Inspection type combustible gas alarm device

Abstract

The invention discloses an inspection type combustible gas alarm device, which relates to the technical field of alarm devices and comprises a slide rail, a mobile vehicle loaded on the slide rail and a detection alarm mechanism mounted on the mobile vehicle. The detection alarm mechanism further comprises an air duct, a rotating shaft, a first fan and a second fan, the air duct is installed on the moving vehicle through an installation frame, the rotating shaft is coaxially and rotatably installed in the air duct, the first fan and the second fan are fixedly installed at the two ends of the rotating shaft respectively, and the combustible gas detector is assembled in the air duct; a rotating column is vertically and fixedly arranged in the middle of the outer side wall of the air duct and rotationally assembled on a mounting frame, and a rotating mechanism used for driving the rotating column to rotate is further arranged on the mounting frame. The mobile vehicle can drive the detection alarm mechanism to reciprocate on the slide rail to inspect a detection area, so that the detection range of the device is widened, and the detection alarm precision of the detection area is improved.

Description

Technical Field

[0001] The invention relates to the technical field of alarm devices, and in particular to a patrol-type combustible gas alarm device. Background Art

[0002] A combustible gas detector is a detector that responds to the concentration of a single or multiple combustible gases. With the rapid development of urban gas, natural gas and chemical industries, the types and application scope of flammable and explosive gases are constantly increasing. Once these flammable and explosive gases leak during production and use, they will cause major accidents such as poisoning, fire and explosion. When a combustible gas leaks in an industrial environment or daily living environment, and the combustible gas alarm detects that the concentration of the combustible gas reaches the alarm value set by the alarm, the combustible gas alarm will send out an audible and visual alarm signal to remind people to take safety measures such as evacuating personnel, forcing ventilation, and shutting down equipment.

[0003] However, when the existing combustible gas detection alarm device is in use, it can only be fixed in a certain place. When the distance to the combustible gas detection alarm device is far away, the combustible gas detection alarm device cannot detect the combustible gas and alarm in time and effectively, which has certain limitations. Secondly, the existing device cannot pre-treat the detected gas when detecting the gas. Dust and impurities in the gas are easily blown to the detection head along with the gas. Therefore, the detection head is easily interfered by impurities, resulting in low accuracy of detection alarm. Summary of the invention

[0004] The purpose of the present invention is to provide a patrol-type combustible gas alarm device to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0006] The present invention provides a patrol-type combustible gas alarm device, comprising a slide rail, a mobile vehicle loaded on the slide rail, and a detection alarm mechanism installed on the mobile vehicle; the detection alarm mechanism also comprises a wind tube, a rotating shaft, a first fan and a second fan, the wind tube is installed on the mobile vehicle through a mounting frame, the rotating shaft is coaxially mounted in the wind tube, and the first fan and the second fan are respectively fixedly mounted at both ends of the rotating shaft, and the combustible gas detector is assembled in the wind tube; a rotating column is vertically fixedly arranged in the middle of the outer side wall of the wind tube, the rotating column is rotatably mounted on the mounting frame, and the mounting frame is also provided with a rotating mechanism for driving the rotating column to rotate; filter screens are installed at both ends of the wind tube, the rotating shaft is connected to a driving device, and the driving device is used to drive the rotating shaft to rotate intermittently in forward and reverse directions.

[0007] Furthermore, a columnar channel extending into the air duct is opened through the interior of the rotating column, and the first driving mechanism includes a first bevel gear fixedly mounted on the rotating shaft, a driving shaft coaxially mounted in the columnar channel, and a second bevel gear fixedly mounted on one end of the driving shaft and meshing with the first bevel gear, the other end of the driving shaft passes through the columnar channel and is fixedly mounted with a transmission gear, and a rack meshing with the transmission gear is installed on the slide rail.

[0008] Furthermore, a columnar wind shield is coaxially fixedly installed in the wind duct between the first fan and the second fan through a supporting structure, and an annular wind gap is formed between the outer wall of the wind shield and the inner wall of the wind duct, and the wind shield includes symmetrically arranged frustum bodies, and a connector evenly fixedly arranged between the outer edges of a pair of frustum bodies along the circumferential direction, wherein the bottom surfaces of a pair of the frustum bodies are arranged opposite to each other, and an air buffer groove is formed between adjacent connectors, and a movable plate is slidably installed inside the air buffer groove, and a transmission mechanism is connected to the rotating shaft and each movable plate, and the transmission mechanism can make the cross plate continuously move back and forth in the air buffer groove when the rotating shaft rotates, and a combustible gas detector is installed in each of the air buffer grooves, and the detection head of the combustible gas detector is in the air buffer groove.

[0009] Furthermore, the support structure includes spiral blades uniformly arranged between the outer wall of the truncated cone body and the inner wall of the wind tube along the circumferential direction, and a spiral channel is formed between adjacent spiral blades.

[0010] Furthermore, the transmission mechanism includes two rotating disks fixedly mounted on a rotating shaft, the two rotating disks are located between a pair of frustum bodies, and guide grooves are provided on opposite sides of the two rotating disks, the guide grooves include a first arc groove, a second arc groove, and a transition groove symmetrically connected between the two ends of the first arc groove and the second arc groove, wherein the center of the first arc groove coincides with the center of the second arc groove, and the radius of the first arc groove is greater than the radius of the second arc groove, guide rods are vertically fixed at both ends of the movable plate close to the rotating shaft, and the guide rod extends from one end of the guide rod away from the movable plate to the corresponding guide groove and is fixedly connected to a guide column slidably fitted in the wire groove.

[0011] Furthermore, the rotating mechanism includes a rotating seat rotatably matched with the rotating column, and a motor fixed on the rotating seat, and the output end of the motor is transmission-connected to the rotating column through a chain mechanism.

[0012] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0013] 1. The mobile vehicle of the present invention can drive the detection alarm mechanism to move back and forth on the slide rail to inspect the detection area, so as to increase the detection range of the device, thereby improving the detection alarm accuracy of the detection area.

[0014] 2. During the detection process of the alarm mechanism of the present invention, the rotating mechanism can drive the rotating column to rotate to change the angle of the wind tube, thereby enabling the wind tube to absorb air from different directions, thereby further improving the detection range of the device.

[0015] 3. The filter net of the present invention can filter the air entering the wind tube to prevent dust in the external air from entering the wind tube along with the gas and interfering with the detection head.

[0016] 4. The driving device of the present invention drives the rotating shaft to rotate forward and reversely through intermittent mode to change the rotation direction of the first fan and the second fan, thereby changing the direction of the air flow in the air duct, thereby backwashing the dust on the filter screen.

[0017] 5. The transmission mechanism of the present invention can drive the horizontal plate to move back and forth in the air buffer groove, so that the air in the annular wind gap enters into several air buffer grooves in turn. When the air enters the air buffer groove, the gas flow rate decreases, thereby reducing the air flow rate near the detection head of the combustible gas detector, thereby avoiding the fast air flow rate affecting the detection accuracy of the combustible gas detector, resulting in a reduction in the accuracy of the detection alarm of the device.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the detection alarm mechanism of the present invention;

[0022] Figure 3 It is a schematic diagram of the top view of the detection alarm mechanism of the present invention;

[0023] Figure 4 yes Figure 3 AA structural diagram;

[0024] Figure 5 yes Figure 3 BB structural diagram;

[0025] Figure 6 yes Figure 2 The schematic diagram of the structure after the air duct is hidden;

[0026] Figure 7 yes Figure 6 The schematic diagram of the structure after the windshield is hidden;

[0027] Figure 8 yes Figure 7 Schematic diagram of the local structure at location C.

[0028] In the figure:

[0029] 1-slide rail; 11-mobile vehicle; 2-combustible gas detector; 3-buzzer alarm; 4-wind tube; 41-rotating shaft; 42-first fan; 43-second fan; 44-rotating column; 441-columnar channel; 45-rotating mechanism; 451-rotating seat; 452-motor; 453-chain mechanism; 46-filter; 5-mounting frame; 6-driving device; 61-first bevel gear; 62-driving shaft; 63-second Bevel gear; 64-transmission gear; 65-rack; 7-support structure; 71-spiral blade; 72-spiral channel; 8-wind shield; 81-cone body; 82-connector; 83-air buffer groove; 84-movable plate; 85-transmission mechanism; 851-rotating disk; 852-guide groove; 8521-first circular arc groove; 8522-second circular arc groove; 8523-transition groove; 853-guide rod; 854-guide column. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0031] See also Figure 1-Figure 8 The present invention provides a patrol-type combustible gas alarm device, comprising a slide rail 1, a mobile vehicle 11 loaded on the slide rail 1, and a detection alarm mechanism installed on the mobile vehicle 11, wherein the detection alarm mechanism comprises a combustible gas detector 2 and a buzzer alarm 3.

[0032] When in use, the slide rail 1 is laid above the detection area, and the mobile vehicle 11 can drive the detection alarm mechanism to move back and forth on the slide rail 1 to inspect the detection area. Among them, the combustible gas detector 2 in the detection alarm mechanism can detect and process the combustible gas in the detection area. When the detection head of the combustible gas detector 2 detects that the concentration of combustible gas in the detection area reaches a certain standard, the buzzer alarm 3 can immediately sound an alarm to remind relevant personnel.

[0033] Combination Figure 1 , Figure 2 and Figure 4 As shown, in order to improve the detection range, in this embodiment, the detection alarm mechanism further includes a wind tube 4, a rotating shaft 41, a first fan 42 and a second fan 43. The wind tube 4 is installed on the mobile vehicle 11 through a mounting frame 5. The rotating shaft 41 is coaxially rotatably installed in the wind tube 4, and the first fan 42 and the second fan 43 are respectively fixedly installed at both ends of the rotating shaft 41. The combustible gas detector 2 is assembled in the wind tube 4. Based on the above design, the first fan 42 and the second fan 43 are driven to rotate by the rotating shaft 41, so that the external air can continuously flow into the wind tube 4 during the movement of the detection alarm mechanism, so that the air in the detection area can be quickly detected by the combustible gas detector 2, which can improve the detection range of the device on the one hand, and improve the detection speed of the device on the other hand.

[0034] like Figure 5 As shown, in this embodiment, a rotating column 44 is vertically fixedly provided in the middle of the outer wall of the wind tube 4, and the rotating column 44 is rotatably mounted on the mounting frame 5. The mounting frame 5 is also provided with a rotating mechanism 45 for driving the rotating column 44 to rotate. Based on the above design, during the detection process of the detection alarm mechanism, the rotating mechanism 45 can drive the rotating column 44 to rotate to change the angle of the wind tube 4, so that the wind tube 4 can absorb air from different directions, thereby further improving the detection range of the device;

[0035] To prevent dust from the outside air from entering the wind tube 4, causing the detection head of the combustible gas detector 2 to be interfered by impurities, thereby reducing the accuracy of the combustible gas detector 2, such as Figure 4 As shown, in this embodiment, both ends of the wind tube 4 are equipped with filter screens 46. Based on the above design, the filter screen 46 can filter the air entering the wind tube 4 to prevent dust in the external air from entering the wind tube 4 with the gas to interfere with the detection head.

[0036] Furthermore, if Figure 5As shown, in this embodiment, the rotating shaft 41 is connected to a driving device 6, and the driving device 6 is used to drive the rotating shaft 41 to rotate forward and backward intermittently. Based on the above design, the driving device 6 drives the rotating shaft 41 to rotate forward and backward intermittently to change the rotation direction of the first fan 42 and the second fan 43, thereby changing the airflow direction in the air duct 4, so as to backwash the dust on the filter 46. That is, when the rotating shaft 41 rotates forward, the left end of the wind cylinder 4 takes in air, and the right end of the wind cylinder 4 exhausts air. The filter 46 at the left end of the wind cylinder 4 can filter the air, and when the air is discharged, the filter 46 at the right end of the wind cylinder 4 is impacted by the air flow from the inside to the outside to backwash the dust on the filter 46 at the right end of the wind cylinder 4; when the rotating shaft 41 rotates reversely, the right end of the wind cylinder 4 takes in air, and the left end of the wind cylinder 4 exhausts air. The filter 46 at the right end can filter the air, and when the air is discharged, the filter 46 at the left end is impacted by the air flow from the inside to the outside to backwash the dust on the filter 46 at the left end of the wind cylinder 4.

[0037] like Figure 5 As shown, in this embodiment, the interior of the rotating column 44 is penetrated by a columnar passage 441 extending into the wind tube 4, and the driving device 6 includes a first bevel gear 61 fixedly mounted on the rotating shaft 41, a driving shaft 62 coaxially rotatably mounted in the columnar passage 441, and a second bevel gear 63 fixedly mounted at one end of the driving shaft 62 and meshing with the first bevel gear 61, and the other end of the driving shaft 62 penetrates the columnar passage 441 and is fixedly mounted with a transmission gear 64, as shown in FIG. Figure 1 As shown, a rack 65 meshing with a transmission gear 64 is installed on the slide rail 1. Based on the above design, when the moving vehicle 11 moves on the slide rail 1, the driving shaft 62 can be rotated through the cooperation of the transmission gear 64 and the rack 65, thereby causing the rotating shaft 41 to rotate accordingly, and because the moving vehicle 11 reciprocates on the slide rail 1, the rotating shaft 41 can intermittently complete positive and negative rotation when the moving vehicle 11 reciprocates.

[0038] Combination Figure 4 and Figure 6 As shown, in this embodiment, a columnar wind shield 8 is coaxially fixedly installed in the wind tube 4 between the first fan 42 and the second fan 43 through a supporting structure 7, and an annular wind gap is formed between the outer wall of the wind shield 8 and the inner wall of the wind tube 4, and the wind shield 8 includes symmetrically arranged frustum bodies 81, and a connecting body 82 uniformly fixedly arranged between the outer edges of a pair of frustum bodies 81 along the circumferential direction, wherein the bottom surfaces of the pair of frustum bodies 81 are arranged opposite to each other, and an air buffer groove 83 is formed between adjacent connecting bodies 82, and the air buffer groove 83 is slidably equipped with a movable plate 84 inside, as shown in FIG. Figure 7As shown, the rotating shaft 41 and each movable plate 84 are connected with a transmission mechanism 85, and the transmission mechanism 85 can make the cross plate continuously move back and forth in the air buffer groove 83 when the rotating shaft 41 rotates. A combustible gas detector 2 is installed in each of the air buffer grooves 83, and the detection head of the combustible gas detector 2 is in the air buffer groove 83.

[0039] Based on the above design, when external air enters the wind duct 4 from one end of the wind duct 4, the conical body 81 of the wind shield 8 can guide the external air to pass through the annular wind gap and then be discharged from the other end of the wind duct 4. During this process, the transmission mechanism 85 can drive the cross plate to move back and forth in the air buffer groove 83, so that the air in the annular wind gap enters several air buffer grooves 83 in turn. When the air enters the air buffer groove 83, the gas flow rate is reduced, thereby reducing the air flow rate near the detection head of the combustible gas detector 2, thereby avoiding the fast air flow rate affecting the detection accuracy of the combustible gas detector 2, resulting in a reduction in the accuracy of the detection alarm of the device.

[0040] It should be supplemented that the wind duct 4 of the device is constantly moving, so the air entering the wind duct 4 is also at different positions. When the concentration of combustible gas in the air at a certain place is high, the combustible gas detector 2 may not detect it due to the fast air flow rate. The present invention can continuously absorb the air in the annular wind gap through a plurality of air buffer slots 83, thereby reducing the air flow rate around the combustible gas detector 2, thereby improving the detection alarm accuracy of the device.

[0041] like Figure 6 As shown, in this embodiment, the support structure 7 includes spiral blades 71 uniformly arranged between the outer wall of the truncated cone body 81 and the inner wall of the wind tube 4 along the circumferential direction, and a spiral channel 72 is formed between adjacent spiral blades 71. Based on the above design, when the air enters the annular wind gap, the spiral channel 72 formed by the spiral blades 71 can rotate the air, so that the air is mixed evenly, thereby improving the uniformity of the air in the annular wind gap, thereby improving the accuracy of the detection alarm of the device.

[0042] like Figure 7 and Figure 8As shown, in this embodiment, the transmission mechanism 85 includes two rotating disks 851 fixedly assembled on the rotating shaft 41, the two rotating disks 851 are located between a pair of frustum bodies 81, and guide grooves 852 are provided on opposite sides of the two rotating disks 851, the guide grooves 852 include a first circular arc groove 8521, a second circular arc groove 8522, and a transition groove 8523 symmetrically connected between the first circular arc groove 8521 and the second circular arc groove 8522, wherein the center of the first circular arc groove 8521 coincides with the center of the second circular arc groove 8522, and the radius of the first circular arc groove 8521 is greater than the radius of the second circular arc groove 8522, and guide rods 853 are vertically fixed at both ends of the movable plate 84 close to the rotating shaft 41, and the guide rod 853 extends from one end of the movable plate 84 to the corresponding guide groove 852, and is fixedly connected to a guide column 854 slidably adapted in the wire groove. Based on the above design, when the rotating shaft 41 rotates, the rotating shaft 41 can drive the rotating disk 851 to rotate, thereby causing the guide column 854 to move in the guide groove 852. When the guide column 854 passes through the first arc groove 8521 in the guide groove 852, it can move back and forth once, thereby sucking the air in the annular wind gap into the air buffer groove, so that the combustible gas detector 2 can detect the air in the air buffer groove.

[0043] like Figure 5 As shown, in this embodiment, the rotating mechanism 45 includes a rotating seat 451 that rotates with the rotating column 44, and a motor 452 fixed on the rotating seat 451, and the output end of the motor 452 is transmission-connected to the rotating column 44 through a chain mechanism 453.

[0044] 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 patrol-type combustible gas alarm device, comprising a slide rail, a mobile vehicle mounted on the slide rail, and a detection alarm mechanism installed on the mobile vehicle; characterized in that: The detection alarm mechanism also includes a wind tube, a rotating shaft, a first fan and a second fan. The wind tube is installed on a mobile vehicle through a mounting frame. The rotating shaft is coaxially mounted in the wind tube, and the first fan and the second fan are respectively fixedly mounted at both ends of the rotating shaft. The combustible gas detector is installed in the wind tube; a rotating column is vertically fixedly arranged in the middle of the outer side wall of the wind tube, and the rotating column is rotatably mounted on the mounting frame. The mounting frame is also provided with a rotating mechanism for driving the rotating column to rotate; filters are installed at both ends of the wind tube, and the rotating shaft is connected to a driving device, and the driving device is used to drive the rotating shaft to rotate intermittently in forward and reverse directions.

2. The patrol-type combustible gas alarm device according to claim 1 is characterized in that: The interior of the rotating column is penetrated by a columnar channel extending into the air duct, the first driving mechanism includes a first bevel gear fixedly mounted on the rotating shaft, a driving shaft coaxially mounted in the columnar channel, and a second bevel gear fixedly mounted on one end of the driving shaft and meshing with the first bevel gear, the other end of the driving shaft passes through the columnar channel and is fixedly mounted with a transmission gear, and a rack meshing with the transmission gear is installed on the slide rail.

3. The patrol-type combustible gas alarm device according to claim 1 is characterized in that: A columnar wind shield is coaxially fixedly installed in the wind duct between the first fan and the second fan through a supporting structure, and an annular wind gap is formed between the outer wall of the wind shield and the inner wall of the wind duct, and the wind shield includes symmetrically arranged frustum bodies, and a connector evenly fixedly arranged between the outer edges of a pair of frustum bodies along the circumferential direction, wherein the bottom surfaces of a pair of the frustum bodies are arranged opposite to each other, and an air buffer groove is formed between adjacent connectors, and a movable plate is slidably installed inside the air buffer groove, and a transmission mechanism is connected to the rotating shaft and each movable plate, and the transmission mechanism can make the cross plate continuously move back and forth in the air buffer groove when the rotating shaft rotates, and a combustible gas detector is installed in each of the air buffer grooves, and the detection head of the combustible gas detector is in the air buffer groove.

4. The patrol-type combustible gas alarm device according to claim 3 is characterized in that: The support structure comprises spiral blades which are evenly arranged between the outer wall of the truncated cone body and the inner wall of the wind tube along the circumferential direction, and spiral channels are formed between adjacent spiral blades.

5. The patrol-type combustible gas alarm device according to claim 3 is characterized in that: The transmission mechanism includes two rotating disks fixedly mounted on a rotating shaft, the two rotating disks are located between a pair of frustum bodies, and guide grooves are provided on opposite sides of the two rotating disks, the guide grooves include a first arc groove, a second arc groove, and a transition groove symmetrically connected between the two ends of the first arc groove and the second arc groove, wherein the center of the first arc groove coincides with the center of the second arc groove, and the radius of the first arc groove is greater than the radius of the second arc groove, guide rods are vertically fixed at both ends of the movable plate close to the rotating shaft, and the guide rod extends from one end of the guide rod away from the movable plate to the corresponding guide groove, and is fixedly connected to a guide column slidably fitted in the wire groove.

6. The patrol-type combustible gas alarm device according to claim 1 is characterized in that: The rotating mechanism comprises a rotating seat rotatably matched with the rotating column, and a motor fixed on the rotating seat, and the output end of the motor is transmission-connected with the rotating column through a chain mechanism.

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