Ship exhaust sampling device

Abstract

The invention relates to the field of flue gas sampling, and specifically provides a ship exhaust gas sampling device, comprising a sampling tube and a collecting tube, and also comprising a filtering mechanism located on the air flow path of the sampling tube and the collecting tube; the filtering mechanism comprises a cover body with a filtering chamber, and the sampling tube and the collecting tube are connected through the filtering chamber; a rotating frame is arranged in the filtering chamber, a plurality of first supporting rollers are arranged around a first circumference in the rotating frame, a plurality of second supporting rollers are arranged around a second circumference in the rotating frame, the first supporting rollers and the second supporting rollers are arranged in a staggered manner, and the circumferential inner diameter of the first circumference is smaller than the circumferential inner diameter of the second circumference; filter cloths are alternately folded along the first supporting rollers and the second supporting rollers, and the filter cloths divide the filter chamber into an air inlet cavity connected to the sampling tube and an air outlet cavity connected to the collecting tube; the filtering mechanism also comprises a first driving component for driving the rotating frame to rotate; the invention utilizes the continuously rotating filter cloth to increase the difficulty of adhesion of the blockage, thereby reducing the probability of filter element blockage.

Description

Technical Field

[0001] The invention relates to the field of smoke sampling, and in particular to a ship exhaust sampling device. Background Art

[0002] The flue gas after the combustion of fuel oil on ships contains blockages such as large particles of coke, metal compounds, oil stains, and small-sized dust. The blockages include both large sticky particles larger than 100um and small metal particles between 5um and 100um. It is difficult for traditional filter elements to filter these particles of different sizes and physical properties. When the filter element is blocked, the entire sampling device needs to be disassembled for maintenance, and it often needs to be replaced due to corrosion.

[0003] The patent specification with the announcement number CN114624070A discloses a flue gas sampling probe device and a back-blowing method, wherein a flue gas sampling port and a reflux port are provided at the other end of the sampling tube, the direction of the flue gas sampling port is opposite to the direction of the flue gas velocity, the reflux port is tilted downward when installed, and the heating coil fixing seat is provided with an internal back-blowing joint port, an external back-blowing air inlet and a back-blowing air outlet. Although the above scheme can solve the problem of filter element blockage to a certain extent, the effect of cleaning the blockage on the filter element by gas back-blowing is very small, and the problem of filter element blockage cannot be fundamentally solved. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide a ship exhaust sampling device, which utilizes a continuously rotating filter cloth to increase the difficulty of adhesion of blockages, thereby reducing the probability of filter element blockage.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A ship exhaust sampling device comprises a sampling tube and a collecting tube, and also comprises a filtering mechanism located on the air flow paths of the sampling tube and the collecting tube;

[0007] The filtering mechanism comprises a cover body having a filtering chamber, through which the sampling tube and the collecting tube are connected; a rotating frame is arranged in the filtering chamber, a plurality of first supporting rollers are arranged around a first circumference in the rotating frame, and a plurality of second supporting rollers are arranged around a second circumference in the rotating frame, the first supporting rollers and the second supporting rollers are arranged in a staggered manner, and the inner diameter of the first circumference is smaller than the inner diameter of the second circumference;

[0008] Filter cloth is alternately folded along the first support roller and the second support roller, and the filter cloth divides the filter chamber into an air inlet cavity connected to the sampling tube and an air outlet cavity connected to the collection tube; the filtering mechanism also includes a first driving component for driving the rotating frame to rotate.

[0009] Preferably, the rotating frame includes a first turntable and a second turntable that are arranged opposite to each other, and the first turntable and the second turntable are connected by a connecting shaft; a first annular groove is provided on the first turntable and the second turntable at a position corresponding to the first circumference, and a second annular groove is provided at a position corresponding to the second circumference, and an end of the first support roller extends into the corresponding first annular groove, and an end of the second support roller extends into the corresponding second annular groove.

[0010] Preferably, permanent magnet blocks for isolating the second support roller are uniformly distributed circumferentially in the second annular groove on the first turntable, and the end of the second support roller close to the first turntable has magnetism opposite to that of the permanent magnet blocks.

[0011] Preferably, a fixing ring is also provided in the filter chamber, the first turntable is located inside the fixing ring, an annular limiting groove is provided inside the fixing ring, a plurality of sliding blocks are provided in the annular limiting groove, the sliding blocks are staggered with the second supporting rollers, and the sliding blocks are connected to the adjacent second supporting rollers through hinged rods; the annular limiting groove includes a connected outer limiting groove and an inner limiting groove, the outer limiting groove is arranged near the top, and the inner limiting groove is arranged near the bottom.

[0012] Preferably, it also includes a cleaning mechanism located below the filtering mechanism, the cleaning mechanism includes a shell having a cleaning chamber, the cleaning chamber is provided with a cleaning member and a second driving assembly for driving the cleaning member to move back and forth, and the cleaning member can clean the rotating filter cloth during the back and forth movement.

[0013] Preferably, the cleaning mechanism also includes a swinging component for driving the cleaning member to swing, the second driving component includes a movable slide, the cleaning member is hinged to the movable slide, a driving strip is slidably provided on the movable slide, one end of the driving strip is connected to the cleaning member so that the driving strip drives the cleaning member to swing back and forth during the process of sliding back and forth on the movable slide.

[0014] Preferably, one end of the driving bar away from the cleaning member abuts against the inner wall of the cleaning chamber, the inner wall abutted by the driving bar is alternately concave and convex, and the swing assembly further comprises a reset member for driving the driving bar to abut against the inner wall of the cleaning chamber.

[0015] Preferably, the cleaning member is provided with a top block, the top block abuts against an inner wall of the cleaning chamber, and the inner wall abutted by the top block is provided with an arc surface whose arc is consistent with the swing trajectory of the cleaning member.

[0016] Preferably, the cross-sectional circumference of the first support roller gradually decreases from one end to the other end, and adjacent first support rollers are laterally swapped.

[0017] Preferably, a filter element is arranged in the collecting tube, and an external backflush interface and an air outlet interface communicating with the collecting tube, and an internal backflush interface communicating with the inside of the filter element are also arranged on the collecting tube.

[0018] The beneficial effects of the present invention are:

[0019] 1. By setting a continuously folded filter cloth, the filtration area is increased and the filtration efficiency is improved. At the same time, as the filter cloth rotates continuously, the adhesion of blockages becomes more difficult, thereby reducing the probability of filter element clogging.

[0020] 2. By setting up a cleaning mechanism, the filter cloth can be cleaned synchronously during the filtering process, so that the attached blockages can also be cleaned up, the filter cloth can always remain unobstructed, and the filtering efficiency can be guaranteed at all times.

[0021] 3. By designing the annular limit groove into a connected limit outer groove and limit inner groove, the filter cloth appears dense on the top and sparse on the bottom during rotation. The cleaning mechanism is facing the sparse position of the filter element, and cleaning is more convenient. At the same time, the cleaning mechanism also has a swing component, so that the cleaning part has a certain pressure on the filter cloth, and the cleaning effect is better.

[0022] 4. The first support roller is designed to have a structure with a gradual change in the circumference of the cross section, so that the spacing of the filter cloth in the width direction is different. In the actual cleaning process, the filter cloth is cleaned from the narrow part to the wide part, which can avoid the accumulation of granular impurities on the narrow side; at the same time, the adjacent first support rollers are transversely swapped, so that when one part is narrow in front and wide in the back, the two adjacent parts are wide in front and narrow in the back. In this way, the cleaning part can clean from the narrow part to the wide part of the filter cloth during the back and forth movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the explosion structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the explosion structure of the filtering mechanism of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the first support roller, the second support roller and the filter cloth;

[0027] Figure 5 It is a front view of the filtering mechanism of the present invention;

[0028] Figure 6 for Figure 5 Middle AA section view;

[0029] Figure 7 for Figure 5Middle BB section view;

[0030] Figure 8 It is a schematic diagram of the explosion structure of the cleaning mechanism of the present invention;

[0031] Fig. 9 It is a front view of the present invention;

[0032] Fig.10 for Fig. 9 Middle CC section view;

[0033] Fig.11 Assemble the main view of the fixed frame and the rotating frame;

[0034] Fig.12 for Fig.11 Middle DD section view;

[0035] Fig.13 for Fig.12 Middle EE section view;

[0036] Fig.14 A cross-sectional view of the present invention assembled with a chimney;

[0037] Fig.15 is a schematic diagram of a cleaning member of the present invention;

[0038] Fig.16 for Fig.14 Enlarged view of point A in the middle;

[0039] in:

[0040] 1. Filter mechanism; 11. Cover; 111. Filter chamber; 112. Cover plate; 1111. Air inlet cavity; 1112. Air outlet cavity; 12. Rotating frame; 121. First rotating disk; 1211. First annular groove; 1212. Second annular groove; 1213. Second vent; 1214. Permanent magnet block; 122. Second rotating disk; 123. Connecting shaft; 13. First supporting roller; 14. Second supporting roller; 141. Protrusion ; 15, filter cloth; 16, first drive assembly; 161, fixed frame; 1611, third vent; 162, first drive motor; 163, output shaft; 164, auxiliary frame; 1641, first vent; 17, fixed ring; 171, annular limit groove; 1711, limit outer groove; 1712, limit inner groove; 1713, transition groove; 172, slider; 173, hinged rod; 174, hollow groove;

[0041] 2. Cleaning mechanism; 21. Shell; 211. Cleaning chamber; 22. Cleaning member; 221. Articulated joint; 222. Top block; 23. Second driving assembly; 231. Moving slide; 2311. Sliding slot; 232. Second driving motor; 233. Screw rod; 234. Auxiliary rod; 24. Driving bar;

[0042] 100, chimney; 200, sampling tube; 300, collecting tube; 301, collecting tube; 302, collecting tube; 303, collecting tube; 400, filter element. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] like Figures 1 to 13 As shown, a ship exhaust sampling device is used to sample the gas in a chimney 100, including a sampling tube 200 and a collecting tube 300, and also includes a filtering mechanism 1 located on the airflow path of the sampling tube 200 and the collecting tube 300;

[0047] The filter mechanism 1 includes a housing 11 having a filter chamber 111, through which the sampling tube 200 and the collection tube 300 are connected; a rotating frame 12 is arranged in the filter chamber 111, a plurality of first support rollers 13 are arranged around a first circumference in the rotating frame 12, a plurality of second support rollers 14 are arranged around a second circumference in the rotating frame 2, the first support rollers 13 and the second support rollers 14 are arranged in a staggered manner, and the inner diameter of the first circumference is smaller than the inner diameter of the second circumference;

[0048] Filter cloth 15 is alternately folded along the first support roller 13 and the second support roller 14, and the filter cloth 15 separates the filter chamber 111 into an air inlet chamber 1111 connected to the sampling tube 200 and an air outlet chamber 1112 connected to the collection tube 300; the filtering mechanism 1 also includes a first driving assembly 16 for driving the rotating frame 12 to rotate.

[0049] In this embodiment, the sampling tube 200 and the collecting tube 300 are both fixed on the filter chamber 111, which can be an integral structure or a detachable structure; a cover plate 112 is also provided on the top of the cover body 11 to facilitate the disassembly and assembly of the filter mechanism 1; the circumferential inner diameter of the first circle is smaller than the circumferential inner diameter of the second circle, that is, the first support roller 13 is located on the small circle, and the second support roller 14 is located on the large circle to surround the first support roller 13, so that the filter cloth 15 is folded in an "S" shape; when the first drive assembly 16 drives the rotating frame 12 to rotate, it drives the first support roller 13 and the second support roller 14 to rotate, and finally drives the filter cloth 15 to rotate synchronously.

[0050] In some preferred embodiments, the rotating frame 12 includes a first turntable 121 and a second turntable 122 that are relatively arranged, and the first turntable 121 and the second turntable 122 are connected by a connecting shaft 123; a first annular groove 1211 is provided on the first turntable 121 and the second turntable 122 at a position corresponding to the first circumference, and a second annular groove 1212 is provided at a position corresponding to the second circumference, and an end of the first support roller 13 extends into the corresponding first annular groove 1211, and an end of the second support roller 14 extends into the corresponding second annular groove 1212.

[0051] In this embodiment, protrusions 141 extend from both ends of the first support roller 13 and the second support roller 14 , and the support of the first support roller 13 and the second support roller 14 is achieved by extending the protrusions 141 into the first annular groove 1211 and the second annular groove 1212 .

[0052] Preferably, the first driving assembly 16 includes a fixing frame 161 fixed to the inner wall of the filter chamber 111, and the fixing frame 161 is specifically fixed to a position in the filter chamber 111 near the collecting pipe 300. The fixing frame 161 is provided with a first driving motor 162 for driving the rotating frame 12 to rotate. Specifically, the output end of the first driving motor 162 is connected to an output shaft 163, and the output shaft 163 passes through the connecting shaft 123, and the output shaft 163 and the connecting shaft 123 are splined. To ensure the stability of the rotating frame 12, the first driving assembly 16 also includes an auxiliary frame 1 64, the output shaft 163 passes through the connecting shaft 123 and is rotatably connected to the auxiliary frame 164, the auxiliary frame 164 is specifically located in the filter chamber 111, and is fixed on the side wall near the sampling tube 200; to facilitate the smooth flow of smoke, the auxiliary frame 164 is provided with a first air vent 1641 distributed in an annular manner; the first turntable 121 is provided with a second air vent 1213 distributed in an annular manner, and the second air vent 1213 is arranged at the position of the first turntable 121 in the air outlet cavity 1112; the fixed frame 161 is provided with a third air vent 1611 distributed in an annular manner.

[0053] In some preferred embodiments, permanent magnet blocks 1214 for isolating the second support roller 14 are evenly distributed in the circumferential direction of the second annular groove 1212 on the first turntable 121 , and the end of the second support roller 14 close to the first turntable 121 is magnetic and has the same magnetism as the permanent magnet block 1214 .

[0054] In this embodiment, the end of the second support roller 14 (specifically, the protrusion 141 extending from the end) has the same magnetic properties as the adjacent permanent magnet block 1214, that is, the protrusion 141 is subjected to two repulsive forces with the same direction and equal repulsive force, and flexible transmission is achieved with the help of the repulsive force, which can ensure that the protrusion 141 is always in the middle position between the two adjacent permanent magnet blocks 1214, that is, the protrusion 141 can be relatively still in the second annular groove 1212. When the permanent magnet block 1214 rotates with the rotating frame 12, it drives the second support roller 14 to rotate synchronously. The first support roller 13 and the second support roller 14 are connected by the filter cloth 15, so they will also rotate synchronously.

[0055] Since the circumferential distribution of the second support rollers 14 is not completely uniform, the transmission structure that drives the second support rollers 14 to rotate synchronously through the first rotating disk 121 must adopt flexible transmission to achieve smooth transmission.

[0056] In some preferred embodiments, a fixing ring 17 is further provided in the filter chamber 111, the first turntable 121 is located inside the fixing ring 17, an annular limiting groove 171 is provided inside the fixing ring 17, a plurality of sliders 172 are provided in the annular limiting groove 171, the plurality of sliders 172 are staggeredly arranged with a plurality of second support rollers 14, and the sliders 172 are connected to adjacent second support rollers 14 through hinge rods 173; the annular limiting groove 171 includes a connected outer limiting groove 1711 and an inner limiting groove 1712, the outer limiting groove 1711 is arranged near the top, and the inner limiting groove 1712 is arranged near the bottom.

[0057] In this embodiment, the fixing ring 17 is specifically arranged close to the fixing frame 161; the interior of the fixing ring 17 is also provided with a hollow groove 174 for accommodating the hinge rod 173, and the top of the second annular groove 1212 is semi-open to avoid the hinge rod 173; the annular limiting groove 171 includes a connected outer limiting groove 1711 and an inner limiting groove 1712, specifically, the outer limiting groove 1711 and the inner limiting groove 1712 are both semicircular, and the outer limiting groove 1711 is slightly closer to the outside, and the inner limiting groove 1712 is slightly closer to the inside, that is, the radius of the outer limiting groove 1711 is larger than that of the inner limiting groove 1712, and the outer limiting groove 1711 is specifically connected to the inner limiting groove 1712 through the transition groove 1713.

[0058] During the actual movement, the second support roller 14 will drive the slider 172 to slide in the annular limiting groove 171 through the hinge rod 173 during the rotation. When the slider 172 slides from the limiting outer groove 1711 to the limiting inner groove 1712, the length of the hinge rod 173 remains unchanged, but the inner diameter of the limiting groove becomes smaller, so that the distance between adjacent second support rollers 14 becomes larger, that is, the distance between the second support rollers 14 at the top is small, and the filter cloth 15 is denser, and the distance between the second support rollers 14 at the bottom is large, and the filter cloth 15 is sparser; specifically, Figure 6 and 7 As shown, after the hot flue gas gathers upward, it contacts the denser filter cloth 15, the filtering area is increased, and the filtering efficiency is improved.

[0059] In some preferred embodiments, the ship exhaust sampling device also includes a cleaning mechanism 2 located below the filtering mechanism 1, the cleaning mechanism 2 includes a shell 21 having a cleaning chamber 211, a cleaning member 22 and a second driving assembly 23 for driving the cleaning member 22 to move back and forth are arranged in the cleaning chamber 211, and the cleaning member 22 can clean the rotating filter cloth 15 during the back and forth movement.

[0060] In this embodiment, since the spacing between the second support rollers 14 located at the bottom mentioned above is large and the filter cloth 15 is relatively sparse, the cleaning mechanism 2 is arranged below the filter mechanism 1, which is more convenient for cleaning the filter cloth 15; the outer shell 21 is fixed to the bottom of the cover body 11 by bolts, and the cleaning chamber 211 is also connected to the filter chamber 111; the cleaning member 22 is located below the filter cloth 15 and contacts the filter cloth 15, and the cleaning member 22 can clean back and forth along the width direction of the filter cloth 15 during the back and forth movement; the cleaning member 22 can specifically adopt a cleaning ball.

[0061] In some preferred embodiments, the cleaning mechanism 2 also includes a swinging component for driving the cleaning member 22 to swing, the second driving component 23 includes a movable slide 231, the cleaning member 22 is hinged on the movable slide 231, and the swinging component includes a driving bar 24 slidably arranged on the movable slide 231, and one end of the driving bar 24 is drivingly connected to the cleaning member 22, so that the driving bar 24 drives the cleaning member 22 to swing back and forth during the process of sliding back and forth on the movable slide 231.

[0062] In this embodiment, the second driving assembly 23 specifically includes a second driving motor 232 fixed on the inner wall of the cleaning chamber 211 and a screw rod 233 drivingly connected to the output shaft of the second driving motor 232. The movable slide 231 is threadedly matched with the screw rod 233. By controlling the second driving motor 232 to rotate forward for a certain period of time and then reverse for the same period of time, the reciprocating motion of the movable slide 231 is realized, thereby realizing the reciprocating motion of the cleaning member 22. At the same time, an auxiliary rod 234 is also provided to guide and limit the movable slide 231. A sliding groove 2311 is provided on the top of the movable slide 231, and the driving bar 24 is placed in the sliding groove 2311. The cleaning member 22 is provided with a hinged head 221 and is rotatably connected to the movable slide 231. The driving bar 24 specifically adopts a driving rack structure, and a tooth structure is also provided on the hinged head 221. The transmission of the two is realized by the engagement of the driving bar 24 and the hinged head 221.

[0063] In some preferred embodiments, one end of the driving bar 24 away from the cleaning member 22 abuts against the inner wall of the cleaning chamber 211, and the inner wall abutted by the driving bar 24 is provided with alternatingly distributed concave surfaces and convex surfaces, and the swinging assembly also includes a reset member for driving the driving bar 24 to abut against the inner wall of the cleaning chamber 211.

[0064] In this embodiment, the driving strip 24 is utilized to continuously contact the concave and convex surfaces of the inner wall of the cleaning chamber 211, which is converted into a power source for the driving strip 24; the inner wall with the concave and convex surfaces, the driving strip 24, the hinged head 221 and the reset member together constitute a swing assembly to drive the cleaning member 22 to swing; the reset member can specifically be a torsion spring arranged at the hinge position of the hinged head 221 and the movable slide 231, and the torsion spring makes the hinged head 221 always have a tendency to rotate in one direction, and this tendency can make the driving strip 24 always contact with the inner wall of the cleaning chamber 211, so as not to be separated and lose the driving force.

[0065] In some preferred embodiments, Figure 8 , Fig.10 , Fig.15 As shown, a top block 222 is provided on the cleaning member 22 , and the top block 222 abuts against the inner wall of the cleaning chamber 211 . The inner wall abutted by the top block 222 is provided with an arc surface whose arc is consistent with the swing trajectory of the cleaning member 22 .

[0066] In this embodiment, the top block 222 is specifically arranged opposite to the hinge joint 221, that is, it is located on both sides of the cleaning member 22 on a straight line. The top block 222 abuts against the arc surface, which can support the swing of the cleaning member 22, making the swing of the cleaning member 22 more stable.

[0067] In some preferred embodiments, the cross-sectional circumference of the first support roller 13 gradually decreases from one end to the other end, and adjacent first support rollers 13 are laterally swapped.

[0068] In this embodiment, the structure of the first support roller 13 is specifically a gradual change from a circular shape at one end to an elliptical shape at the other end, and the major axis of the ellipse is equal to the diameter of the circle. This design makes the spacing of the filter cloth 15 in the width direction different, such as Figure 4 As shown, it is narrow in front and wide in the back; after the adjacent first support rollers 13 are laterally swapped, when one place is narrow in front and wide in the back, the two adjacent places are wide in front and narrow in the back; in the actual cleaning process, the cleaning member 22 cleans from the narrow part to the wide part of the filter cloth 15, which can avoid the accumulation of particulate impurities on the narrow side.

[0069] Preferably, the filter cloth 15 is composed of several pieces. When fixing it, the second support roller 14 is designed to be two half-roller structures. Each filter cloth 15 is clamped and fixed by two half-rollers at the rear end of the folding to prevent the filter cloth 15 from moving as the density of the filter cloth 15 changes. The S-shaped winding of the filter cloth 15 in the circumferential direction will prevent it from moving due to excessive friction.

[0070] When the cleaning member 22 moves along the filter cloth 15 from narrow to wide, due to the increase in width, the contact between the bristles of the cleaning member 22 and the filter cloth 15 becomes less, and the cleaning effect becomes worse. Through the reciprocating swing of the cleaning member 22, the bristles can be swung into the recessed area of ​​the filter cloth 15, and the recessed part of the filter cloth 15 will not allow the bristles to be easily swung out. Therefore, as the width of the filter cloth 15 increases, the number of cleaning bristles also increases, thereby ensuring the cleaning quality.

[0071] It should be noted that the speed of the filter element assembly composed of the first support roller 13, the second support roller 14 and the filter cloth 15 is slow, that is, the speed of the first drive motor 162 is slow, but the speed of the cleaning member 22 moving back and forth is fast, that is, the speed of the second drive motor 232 is fast; Figure 6 The filter element assembly consisting of the first support roller 13, the second support roller 14 and the filter cloth 15 rotates a full circle, and each filter cloth 15 rotates to the bottom to Figure 6 For example, if the number of the filter cloths 15 is 10, it is sufficient to ensure that the cleaning member 22 reciprocates 10 times at a uniform speed within one full rotation of the filter element assembly. When the speed of the first drive motor 162 is fixed, the speed of the second drive motor 232 can be calculated accordingly. At the same time, since the bristles on the cleaning member 22 are soft, they can slide in and out of the adjacent filter cloths 15 at will, so there will be no interference.

[0072] In some preferred embodiments, a filter element 400 is disposed in the collecting tube 300 , and the collecting tube 300 is also provided with an external backflush interface 301 and an air outlet interface 302 communicating with the collecting tube 300 , and an internal backflush interface 303 communicating with the inside of the filter element 400 .

[0073] Working principle of the present invention:

[0074] The ship exhaust sampling device of the present invention is fixed to the chimney 100, such as Fig.14 , Fig.16 As shown, the flue gas enters from the sampling tube 200 and enters the air inlet chamber 1111 through the first air vent 1641, and contacts the continuously rotating filter cloth 15. Since the filter cloth 15 always maintains a dense upper and sparse lower state during the rotation, and the bottom of the filter cloth 15 is blocked by the cleaning mechanism 2, the hot flue gas will gather upward and contact the dense filter cloth 15 to complete the filtering operation. At the same time, the cleaning mechanism 2 continuously sweeps back and forth along the width direction of the filter cloth 15 at a sparse position below the filter cloth to ensure that the filter cloth 15 is clean and transparent. The filtered flue gas enters the air outlet chamber 1112, and enters the collection pipe 300 through the second air vent 1213 and the third air vent 1611, and is then collected after being filtered by the filter element 400.

[0075] Principle of density change of filter cloth 15: during the rotation process, rotating frame 12 drives first support roller 13, second support roller 14 and filter cloth 15 to rotate, and at the same time, second support roller 14 drives slider 172 to slide in annular limiting groove 171 through hinge rod 173. Specifically, slider 172 slides circularly in limiting outer groove 1711, transition groove 1713 and limiting inner groove 1712. When slider 172 is located in limiting outer groove 1711, the spacing of corresponding second support roller 14 becomes smaller, and filter cloth 15 is denser. When slider 172 is located in limiting inner groove 1712, the spacing of corresponding second support roller 14 becomes larger, and filter cloth 15 is sparser, so that filter cloth 15 always presents the situation of being dense on top and sparse on bottom.

[0076] The specific working process of the cleaning mechanism 2 is as follows: while the rotating frame 12 rotates, the second driving motor 232 drives the movable slide 231 to move back and forth by continuously rotating forward and reverse, thereby realizing the reciprocating motion of the cleaning member 22; while following the reciprocating motion of the movable slide 231, the driving bar 24 always abuts against the inner wall with the concave and convex surfaces under the action of the torsion spring, and moves back and forth on the movable slide 231 under the action of the concave and convex surfaces, and continuously drives the cleaning member 22 to swing through the hinged joint 221 to adjust the contact degree between the bristles of the cleaning member 22 and the filter cloth 15.

[0077] The design and arrangement of the sampling tube 200 and the method of cleaning the filter element by backflushing in the present invention are both prior arts and have been disclosed in the patent specification with publication number CN114624070A, and will not be described in detail in this application.

[0078] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A ship exhaust sampling device, comprising a sampling tube and a collecting tube, characterized in that: Also included is a filtering mechanism located on the airflow path of the sampling tube and the collection tube; The filtering mechanism comprises a cover body having a filtering chamber, through which the sampling tube and the collecting tube are connected; a rotating frame is arranged in the filtering chamber, a plurality of first supporting rollers are arranged around a first circumference in the rotating frame, and a plurality of second supporting rollers are arranged around a second circumference in the rotating frame, the first supporting rollers and the second supporting rollers are arranged in a staggered manner, and the inner diameter of the first circumference is smaller than the inner diameter of the second circumference; Filter cloth is alternately folded along the first support roller and the second support roller, and the filter cloth divides the filter chamber into an air inlet cavity connected to the sampling tube and an air outlet cavity connected to the collection tube; the filtering mechanism also includes a first driving component for driving the rotating frame to rotate; The rotating frame comprises a first rotating disk and a second rotating disk which are arranged opposite to each other, and the first rotating disk and the second rotating disk are connected by a connecting shaft; a first annular groove is arranged at a position corresponding to the first circumference on the first rotating disk and a second annular groove is arranged at a position corresponding to the second circumference on the first rotating disk and the end of the first supporting roller extends into the corresponding first annular groove and the end of the second supporting roller extends into the corresponding second annular groove; Permanent magnets for isolating the second support roller are evenly distributed in the circumferential direction of the second annular groove on the first rotating disk, and the end of the second support roller close to the first rotating disk has magnetism opposite to that of the permanent magnets; A fixing ring is also provided in the filter chamber, the first turntable is located inside the fixing ring, an annular limiting groove is provided inside the fixing ring, a plurality of sliding blocks are provided in the annular limiting groove, the sliding blocks are staggered with the second supporting rollers, and the sliding blocks are connected to the adjacent second supporting rollers through hinged rods; the annular limiting groove includes a connected outer limiting groove and an inner limiting groove, the outer limiting groove is arranged near the top, and the inner limiting groove is arranged near the bottom.

2. The ship exhaust sampling device according to claim 1, characterized in that: It also includes a cleaning mechanism located below the filtering mechanism, the cleaning mechanism including a shell having a cleaning chamber, the cleaning chamber being provided with a cleaning member and a second driving assembly for driving the cleaning member to move back and forth, the cleaning member being able to clean the rotating filter cloth during the back and forth movement.

3. The ship exhaust sampling device according to claim 2, characterized in that: The cleaning mechanism also includes a swinging component for driving the cleaning member to swing, the second driving component includes a movable slide, the cleaning member is hinged on the movable slide, a driving strip is slidably arranged on the movable slide, one end of the driving strip is connected to the cleaning member so that the driving strip drives the cleaning member to swing back and forth during the process of sliding back and forth on the movable slide.

4. The ship exhaust sampling device according to claim 3, characterized in that: One end of the driving bar away from the cleaning member abuts against the inner wall of the cleaning chamber, and the inner wall abutted by the driving bar is alternately concave and convex. The swing assembly also includes a reset member for driving the driving bar to abut against the inner wall of the cleaning chamber.

5. The ship exhaust sampling device according to claim 3 or 4, characterized in that: The cleaning member is provided with a top block, the top block abuts against the inner wall of the cleaning chamber, and the inner wall abutted by the top block is provided with an arc surface with an arc consistent with the swing trajectory of the cleaning member.

6. The ship exhaust sampling device according to claim 2, characterized in that: The cross-sectional circumference of the first support rollers gradually decreases from one end to the other end, and adjacent first support rollers are transversely arranged.

7. The ship exhaust sampling device according to claim 1, characterized in that: A filter element is arranged in the collecting tube, and an external backflush interface and an air outlet interface communicating with the collecting tube and an internal backflush interface communicating with the inside of the filter element are also arranged on the collecting tube.

Images