A pipe dredging mechanism of a positive and negative pressure integrated pneumatic ash conveying system and a mounting method thereof

Abstract

The application discloses a pipe dredging mechanism of a positive and negative pressure integrated pneumatic ash conveying system and a mounting method thereof, which comprises an ash conveying pipeline body, a cleaning brush and a communication pipe, rotating mechanisms are arranged on both sides of the inner wall of the communication pipe at the ends, and the rotating mechanisms are fixedly installed with the cleaning brush, and the cleaning brush rotates by the rotating mechanism and adheres to the inner wall of the ash conveying pipeline body; the rotating mechanism and other devices are arranged, the problem that with the increase of the blockage, the pressure in the pipeline gradually increases, when the dredging tool and high-pressure airflow enter the pipeline, the pressure in the pipeline further increases, which may cause the deformation or rupture of the pipeline, and thus the pipe dredging device or the air pressure method is easy to cause damage to the inner wall of the pipeline during use, and the airflow can drive the cleaning brush to rotate and adhere to the inner wall of the ash conveying pipeline body by the rotating mechanism, and the inner wall of the ash conveying pipeline body is cleaned in real time, and the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of positive and negative pressure integrated pneumatic ash conveying system's pipe dredging mechanism and its installation method. BACKGROUND

[0002] Positive and negative pressure integrated pneumatic ash conveying system is a kind of ash, slag or bulk material conveying to a certain height using airflow pneumatic conveying device, it is based on two kinds of pneumatic conveying mode, combined with the advantages of positive pressure and negative pressure, with long conveying distance, large conveying capacity, the system is mainly composed of airflow conveying pipeline, gas source device, control device etc.;

[0003] The main disadvantage of positive and negative pressure integrated pneumatic ash conveying system is high energy consumption, because pressure loss leads to low system efficiency, more energy is consumed to solve the conveying problem, in addition, positive pressure conveying system is also affected by gas source impurity content, pipeline cleaning, safety and other problems, negative pressure conveying system is easily affected by dust type, pipeline blockage, heat preservation and other factors;

[0004] In order to avoid the pipe blockage caused by dust accumulation, positive and negative pressure integrated pneumatic ash conveying system needs to clean the inner wall of pipeline regularly during actual use, mostly using pipe dredging device or air pressure method for dredging, dredging device can effectively remove the blockage in pipeline, and air pressure method is to inject air into pipeline with air pump, so that high pressure airflow is formed in pipeline, and the blockage is scattered, but in actual use, with the increase of blockage, the pressure in pipeline will gradually increase, when dredging tool and high pressure airflow enter the pipeline, the pressure in pipeline will further increase, which may cause pipeline deformation or rupture, therefore, the above two methods are easy to cause damage to the inner wall of pipeline during use, therefore we propose a kind of positive and negative pressure integrated pneumatic ash conveying system's pipe dredging mechanism and its installation method. SUMMARY

[0005] In order to overcome the shortcomings of prior art, the present application provides a kind of positive and negative pressure integrated pneumatic ash conveying system's pipe dredging mechanism and its installation method, by setting up rotating mechanism, after the connection of communication pipe and two groups of ash conveying pipeline body is completed, the cleaning brush fixedly installed on the rotating mechanism in the communication pipe can be inserted into the ash conveying pipeline body and attached to the inner wall of ash conveying pipeline body, when gas source device is started and ash is conveyed through ash conveying pipeline body, airflow can drive cleaning brush to rotate and clean the inner wall of ash conveying pipeline body in real time by attaching to the inner wall of ash conveying pipeline body, avoid the accumulation of dust on the inner wall of ash conveying pipeline body, improve the practicability of device.

[0006] To solve the above technical problems, the present application provides the following technical solutions: a pipeline dredging mechanism of a positive and negative pressure integrated pneumatic ash conveying system and a mounting method thereof, comprising an ash conveying pipeline body, a cleaning brush and a communication pipe, both ends of the communication pipe are fixedly installed with the ash conveying pipeline body, both sides of the inner wall of the communication pipe are connected with two groups of ash conveying pipeline bodies, and both sides of the inner wall of the communication pipe are connected with two groups of ash conveying pipeline bodies, and both sides of the inner wall of the communication pipe are connected with two groups of ash conveying pipeline bodies.

[0007] As a preferred technical solution of the present application, the rotating mechanism comprises a rotating groove integrally formed at both sides of the inner wall of the communication pipe, and a first rotating ring is rotatably arranged in the rotating groove, a impeller is fixedly installed in the middle of the first rotating ring, and a transmission ring is integrally formed on the outer surface of the impeller, a first connecting ring is installed on the surface of the transmission ring, and the first connecting ring is inserted into the inside of the ash conveying pipeline body, a plurality of groups of mounting plates are installed on the outer surface of the first connecting ring at equal intervals, and a cleaning brush is fixedly installed on the mounting plate.

[0008] As a preferred technical solution of the present application, the outer wall of the first rotating ring is provided with a plurality of groups of ball grooves at equal intervals on both sides of the surface, and the inside of the ball groove is embedded with a rollable ball, and the inner wall of the rotating groove is provided with an annular rolling groove on both sides of the surface, and the outer wall of the ball is matched with the inner wall of the rolling groove.

[0009] As a preferred technical solution of the present application, the first connecting ring is fixedly installed in the inner wall of the ash conveying pipeline body through a limiting mechanism, the limiting mechanism comprises a connecting groove integrally formed on the inner wall of the ash conveying pipeline body, and a second connecting ring is rotatably arranged in the connecting groove, and the outer end of the second connecting ring is connected with the first connecting ring.

[0010] As a preferred technical solution of the present application, the outer surface of the first connecting ring is provided with a plurality of groups of teeth at equal intervals, and a plurality of groups of tooth grooves are formed on the side surface of the transmission ring close to the first connecting ring, and the tooth grooves are meshed with the first connecting ring.

[0011] As a preferred technical solution of the present application, the second connecting ring and the connecting groove are connected through a locking mechanism, the locking mechanism comprises a plurality of spring grooves formed on the inner surface of the second connecting ring, a limiting block is penetratingly arranged on the surface of the spring groove, one end of the spring is connected and arranged in the spring groove, and the other end is connected with the inner end of the limiting block.

[0012] The inner wall of the connecting groove and the limiting block are provided with a steel ball groove at the corresponding position, and a steel ball is movably embedded in the steel ball groove, and a movable groove is arranged on the bottom end surface of the steel ball, and the inner wall of the movable groove is provided with an arc surface matched with the steel ball, and the steel ball can pass through the steel ball groove and push the limiting block into the spring groove with the movement of the movable groove.

[0013] The movable groove is fixedly installed with a plurality of groups of pull rods near the surface of the side of the first connecting ring, the pull rods all penetrate the surface of the first connecting ring and limit the movable groove, and the first connecting ring is provided with a counterbore matched with the movable groove on the outer wall of the side near the movable groove.

[0014] As a preferred technical scheme of the present application, the surfaces of the limiting blocks are all inclined, and the outer walls of the connecting grooves are all provided as inclined surfaces matched with the outer walls of the limiting blocks.

[0015] As a preferred technical scheme of the present application, a plurality of groups of limiting rings are integrally formed at the ends of the pull rods, and the surfaces of the limiting rings are sleeved with second rotating rings, the outer wall of the first connecting ring is integrally formed with a threaded groove near the side of the second rotating ring, and the second rotating ring is embedded in the threaded groove, and the inner wall of the threaded groove and the outer wall of the second rotating ring are all provided with threads and engaged with each other.

[0016] As a preferred technical scheme of the present application, a plurality of groups of groove holes are equidistantly formed on the outer surface of the second rotating ring.

[0017] The present application also provides a technical scheme, a mounting method of a pipeline dredging mechanism of a positive and negative pressure integrated pneumatic ash conveying system, and the specific steps are as follows:

[0018] S1, the first connecting ring is moved, so that the first connecting ring drives the limiting block to contact the outer wall of the connecting groove through the second connecting ring, the limiting block is retracted into the spring groove under the pushing of the connecting groove, the second connecting ring can be smoothly inserted into the connecting groove, at the same time, the limiting block is ejected from the spring groove by the spring and cooperates with the connecting groove to limit the position of the first connecting ring, and the installation of the first connecting ring is completed.

[0019] S2, the communication pipe is moved, so that the communication pipe drives the transmission ring to be inserted into the first connecting ring, the teeth arranged on the first connecting ring are engaged with the tooth groove arranged on the transmission ring after the communication pipe is moved, so that the transmission can be driven, then the communication pipe and the two side ash conveying pipeline bodies are fixed by bolts, and the installation of the ash conveying pipeline bodies and the two groups of communication pipes is completed.

[0020] S3, the air source device is started, the high-speed airflow carries dust for conveying through the ash conveying pipeline body, the air flows through the communication pipe to drive the impeller to rotate, the first connecting ring drives the first connecting ring to rotate through the transmission ring, the first connecting ring drives the second connecting ring to rotate under the limitation of the connecting groove, at the same time, the first connecting ring drives the cleaning brush to clean the dust adhered to the inner wall of the ash conveying pipeline body through the mounting plate.

[0021] S4. When the cleaning brush needs to be replaced, the slot hole is engaged to make the second rotating ring rotate. While the second rotating ring rotates under the restriction of the threaded groove, it pulls the pull rod through the limit ring. The pull rod pulls the movable groove into the countersunk hole. When the movable groove moves, it pushes the steel ball to move inside the steel ball groove through its inner wall. As the steel ball moves, the limit block is pushed into the spring groove. The limit block no longer restricts the position of the second connecting ring with the connecting groove. The first connecting ring can drive the second connecting ring to be removed from the connecting groove. The first connecting ring drives the cleaning brush to be taken out of the ash conveying pipe body for replacement through the mounting plate.

[0022] Compared with the prior art, the beneficial effects that this invention can achieve are:

[0023] 1. By using a rotating mechanism, the pressure inside the pipe gradually increases as blockages accumulate. When unblocking tools and high-pressure airflow enter the pipe, the pressure inside the pipe will further increase, which may cause pipe deformation or rupture. Therefore, pipe unblocking tools or air pressure methods are prone to damaging the inner wall of the pipe during use. After the connecting pipe and the two sets of ash conveying pipe bodies are connected, the cleaning brush fixedly installed on the rotating mechanism inside the connecting pipe can be inserted into the inside of the ash conveying pipe body and fit against the inner wall of the ash conveying pipe body. When the air source device is started and ash is conveyed through the ash conveying pipe body, the airflow can drive the cleaning brush to rotate against the inner wall of the ash conveying pipe body through the rotating mechanism and clean the inner wall of the ash conveying pipe body in real time, avoiding the accumulation of dust on the inner wall of the ash conveying pipe body and improving the practicality of the device.

[0024] 2. Through the locking mechanism, the second connecting ring can be inserted into the connecting groove. The limiting block, in conjunction with the connecting groove, restricts the position of the first connecting ring. After the first connecting ring is installed, it can drive the cleaning brush for cleaning via the mounting plate. When the cleaning brush needs to be replaced, by pulling the lever, the movable groove can move by pushing the steel ball inside the steel ball groove through its inner wall. As the steel ball moves, the limiting block is pushed into the spring groove, and the limiting block no longer restricts the position of the second connecting ring in conjunction with the connecting groove. The first connecting ring can then drive the second connecting ring to be removed from the connecting groove. This achieves the purpose of allowing the first connecting ring to drive the cleaning brush from the ash conveying pipe body via the mounting plate for periodic replacement, improving the convenience of the device. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0027] Figure 3 This is a partial frontal cross-sectional view of the present invention;

[0028] Figure 4 Figure 1 is a schematic view of a side cross-sectional structure of the present application;

[0029] Figure 5 Figure 2 is a schematic view of a side cross-sectional structure of the present application; Figure 2 Figure 3 is an enlarged schematic view of the structure at A in Figure 2;

[0030] Figure 6 Figure 4 is a schematic view of a side cross-sectional structure of the present application; Figure 3 Figure 5 is an enlarged schematic view of the structure at B in Figure 4;

[0031] Figure 7 Figure 6 is a schematic view of a side cross-sectional structure of the present application; Figure 3 Figure 7 is an enlarged schematic view of the structure at C in Figure 6;

[0032] Figure 8 Figure 8 is a schematic view of a side cross-sectional structure of the present application; Figure 4 Figure 9 is an enlarged schematic view of the structure at D in Figure 8.

[0033] Wherein: 1, ash conveying pipeline body; 21, rotating groove; 22, first rotating ring; 23, impeller; 24, transmission ring; 25, first connecting ring; 26, mounting plate; 27, tooth; 28, tooth groove; 3, cleaning brush; 41, ball groove; 42, ball; 43, rolling groove; 51, second connecting ring; 52, connecting groove; 53, spring groove; 54, limiting block; 55, spring; 61, movable groove; 62, steel ball groove; 63, steel ball; 64, counterbore; 7, pull rod; 81, limiting ring; 82, second rotating ring; 83, threaded groove; 9, slot; 10, communication pipe. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the following further describes the present application in combination with specific embodiments, but the following embodiments are only preferred embodiments of the present application, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application. In the following embodiments, the experimental methods are conventional methods, and the materials, reagents, etc. used in the following embodiments are commercially available unless otherwise specified.

[0035] Embodiment:

[0036] As Figure 1 - Figure 8As shown, this embodiment proposes a pipe clearing mechanism for an integrated positive and negative pressure pneumatic ash conveying system, including an ash conveying pipe body 1, a cleaning brush 3, and a connecting pipe 10. The ash conveying pipe body 1 is fixedly installed at both ends of the connecting pipe 10. Rotating mechanisms are connected to the inner walls of the two sets of ash conveying pipe bodies 1 near the connecting pipe 10 at both ends of the inner wall. The cleaning brush 3 is fixedly installed on the rotating mechanism and rotates against the inner wall of the ash conveying pipe body 1 through the rotating mechanism.

[0037] After the connecting pipe 10 and the two sets of ash conveying pipe bodies 1 are connected, the cleaning brush 3 fixedly installed on the rotating mechanism inside the connecting pipe 10 can be inserted into the ash conveying pipe body 1 and fit against the inner wall of the ash conveying pipe body 1. When the air source device is started and ash is conveyed through the ash conveying pipe body 1, the airflow can drive the cleaning brush 3 to rotate against the inner wall of the ash conveying pipe body 1 through the rotating mechanism and clean the inner wall of the ash conveying pipe body 1 in real time, avoiding the accumulation of dust on the inner wall of the ash conveying pipe body 1 and improving the practicality of the device.

[0038] The rotating mechanism includes rotating grooves 21 formed on both ends of the inner wall of the connecting pipe 10. A first rotating ring 22 is rotatably arranged inside the rotating groove 21. Several sets of ball grooves 41 are equidistantly arranged around the outer surface of the outer wall of the first rotating ring 22. Rollable balls 42 are embedded in the ball grooves 41. Annular rolling grooves 43 are formed on both sides of the inner wall of the rotating groove 21. The outer walls of the balls 42 are all in contact with the inner walls of the rolling grooves 43. Through this design, when the first rotating ring 22 rotates inside the rotating groove 21, it can drive the balls 42 to roll against the inner walls of the rolling grooves 43 through the ball grooves 41, thereby reducing the contact area between the rotating groove 21 and the first rotating ring 22 and reducing the friction force experienced by the first rotating ring 22 when it rotates inside the rotating groove 21.

[0039] An impeller 23 is fixedly installed in the middle of the first rotating ring 22, and a transmission ring 24 is integrally formed on the outer surface of the impeller 23. A first connecting ring 25 is sleeved on the surface of the transmission ring 24, and the first connecting ring 25 is inserted into the ash conveying pipe body 1. Several sets of mounting plates 26 are equidistantly installed around the outer surface of the first connecting ring 25, and a cleaning brush 3 is fixedly installed on the mounting plate 26.

[0040] When the air source device is started, the high-speed airflow carries dust for conveying through the ash conveying pipe body 1, when the air flows through the communication pipe 10, the impeller 23 is driven to rotate, the first rotating ring 22 is driven to rotate by the impeller 23, the first rotating ring 22 can drive the rolling ball 42 to roll in the inner wall of the rolling groove 43 through the ball groove 41, the first rotating ring 22 can rotate under the limitation of the rotating groove 21, with the rotation of the impeller 23, the transmission ring 24 arranged on the impeller 23 can drive the first connecting ring 25 to rotate, the first connecting ring 25 drives the cleaning brush 3 to clean the dust attached to the inner wall of the ash conveying pipe body 1 through the mounting plate 26.

[0041] In order to improve the stability of the first connecting ring 25 rotating in the ash conveying pipe body 1, ensure that the cleaning brush 3 can always adhere to the inner wall of the ash conveying pipe body 1 when the first connecting ring 25 drives the mounting plate 26 to rotate, the first connecting ring 25 is fixedly installed on the inner wall of the ash conveying pipe body 1 through a limiting mechanism, wherein the limiting mechanism comprises a connecting groove 52 integrally formed on the inner wall of the ash conveying pipe body 1, and a second connecting ring 51 is rotatably arranged in the connecting groove 52, and the outer end of the second connecting ring 51 is connected with the first connecting ring 25, through the design, the first connecting ring 25 can drive the second connecting ring 51 to rotate under the limitation of the connecting groove 52, avoiding the position of the first connecting ring 25 from being dislocated.

[0042] In order to improve the stability of the connection between the transmission ring 24 and the first connecting ring 25 and improve the transmission effect, a plurality of sets of teeth 27 are equidistantly arranged on the outer surface of the first connecting ring 25, a plurality of sets of tooth grooves 28 are formed on the side surface of the transmission ring 24 close to the first connecting ring 25, through the design, after the transmission ring 24 is inserted into the first connecting ring 25 under the driving of the communication pipe 10, the teeth 27 arranged on the first connecting ring 25 can be inserted into the tooth grooves 28 formed on the transmission ring 24 and meshed with each other, so as to avoid the idle running of the transmission ring 24 in the first connecting ring 25, which causes the transmission to fail.

[0043] In order to be able to replace the cleaning brush 3 regularly, the second connecting ring 51 and the connecting groove 52 are connected through a locking mechanism, the locking mechanism comprises a plurality of spring grooves 53 formed on the inner surface of the second connecting ring 51, and a limiting block 54 is penetratingly arranged on the surface of the spring groove 53, one end of a spring 55 is connected and arranged in the spring groove 53, and the other end is connected with the inner end of the limiting block 54;

[0044] The inner wall of the connecting groove 52 is provided with a steel ball groove 62 corresponding to the position of the limiting block 54, and the steel ball groove 62 is movably embedded with a steel ball 63. The bottom surface of the steel ball 63 is provided with a movable groove 61, and the inner wall of the movable groove 61 is provided with an arc surface matched with the steel ball 63. With the movement of the movable groove 61, the steel ball 63 can pass through the steel ball groove 62 and push the limiting block 54 into the spring groove 53;

[0045] The movable groove 61 is fixedly installed on one side surface of the first connecting ring 25 and is provided with a plurality of groups of pull rods 7. The pull rods 7 pass through the surface of the first connecting ring 25 and limit the movable groove 61. The first connecting ring 25 is provided with a counterbore 64 matched with the movable groove 61 on the outer wall of the side close to the movable groove 61;

[0046] When the first connecting ring 25 needs to be installed, the first connecting ring 25 is moved to insert the second connecting ring 51 into the connecting groove 52. The limiting block 54 is pushed out of the spring groove 53 by the elastic deformation of the spring 55 and limits the position of the first connecting ring 25 in cooperation with the connecting groove 52. When the cleaning brush 3 needs to be replaced, the pull rod 7 is pulled to move the movable groove 61 into the counterbore 64. When the movable groove 61 moves, the steel ball 63 in the steel ball groove 62 is pushed by the inner wall of the movable groove 61. The steel ball 63 can gradually enter the connecting groove 52 and push the limiting block 54 into the spring groove 53. The limiting block 54 can press the spring 55 and enter the spring groove 53. Since the limiting block 54 no longer limits the position of the second connecting ring 51 in cooperation with the connecting groove 52, the first connecting ring 25 can drive the second connecting ring 51 to move out of the connecting groove 52. The first connecting ring 25 drives the cleaning brush 3 to be taken out of the ash conveying pipeline body 1 for replacement through the mounting plate 26.

[0047] In order to more conveniently insert the second connecting ring 51 into the connecting groove 52, the surface of the limiting block 54 is inclined. The outer wall of the connecting groove 52 is provided with an inclined surface matched with the outer wall of the limiting block 54. When the first connecting ring 25 drives the second connecting ring 51 to be inserted into the connecting groove 52, the limiting block 54 can move into the spring groove 53 under the push of the inclined surface of the connecting groove 52 when it contacts with the outer wall of the connecting groove 52, thereby temporarily releasing the limitation of the position of the second connecting ring 51 by the limiting block 54.

[0048] A limiting ring 81 is integrally formed at the end of the plurality of groups of pull rods 7, and a second rotating ring 82 is sleeved on the surface of the limiting ring 81. A threaded groove 83 is integrally formed on the outer wall of the first connecting ring 25 near one side of the second rotating ring 82, and the second rotating ring 82 is embedded in the threaded groove 83. The inner wall of the threaded groove 83 and the outer wall of the second rotating ring 82 are both provided with threads and are engaged with each other. By rotating the second rotating ring 82, the second rotating ring 82 is rotated and moved outward under the limitation of the threaded groove 83. The second rotating ring 82 rotates on the surface of the limiting ring 81 and pulls the limiting ring 81 to move outward. The limiting ring 81 can be pulled by the pull rod 7 to move the movable groove 61. At the same time, under the limitation of the threaded groove 83 and the threads of the second rotating ring 82, the spring 55 cannot be elastically deformed to restore the pushing of the limiting block 54 to pop out and push the movable groove 61 to reset itself, facilitating the disassembly of the first connecting ring 25 by the staff.

[0049] A plurality of groups of groove holes 9 are equidistantly formed on the outer surface of the second rotating ring 82. Through this design, when the staff rotates the second rotating ring 82, the fingers can be inserted into the groove holes 9 formed on the surface of the second rotating ring 82. The contact area between the fingers and the second rotating ring 82 is increased, so as to increase the friction generated when the second rotating ring 82 is rotated, thereby preventing slipping.

[0050] The installation method of the pipeline dredging mechanism of the positive and negative pressure integrated pneumatic ash conveying system is as follows:

[0051] S1, move the first connecting ring 25, so that the first connecting ring 25 drives the limiting block 54 to contact the outer wall of the connecting groove 52. Under the pushing of the connecting groove 52, the limiting block 54 is received in the spring groove 53, so that the second connecting ring 51 can be smoothly inserted into the connecting groove 52. At the same time, the limiting block 54 is pushed out of the spring groove 53 by the spring 55 and cooperates with the connecting groove 52 to limit the position of the first connecting ring 25. The installation of the first connecting ring 25 is completed.

[0052] S2, move the communication pipe 10, so that the communication pipe 10 drives the transmission ring 24 to be inserted into the first connecting ring 25. The teeth 27 provided on the first connecting ring 25 are engaged with the tooth groove 28 formed on the transmission ring 24, so that the transmission can be achieved. Then, the communication pipe 10 and the two side ash conveying pipeline bodies 1 are fixed by bolts. The installation of the ash conveying pipeline body 1 and the two groups of communication pipes 10 is completed.

[0053] S3, start the air source device, high-speed airflow carries dust through the ash conveying pipeline body 1 to transport, when the air flows through the communication pipe 10, the impeller 23 is driven to rotate, the first connecting ring 25 drives the first connecting ring 25 to rotate through the transmission ring 24, the first connecting ring 25 drives the second connecting ring 51 to rotate under the limitation of the connecting groove 52, and the first connecting ring 25 drives the cleaning brush 3 to clean the dust attached to the inner wall of the ash conveying pipeline body 1 through the mounting plate 26;

[0054] S4, when the cleaning brush 3 needs to be replaced, the second rotating ring 82 is rotated by the notch hole 9, the second rotating ring 82 is rotated under the limitation of the threaded groove 83 and pulls the pull rod 7 through the limiting ring 81, the movable groove 61 is pulled into the counterbore 64 by the pull rod 7, the movable groove 61 pushes the steel ball 63 to move in the steel ball groove 62 through the inner wall thereof when moving, the limiting block 54 is pushed into the spring groove 53 with the movement of the steel ball 63, the limiting block 54 no longer cooperates with the connecting groove 52 to limit the position of the second connecting ring 51, the first connecting ring 25 can drive the second connecting ring 51 to be removed from the connecting groove 52, and the first connecting ring 25 drives the cleaning brush 3 to be taken out from the ash conveying pipeline body 1 through the mounting plate 26 to be replaced.

[0055] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0056] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, the above embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A pipe clearing mechanism for an integrated positive and negative pressure pneumatic ash conveying system, comprising an ash conveying pipe body (1), a cleaning brush (3), and a connecting pipe (10), wherein the ash conveying pipe body (1) is fixedly installed at both ends of the connecting pipe (10), characterized in that: The inner walls of the connecting pipe (10) are connected to the inner walls of the two sets of ash conveying pipe bodies (1) near the connecting pipe (10) at both ends, and a rotating mechanism is fixedly installed on the rotating mechanism. The cleaning brush (3) rotates against the inner wall of the ash conveying pipe body (1) through the rotating mechanism. The rotating mechanism includes a rotating groove (21) formed together at both ends of the inner wall of the connecting pipe (10), and a first rotating ring (22) is rotatably arranged inside the rotating groove (21). An impeller (23) is fixedly installed in the middle of the first rotating ring (22), and a transmission ring (24) is integrally formed on the outer surface of the impeller (23). A first connecting ring (25) is sleeved on the surface of the transmission ring (24). The first connecting ring (25) is inserted into the ash conveying pipe body (1). Several sets of mounting plates (26) are equidistantly mounted on the outer surface of the first connecting ring (25), and cleaning brushes (3) are fixedly mounted on the mounting plates (26). Several sets of ball grooves (41) are equidistantly opened on both sides of the outer wall of the first rotating ring (22), and rolling balls (42) are embedded in the ball grooves (41). Annular rolling grooves (43) are opened on both sides of the inner wall of the rotating groove (21), and the outer walls of the balls (42) are in contact with the inner walls of the rolling grooves (43). The first connecting ring (25) is fixedly installed on the inner wall of the ash conveying pipe body (1) by a limiting mechanism, which includes... A connecting groove (52) is integrally formed on the inner wall of the ash conveying pipe body (1), and a second connecting ring (51) is rotatably arranged inside the connecting groove (52). The outer end of the second connecting ring (51) is connected to the first connecting ring (25). Several sets of teeth (27) are equidistantly arranged around the outer surface of the first connecting ring (25). Several sets of tooth grooves (28) that mesh with the first connecting ring (25) are opened on the side surface of the transmission ring (24) near the first connecting ring (25). The second connecting ring (51) and the connecting groove (52) are connected by a locking mechanism. The locking mechanism includes several sets of spring grooves (53) opened on the inner surface of the second connecting ring (51). A limiting block (54) is provided through the surface of the spring groove (53), and a spring (55) is connected inside the spring groove (53). The other end of the spring (55) is connected to the inner end of the limiting block (54). A steel ball groove (62) is provided at the corresponding position of the connecting groove (52) and the limiting block (54). A steel ball (63) is movably embedded inside the steel ball groove (62). A movable groove (61) is provided on the bottom surface of the steel ball (63). The inner wall of the movable groove (61) is set as an arc surface that cooperates with the steel ball (63). As the movable groove (61) moves, the steel ball (63) can pass through the steel ball groove (62) and push the limiting block (54) into the spring groove (53).Several sets of tie rods (7) are fixedly installed on the surface of the movable groove (61) near the first connecting ring (25). The tie rods (7) all penetrate the surface of the first connecting ring (25) and limit the movable groove (61). The outer wall of the first connecting ring (25) near the movable groove (61) is provided with a countersunk hole (64) that cooperates with the movable groove (61). The surfaces of the limiting blocks (54) are all inclined. The outer walls of the connecting groove (52) are all set as inclined surfaces that fit against the outer walls of the limiting blocks (54). A limiting ring (81) is integrally formed at the end of the pull rod (7), and a second rotating ring (82) is sleeved on the surface of the limiting ring (81). A threaded groove (83) is integrally formed on the outer wall of the first connecting ring (25) near the second rotating ring (82), and the second rotating ring (82) is embedded in the threaded groove (83). The inner wall of the threaded groove (83) and the outer wall of the second rotating ring (82) are both provided with threads and mesh with each other. Several sets of slots (9) are equidistantly opened on the outer surface of the second rotating ring (82).

2. The method of using the pipeline unblocking mechanism of the integrated positive and negative pressure pneumatic ash conveying system according to claim 1, characterized in that: S1. Move the first connecting ring (25) so that the first connecting ring (25) drives the limiting block (54) to contact the outer wall of the connecting groove (52) through the second connecting ring (51). Under the push of the connecting groove (52), the limiting block (54) is retracted into the spring groove (53), so that the second connecting ring (51) can be smoothly inserted into the connecting groove (52). At the same time, the limiting block (54) pops out from the spring groove (53) through the spring (55) and cooperates with the connecting groove (52) to limit the position of the first connecting ring (25). The installation of the first connecting ring (25) is completed. S2. Move the connecting pipe (10) so that the connecting pipe (10) drives the transmission ring (24) to insert into the first connecting ring (25). The teeth (27) on the first connecting ring (25) mesh with the tooth groove (28) on the transmission ring (24) to enable transmission. Then, fix the connecting pipe (10) to the ash conveying pipe body (1) on both sides with bolts. The ash conveying pipe body (1) and the two sets of connecting pipes (10) are installed. S3. Start the air source device. The high-speed airflow carries the dust through the ash conveying pipe body (1) for transportation. When the air flows through the connecting pipe (10), it drives the impeller (23) to rotate. The impeller (23) drives the first connecting ring (25) to rotate through the transmission ring (24). The first connecting ring (25) drives the second connecting ring (51) to rotate under the restriction of the connecting groove (52). At the same time, the first connecting ring (25) drives the cleaning brush (3) through the mounting plate (26) to clean the dust attached to the inner wall of the ash conveying pipe body (1). S4. When the cleaning brush (3) needs to be replaced, the slot hole (9) is engaged to make the second rotating ring (82) rotate. The second rotating ring (82) rotates under the restriction of the threaded groove (83) and pulls the pull rod (7) through the limit ring (81). The pull rod (7) pulls the movable groove (61) into the countersunk hole (64). When the movable groove (61) moves, it pushes the steel ball (63) to move inside the steel ball groove (62) through its inner wall. As the steel ball (63) moves, the limit block (54) is pushed into the spring groove (53). The limit block (54) no longer cooperates with the connecting groove (52) to restrict the position of the second connecting ring (51). The first connecting ring (25) can drive the second connecting ring (51) to be removed from the connecting groove (52). The first connecting ring (25) drives the cleaning brush (3) to be taken out from the ash conveying pipe body (1) for replacement through the mounting plate (26).

Images