Pneumatic conveying pipeline capable of cleaning inner wall

Abstract

The utility model relates to the technical field of pneumatic conveying, in particular to a pneumatic conveying pipeline with a cleanable inner wall, which comprises a pneumatic conveying pipeline, an outer sleeve is movably mounted in the pneumatic conveying pipeline, an inner adjusting rod is sleeved in the outer sleeve, one end of the outer sleeve is provided with a transmission sleeve, and the other end of the transmission sleeve is provided with an inner adjusting rod. A plurality of driving blades are arranged on the peripheral side of the transmission sleeve, and one end of each driving blade is fixedly sleeved with a driven bevel gear located in the transmission sleeve. According to the pneumatic conveying pipeline capable of cleaning the inner wall, a medium flowing in the pneumatic conveying pipeline pushes a driving blade to drive a transmission sleeve and an outer sleeve to rotate, a cleaning mechanism is driven to rotate through transmission of a connecting support, and the inner wall of the pneumatic conveying pipeline can be automatically cleaned under the condition that the pneumatic conveying pipeline is not disassembled; a conveying medium is prevented from being adhered to the inner wall of the pneumatic conveying pipeline to influence conveying efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic conveying, in particular to a pneumatic conveying pipeline with an inner wall that can be cleaned. Background Art

[0002] Pneumatic conveying, also known as air flow conveying, uses the energy of air flow to convey granular materials in the direction of air flow in a closed pipe. It is a specific application of fluidization technology. The pneumatic conveying device has a simple structure and is easy to operate. It can be used for horizontal, vertical or inclined conveying. In the process of using pipelines for pneumatic ash conveying, the dust will adhere to the inner wall of the pipeline due to its own adsorption force. Under the long-term adsorption of dust, the dust on the inner wall of the pipeline will increase, which may cause the pipeline to be blocked, causing the pipeline for pneumatic ash conveying to be unable to be used normally.

[0003] Upon checking, it is found that the disclosure (announcement) number: CN215918515U discloses a pneumatic ash conveying pipeline cleaning device, and this technology discloses "including a workbench and an ash conveying pipe, wherein the top side of the workbench is provided with side panels near the front surface and the rear surface, a support plate is provided at the middle position of the top of the workbench, the ash conveying pipe is provided at the top of the workbench away from the side panel through a support seat, and winding wheels are provided at the side panels on both sides near the top through a rotating shaft"; the utility model achieves the effect of cleaning the inner wall of the ash conveying pipe by arranging a cleaning brush and a scraper, a cleaning brush is arranged at the end position of the output shaft of the motor B, a connecting seat is arranged at the middle position of the outer surface of the output shaft of the motor B, a buffer seat is arranged at the middle position of the top and the middle position of the bottom of the outer surface of the connecting seat, a support rod is arranged at the end position of the buffer seat, and scrapers are arranged at the end positions of the support rods on both sides, so as to simplify the cleaning mechanism.

[0004] Although this application can achieve the cleaning of the inner wall of the pneumatic conveying pipeline through the mutual cooperation of various structures, it is mainly done manually during cleaning, and it is necessary to stop the machine and disassemble the pneumatic conveying pipeline, which affects the normal operation of the pipeline transportation work and causes the pipeline transportation efficiency to decrease. For this reason, we propose a pneumatic conveying pipeline with a cleanable inner wall to solve the above problems. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a pneumatic conveying pipeline with an inner wall that can be cleaned, and the inner wall can be automatically cleaned when the pneumatic conveying pipeline is running.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pneumatic conveying pipeline with an inner wall that can be cleaned, comprising a pneumatic conveying pipeline, an outer sleeve movably installed inside the pneumatic conveying pipeline, and an inner adjusting rod is installed inside the outer sleeve, a transmission sleeve is arranged at one end of the outer sleeve, and a plurality of driving blades are arranged on the circumferential side of the transmission sleeve, one end of the driving blade is fixedly installed with a driven bevel gear located inside the transmission sleeve, one end of the inner adjusting rod is fixedly installed with 8, and the other end is fixedly installed with a transmission bevel gear, one end of the outside of the pneumatic conveying pipeline is fixedly installed with a servo motor, and an active bevel gear is fixedly installed on the output shaft of the servo motor, and a plurality of cleaning mechanisms are arranged outside the outer sleeve.

[0007] As a preferred embodiment of the utility model, a pneumatic conveying pipeline with a cleanable inner wall is provided with flange one at one end of the pneumatic conveying pipeline and flange two at the other end, and flange one and flange two are both provided with connecting arms that cooperate with the outer sleeve, and the connecting arm is movably mounted on the end of the outer sleeve, and the position of the outer sleeve is restricted by flange one and flange two to ensure that the outer sleeve can rotate stably. When the pneumatic conveying pipeline is installed, flange one and flange two can be installed at the connection position between the pneumatic conveying pipeline and the external pipeline by bolts.

[0008] As a preferred embodiment of the utility model of a pneumatic conveying pipeline with a cleanable inner wall, the outer sleeve and the transmission sleeve are fixedly connected by screws, a plurality of connecting bearings are nested inside the outer sleeve, the inner adjusting rod is movably installed inside the outer sleeve through the connecting bearings, and the transmission sleeve and the outer sleeve are connected by screws to ensure that the two are firmly connected and facilitate the disassembly and assembly of the transmission sleeve.

[0009] As a preferred embodiment of the utility model of a pneumatic conveying pipeline capable of cleaning the inner wall, a mounting seat cooperating with a driving blade is arranged on the circumferential side of the transmission sleeve, and the driven bevel gear at the end of the driving blade is located on the circumferential side of the adjusting bevel gear, and the outer edge of the driven bevel gear is meshed with the adjusting bevel gear. The adjusting bevel gear and the driven bevel gear are driven to rotate by the inner adjusting rod, and the inclination angles of multiple driving blades can be adjusted. When the angle between the driving blade as a whole and the flow direction of the medium is 40-50°, the flow of the medium can push the driving blade to drive the outer sleeve and the cleaning mechanism to rotate.

[0010] As a preferred embodiment of the utility model, a pneumatic conveying pipeline with a cleanable inner wall, the outer edge of the active bevel gear is meshed with the transmission bevel gear, and the angle between the central axis of the active bevel gear and the central axis of the transmission bevel gear is 90°. After the pneumatic conveying pipeline is cleaned, the active bevel gear, the transmission bevel gear and the inner adjustment rod are driven by a servo motor to rotate, and the inclination angle of the driving blades is adjusted to make the driving blades parallel to the flow direction of the medium, thereby avoiding the driving blades from affecting the flow of the medium during the non-cleaning stage.

[0011] As a preferred embodiment of the utility model, a pneumatic conveying pipeline with an inner wall that can be cleaned, the outer fixed sleeve of the outer sleeve is provided with a connecting bearing, and the cleaning mechanism is fixedly installed on the peripheral side of the outer sleeve through a connecting bracket. The cleaning mechanism is installed through the connecting bracket to ensure that the cleaning mechanism is firmly installed on the peripheral side of the outer sleeve. During cleaning, the inner wall of the pneumatic conveying pipeline can be effectively cleaned by cooperating with several cleaning mechanisms.

[0012] As a preferred embodiment of the utility model for a pneumatic conveying pipeline with an inner wall that can be cleaned, the cleaning mechanism includes a mounting sleeve, a cleaning brush plate, a positioning rod and a compression spring. The mounting sleeve is fixedly connected to the connecting bracket, and the cleaning brush plate is clamped in the interior of the mounting sleeve. The compression spring applies elastic force to the cleaning brush plate, so that the cleaning brush plate can be close to the inner wall of the pneumatic conveying pipeline, thereby improving the cleaning effect of the inner wall of the pneumatic conveying pipeline.

[0013] As a preferred embodiment of the utility model for a pneumatic conveying pipe with an inner wall that can be cleaned, a plurality of positioning rods are arranged on one side of the cleaning brush plate close to the inside of the mounting sleeve, and a compression spring is sleeved on the outside of the positioning rods. The cross-sectional shape of the cleaning brush plate is a "T" shape. The compression spring is restricted by the positioning rods to prevent it from falling off, thereby ensuring that the compression spring can stably apply elastic force to the cleaning brush plate, so that the cleaning brush plate is close to the inner wall of the pneumatic conveying pipe, and the inner wall of the pneumatic conveying pipe is effectively cleaned.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The pneumatic conveying pipeline with cleanable inner wall can drive the driving blades to drive the transmission sleeve and the outer sleeve to rotate through the medium flowing inside the pneumatic conveying pipeline, and drive the cleaning mechanism to rotate through the connecting bracket transmission. The inner wall of the pneumatic conveying pipeline can be automatically cleaned without disassembling the pneumatic conveying pipeline, so as to avoid the conveying medium adhering to the inner wall of the pneumatic conveying pipeline and affecting the conveying efficiency. After the pneumatic conveying pipeline is cleaned, the servo motor drives the active bevel gear, the transmission bevel gear and the inner adjusting rod to rotate, and the inclination angle of the driving blade is adjusted to make the driving blade parallel to the flow direction of the medium, so as to avoid the driving blade affecting the medium flow in the non-cleaning stage.

[0016] 2. The pneumatic conveying pipeline with cleanable inner wall can effectively clean the inner wall of the pneumatic conveying pipeline by arranging a plurality of cleaning mechanisms in the pneumatic conveying pipeline. The plurality of cleaning mechanisms cooperate with each other during cleaning. A compression spring is arranged in the mounting sleeve, and elastic force is applied to the cleaning brush plate by the compression spring, so that the cleaning brush plate can be closely attached to the inner wall of the pneumatic conveying pipeline, thereby further improving the cleaning effect of the inner wall of the pneumatic conveying pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model after overall assembly;

[0019] Figure 2 This is a schematic structural diagram of the cross section of the pneumatic conveying pipeline of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the outer sleeve of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the cross section of the outer sleeve and the transmission sleeve of the utility model;

[0022] Figure 5 For this utility model Figure 4 A schematic diagram of the structure enlarged at A;

[0023] Figure 6 It is a structural schematic diagram of the cleaning mechanism of the utility model.

[0024] In the figure:

[0025] 1. Pneumatic conveying pipeline; 2. Flange 1; 3. Flange 2; 4. Outer sleeve; 5. Connecting bearing; 6. Inner adjusting rod; 7. Transmission sleeve; 8. Adjusting bevel gear; 9. Driving blade; 10. Driven bevel gear; 11. Transmission bevel gear; 12. Servo motor; 13. Active bevel gear; 14. Connecting bracket; 15. Cleaning mechanism; 151. Mounting bracket; 152. Cleaning brush plate; 153. Positioning plug rod; 154. Compression spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] like Figure 1-Figure 6 As shown; a pneumatic conveying pipeline with a cleanable inner wall, comprising a pneumatic conveying pipeline 1.

[0029] In this implementation scheme: After checking the public announcement number: CN215918515U discloses a pneumatic ash conveying pipeline cleaning device, this technology discloses "including a workbench and an ash conveying pipe, wherein a side panel is installed at one side of the top of the workbench near the front surface and the rear surface, a support plate is installed at the middle position of the top of the workbench, the ash conveying pipe is installed through a support seat at the side of the top of the workbench away from the side panel, and winding wheels are installed at the side panels on both sides near the top through a rotating shaft"; the utility model achieves the effect of cleaning the inner wall of the ash conveying pipe by arranging a cleaning brush and a scraper, a cleaning brush is arranged at the end position of the output shaft of the motor B, a connecting seat is arranged at the middle position of the outer surface of the output shaft of the motor B, a buffer seat is arranged at the middle position of the top and the middle position of the bottom of the outer surface of the connecting seat, a support rod is arranged at the end position of the buffer seat, and scrapers are arranged at the end positions of the support rods on both sides to solve the problem of simple cleaning mechanism.

[0030] Although this application can achieve the cleaning of the inner wall of the pneumatic conveying pipeline through the mutual cooperation of various structures, it is mainly done manually during cleaning, and it is necessary to stop the machine and disassemble the pneumatic conveying pipeline, which affects the normal operation of the pipeline transportation work and causes the pipeline transportation efficiency to decrease. In view of this, in order to solve this technical problem, an outer sleeve 4, an inner adjustment rod 6, a drive blade 9 and a cleaning mechanism 15 are added to the application document.

[0031] According to the above content, in order to be able to automatically clean the inner wall when the pneumatic conveying pipeline is in operation, an outer sleeve 4 is movably installed inside the pneumatic conveying pipeline 1, and an inner adjusting rod 6 is installed inside the outer sleeve 4, a transmission sleeve 7 is provided at one end of the outer sleeve 4, and a plurality of driving blades 9 are provided on the circumferential side of the transmission sleeve 7, one end of the driving blade 9 is fixedly installed with a driven bevel gear 10 located inside the transmission sleeve 7, one end of the inner adjusting rod 6 is fixedly installed with 8, and the other end is fixedly installed with a transmission bevel gear 11, a servo motor 12 is fixedly installed at one end outside the pneumatic conveying pipeline 1, and an active bevel gear 13 is fixedly installed on the output shaft of the servo motor 12, and a plurality of cleaning mechanisms 15 are provided outside the outer sleeve 4.

[0032] In this embodiment, the medium flowing inside the pneumatic conveying pipeline 1 drives the driving blade 9 to drive the transmission sleeve 7 and the outer sleeve 4 to rotate, and the cleaning mechanism 15 is driven to rotate through the connecting bracket 14, so that the inner wall of the pneumatic conveying pipeline 1 can be automatically cleaned without disassembling the pneumatic conveying pipeline 1;

[0033] When the outer sleeve 4 drives the cleaning mechanism 15 to clean the inner wall of the pneumatic conveying pipe 1, the compression spring 154 applies elastic force to the cleaning brush plate 152, so that the cleaning brush plate 152 can be close to the inner wall of the pneumatic conveying pipe 1, thereby improving the cleaning effect of the inner wall of the pneumatic conveying pipe 1.

[0034] In an optional embodiment: a flange 1 2 is provided at one end of the pneumatic conveying pipeline 1, and a flange 2 3 is provided at the other end, and both flange 1 2 and flange 2 3 are provided with connecting arms that cooperate with the outer sleeve 4, and the connecting arms are movably mounted on the end of the outer sleeve 4.

[0035] In this embodiment: the position of the outer sleeve 4 is limited by flange 1 2 and flange 2 3 to ensure that the outer sleeve 4 is firmly installed inside the pneumatic conveying pipeline 1 and the outer sleeve 4 can rotate stably, thereby achieving effective cleaning of the inner wall of the pneumatic conveying pipeline 1.

[0036] In an optional embodiment: the outer sleeve 4 is fixedly connected to the transmission sleeve 7 by screws, a plurality of connecting bearings 5 ​​are nested inside the outer sleeve 4, and the inner adjusting rod 6 is movably installed inside the outer sleeve 4 through the connecting bearings 5.

[0037] In this embodiment, the inner adjusting rod 6 is installed by connecting the bearing 5 to ensure that the inner adjusting rod 6 is firmly installed inside the outer sleeve 4, and the inner adjusting rod 6 can rotate stably, thereby realizing stable adjustment of the inclination angle of the driving blade 9.

[0038] In an optional embodiment: a mounting seat cooperating with the driving blade 9 is provided on the circumferential side of the transmission sleeve 7, the driven bevel gear 10 at the end of the driving blade 9 is located on the circumferential side of the adjusting bevel gear 8, and the outer edge of the driven bevel gear 10 is meshed with the adjusting bevel gear 8.

[0039] In this embodiment: the inner adjustment rod 6 drives the adjustment bevel gear 8 and the driven bevel gear 10 to rotate, so that the inclination angles of multiple driving blades 9 can be adjusted. When the angle between the driving blade 9 as a whole and the medium flow direction is 40-50°, the medium flow can drive the driving blade 9 to drive the outer sleeve 4 and the cleaning mechanism 15 to rotate, so as to clean the inner wall of the pneumatic conveying pipeline 1.

[0040] In an optional embodiment, the outer edge of the active bevel gear 13 meshes with the transmission bevel gear 11 , and the angle between the center axis of the active bevel gear 13 and the center axis of the transmission bevel gear 11 is 90°.

[0041] In this embodiment: the servo motor 12 drives the active bevel gear 13 and the transmission bevel gear 11 to rotate, which can then drive the inner adjustment rod 6 and the adjustment bevel gear 8 to rotate, and adjust the inclination angle of the drive blade 9. The servo motor 12 is a common existing technology, and a product of Siemens can be selected. A brake is provided on it, and the output shaft can be locked after the servo motor 12 is adjusted.

[0042] In an optional embodiment, the outer portion of the outer sleeve 4 is fixedly sleeved with a connecting bearing 5 , and the cleaning mechanism 15 is fixedly mounted on the circumference of the outer sleeve 4 via a connecting bracket 14 .

[0043] In this embodiment: the cleaning mechanism 15 is installed by connecting the bracket 14 to ensure that the cleaning mechanism 15 is firmly installed on the 4 sides of the outer sleeve, and the cleaning mechanism 15 can be close to the inner wall of the pneumatic conveying pipeline 1 to achieve effective cleaning of the inner wall of the pneumatic conveying pipeline 1.

[0044] In an optional embodiment: the cleaning mechanism 15 includes a mounting sleeve 151, a cleaning brush plate 152, a positioning rod 153 and a compression spring 154, the mounting sleeve 151 is fixedly connected to the connecting bracket 14, and the cleaning brush plate 152 is clamped inside the mounting sleeve 151.

[0045] In this embodiment, elastic force is applied to the cleaning brush plate 152 by means of the compression spring 154 , so that the cleaning brush plate 152 can be closely attached to the inner wall of the pneumatic conveying pipe 1 , thereby improving the cleaning effect on the inner wall of the pneumatic conveying pipe 1 .

[0046] In an optional embodiment: a plurality of positioning rods 153 are provided on one side of the cleaning brush plate 152 close to the inside of the mounting sleeve 151, and a compression spring 154 is sleeved on the outside of the positioning rod 153, and the cross-sectional shape of the cleaning brush plate 152 is a "T" shape.

[0047] In this embodiment: the compression spring 154 is restricted by the positioning rod 153 to prevent the compression spring 154 from falling off, ensuring that the compression spring 154 can stably apply elastic force to the cleaning brush plate 152, and restricting the cross-sectional shape of the cleaning brush plate 152 to prevent the cleaning brush plate 152 from falling off along the inside of the mounting sleeve 151.

[0048] The working principle and use process of the utility model: when it is necessary to clean the inner wall of the pneumatic conveying pipeline 1, the servo motor 12 drives the active bevel gear 13, the transmission bevel gear 11, the inner adjustment rod 6, and the adjustment bevel gear 8 to rotate, thereby driving multiple sets of driven bevel gears 10 and the driving blades 9 to rotate, and adjusting the inclination angle of the driving blades 9 so that the angle between the driving blades 9 as a whole and the flow direction of the medium inside the pneumatic conveying pipeline 1 is 40-50°. The driving blades 9 are pushed by the flowing medium to drive the transmission sleeve 7 and the outer sleeve 4 to rotate, and the transmission is driven by the connecting bracket 14 to drive the multiple cleaning mechanisms 15 to rotate, so as to clean the inner wall of the pneumatic conveying pipeline 1, and the cleaning brush plate 152 is applied with elastic force by the compression spring 154 so that the cleaning brush plate 152 can be close to the inner wall of the pneumatic conveying pipeline 1 , improving the cleaning effect of the inner wall of the pneumatic conveying pipeline 1; the servo motor 12 is provided with a brake structure. After the outer sleeve 4 is adjusted, the output shaft of the servo motor 12 is locked by the brake, thereby ensuring the stability of the adjusting bevel gear 8 after the position is adjusted, and limiting the driven bevel gear 10 to prevent the driven bevel gear 10 and the driving blade 9 from rotating axially after adjustment, thereby ensuring the stability of the driving blade 9 after the inclination angle is adjusted. At the same time, the driving blade 9 is pushed by the flowing medium to drive the driven bevel gear 10 to rotate axially along the adjusting bevel gear 8 at the end face of the adjusting bevel gear 8, thereby providing power for the rotation of the cleaning mechanism 15; after the cleaning is completed, the driving blade 9 is adjusted and reset by the servo motor 12, so that the driving blade 9 is parallel to the medium flow direction as a whole, thereby avoiding the driving blade 9 affecting the medium flow in the non-cleaning stage.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pneumatic conveying pipeline with a cleanable inner wall, comprising a pneumatic conveying pipeline (1), characterized in that: An outer sleeve (4) is movably mounted inside the pneumatic conveying pipeline (1), and an inner adjustment rod (6) is mounted inside the outer sleeve (4); a transmission sleeve (7) is arranged at one end of the outer sleeve (4), and a plurality of driving blades (9) are arranged on the peripheral side of the transmission sleeve (7); a driven bevel gear (10) located inside the transmission sleeve (7) is fixedly mounted on one end of the driving blade (9); a gear (8) is fixedly mounted on one end of the inner adjustment rod (6), and a transmission bevel gear (11) is fixedly mounted on the other end; a servo motor (12) is fixedly mounted on one end of the outside of the pneumatic conveying pipeline (1), and an active bevel gear (13) is fixedly mounted on the output shaft of the servo motor (12); and a plurality of cleaning mechanisms (15) are arranged outside the outer sleeve (4).

2. A pneumatic conveying pipeline with a cleanable inner wall according to claim 1, characterized in that: The pneumatic conveying pipeline (1) is provided with a flange plate 1 (2) at one end and a flange plate 2 (3) at the other end, and both flange plate 1 (2) and flange plate 2 (3) are provided with connecting arms that cooperate with an outer sleeve (4), and the connecting arms are movably sleeved on the end of the outer sleeve (4).

3. A pneumatic conveying pipeline with cleanable inner wall according to claim 1, characterized in that: The outer sleeve (4) and the transmission sleeve (7) are fixedly connected by screws, a plurality of connecting bearings (5) are nested inside the outer sleeve (4), and the inner adjustment rod (6) is movably installed inside the outer sleeve (4) through the connecting bearings (5).

4. A pneumatic conveying pipeline with a cleanable inner wall according to claim 1, characterized in that: A mounting seat cooperating with the driving blade (9) is arranged on the peripheral side of the transmission sleeve (7); a driven bevel gear (10) at the end of the driving blade (9) is located on the peripheral side of the adjusting bevel gear (8), and the outer edge of the driven bevel gear (10) is meshed with the adjusting bevel gear (8).

5. A pneumatic conveying pipeline with cleanable inner wall according to claim 1, characterized in that: The outer edge of the active bevel gear (13) meshes with the transmission bevel gear (11), and the angle between the central axis of the active bevel gear (13) and the central axis of the transmission bevel gear (11) is 90°.

6. A pneumatic conveying pipeline with cleanable inner wall according to claim 1, characterized in that: The outer portion of the outer sleeve (4) is fixedly sleeved with a connecting bearing (5), and the cleaning mechanism (15) is fixedly mounted on the circumferential side of the outer sleeve (4) via a connecting bracket (14).

7. A pneumatic conveying pipeline with cleanable inner wall according to claim 6, characterized in that: The cleaning mechanism (15) comprises a mounting sleeve (151), a cleaning brush plate (152), a positioning rod (153) and a compression spring (154); the mounting sleeve (151) is fixedly connected to the connecting bracket (14); and the cleaning brush plate (152) is clamped inside the mounting sleeve (151).

8. A pneumatic conveying pipeline with cleanable inner wall according to claim 7, characterized in that: A plurality of positioning rods (153) are arranged on one side of the cleaning brush plate (152) close to the inside of the mounting sleeve (151), and a compression spring (154) is sleeved on the outside of the positioning rods (153). The cross-sectional shape of the cleaning brush plate (152) is a "T" shape.

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