A marine engine room fire alarm device

Abstract

The application discloses a kind of ship engine room fire alarm device, it is related to ship fire alarm technical field, including smoke detection equipment and fire alarm mechanism, the fire alarm mechanism includes negative pressure equipment, fine filter, oil mist filter, sampling main pipe, adapter, sampling branch pipe and sampling box;Through the fire alarm mechanism of being set, negative pressure equipment, sampling main pipe, adapter, sampling branch pipe and sampling box are used in cooperation, so that negative pressure equipment is in real time to the inside of ship engine room is extracted gas in all directions, so that the air sample of fire alarm mechanism can forcibly capture each dead angle of engine room, not by the influence of engine room strong ventilation turbulent flow field, effectively solve the problem that low concentration smoke is blown away, dilution at the initial stage of fire, passive probe cannot be reached, realize the rapid capture of smoke, gain sufficient time for fire disposal, avoid fire spread, improve the use effect of fire alarm device, effectively protect ship engine room and personnel.

Description

Technical Field

[0001] This invention belongs to the field of ship fire alarm technology, specifically a ship engine room fire alarm device. Background Technology

[0002] In short, a ship is a waterborne Transformer that humans have conquered. It is a means of transportation that uses the buoyancy of water and relies on sails, engines, or human power to navigate, anchor, and carry out transportation or operations in waterways. The ship's engine room is a dedicated enclosed compartment on board where the main propulsion, power generation, and various auxiliary mechanical systems are centrally located. It is also the core area for the daily duty, operation, and maintenance of the engine room personnel. A fire alarm device typically refers to a collection of equipment in an automatic fire alarm system used to receive, display, and transmit fire alarm signals, and can also issue control signals, possessing certain auxiliary indication / control functions. The ship's engine room is the area with the highest fire risk and the most dangerous area on the entire ship. Once a fire breaks out, it is extremely easy to get out of control. Therefore, a ship engine room fire alarm device is needed.

[0003] Existing fire alarm systems for ship engine rooms are typically installed on the top of the engine room and use sensors to detect smoke, thus alerting personnel to the occurrence of a fire. However, the smoke generated in the early stages of a fire is often irregular, and there is usually strong wind in the engine room, which easily disperses and dilutes the smoke. This causes the smoke concentration to drop rapidly below the sensor detection threshold, making it difficult for the sensors to detect smoke in the early stages of a fire. This significantly prolongs the sensor's detection response time, causing the best opportunity to deal with the fire to be missed. As a result, the fire can quickly develop from the smoldering stage to the open flame stage, causing damage to engine room equipment, casualties, and ship safety accidents. This reduces the effectiveness of the fire alarm system for ship engine rooms and fails to meet people's needs. Summary of the Invention

[0004] The present invention aims to solve the technical problems existing in the prior art; to this end, the present invention proposes a fire alarm device for ship engine room.

[0005] A fire alarm device for a ship's engine room includes a smoke detection device detachably mounted on the top of the engine room and a fire alarm mechanism connected to the smoke detection device. The fire alarm mechanism includes a negative pressure device connected to the smoke detection device and a fine filter located at the front end of the negative pressure device. The smoke detection device detects smoke using laser scattering detection. An alarm is connected to the smoke detection device, and the smoke detection device can be set with an alarm threshold. The fire alarm mechanism also includes an oil mist filter connected to the fine filter, which specifically intercepts fine oil mist particles to prevent oil mist from entering the smoke detection device. The fire alarm mechanism also includes a sampling main pipe connected to the oil mist filter and... The sampling main pipe is connected to an adapter and several sampling branch pipes installed on the adapter. A sampling box is installed at one end of each sampling branch pipe. The smoke detection device, fine filter, oil mist filter, sampling branch pipes, and sampling box are all installed on the top of the engine room through shock-absorbing fasteners. The sampling main pipe, adapter, and sampling branch pipes form a sampling network to perform all-round sampling of the ship's engine room. The negative pressure device adopts a low-power standby and dynamic pressurization operation mode. Under normal conditions, the main pump operates at low power in real time to maintain the minimum effective negative pressure in the sampling network. When a trace amount of smoke is captured or the negative pressure of the sampling network is insufficient, the pump power is automatically increased to increase the negative pressure, which ensures detection sensitivity and reduces ineffective losses.

[0006] As a further aspect of the present invention: the fire alarm mechanism further includes a filter assembly disposed in the sampling box for preliminary treatment of the gas entering the sampling pipeline. The filter assembly prevents large particulate impurities from affecting the fine filter and oil mist filter, thereby reducing the service life of the fine filter and oil mist filter. The filter assembly includes a connecting seat disposed on the inner wall of the sampling box, a fixing ring disposed on the outer wall of the sampling box for fixing the sampling branch pipe, and a filter cover movably disposed on the connecting seat. The sampling box has a sampling port and a sampling chamber inside. One end of the sampling branch pipe passes through the connecting seat and extends into the filter cover. The filter cover has a rotating ring that rotates in contact with the connecting seat. A cleaning scraper is vertically installed on the inner wall of the sampling box and fits against the outer wall of the filter cover, so that when the filter cover rotates, it cleans the impurities adhering to the filter cover and extends the service life of the filter cover.

[0007] As a further aspect of the present invention: the filter assembly further includes a connecting ring mounted on the rotating ring and fitting against the connecting seat, and a first rotating external gear ring disposed on the connecting ring. Both the connecting ring and the first rotating external gear ring are coaxially connected to the filter cover. The filter assembly further includes a first rotating gear rotatably disposed in the connecting seat and meshing with the first rotating external gear ring, and a drive motor detachably mounted on the outer wall of the connecting seat and connected to the first rotating gear. The drive motor controls the first rotating external gear ring to rotate through the first rotating gear, thereby causing the filter cover to rotate on the connecting seat.

[0008] As a further aspect of the present invention: the fire alarm mechanism further includes a cleaning component for cleaning the cleaning scraper. The cleaning component can reduce the adhesion of impurities to the cleaning scraper and reduce the impact on the cleaning scraper. The cleaning component includes a movable block movably disposed on the lower end face of the cleaning scraper and scrapers symmetrically disposed on the movable block. The scrapers are L-shaped and fit against the outer wall of the cleaning scraper. The cleaning component also includes a first screw drive structure installed inside the cleaning scraper and movable parts symmetrically disposed on the first screw drive structure. One end of the movable part is fixedly connected to the movable block. The cleaning scraper has a movable groove that fits against the movable part.

[0009] As a further aspect of the present invention: the fire alarm mechanism further includes a first transmission rod rotatably disposed inside the connecting seat and coaxially connected to the first lead screw transmission structure, and a drive gear coaxially connected to the first transmission rod. A first transmission gear is coaxially mounted on one end of the first rotating gear. The first transmission gear meshes with the drive gear. The diameter of the drive gear is smaller than the diameter of the first transmission gear, so that the first rotating gear controls the first lead screw transmission structure to work through the first transmission gear and the drive gear.

[0010] As a further aspect of the present invention: the sampling box has a feeding trough inside that communicates with the sampling chamber, and the bottom of the sampling box has a connecting pipe that communicates with the feeding trough. The fire alarm mechanism also includes a collection component that is sealed and connected to the connecting pipe. The collection component includes a connector that is threadedly fixed to the connecting pipe and a collection box that is integrally connected to the connector. The collection box can collect impurities in the feeding trough, preventing the cleaned impurities from falling into the ship's engine room and requiring manual cleaning by staff.

[0011] As a further aspect of the present invention: the collection assembly further includes a compression ring installed on the upper end of the collection box and disposed outside the connector, and a lifting block movably disposed at the bottom end of the sampling box and symmetrical to the compression ring. A weight block is installed at the bottom end of the lifting block. The collection assembly also includes a plurality of first blocking blocks arranged in a circular array and movably disposed inside the sampling box to block or open the feeding chute. One end of the first blocking block is provided with a second screw drive structure that works in conjunction with the lifting block. When the lifting block moves, the first blocking block is controlled to move through the second screw drive structure.

[0012] As a further aspect of the present invention: the collection assembly further includes a second transmission rod coaxially connected to the second lead screw transmission structure and a lifting gear disposed at one end of the second transmission rod. The lifting block is provided with a lifting groove for use with the second transmission rod and the lifting gear. A lifting rack that meshes with the lifting gear is installed in the lifting groove. When the collection box is installed on the sampling box, the compression ring controls the lifting block to move through the weight block, so that the lifting rack controls the second lead screw transmission structure to work through the lifting gear and the second transmission rod, thereby causing several first sealing blocks to open the discharge chute, so that the collection box and the sampling box are connected.

[0013] As a further aspect of the present invention, the collection assembly further includes guide grooves symmetrically formed on the rear side of the lifting block and guide blocks movably disposed in the guide grooves, wherein the guide blocks are fixedly connected to the sampling box.

[0014] As a further aspect of the present invention: the fire alarm mechanism further includes a blocking component disposed inside the sampling box to block or open the feeding trough. The blocking component includes a plurality of second blocking blocks arranged in a circular array and a blocking seat disposed on the lower side of the second blocking blocks. The blocking seat has a ring structure and is disposed above the first blocking block. The blocking seat is coaxially disposed with the feeding trough. The second blocking blocks are movably disposed on the blocking seat and can block or open the feeding trough.

[0015] As a further aspect of the present invention: the blocking assembly further includes several moving strips arranged in a circular array inside the sampling box and moving gears for controlling the movement of the moving strips. The upper end face of the moving strip is fixed to the lower end face of the second blocking block. The lower end face of the moving strip is provided with a moving groove that matches the moving gear. A moving rack that meshes with the moving gear is provided in the moving groove. The second blocking block and the moving strip are both offset from the lifting block.

[0016] As a further aspect of the present invention: the sealing assembly further includes a second transmission gear coaxially connected to the moving gear and a transmission gear ring disposed on the inner wall of the sealing seat. The second transmission gear is provided with a transmission block coaxially connected to the moving gear. The sealing assembly further includes a second rotating external gear ring disposed on the outer wall of the sealing seat and a second rotating gear rotatably disposed in the sampling box and meshing with the second rotating external gear ring. The second rotating gear is aligned with the sealing seat and causes the sealing seat to rotate. The sealing seat is coaxially provided with a plurality of rotating guide members that are guided and connected to the sampling box. The sampling box is provided with rotating guide grooves that match the rotating guide members.

[0017] The sealing assembly also includes a bevel gear structure coaxially connected to the second rotating gear and a third transmission rod coaxially connected to the bevel gear structure. One end of the third transmission rod is connected to a synchronous belt structure. The sampling box has a synchronous groove for the synchronous belt structure to operate. One end of the synchronous belt structure is provided with a third transmission gear that meshes with the first rotating gear via a connecting rod. The third transmission gear is rotatably disposed in the sampling box and aligned with the first rotating gear, so that the first rotating gear controls the filter cover to be cleaned by the cleaning scraper, and controls the second sealing block to open the discharge chute through the third transmission gear and the synchronous belt structure, so that the cleaned impurities enter the collection box.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] (1) The present invention, through the use of a fire alarm mechanism, negative pressure equipment, sampling main pipe, adapter, sampling branch pipe and sampling box, enables the negative pressure equipment to extract gas from the engine room of the ship in real time from all directions. The fine filter and oil mist filter filter the sampled gas and remove oil mist. The smoke detection equipment detects smoke in the treated gas. This allows the fire alarm mechanism to forcibly capture air samples from all dead corners of the engine room, unaffected by the strong ventilation turbulence flow field of the engine room. It effectively solves the problem that low concentration smoke is blown away and diluted in the early stage of a fire and cannot reach the passive probe. It achieves rapid smoke capture, buys enough time for fire disposal, avoids the spread of fire, improves the effectiveness of the fire alarm device, and effectively protects the ship's engine room and personnel.

[0020] (2) The present invention, through the setting of filter components and cleaning components, the connecting seat, the fixing ring and the filter cover can remove impurities from the sampled gas, thereby improving the detection effect of the smoke detection device. The rotating ring, the cleaning scraper, the connecting ring, the first rotating external toothed ring, the first rotating gear and the drive motor work together to clean the filter cover of impurities, thereby extending the service life of the filter cover. Through the setting of moving block, scraper, first lead screw transmission structure, moving part, first transmission rod, drive gear and first transmission gear, working together with the first rotating gear, the cleaning scraper can be cleaned, thereby improving the cleaning effect of the cleaning scraper, avoiding secondary pollution of the filter cover by impurities, and improving the use effect of the fire alarm device.

[0021] (3) The present invention uses a combination of a sealing component and a collection component, a feeding trough, a connecting pipe, a connector, a squeezing ring, a lifting block, and a weighting block to install the collection box and the sampling box. The collection box and the sampling box work together through the first sealing block, the second screw transmission structure, the second transmission rod, the lifting gear, the lifting rack, and the guide block. When fixed, the two are connected. When disassembled, the sampling box is closed. The second sealing block and the first rotating gear work together through the sealing seat, the moving strip, the moving gear, the moving rack, the second transmission gear, the transmission gear ring, the second rotating external gear ring, the second rotating gear, the rotating guide, the bevel gear structure, the third transmission rod, the synchronous belt structure, and the third transmission gear. When cleaning the filter cover, the impurities are introduced into the collection box. When sampling the gas, the collection box is closed to prevent the impurities in the collection box from being sucked out, thus improving the effectiveness of the fire alarm device. Attached Figure Description

[0022] Figure 1 This is an overall structural diagram of the present invention.

[0023] Figure 2 This is a cross-sectional view of the sampling box and the collection box in this invention.

[0024] Figure 3 This is a partial structural diagram of the filter component and the cleaning component in this invention.

[0025] Figure 4 This is a partial structural diagram of the cleaning component and the collection component in this invention.

[0026] Figure 5 This is a partial structural diagram of the sealing component and the collection component in this invention.

[0027] Figure 6 This is a partial structural diagram of the cleaning scraper and the first transmission gear in this invention.

[0028] Figure 7 This is a partial structural diagram of the extrusion ring and the first sealing block in this invention.

[0029] Figure 8 This is a partial structural diagram of the connector and the first sealing block in this invention.

[0030] Figure 9 In this invention Figure 8 Enlarged view of the structure at point A in the middle.

[0031] Figure 10 This is a partial structural diagram of the second sealing block and the third transmission gear in this invention.

[0032] Figure 11 In this invention Figure 10 Enlarged view of the structure at point B.

[0033] In the diagram: 1. Smoke detection equipment; 2. Negative pressure equipment; 3. Fine filter; 4. Oil mist filter; 5. Sampling main pipe; 6. Adapter; 7. Sampling branch pipe; 8. Sampling box; 9. Connecting seat; 10. Fixing ring; 11. Filter cover; 12. Rotating ring; 13. Cleaning scraper; 14. Connecting ring; 15. First rotating external gear ring; 16. First rotating gear; 17. Drive motor; 18. Moving block; 19. Scraper; 20. First lead screw transmission structure; 21. Moving part; 22. First transmission rod; 23. Drive gear; 24. First transmission gear; 25. Feed chute; 26. Connecting pipe; 27. Connecting... 28. Connector; 29. ​​Collection box; 30. Compression ring; 31. Lifting block; 32. Weight block; 33. First sealing block; 34. Second lead screw transmission structure; 35. Second transmission rod; 36. Lifting gear; 37. Lifting rack; 38. Guide block; 39. Second sealing block; 40. Sealing seat; 41. Moving bar; 42. Moving gear; 43. Moving rack; 44. Second transmission gear; 45. Transmission gear ring; 46. Second rotating external gear ring; 47. Second rotating gear; 48. Rotating guide; 49. Bevel gear structure; 50. Third transmission rod; 51. Synchronous belt structure; 52. Third transmission gear. Detailed Implementation

[0034] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1

[0036] Please see Figure 1 - Figure 6This application provides a fire alarm device for a ship's engine room, including a smoke detection device 1 detachably mounted on the top of the engine room and a fire alarm mechanism connected to the smoke detection device 1. The fire alarm mechanism includes a negative pressure device 2 connected to the smoke detection device 1 and a fine filter 3 disposed at the front end of the negative pressure device 2. The smoke detection device 1 detects smoke using laser scattering detection. An alarm is connected to the smoke detection device 1, and the smoke detection device 1 can be set with an alarm threshold. The fire alarm mechanism also includes an oil mist filter 4 connected to the fine filter 3. The oil mist filter 4 is specifically designed to intercept fine oil mist particles to prevent oil mist from entering the smoke detection device 1. The fire alarm mechanism also includes a sampling main pipe 5 connected to the oil mist filter 4. The main sampling pipe 5 is connected to the adapter 6 and several sampling branch pipes 7 are installed on the adapter 6. A sampling box 8 is installed at one end of the sampling branch pipe 7. The smoke detection device 1, fine filter 3, oil mist filter 4, sampling branch pipe 7 and sampling box 8 are all installed on the top of the engine room through shock-absorbing fasteners. The main sampling pipe 5, adapter 6 and sampling branch pipe 7 form a sampling network to conduct all-round sampling of the ship's engine room. The negative pressure device 2 adopts a low-power standby and dynamic pressurization operation mode. Under normal conditions, the main pump operates at low power in real time to maintain the minimum effective negative pressure in the sampling network. When a trace amount of smoke is captured or the negative pressure of the sampling network is insufficient, the pump power is automatically increased and the negative pressure is increased, which ensures the detection sensitivity and reduces ineffective losses.

[0037] In this embodiment, the negative pressure device 2 is activated, causing the sampling pipe 7 to draw in air for sampling. The gas then passes through the sampling box 8 and the sampling pipe 7 into the sampling main pipe 5. The gas then enters the oil mist filter 4 to remove the oil mist from the gas, and then enters the fine filter 3 to filter out fine particles. The filtered gas is then introduced into the smoke detection device 1 through the negative pressure device 2 for detection. If the smoke content in the gas meets the standard, the alarm will sound.

[0038] The fire alarm mechanism of this invention also includes a filter assembly disposed in the sampling box 8 to perform preliminary treatment on the gas entering the sampling pipeline. The filter assembly prevents large particulate impurities from affecting the fine filter 3 and the oil mist filter 4, thereby reducing the service life of the fine filter 3 and the oil mist filter 4. The filter assembly includes a connecting seat 9 disposed on the inner wall of the sampling box 8, a fixing ring 10 disposed on the outer wall of the sampling box 8 to fix the sampling branch pipe 7, and a filter cover 11 movably disposed on the connecting seat 9. The sampling box 8 has a sampling port and a sampling chamber inside. One end of the sampling branch pipe 7 passes through the connecting seat 9 and extends into the filter cover 11. The filter cover 11 is provided with a rotating ring 12 that rotates in contact with the connecting seat 9. A cleaning scraper 13 that is in contact with the outer wall of the filter cover 11 is vertically installed on the inner wall of the sampling box 8, so that when the filter cover 11 rotates, it cleans the impurities adhering to the filter cover 11, thereby extending the service life of the filter cover 11.

[0039] In this embodiment, when the sampling pipe 7 samples gas, the filter cover 11 filters impurities from the sampled gas. Every certain period of time, the rotating ring 12 is controlled to rotate, causing the rotating ring 12 to drive the filter cover 11 to rotate. The filter cover 11 is in contact with the cleaning scraper 13, so that the cleaning scraper 13 cleans the filter cover 11.

[0040] The filter assembly of the present invention further includes a connecting ring 14 mounted on the rotating ring 12 and fitting against the connecting seat 9, and a first rotating external gear ring 15 disposed on the connecting ring 14. Both the connecting ring 14 and the first rotating external gear ring 15 are coaxially connected to the filter cover 11. The filter assembly also includes a first rotating gear 16 rotatably disposed in the connecting seat 9 and meshing with the first rotating external gear ring 15, and a drive motor 17 detachably mounted on the outer wall of the connecting seat 9 and connected to the first rotating gear 16. The drive motor 17 controls the first rotating external gear ring 15 to rotate through the first rotating gear 16, thereby causing the filter cover 11 to rotate on the connecting seat 9.

[0041] In this embodiment, the drive motor 17 is started, which drives the first rotating gear 16 to rotate, so that the first rotating gear 16 drives the first rotating external gear ring 15 to rotate, the first rotating external gear ring 15 drives the connecting ring 14 to rotate, so that the connecting ring 14 drives the rotating ring 12 to rotate, and the rotating ring 12 drives the filter cover 11 to rotate.

[0042] The fire alarm mechanism of the present invention also includes a cleaning component for cleaning the cleaning scraper 13. The cleaning component can reduce the adhesion of impurities to the cleaning scraper 13 and reduce the impact on the cleaning scraper 13. The cleaning component includes a movable block 18 movably disposed on the lower end face of the cleaning scraper 13 and scrapers 19 symmetrically disposed on the movable block 18. The scrapers 19 are L-shaped and fit against the outer wall of the cleaning scraper 13. The cleaning component also includes a first lead screw transmission structure 20 installed inside the cleaning scraper 13 and a movable component 21 symmetrically disposed on the first lead screw transmission structure 20. One end of the movable component 21 is fixedly connected to the movable block 18. A movable groove that fits against the movable component 21 is provided on the cleaning scraper 13.

[0043] In this embodiment, when the first lead screw transmission structure 20 is working, the first lead screw transmission structure 20 drives the moving part 21 to move in the moving groove, the moving part 21 drives the moving block 18 to move on the cleaning scraper 13, and the moving block 18 drives the scraper 19 to move. During the movement, the scraper 19 cleans the impurities adhering to the cleaning scraper 13 and causes the cleaned impurities to fall off.

[0044] The fire alarm mechanism of the present invention further includes a first transmission rod 22 rotatably disposed inside the connecting seat 9 and coaxially connected to the first lead screw transmission structure 20, and a drive gear 23 coaxially connected to the first transmission rod 22. A first transmission gear 24 is coaxially mounted on one end of the first rotating gear 16. The first transmission gear 24 meshes with the drive gear 23. The diameter of the drive gear 23 is smaller than the diameter of the first transmission gear 24, so that the first rotating gear 16 controls the first lead screw transmission structure 20 to work through the first transmission gear 24 and the drive gear 23.

[0045] In this embodiment, the drive motor 17 is started, which drives the first rotating gear 16 to rotate, so that the first rotating gear 16 drives the first transmission gear 24 to rotate, the first transmission gear 24 drives the drive gear 23 to rotate, so that the drive gear 23 drives the first transmission rod 22 to rotate, and the first transmission rod 22 drives the first lead screw transmission structure 20 to work.

[0046] Example 2

[0047] Based on Example 1, referring to Figure 3 - Figure 9 This is the second embodiment of the present invention. In this embodiment, the sampling box 8 is provided with a feeding trough 25 communicating with the sampling chamber. The bottom end of the sampling box 8 is provided with a connecting pipe 26 communicating with the feeding trough 25. The fire alarm mechanism also includes a collection component that is sealed and connected to the connecting pipe 26. The collection component includes a connector 27 that is threadedly fixed to the connecting pipe 26 and a collection box 28 that is integrally connected to the connector 27. The collection box 28 can collect the impurities in the feeding trough 25 to prevent the cleaned impurities from falling into the ship's engine room and requiring manual cleaning by the staff.

[0048] In this embodiment, when the cleaned-up impurities fall into the feeding trough 25 and enter the connecting pipe 26 through the feeding trough 25, the connecting pipe 26 guides the impurities into the collection box 28 for collection.

[0049] The collection assembly of the present invention also includes a compression ring 29 installed on the upper end of the collection box 28 and disposed outside the connector 27, and a lifting block 30 movably disposed at the bottom end of the sampling box 8 and symmetrical to the compression ring 29. A weight block 31 is installed at the bottom end of the lifting block 30. The collection assembly also includes a plurality of first blocking blocks 32 arranged in a circular array inside the sampling box 8 to block or open the discharge chute 25. One end of the first blocking block 32 is provided with a second screw drive structure 33 that works in conjunction with the lifting block 30. When the lifting block 30 moves, the first blocking block 32 is controlled to move by the second screw drive structure 33.

[0050] In this embodiment, the collection box 28 is installed on the sampling box 8, the connector 27 is installed on the connecting pipe 26, and the extrusion ring 29 moves upward, so that the extrusion ring 29 extrudes several weight blocks 31 synchronously, so that the weight blocks 31 drive the lifting block 30 to move upward, and the lifting block 30 controls the second screw transmission structure 33 to work, so that the second screw transmission structure 33 drives the first sealing block 32 to move, so that several first sealing blocks 32 open the discharge chute 25, so that the collection box 28 and the sampling box 8 are connected.

[0051] The collection assembly of this invention also includes a second transmission rod 34 coaxially connected to the second lead screw transmission structure 33 and a lifting gear 35 disposed at one end of the second transmission rod 34. The lifting block 30 is provided with a lifting groove that cooperates with the second transmission rod 34 and the lifting gear 35. A lifting rack 36 that meshes with the lifting gear 35 is installed in the lifting groove. When the collection box 28 is installed on the sampling box 8, the squeezing ring 29 controls the lifting block 30 to move through the weight block 31, so that the lifting rack 36 controls the second lead screw transmission structure 33 to work through the lifting gear 35 and the second transmission rod 34, thereby causing several first sealing blocks 32 to open the discharge chute 25, so that the collection box 28 is connected to the sampling box 8.

[0052] In this embodiment, when the lifting block 30 moves, it causes the lifting rack 36 to move, which in turn causes the lifting gear 35 to rotate. The lifting gear 35 then causes the second transmission rod 34 to rotate, which in turn causes the second transmission rod 34 to drive the second lead screw transmission structure 33 to work. This causes the second lead screw transmission structure 33 to drive the first sealing block 32 to move, so that the multiple first sealing blocks 32 open or close the feeding chute 25.

[0053] The collection component of this invention also includes guide grooves symmetrically formed on the rear side of the lifting block 30 and guide blocks 37 movably disposed in the guide grooves, with the guide blocks 37 fixedly connected to the sampling box 8.

[0054] In this embodiment, when the lifting block 30 moves, the guide block 37 moves up and down in the guide groove.

[0055] Example 3

[0056] Based on Example 2, referring to Figure 3 - Figure 11This is the third embodiment of the present invention. In this embodiment, the fire alarm mechanism further includes a blocking component disposed inside the sampling box 8 to block or open the feeding trough 25. The blocking component includes a plurality of second blocking blocks 38 arranged in a circular array and a blocking seat 39 disposed on the lower side of the second blocking blocks 38. The blocking seat 39 has a ring structure and is disposed above the first blocking block 32. The blocking seat 39 is coaxially disposed with the feeding trough 25. The second blocking blocks 38 are movably disposed on the blocking seat 39 and can block or open the feeding trough 25.

[0057] In this embodiment, when several second sealing blocks 38 block the discharge trough 25, the collection box 28 and the sampling box 8 are sealed and separated, so that the sampling pipe 7 will not generate negative pressure on the impurities in the collection box 28, thereby preventing the impurities collected in the collection box 28 from being sucked out again. When the sampling pipe 7 does not generate negative pressure, the several second sealing blocks 38 open the discharge trough 25, so that the collection box 28 and the sampling box 8 are connected, and the cleaned impurities are introduced into the collection box 28.

[0058] The sealing assembly of the present invention also includes several movable bars 40 arranged in a circular array inside the sampling box 8 and movable gears 41 for controlling the movement of the movable bars 40. The upper end face of the movable bar 40 is fixed to the lower end face of the second sealing block 38. The lower end face of the movable bar 40 is provided with a movable groove that matches the movable gear 41. A movable rack 42 that meshes with the movable gear 41 is provided in the movable groove. The second sealing block 38 and the movable bars 40 are both offset from the lifting block 30.

[0059] In this embodiment, when the moving gear 41 rotates, it causes the moving gear 41 to drive the moving rack 42 to move, the moving rack 42 to drive the moving bar 40 to move, and the moving bar 40 to drive the second sealing block 38 to move, so that a plurality of second sealing blocks 38 block or open the feeding trough 25.

[0060] The sealing assembly of the present invention further includes a second transmission gear 43 coaxially connected to the moving gear 41 and a transmission gear ring 44 disposed on the inner wall of the sealing seat 39. The second transmission gear 43 is provided with a transmission block coaxially connected to the moving gear 41. The sealing assembly also includes a second rotating external gear ring 45 disposed on the outer wall of the sealing seat 39 and a second rotating gear 46 rotatably disposed in the sampling box 8 and meshing with the second rotating external gear ring 45. The second rotating gear 46 is aligned with the sealing seat 39 and causes the sealing seat 39 to rotate. The sealing seat 39 is coaxially provided with a plurality of rotating guide members 47 that are guided and connected to the sampling box 8. The sampling box 8 is provided with a rotating guide groove that matches the rotating guide member 47.

[0061] In this embodiment, when the second rotating gear 46 rotates, it causes the second rotating external gear ring 45 to rotate, which in turn causes the sealing seat 39 to rotate. The sealing seat 39 then causes the rotating guide member 47 to rotate in the rotating guide groove, which in turn causes the sealing seat 39 to rotate the transmission gear ring 44. This causes the transmission gear ring 44 to rotate the second transmission gear 43, which in turn causes the transmission block to rotate, and the transmission block causes the moving gear 41 to rotate.

[0062] The sealing assembly of this invention also includes a bevel gear structure 48 coaxially connected to the second rotating gear 46 and a third transmission rod 49 coaxially connected to the bevel gear structure 48. One end of the third transmission rod 49 is connected to a synchronous belt structure 50. A synchronous groove for the synchronous belt structure 50 to work is provided in the sampling box 8. One end of the synchronous belt structure 50 is provided with a third transmission gear 51 that meshes with the first rotating gear 16 through a connecting rod. The third transmission gear 51 is rotatably arranged in the sampling box 8 and aligned with the first rotating gear 16. When the first rotating gear 16 controls the filter cover 11 to be cleaned by the cleaning scraper 13, it controls the second sealing block 38 to open the discharge chute 25 through the third transmission gear 51 and the synchronous belt structure 50, so that the cleaned impurities enter the collection box 28.

[0063] In this embodiment, when the first rotating gear 16 rotates, it drives the third transmission gear 51 to rotate, the third transmission gear 51 drives the connecting rod to rotate, the connecting rod drives the synchronous belt structure 50 to work, the synchronous belt structure 50 drives the third transmission rod 49 to rotate, the third transmission rod 49 drives the bevel gear structure 48 to rotate, and the bevel gear structure 48 drives the second rotating gear 46 to rotate.

[0064] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A fire alarm device for a ship's engine room, characterized in that, include: The smoke detection equipment is connected to the oil mist filter via a fine filter; The sampling main pipe has one end connected to the oil mist filter, and the other end of the sampling main pipe is provided with several sampling branch pipes via an adapter. A sampling box, wherein the inner wall of the sampling box is provided with a filter cover that is inserted into the sampling tube via a connecting seat, and the filter cover is rotatably mounted on the connecting seat via a fixing ring; The cleaning scraper is vertically mounted on the inner wall of the sampling box and fits against the outer wall of the filter cover; The first rotating external gear ring is rotatably disposed inside the connecting seat. The first rotating external gear ring is connected to the fixed ring through the connecting ring. The connecting seat is provided with a first rotating gear for controlling the rotation of the first rotating external gear ring.

2. A ship engine room fire alarm device according to claim 1, characterized in that, A drive motor coaxially connected to the first rotating gear is mounted on the outer side of the connecting seat. The lower end face of the cleaning scraper is movably provided with a moving block; The movable block is symmetrically equipped with scrapers that fit against the outer surface of the cleaning scraper; The cleaning scraper is internally equipped with a first lead screw drive structure that controls the scraper to clean the cleaning scraper. The first lead screw transmission structure is symmetrically provided with movable parts that are fixedly connected to the movable block.

3. A ship engine room fire alarm device according to claim 2, characterized in that, The connecting seat is provided with a first transmission rod that is coaxially connected to the first lead screw transmission structure. One end of the first transmission rod is provided with a drive gear; One end of the first rotating gear is coaxially mounted with a first transmission gear. The first transmission gear meshes with the drive gear; The diameter of the drive gear is smaller than that of the first transmission gear.

4. A ship engine room fire alarm device according to claim 1, characterized in that, The sampling box has a material feeding trough on its lower interior side; The bottom of the sampling box is provided with a connecting pipe that communicates with the material discharge trough; A collection box is connected to the lower side of the sampling box; The upper end of the collection box is provided with a connector for fixing with a threaded pipe. The connector is provided with a compression ring on its outer side; The sampling box has a lifting block that is movably provided at the bottom end and aligned with the squeezing ring; A weight block is installed at the bottom of the lifting block; The sampling box is equipped with a first sealing block that works in conjunction with the lifting block. Several of the first sealing blocks can seal or open the feeding chute.

5. A ship engine room fire alarm device according to claim 4, characterized in that, The sampling box has a circular array inside with a second lead screw drive structure that controls the horizontal movement of the first blocking block. One end of the second lead screw transmission structure is connected to a second transmission rod; One end of the second transmission rod is provided with a lifting gear that extends into the inside of the lifting block; The lowering block is provided with a lifting groove that cooperates with the second transmission rod and the lifting gear; A lifting rack that meshes with the lifting gear is installed in the lifting groove; When the collection box is installed on the sampling box, the compression ring controls the lifting block to move through the weight block, so that the lifting rack controls the second screw transmission structure to work through the lifting gear and the second transmission rod, controlling the first sealing block to open the feeding chute, so that the collection box and the sampling box are connected.

6. A ship engine room fire alarm device according to claim 5, characterized in that, The rear side of the lifting block is symmetrically provided with several guide grooves; The sampling box is provided with several guide blocks that fit into the guide groove; The fire alarm mechanism also includes a sealing component installed inside the sampling box to block or open the feeding chute.

7. A ship engine room fire alarm device according to claim 6, characterized in that, The blocking assembly includes: The second sealing block is movably positioned above the first sealing block and can seal or open the feed chute. A sealing seat is coaxially arranged with the feeding chute, and several second sealing blocks are movably arranged in a circular array on the upper side of the sealing seat; The sealing seat has a circular ring structure; The sealing seat is positioned above the first sealing block.

8. A ship engine room fire alarm device according to claim 7, characterized in that, The sealing assembly also includes: The movable strip is set inside the sampling box and fits against the upper surface of the sealing seat; The movable gear is movably located inside the movable bar and controls the movement of the movable bar on the sealing seat; The upper end face of the movable strip is fixed to the lower end face of the second sealing block; The lower end face of the moving bar is provided with a moving groove that matches the moving gear; The moving groove is provided with a moving rack that meshes with the moving gear; The second blocking block and the moving strip are both offset from the lifting block.

9. A ship engine room fire alarm device according to claim 8, characterized in that, The sealing assembly also includes: The second transmission gear is coaxially connected to the moving gear; A transmission gear ring is disposed on the inner wall of the sealing seat and meshes with the second transmission gear. The second transmission gear is provided with a transmission block that is coaxially connected to the moving gear; The outer side of the sealing seat is coaxially provided with a second rotating external toothed ring; The sampling box is rotatably equipped with a second rotating gear that meshes with a second rotating external gear ring. The sealing seat is coaxially provided with several rotating guide components that are connected to the sampling box.

10. A ship engine room fire alarm device according to claim 9, characterized in that, The sealing assembly also includes: A bevel gear structure, which is coaxially connected to a second rotating gear, and a third transmission rod is connected to one end of the bevel gear structure; A synchronous belt structure is connected to one end of the third transmission rod; One end of the synchronous belt structure is provided with a third transmission gear that meshes with the first rotating gear via a connecting rod; The third transmission gear is rotatably mounted in the sampling box; When the first rotating gear controls the filter cover to clean, the third transmission gear and the synchronous belt structure control the second sealing block to open the discharge chute, allowing the cleaned impurities to enter the collection box.

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