Gas leakage alarm device

Abstract

The invention discloses a gas leakage alarm device, which belongs to the technical field of gas leakage detection and comprises a fixed plate, an annular box body is mounted below the fixed plate, a plurality of through grooves are uniformly formed in the peripheral wall of the outer side of the box body, a frame body is mounted in the through grooves, a filter screen is fixedly arranged in the frame body, and a detection unit is mounted on the bottom surface of the fixed plate. A storage box and a feeding box are rotationally connected to the peripheral wall of the outer side of the box body, and an insertion assembly matched with the frame body is arranged in the box body and located on the inner side of the through groove; through the arranged inserting rod, in the process that the inserting rod is inserted into the storage box, the filter screen blocked in the through groove can be pushed into the storage box to be stored, and in the process that the inserting rod is inserted into the feeding box, the foremost frame body in the feeding box can be driven into the through groove through cooperation of a limiting block and an annular groove; therefore, the filter screen in the through groove is replaced, and then the storage box and the feeding box are detached from the lantern ring.

Description

Technical Field

[0001] The present invention relates to the technical field of gas leakage detection, and particularly relates to a gas leakage alarm device. Background Art

[0002] A gas leakage alarm is a very important gas safety device, which is the last guarantee for the safe use of urban gas.

[0003] Chinese Patent CN218547658U discloses a gas leakage alarm device. Through the coordinated use of a motor, a first gear, a support tube, a second gear, a bracket and a brush plate, it can clean the dust on the surface of the gas alarm, avoiding the adhesion of dust on the surface of the gas alarm.

[0004] The above-mentioned device cleans the filter screen through a brush plate. On the one hand, the cleaning is not thorough enough. On the other hand, the dirt cleaned will fall into the interior of the gas alarm, thus affecting the use of the gas alarm. Subsequently, the entire device still needs to be disassembled for cleaning. In summary, the above-mentioned device still has room for improvement.

[0005] Therefore, it is necessary to provide a gas leakage alarm device to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a gas leakage alarm device to solve the problems in the above-mentioned background art that the existing device cleans the filter screen through a brush plate. On the one hand, the cleaning is not thorough enough. On the other hand, the dirt cleaned will fall into the interior of the gas alarm, thus affecting the use of the gas alarm.

[0007] Based on the above idea, the present invention provides the following technical solution: A gas leakage alarm device includes a fixing plate. A ring-shaped box body is installed below the fixing plate. A plurality of through slots are evenly opened on the outer peripheral wall of the box body, and a frame body is installed in the through slots. A filter screen is fixedly arranged in the frame body. A detection unit is installed on the bottom surface of the fixing plate. A storage box and a feeding box are rotatably connected to the outer peripheral wall of the box body. An insertion component matching with the frame body is arranged inside the box body on the inner side of the through slot;

[0008] When the insertion component pushes the frame body to move into the storage box, the frame body matching with the insertion component can be retained in the storage box. When the empty insertion component is inserted into the feeding box, the frame body in the front of the feeding box can be clamped with the insertion component, so that one frame body in the feeding box can be brought into the through slot during the retraction process of the insertion component.

[0009] As a further solution of the present invention: The plug-in component includes two plug rods arranged at the through groove. The frame body is provided with insertion holes that cooperate with the plug rods. A limiting block is elastically connected to the outer circumferential surface of the plug rod. One end of the limiting block away from the plug rod is an arc surface. An annular groove is provided on the inner wall of the insertion hole. When the arc surface end of the limiting block is inserted into the annular groove, the frame body can be clamped on the plug rod.

[0010] As a further solution of the present invention: Card slots are provided on the top wall and the bottom wall of the inner cavity of the storage box. Card blocks are elastically connected to the top surface and the bottom surface of the frame body.

[0011] As a further solution of the present invention: An inclined chute is provided at the center of the inner top wall of the feeding box. The cross-section of the chute is T-shaped. A slider is slidably assembled in the chute. The slider is integrally T-shaped. The protruding part at the bottom of the slider is denoted as a convex platform. The convex platform passes through the chute downward and coincides with the frame body in the feeding box on the horizontal plane.

[0012] As a further solution of the present invention: A plurality of strip-shaped grooves are evenly provided on the top wall of the chute. An insertion block is elastically connected to the top wall of the slider. The top of the insertion block is provided with a second inclined surface. A stop block is elastically connected to the top wall of the feeding box on one side of the chute. The surface of the stop block close to the frame body is inclined. Chamfers are provided at both side edges of the top and the bottom of the frame body.

[0013] As a further solution of the present invention: The card slots are located at positions close to both sides on the inner wall of the storage box.

[0014] As a further solution of the present invention: A suspension rod is fixedly installed between the top end face of the box body and the fixing plate.

[0015] As a further solution of the present invention: Both the storage box and the feeding box are set in a "hui" character shape, and a cover plate is fixedly installed at the end of the storage box and the feeding box away from the box body through bolts.

[0016] As a further solution of the present invention: An installation groove for slidably fitting the insertion block is provided on the top surface of the slider. A limiting spring is fixedly provided between the inner end face of the installation groove and the insertion block. A pull rope is fixedly connected to the bottom surface of the insertion block. The pull rope passes through the slider and is slidably fitted with it, and a pull ring is fixedly installed at the end of the pull rope passing through the slider.

[0017] Compared with the prior art, the beneficial effect of the present invention is that: Through the provided plug rod, during the process of inserting the plug rod into the storage box, the filter screen blocked in the through groove can be pushed into the storage box for storage. And during the process of inserting the plug rod into the interior of the feeding box, through the cooperation of the limiting block and the annular groove, the frontmost frame body in the feeding box can be driven into the through groove, thus completing the replacement of the filter screen in the through groove. After that, the storage box and the feeding box can be removed from the collar. Brief Description of the Drawings

[0018] The present invention will be further described below in conjunction with the drawings and embodiments.

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the internal structure of the box body of the present invention;

[0021] Figure 3 is a schematic diagram of the installation of the support ring of the present invention;

[0022] Figure 4 is a sectional view of the box body and the storage box of the present invention;

[0023] Figure 5 is the present invention Figure 4 enlarged schematic diagram of the structure at A;

[0024] Figure 6 is a distribution diagram of the pressing blocks of the present invention;

[0025] Figure 7 is a sectional view of the feeding box of the present invention;

[0026] Figure 8 is the present invention Figure 7 enlarged schematic diagram of the structure at B;

[0027] Figure 9 is a schematic diagram of the inclined groove structure of the present invention;

[0028] Figure 10 is a schematic diagram of the slider structure of the present invention.

[0029] In the figure: 1, fixing plate; 101, sealing plate; 2, box body; 201, positioning groove; 3, insertion rod; 4, frame body; 401, annular groove; 402, filter screen; 403, chamfer; 5, storage box; 501, card slot; 6, feeding box; 601, inclined groove; 602, strip-shaped groove; 7, support rod; 8, connecting plate; 9, second gear ring; 10, support ring; 11, ejector rod; 12, pressing block; 1201, extrusion surface; 13, slider; 1301, convex platform; 14, first incomplete gear; 15, first gear ring; 16, cover plate; 17, clamping block; 1701, first inclined surface; 18, limiting block; 1801, arc surface; 19, second incomplete gear; 20, insertion block; 2001, second inclined surface; 21, stop block; 22, detection unit; 23, suspension rod. Detailed Embodiments

[0030] As Figures 1-10 shown, a gas leakage alarm device includes a fixing plate 1 fixedly installed on a ceiling or a wall, in combination withFigure 1 As shown, a ring-shaped box body 2 is installed below the fixing plate 1. A plurality of through grooves are evenly formed on the outer peripheral wall of the box body 2, and a filtering unit is installed in the through grooves. Specifically, the filtering unit includes a "return" shaped frame body 4 and a filter screen 402 fixedly arranged in the frame body 4. The bottom surface of the fixing plate 1 is provided with a detection unit 22, and the detection unit 22 can detect the leaked gas. Of course, an alarm (not shown in the figure) connected to the detection unit 22 can also be installed on the bottom surface of the fixing plate 1. When gas leaks, this structure can detect and give an alarm in time. The sensor for detecting gas and the corresponding alarm are common components on the market, and their working principles will not be elaborated here.

[0031] As the usage time increases, lampblack and dust will clog the filter screen 402. In order to facilitate the replacement of the filter screen 402, in this solution, a storage box 5 and a feeding box 6 are rotatably connected to the outer peripheral wall of the box body 2. An insertion and connection component matching with the frame body 4 is arranged inside the box body 2 at the inner side of the through groove. When the frame body 4 is pushed into the storage box 5 through the insertion and connection component, the frame body 4 matching with the insertion and connection component can stay in the storage box 5. When the empty insertion and connection component is inserted into the feeding box 6, the frame body 4 at the forefront inside the feeding box 6 can be clamped with the insertion and connection component, so that one frame body 4 inside the feeding box 6 can be brought into the through groove during the retraction process of the insertion and connection component. By this method, it is beneficial to replace the filter screen 402 in the through groove.

[0032] As Figures 1-10 shown, the above-mentioned insertion and connection component includes two insertion rods 3 arranged at the through groove. The two insertion rods 3 are distributed at both sides inside the through groove. The frame body 4 is provided with insertion holes matching with the insertion rods 3, so that the insertion rods 3 can pass through the insertion holes. A limiting block 18 is elastically connected to the outer peripheral surface of the insertion rod 3. One end of the limiting block 18 away from the insertion rod 3 is an arc surface 1801. An annular groove 401 is formed on the inner wall of the above-mentioned insertion hole. During actual use, the end with the arc surface 1801 on the limiting block 18 is inserted into the annular groove 401, so that the frame body 4 can be clamped on the insertion rod 3. And when the pressure between the arc surface 1801 and the side edge of the annular groove 401 increases, one end of the limiting block 18 can move out of the annular groove 401.

[0033] In order to drive the insertion rod 3 to move, a support ring 10 is arranged at the center inside the box body 2 in this solution. A connecting plate 8 is fixedly arranged between the two insertion rods 3 at the same through groove. Refer to Figure 2As shown, a push rod 11 is fixedly provided on one side of the connecting plate 8 close to the support ring 10, and two pressure blocks 12 are fixedly installed on the outer peripheral wall of the support ring 10. The cross-section of the pressure block 12 is triangular, that is, both side surfaces of the pressure block 12 are inclined and recorded as extrusion surfaces 1201. The push rod 11 can be squeezed by the pressure block 12, thereby driving the insertion rod 3 to move outward. A spring is fixedly provided between the end of the connecting plate 8 and the inner wall of the box body 2. Through this structure, when the push rod 11 and the pressure block 12 are offset, the connecting plate 8 can drive the insertion rod 3 to reset.

[0034] In order to drive the storage box 5 and the feeding box 6 to rotate, the present invention provides a ring (not shown in the figure) on the outside of the box body 2 and near the top. The ring rotates with the box body 2, and a first gear ring 15 is fixedly installed on the upper end face of the ring. The storage box 5 and the feeding box 6 are fixed to the ring by bolts, and the storage box 5 and the feeding box 6 are in contact with the outer wall of the box body 2. A first incomplete gear 14 is meshed on the inner side of the first gear ring 15. This structure can drive the ring to rotate, thereby causing the storage box 5 and the feeding box 6 to rotate along the outer wall of the box body 2.

[0035] The top wall and bottom wall of the inner cavity of the storage box 5 are provided with strip-shaped card slots 501, and the card slots 501 are located at both sides of the storage box 5. The top surface and the bottom surface of the frame 4 are elastically connected with card blocks 17. In actual use, the frame 4 installed in the through groove can be driven into the storage box 5 through the cooperation of the limit block 18 and the annular groove 401. When the card block 17 coincides with the card slot 501, the card block 17 can pop out and be inserted into the card slot 501. When the insertion rod 3 is retracted, the frame 4 can be prevented from returning through the cooperation of the card block 17 and the card slot 501, so that the insertion rod 3 can be separated from the frame 4. The top end face of the card block 17 can be provided with a first inclined surface 1701.

[0036] The top wall of the feeding box 6 is provided with an inclined slot 601 at the center. The cross section of the slot 601 is set to be T-shaped. A slider 13 is slidably mounted in the slot 601. The slider 13 is also T-shaped as a whole. Figure 10 As shown, the raised portion at the bottom of the slider 13 is marked as a boss 1301, referring to Figure 8 As shown, the boss 1301 can pass downward through the inclined slot 601 and overlap with the frame 4 in the feeding box 6;

[0037] Further, a plurality of strip-shaped grooves 602 are uniformly formed in a linear array at the top wall of the inclined groove 601, and an insertion block 20 is elastically connected to the top wall of the slider 13. The top of the insertion block 20 is provided with a second inclined surface 2001. When the inclined surface on the insertion block 20 is inserted into the strip-shaped groove 602, the insertion block 20 can only slide downward relative to the inclined groove 601. At one end of the inclined groove 601 on the top wall of the feeding box 6, a stop block 21 is elastically connected. Combining Figure 8 As shown, one side surface of the stop block 21 close to the frame body 4 is inclined, and chamfers 403 are provided at both side edges of the top and both side edges of the bottom of the frame body 4. With this structure, when the slider 13 slides downward along the inclined groove 601, a plurality of frame bodies 4 can be pushed by the slider 13, so that the frontmost frame body 4 can be attached to the stop block 21. The cooperation between the insertion block 20 and the strip-shaped groove 602 can prevent the frame body 4 from sliding backward and resetting. Therefore, when the empty insertion rod 3 is inserted into the insertion hole on the frame body 4, the limit block 18 on the insertion rod 3 can be inserted into the annular groove 401, so that the insertion rod 3 is clamped with the frame body 4. The elastic force between the limit block 18 and the insertion rod 3 is greater than the elastic force between the stop block 21 and the feeding box 6. Therefore, when the insertion rod 3 is retracted, the frame body 4 can cross the stop block 21 through the cooperation between the limit block 18 and the annular groove 401, so that the insertion rod 3 can drive the frontmost frame body 4 in the feeding box 6 into the through groove.

[0038] When there is gas leakage, the leaked gas can enter the box body 2 through the filter screen 402 and be captured by the detection unit 22 in the box body 2. The detection unit 22 can start the alarm, thus playing a reminder effect. When the filter screen 402 needs to be replaced after being used for a period of time, the first incomplete gear 14 can be engaged with the first toothed ring 15 to drive the collar to rotate. The collar can drive the storage box 5 and the feeding box 6 to rotate. When the first incomplete gear 14 is disengaged from the first toothed ring 15, the storage box 5 can be rotated to the through groove and aligned with the through groove. Then, the support ring 10 is rotated, and one of the pressing blocks 12 on the outer wall of the support ring 10 can squeeze the ejector rod 11, thereby driving the connecting plate 8 and the insertion rod 3 to move outward, so that the insertion rod 3 can push the frame body 4 in the through groove into the storage box 5 (the top wall and the bottom wall of the inner cavity of the storage box 5 are respectively flush with the top surface and the bottom surface of the through groove. Similarly, the top wall and the bottom wall of the inner cavity of the feeding box 6 are respectively flush with the top surface and the bottom surface of the through groove). Combining Figures 4-5 As shown, as the frame body 4 is pushed into the storage box 5 by the insertion rod 3, the latch 17 on the frame body 4 can be aligned with the card slot 501. When the latch 17 pops out and is inserted into the card slot 501, the cooperation between the latch 17 and the card slot 501 can prevent the frame body 4 entering the storage box 5 from resetting. At this time, when the insertion rod 3 is retracted into the box body 2, the limit block 18 can be removed from the annular groove 401, so that the insertion rod 3 is separated from the frame body 4;

[0039] Afterwards, stop driving the support ring 10 to rotate and drive the sleeve ring to rotate again through the first incomplete gear 14 meshing with the first gear ring 15. When the first incomplete gear 14 is disengaged from the first gear ring 15 again, the feed box 6 is aligned with the through slot. According to the above analysis, when the feed box 6 remains stable, drive the support ring 10 to rotate again, so that another pressure block 12 on the support ring 10 squeezes the push rod 11, thereby driving the insertion rod 3 to move outward. When the insertion rod 3 is inserted into the interior of the feed box 6, one end of the insertion rod 3 can be inserted into the insertion hole. Through the cooperation of the insertion block 20 and the strip groove 602, the slider 13 and the multiple frames 4 inside the feed box 6 can be prevented from moving outward. Therefore, the limit block 18 on the insertion rod 3 can be inserted into the annular groove 401 of the frontmost frame 4. When the insertion rod 3 is retracted, the cooperation between the limit block 18 and the annular groove 401 can cause the frame 4 to pass over the block 21 and enter the through groove along with the insertion rod 3. When the front frame 4 passes over the block 21, the second frame 4 in the feeding box 6 can be blocked by the block 21, and the slider 13 slides downward and pushes multiple frames 4, so that the front frame 4 fits with the block 21 for the next use. At this point, the filter 402 that was originally in the through groove and blocked can be pushed into the storage box 5 for storage, and a filter 402 in the feeding box 6 is installed in the through groove. Repeat the above process, and the multiple filters 402 on the box body 2 can be replaced during the rotation of the storage box 5 and the feeding box 6 along the box body 2. After that, the storage box 5 and the feeding box 6 can be removed.

[0040] To summarize, this device, through the arrangement of the insertion rod 3, can push the filter 402 blocked in the through slot into the storage box 5 for storage during the process of inserting the insertion rod 3 into the storage box 5. And in the process of inserting the insertion rod 3 into the feeding box 6, the frontmost frame 4 inside the feeding box 6 can be driven into the through slot through the cooperation of the limit block 18 and the annular groove 401, thereby completing the replacement of the filter 402 in the through slot. Afterwards, the storage box 5 and the feeding box 6 can be removed from the sleeve.

[0041] like Figures 1-10 As shown, an annular sealing plate 101 is fixedly mounted on the bottom surface of the fixed plate 1 , and the sealing plate 101 fits the first gear ring 15 to seal the space between the first gear ring 15 and the fixed plate 1 .

[0042] A suspension rod 23 is fixedly installed between the top end surface of the box body 2 and the fixing plate 1 .

[0043] A circular positioning groove 201 is provided on the inner wall of the box body 2 near the bottom end. A plurality of support rods 7 are fixedly arranged on the bottom surface of the support ring 10, and the bottom ends of the support rods 7 slide in the positioning groove 201 to install the support ring 10. A second gear ring 9 is arranged above the support ring 10, and the second gear ring 9 is fixedly connected to the support ring 10 through an inclined rod. A second incomplete gear 19 is engaged with the outside of the second gear ring 9. The engagement of the second incomplete gear 19 and the second gear ring 9 can drive the support ring 10 to rotate intermittently. In actual use, a first motor is fixedly installed on the bottom surface of the fixing plate 1, and the output shaft of the first motor is connected to the first incomplete gear 14. A second motor can be fixedly installed on the inner wall of the box body 2, and the output shaft of the second motor is connected to the second incomplete gear 19. Through this structure, the sleeve ring and the support ring 10 can be driven to rotate intermittently, so that the insertion rod 3 can cooperate with the storage box 5 and the feeding box 6 alternately. Specifically, when the first incomplete gear 14 disengages from the first gear ring 15, the storage box 5 can be located at the through groove. When the first incomplete gear 14 disengages from the first gear ring 15, the second incomplete gear 19 will gradually engage with the second gear ring 9, thereby driving the support ring 10 to rotate. Similarly, when the second incomplete gear 19 disengages from the second gear ring 9, the first incomplete gear 14 can engage with the first gear ring 15 again, so that the feeding box 6 can be aligned with the through groove. Repeating the above process can replace the filter screens 402 in each through groove. As another implementation manner, both the first incomplete gear 14 and the second incomplete gear 19 can adopt a complete straight gear structure, and the intermittent operation of the first motor and the second motor is used to drive the insertion rod 3 to cooperate with the storage box 5 and the feeding box 6.

[0044] Both the storage box 5 and the feeding box 6 can be set in a "return" shape, and a cover plate 16 is fixedly installed at one end of the storage box 5 and the feeding box 6 away from the box body 2 through bolts. One end of the strip-shaped groove 602 extends to the cover plate 16. Through this structure, it is beneficial to take out the frame body 4 from the storage box 5. A groove that slidably cooperates with the clamping block 17 is provided on the frame body 4, and a first spring is fixedly arranged between the inner end surface of the groove and the clamping block 17. A notch that slidably cooperates with the limiting block 18 is provided on the insertion rod 3, and a second spring is fixedly arranged between the inner end surface of the notch and the limiting block 18.

[0045] An installation groove that slidably cooperates with the insertion block 20 is provided on the top surface of the slider 13, and a limiting spring is fixedly arranged between the inner end surface of the installation groove and the insertion block 20. In actual use, a pull rope can be fixedly installed on the bottom surface of the insertion block 20. The pull rope passes through the slider 13 and slidably cooperates with it, and a pull ring is fixedly installed at one end of the pull rope passing through the slider 13. Through this structure, it is beneficial to drive the slider 13 to reset. A rectangular groove that slidably cooperates with the blocking block 21 is provided on the top wall of the feeding box 6, and the inner end surface of the rectangular groove and the blocking block 21 are fixedly connected through a third spring.

Claims

1. A gas leak alarm device, comprising a fixing plate, an annular box body is installed below the fixing plate, a plurality of through grooves are evenly opened on the outer peripheral wall of the box body, and a frame body is installed in the through grooves, a filter screen is fixedly arranged in the frame body, and a detection unit is installed on the bottom surface of the fixing plate, characterized in that: The storage box and the feeding box are rotatably connected to the outer peripheral wall of the box body, and a plug-in assembly matching with the frame body is arranged inside the through slot of the box body; When the plug-in component pushes the frame to move into the storage box, the frame that cooperates with the plug-in component can be retained in the storage box. When the unloaded plug-in component is inserted into the feeding box, the frame located in the front of the feeding box can be engaged with the plug-in component, so that a frame inside the feeding box can be brought into the through slot during the retraction of the plug-in component.

2. A gas leak alarm device according to claim 1, characterized in that: The plug-in assembly includes two plug rods arranged at the through groove, the frame is provided with a socket matching the plug rod, a limit block is elastically connected to the outer circumference of the plug rod, the end of the limit block away from the plug rod is an arc surface, and an annular groove is provided on the inner wall of the socket. When the end of the limit block with the arc surface is inserted into the annular groove, the frame can be snapped onto the plug rod.

3. A gas leak alarm device according to claim 2, characterized in that: The top wall and the bottom wall of the inner cavity of the storage box are both provided with card slots, and the top surface and the bottom surface of the frame are both elastically connected with card blocks.

4. A gas leak alarm device according to claim 3, characterized in that: An inclined slot is provided on the inner top wall of the feeding box at the center, and the cross section of the slot is T-shaped. A slider is slidably installed in the slot, and the slider is T-shaped as a whole. The raised part at the bottom of the slider is called a boss, which passes downward through the slot and overlaps with the frame in the feeding box on the horizontal plane.

5. A gas leak alarm device according to claim 4, characterized in that: A plurality of strip grooves are evenly arranged on the top wall of the inclined groove, an insert block is elastically connected to the top wall of the slider, the top of the insert block is arranged as a second inclined surface, a stop block is elastically connected to the top wall of the feeding box on one side of the inclined groove, the stop block is inclinedly arranged on a side close to the frame, and chamfers are arranged on both side edges of the top of the frame and on both side edges of the bottom of the frame.

6. A gas leak alarm device according to claim 3, characterized in that: The card slot is located on the inner wall of the storage box and close to the two sides.

7. A gas leak alarm device according to claim 1, characterized in that: A suspension rod is fixedly installed between the top end surface of the box body and the fixing plate.

8. A gas leak alarm device according to claim 1, characterized in that: The storage box and the feeding box are both arranged in a "U" shape, and a cover plate is fixedly installed on one end of the storage box and the feeding box away from the box body by bolts.

9. A gas leak alarm device according to claim 5, characterized in that: The top surface of the slider is provided with an installation groove that slidably cooperates with the plug block, a limit spring is fixedly arranged between the inner end surface of the installation groove and the plug block, the bottom surface of the plug block is fixedly connected with a pull rope, the pull rope passes through the slider and slidably cooperates with it, and a pull ring is fixedly installed on one end of the pull rope that passes through the slider.

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