use process of the present invention are as follows: when in use, first, the motor 3 on the fixed plate 1 33 is started to work, and then the movement of the motor 3 can drive the main shaft 31 to move accordingly, and then the movement of the main shaft 31 can cause the main gear 32 and the fan blade 37 to rotate accordingly, and then the rotation of the main shaft 31 can drive the two sub-gears 34 to rotate at the same time, and then the rotation of the sub-gear 34 can make the sub-shaft 35 drive the suction fan 36 to rotate on the fixed plate 2 38, and then the suction fan 36 is used to work inside the transverse pipe 2. The suction force generated by the suction fan 36 can be used to draw the air outside the gas fire alarm body 1 through the inside of the transverse pipe 2 to the inside of the air intake pipe 11, ensuring that the gas fire alarm body 1 can and It can timely and effectively monitor the gas changes in the surrounding environment, avoiding the slow natural flow of air. In the process of transferring combustible gas or toxic gas to the gas sensing module, the leakage rate of combustible gas or toxic gas will continue to accelerate, thereby exacerbating the potential dangerous situation. The corresponding operation of the air intake fan 36 enables the air outside the gas fire alarm body 1 to be quickly sucked into the gas fire alarm body 1. This forced airflow can accelerate the contact speed between gas molecules and the gas sensing module, thereby improving the response speed of the alarm. The function of the air intake fan 36 can also enable the gas fire alarm body 1 to monitor gas leakage at a farther distance, because the airflow can bring gas molecules from a distant place to the vicinity of the gas fire alarm body 1.

[0043] The air flow holes 39 provided on the air intake fan 36 can change the flow direction and velocity distribution of the air flow to make the air flow more uniform and stable. At the same time, the air flow holes 39 can change the flow path of the air flow, reduce the friction and collision between the air flow and the air intake fan 36, thereby reducing noise and improving the comfort of use of the gas fire alarm body 1.

[0044] By setting the elastic filter 21, when the negative pressure generated by the operation of the suction fan 36 brings the air outside the gas fire alarm body 1 into the gas fire alarm body 1, the air can be filtered through the elastic filter 21, thereby preventing the gray water vapor in the air from entering the interior of the gas fire alarm body 1 with the flow of gas, and correspondingly preventing these impurities from entering the internal sensor area of ​​the gas fire alarm body 1, which helps the gas sensing module to more accurately detect combustible gas or toxic gas, thereby improving the fire detection accuracy of the gas fire alarm body 1.

[0045] While the secondary shaft 35 drives the suction fan 36 to rotate, the L-shaped rod 24 rotates synchronously. When the secondary shaft 35 changes the position of the magnetic block 23 through the L-shaped rod 24, the magnetic plate 25 and the magnetic block 23 will pull the magnetic block 23 and drive the elastic filter 21 to approach the magnetic plate 25 due to the principle of attraction between opposite poles. When the secondary shaft 35 continues to rotate and drives the magnetic plate 25 gradually away from the magnetic block 23, the magnetic connection between the two is disconnected, generating a separation force. This force not only prompts the elastic filter 21 to quickly return to its original position driven by the magnetic block 23, but also stimulates a slight vibration of the elastic filter 21, effectively shaking off the dust and water vapor attached to its surface into the collection tank 22 below, thereby ensuring the continuous and efficient filtering function of the elastic filter 21 and realizing the convenience of self-cleaning.

[0046] It should be noted that the elastic filter 21 is a prior art. The elastic filter 21 is a filter that can self-adjust when subjected to a certain pressure to adapt to different filtering needs. Its greatest feature is that it is elastic and can deform under external force and return to its original state after the external force disappears.

[0047] When air flows into the air inlet pipe 11, the strong wind flow generated by the rotation of the fan blades 37 will guide the air to flow upward and smoothly enter the filter chamber 44. At this time, the molecular sieve 45 arranged inside the filter chamber 44 can effectively filter the air when the air flows through the molecular sieve 45, intercepting non-toxic gas components while allowing toxic gases and combustible gases to pass smoothly. Then, these gases continue to move forward and reach the silica gel adsorption plate 43 for a more in-depth secondary filtration. The silica gel adsorption plate 43, with its strong adsorption capacity, further adsorbs and filters out non-toxic gases, ultimately ensuring that only toxic or combustible gases can pass through this series of filtering processes smoothly, avoiding the interference of non-toxic gases on the gas sensing module, and correspondingly improving the accuracy and sensitivity of the gas fire alarm body 1 to the detection of toxic or combustible gases. At the same time, this also ensures that the gas fire alarm body 1 can accurately respond to fire or other potential safety threats in the first time, providing a strong guarantee for the safety of people's lives and property.

[0048] After the operator stops the motor 3 and opens the inspection door on the air intake pipe 11, the operator can pull the handle 62 upward by hand, and the handle 62 moves upward, which will drive the U-shaped groove 67 to move upward, thereby releasing the fixation of the insertion rod 64 by the U-shaped groove 67. At this time, under the action of the reset spring 2 65, the insertion rod 64 can be pushed out from the inside of the threaded rod 4, thereby entering the inside of the insertion hole 61, and the threaded rod 4 can be fixed to the mounting seat 6. At this time, under the operation of the motor 3, the threaded rod 4 can move with the movement of the mounting seat 6, thereby increasing the flexibility of the movement of the threaded rod 4 and facilitating the operator to adjust the working state of the threaded rod 4.

[0049] When the threaded rod 4 is driven to move by the main gear 32, the threaded connection between the support frame 41 and the threaded rod 4 can be used to make the support frame 41 drive the mounting frame 42 to move downward, thereby moving the mounting frame 42 to move the molecular sieve 45 and the silica gel adsorption plate 43 to the inspection port, making it convenient for the operator to replace or clean the molecular sieve 45 and the silica gel adsorption plate 43, thereby ensuring that the molecular sieve 45 and the silica gel adsorption plate 43 are in good working condition.

[0050] It should be noted that: by setting the limit groove 47 and the guide plate 46, the movement direction of the mounting frame 42 can be limited. The guide plate 46 is always inside the limit groove 47. When the threaded rod 4 does not need to work, the motor 3 is stopped. The operator pushes the handle 62 to the top of the slide groove 63 with one hand, and pushes the insertion rod 64 from the insertion hole 61 into the inside of the threaded rod 4 with the other hand. The handle 62 is released first, and the U-shaped groove 67 can be pushed back to its original position under the action of the reset spring 3 68 to fix the insertion rod 64.

[0051] When the suction fan 36 stops moving, the cleaning cotton 53 on the mounting frame 2 52 can be driven to be inserted into the air flow hole 39 under the action of the reset spring 1 5. When the suction fan 36 is working, the air flow can blow the wind blocking plate 51 to move while the suction fan 36 sucks in the air flow. Then, through the movement of the wind blocking plate 51, the cleaning cotton 53 can be driven to move out from the air flow hole 39. The guide rod 54 slides inside the air flow hole 39. The inside of the air flow hole 39 can be cleaned by the cleaning cotton 53 going in and out of the air flow hole 39 to prevent dust from remaining inside the air flow hole 39, thereby ensuring that the suction efficiency of the suction fan 36 is not affected, thereby keeping the overall performance of the equipment in the best state.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas fire alarm with electromagnetic interference protection, comprising a gas fire alarm body (1), wherein the bottom of the gas fire alarm body (1) is fixedly connected with an air inlet pipe (11), characterized in that: The outer walls on both sides of the air intake pipe (11) are fixedly connected to the transverse pipe (2), the lower part of the interior of the air intake pipe (11) is fixedly connected to a fixing plate (33), the lower part of the outer wall of the air intake pipe (11) is movably connected to an inspection door, and the outer wall at the top of the fixing plate (33) is fixedly connected to an air suction mechanism; The air suction mechanism comprises a motor (3) and a second fixing plate (38); the outer wall at the bottom of the motor (3) is fixedly connected to the middle position of the outer wall at the top of the first fixing plate (33); the outer walls of the two second fixing plates (38) are fixedly connected to the inside of the transverse tube (2); the output end of the motor (3) is fixedly connected to a main shaft (31); the outer wall of the main shaft (31) is fixedly connected to a fan blade (37); and the upper part of the outer wall of the main shaft (31) is fixedly connected to a main gear (32); The air inlet pipe (11) is fixedly connected to a filter bin (44) inside, the filter bin (44) is slidably connected to a mounting frame (42) inside, the outer wall of the bottom of the mounting frame (42) is fixedly connected to a support frame (41), a threaded hole is provided in the middle of the bottom of the support frame (41), and a threaded rod (4) is threadedly connected inside the threaded hole; The outer wall of the top of the main gear (32) is fixedly connected with a mounting seat (6), the outer wall of the mounting seat (6) is provided with a socket (61), the interior of the socket (61) is rotatably connected with the outer wall of the threaded rod (4), a slide groove (63) is provided below the outer wall of the threaded rod (4), the interior of the threaded rod (4) is fixedly connected with a mounting plate (66), the outer walls on both sides of the mounting plate (66) are fixedly connected with two return springs (65), the outer walls on the opposite sides of the two return springs (65) are fixedly connected with an insertion rod (64), the outer walls of the two insertion rods (64) are slidably connected to the interior of the threaded rod (4), and the outer walls of the two insertion rods (64) are movably plugged into the interior of the socket (61).

2. The electromagnetic interference-proof gas fire alarm according to claim 1, characterized in that: The second fixing plate (38) is internally rotatably connected with a secondary shaft (35), the outer wall of one end of the secondary shaft (35) is fixedly connected with a secondary gear (34), the outer wall of the secondary gear (34) is meshingly connected with the outer wall of the main gear (32), the outer wall of the other end of the secondary shaft (35) is fixedly connected with an air intake fan (36), and a plurality of air intake fans (36) are provided with air flow holes (39) connected with the outer walls on both sides.

3. The electromagnetic interference-proof gas fire alarm according to claim 1, characterized in that: An elastic filter screen (21) is fixedly connected inside the two transverse tubes (2), a collecting tank (22) is movably connected on opposite sides of the two transverse tubes (2), and a magnetic block (23) is fixedly connected below the inside of the elastic filter screen (21).

4. The electromagnetic interference-proof gas fire alarm according to claim 2, characterized in that: An L-shaped rod (24) is fixedly connected to the outer wall of the secondary shaft (35) on one side close to the air suction fan (36), and a magnetic plate (25) is fixedly connected to the outer wall of one end of the L-shaped rod (24). The outer wall of one side of the magnetic plate (25) is connected to the outer wall of one side of the magnetic block (23) with opposite poles.

5. The electromagnetic interference-proof gas fire alarm according to claim 1, characterized in that: The two sides of the interior of the filter bin (44) are fixedly connected to the limiting grooves (47), the outer wall of the top of the mounting frame (42) is fixedly connected to the guide plate (46), the outer walls of the two guide plates (46) are slidably connected to the interior of the limiting grooves (47), the lower part of the interior of the mounting frame (42) is movably connected to the molecular sieve (45), and the upper part of the interior of the mounting frame (42) is movably connected to the silica gel adsorption plate (43).

6. The electromagnetic interference-proof gas fire alarm according to claim 1, characterized in that: A return spring three (68) is fixedly connected to the upper part of the interior of the threaded rod (4), and a U-shaped groove (67) is fixedly connected to the outer wall of the bottom of the return spring three (68). The interior of the U-shaped groove (67) is in movably contact with the upper part of the outer wall of the insertion rod (64). A handle (62) is fixedly connected to the outer wall of one side of the U-shaped groove (67), and the outer wall of the handle (62) is slidably connected to the interior of the slide groove (63).

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