Alkali-activated cement coating and lining machine

Abstract

The invention belongs to the field of cast pipe manufacturing, and discloses an alkali-activated cement lining coating machine which comprises a working frame, a lining coating assembly and a smoothing assembly. A multi-head pipeline is rotationally connected to the upper end of the working frame, a driving assembly is arranged below the multi-head pipeline, a gear ring is fixed to one side of the annular guide rail, long teeth are fixed to the outer side of the gear ring, and short teeth are arranged on the right sides of the long teeth; the telescopic assembly comprises a threaded rod penetrating through the inner side of the dustproof shell, a first gear is fixed to the end, close to the gear ring, of the threaded rod, a second gear is arranged on the right side of the first gear, the upper end of the second gear is meshed with an idle gear, and the other end of the threaded rod is in threaded connection with a telescopic sleeve. And a flattening assembly is fixed to the output end of the telescopic assembly, the flattening assembly is arranged at the penetrating position of the spraying pipes, and the flattening assembly is promoted to conduct independent lining coating on the corners of the multi-head pipelines through rotating force generated when the multi-head pipelines revolve, so that the uniformity of the inflection points is improved.

Description

Technical Field

[0001] The present invention belongs to the field of cast pipe manufacturing, and in particular relates to an alkali-activated cement lining machine. Background Art

[0002] In the production of ductile iron pipes, cement needs to be lined on the inner wall of the pipe for corrosion protection. The cement lining machine is a device used for lining cement. Alkali-activated cement is sprayed on the inner wall of the pipe through the lining machine, and the centrifugal force of the pipe rotation is used to adsorb the cement on the inner wall of the pipe.

[0003] In some construction projects, due to the need to be buried underground or to transport hot gas, the flange connection is prone to leakage due to thermal expansion and contraction, so multi-head cement pipes are needed to improve their air tightness.

[0004] However, when lining the inner wall of a multi-head pipe, the centrifugal force distribution of the inner wall is uneven, and for branched pipes, multiple insertions, installations and linings are required, which makes the operation complicated. In addition, during multiple lining processes, excess cement will be thrown into the pipes beside during the rotation of the pipes, and inserting multiple pipes at one time will cause uneven cement at the intersection of the pipes. Summary of the invention

[0005] In view of the deficiencies of the prior art, the purpose of the present invention is to provide an alkali-activated cement lining machine, which solves the problem in the prior art that when lining the inner walls of multiple pipes of a multi-head pipeline is simultaneously performed, the intersection of the pipes is unevenly distributed.

[0006] The purpose of this disclosure can be achieved through the following technical solutions:

[0007] An alkali-activated cement lining machine comprises a working frame, a lining assembly and a smoothing assembly;

[0008] The upper end of the working frame is rotatably connected to a multi-head pipeline, a driving assembly is arranged below the multi-head pipeline, and the coating assembly is located on the inner side of the multi-head pipeline, and a coaxial frame is fixed on the inner side of the multi-head pipeline;

[0009] The coating assembly comprises a main nozzle segment fixedly mounted on the inner side of the coaxial frame, and one end of the main nozzle segment is threadedly connected to a connection seat, and a plurality of connection ports are fixedly arranged on the inner side of the connection seat, and the inner sides of the plurality of connection ports are all threadedly connected to a slave nozzle segment, and the outer sides of the main nozzle segment and the slave nozzle segment are both penetrated with a plurality of nozzles;

[0010] An annular guide rail is fixedly provided on the outer wall of the connecting seat, and a movable seat is slidably connected to the inner side of the annular guide rail, and a gear ring is fixed on one side of the annular guide rail, and long teeth are fixed on the outer side of the gear ring, and short teeth are arranged on the right side of the long teeth;

[0011] A dustproof shell is fixed to the lower end of the movable seat, a telescopic assembly is arranged on the inner side of the dustproof shell, and the telescopic assembly includes a threaded rod penetrating the inner side of the dustproof shell, and a first gear is fixed to one end of the threaded rod close to the gear ring, a second gear is arranged on the right side of the first gear, and an idler gear is meshed at the upper end of the second gear, and a telescopic sleeve is threadedly connected to the other end of the threaded rod, and a smoothing assembly is fixed to the output end of the telescopic assembly.

[0012] In some disclosures, a support frame is provided at the upper end of the working frame, and the upper end of the support frame is an arc-shaped limiting opening, and the curvature of the outer wall of the arc-shaped limiting opening is consistent with the curvature of the outer wall of the main nozzle segment.

[0013] In some disclosures, the driving assembly includes a servo motor, a transmission belt support roller and an axis core, and a plurality of support rollers are rotatably connected above the working frame, and an axis core is coaxially arranged on the inner side of the plurality of support rollers.

[0014] In some disclosures, a servo motor is fixed to the side wall of the work frame, and a transmission belt is arranged between the output end of the servo motor and the shaft core.

[0015] In some disclosures, a through groove is formed through the upper end surface of the dustproof shell.

[0016] In some disclosures, the long teeth and the short teeth are alternately arranged, and the long teeth pass through the through slots to mesh with the first gear, and the short teeth mesh with the idler gear.

[0017] In some disclosures, a sliding protrusion is fixed to a side of the movable seat close to the annular guide rail, and the sliding protrusion is inserted into the inner side of the annular guide rail.

[0018] In some disclosures, the smoothing assembly includes a scraper, a connecting block and a supporting spring, and a connecting block is inserted into the end of the telescopic sleeve away from the dustproof shell, and a supporting spring is arranged on the outside of the connecting block, and a scraper is fixed to the end of the connecting block away from the telescopic sleeve.

[0019] In some disclosures, one end of the telescopic sleeve away from the dustproof shell is threadedly connected with a threaded cap.

[0020] In some disclosures, the lower end surface of the scraper is arc-shaped, and a baffle is fixed around the upper end edge of the scraper.

[0021] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0022] A fixed connection is one where the parts or components are fixed without any relative movement;

[0023] A rotational connection is a connection between parts that allows the parts to rotate relative to each other;

[0024] Threaded connection is a detachable fixed connection with the advantages of simple structure, reliable connection, and convenient assembly and disassembly. It is widely used in the fields of mechanical engineering and connection structures.

[0025] A sliding connection is a connection between parts that allows the parts to slide against each other.

[0026] Beneficial effects of the present disclosure:

[0027] 1. The coating assembly is a multi-section detachable structure, which can be disassembled to adapt to multiple pipes and can coat the inner walls of multiple pipes at the same time.

[0028] 2. A smoothing component is set at the intersection of the spray pipes. The smoothing component uses the rotational force of the multi-pipe revolution to prompt the smoothing component to perform separate coating on the inner wall of the intersection of the multi-pipes, thereby improving the uniformity of the cement coating at the intersection. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 is a schematic diagram of the overall structure of the coating and lining assembly of an embodiment of the present disclosure;

[0031] Figure 2 is a schematic diagram of the overall structure of an embodiment of the present disclosure;

[0032] Figure 3 It is a schematic diagram of the connection structure between the coating and lining assembly and the multi-head pipeline according to an embodiment of the present disclosure;

[0033] Figure 4 It is a schematic diagram of the connection structure of the connection seat and the smoothing component of the embodiment of the present disclosure;

[0034] Figure 5 is a schematic diagram of the connection structure between the smoothing assembly and the gear ring according to an embodiment of the present disclosure;

[0035] Figure 6 is a schematic diagram of the connection structure between the telescopic assembly and the dustproof shell of an embodiment of the present disclosure;

[0036] In the figure: 1, working frame; 101, supporting frame; 102, arc-shaped limit opening; 2, servo motor; 21, transmission belt; 22, supporting roller; 23, shaft core; 3, multi-head pipeline; 4, coating lining assembly; 401, main nozzle segment; 402, slave nozzle segment; 403, connecting seat; 404, nozzle; 411, coaxial frame; 431, connecting opening; 5, annular guide rail; 51, gear ring; 511, long teeth; 512, short teeth; 6, movable seat; 61, sliding protrusion; 7, scraper; 71 , connecting block; 72, supporting spring; 711, baffle; 8, dust cover; 81, through groove; 82, idler wheel; 9, threaded rod; 91, telescopic sleeve; 10, first gear; 11, second gear; 12, threaded cap. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0038] According to the concept of this application, Figures 1 to 6 An embodiment of an alkali-activated cement lining machine is described below. Specifically, the alkali-activated cement lining machine is constructed as a split structure, which has three components, namely, a working frame 1, a lining assembly 4 and a smoothing assembly. The smoothing assembly is provided at the intersection of the multi-pipe 3. The smoothing assembly utilizes the rotational force of the multi-pipe during revolution to prompt the scraper 7 to perform separate lining at the corner of the multi-pipe 3, thereby improving the uniformity at the inflection point.

[0039] Please refer to Figures 1 to 6 , an alkali-activated cement lining machine, comprising a working frame 1, a lining assembly 4 and a smoothing assembly;

[0040] The upper end of the work frame 1 is rotatably connected to the multi-head pipeline 3, a driving assembly is arranged below the multi-head pipeline 3, and the coating assembly 4 is located on the inner side of the multi-head pipeline 3, and a coaxial frame 411 is fixed on the inner side of the multi-head pipeline 3;

[0041] The coating assembly 4 includes a main nozzle segment 401 fixedly mounted on the inner side of a coaxial frame 411, and one end of the main nozzle segment 401 is threadedly connected to a connection seat 403, and a plurality of connection ports 431 are fixedly arranged on the inner side of the connection seat 403, and the inner sides of the plurality of connection ports 431 are all threadedly connected to a slave nozzle segment 402, and the outer sides of the main nozzle segment 401 and the slave nozzle segment 402 are both penetrated with a plurality of nozzles 404;

[0042] An annular guide rail 5 is fixedly provided on the outer wall of the connecting seat 403, and a movable seat 6 is slidably connected to the inner side of the annular guide rail 5, and a gear ring 51 is fixed on one side of the annular guide rail 5, and a long tooth 511 is fixed on the outer side of the gear ring 51, and a short tooth 512 is provided on the right side of the long tooth 511;

[0043] A dustproof shell 8 is fixed to the lower end of the movable seat 6, and a telescopic assembly is arranged on the inner side of the dustproof shell 8, and the telescopic assembly includes a threaded rod 9 that passes through the inner side of the dustproof shell 8, and a first gear 10 is fixed to one end of the threaded rod 9 close to the gear ring 51, a second gear 11 is arranged on the right side of the first gear 10, and an idler gear 82 is meshed at the upper end of the second gear 11, and the other end of the threaded rod 9 is threadedly connected to a telescopic sleeve 91, and a smoothing assembly is fixed to the output end of the telescopic assembly.

[0044] The main nozzle segment 401 is fixed on the inner side of the multi-head pipe 3 directly in front through the coaxial frame 411, and the multi-head pipe 3 is coaxially fixed with the coating lining assembly 4. The connecting seat 403 is threadedly connected to one end of the main nozzle segment 401 located on the inner side of the multi-head pipe 3. There are multiple connecting ports 431 on the connecting seat 403. Multiple slave nozzle segments 402 pass through the multi-head pipe 3 from other directions and are tightened at the connecting ports 431 on the connecting seat 403 through threads. At this time, the connecting seat 403 is located at the intersection of the multi-head pipe 3. The coating lining assembly 4 is set as a multi-section detachable structure, so that it can be easily installed on the multi-head pipe through threaded connection. The interior of the multi-head pipe 3, and when the slave nozzle segment 402 is not installed, the single main nozzle segment 401 can also be used for a single-head straight cylindrical pipe. When in use, the alkali-activated cement is sprayed outward through the nozzle 404 on the coating lining assembly 4, so that it is sprayed on the inner wall of the multi-head pipe 3, and the multi-head pipe 3 and the coating lining assembly 4 are driven to rotate synchronously through the driving assembly. Compared with the traditional cylindrical pipe, the connection ports 431 on both sides of the multi-head pipe 3 protrude outward, resulting in interference between the slave nozzle segment 402 and the inner wall of the multi-head pipe 3, and the coaxial frame 411 is required to make the coating lining assembly 4 and the multi-head pipe 3 rotate coaxially;

[0045] During the rotation of the multi-head pipe 3, the centrifugal force of the multi-head pipe 3 is used to make the cement fit with the inner wall of the multi-head pipe 3, and the cement will slide downward along its inner wall during the rotation of the multi-head pipe 3, so that the cement and the inner wall of the multi-head pipe 3 are evenly fitted. Since the inner wall of the multi-head pipe 3 is in a connected state, when the cement flows to the intersection of the inner wall of the multi-head pipe 3, it will drip downward, thereby destroying the uniformity of the cement on the inner wall of the multi-head pipe 3 at the intersection. Since the connecting seat 403 rotates coaxially with the multi-head pipe 3, during the rotation of the connecting seat 403, The movable seat 6 slides downward along the annular guide rail 5 under the influence of gravity, so that the movable seat 6 is always located directly below the connecting seat 403, and the connecting seat 403 drives the gear ring 51 to rotate coaxially during the rotation process. Since the gear ring 51 is engaged with the first gear 10, the first gear 10 and the threaded rod 9 are driven to rotate. During the rotation process of the inner threaded rod 9, the thread and the thread inside the telescopic sleeve 91 push the telescopic sleeve 91 to extend outward, and the teeth on the outer side of the gear ring 51 are divided into long teeth 511 and short teeth 512. The long teeth 511 and the short teeth 512 are in the same direction. The gear ring 51 is provided with multiple sections, which are alternately distributed. When a section of long teeth 511 is meshed with the first gear 10, the short teeth 512 are meshed with the idler wheel 82 and drive the idler wheel 82 to rotate. When the idler wheel 82 rotates, it drives the second gear 11 to rotate. The rotation direction of the second gear 11 is changed by the idler wheel 82, thereby driving the threaded rod 9 to rotate and the telescopic sleeve 91 to contract inward, thereby driving the smoothing component to slide along the inner wall of the multi-head pipe 3, which is used to rub the dripping cement on its upper end surface through the scraper 7, thereby improving the uniformity of the cement on the inner wall of the multi-head pipe 3. Uniformity, and by setting the ratio of the number of long teeth 511 and the number of teeth on the first gear 10, it can be set by calculation that before the connecting seat 403 rotates to 180 degrees, after the first gear 10 and the second gear 11 rotate, the telescopic sleeve 91 and the smoothing component just complete one extension and contraction reset, avoiding the interference between the connecting seat 403 and the telescopic sleeve 91 during the extension of the telescopic component, and driving the telescopic sleeve 91 and the connecting seat 403 to rotate synchronously, which is beneficial to further improve the uniformity of the smoothing component moving on the inner wall of the multi-head pipe 3.

[0046] A support frame 101 is provided at the upper end of the working frame 1, and the upper end of the support frame 101 is an arc-shaped limit opening 102, and the curvature of the outer wall of the arc-shaped limit opening 102 is consistent with the curvature of the outer wall of the main nozzle segment 401; so that the main nozzle segment 401 can be placed at the arc-shaped limit opening 102 on the support frame 101, and the support frame 101 and the coaxial frame 411 provide support for the coating lining component 4. Since cement enters from the main nozzle segment 401, when the cement just enters the main nozzle segment 401, the center of gravity of the main nozzle segment 401 moves forward, thereby causing its rear end to tilt forward, and the front end of the main nozzle segment 401 is supported by the support frame 101, so that its stability can be further improved, which is conducive to reducing the occurrence of tilting.

[0047] The driving assembly includes a servo motor 2, a transmission belt 21, a supporting roller 22 and a shaft core 23, and a plurality of supporting rollers 22 are rotatably connected above the working frame 1, and the inner sides of the plurality of supporting rollers 22 are coaxially provided with a shaft core 23.

[0048] A servo motor 2 is fixed to the side wall of the work frame 1, and a transmission belt 21 is arranged between the output end of the servo motor 2 and the shaft core 23. The servo motor 2 drives the support roller 22 to rotate through the transmission belt 21. When the support roller 22 rotates, the multi-head pipeline 3 is driven to rotate by the friction between its outer wall and the outer wall of the multi-head pipeline 3. In some embodiments, a fixed support is arranged on the inner wall of the multi-head pipeline 3, and then the fixed support is directly driven to rotate by the motor to drive the multi-head pipeline 3 to rotate. This method is convenient for controlling the rotation speed of the multi-head pipeline 3. However, when the lining is completed, the support member is removed, and a groove is formed at the connection between the support member and the inner wall of the multi-head pipeline 3, resulting in incomplete lining.

[0049] A through groove 81 is formed through the upper end surface of the dustproof shell 8, and the dustproof shell 8 wraps the first gear 10 and the second gear 11. Since the through groove 81 is located directly above the dustproof shell 8, it is beneficial to reduce the splashing of cement from the bottom onto the first gear 10 and the second gear 11, and provide protection for the first gear 10 and the second gear 11, thereby facilitating the increase of the service life of the two gears.

[0050] The long teeth 511 and the short teeth 512 are arranged alternately, and the long teeth 511 penetrate the through slot 81 to mesh with the first gear 10, and the short teeth 512 mesh with the idler gear 82. A sliding protrusion 61 is fixed to one side of the movable seat 6 close to the annular guide rail 5, and the sliding protrusion 61 is clamped into the inner side of the annular guide rail 5. The first gear 10 and the second gear 11 are respectively located directly below the long teeth 511 and the short teeth 512. Since the long teeth 511 and the short teeth 512 are arranged alternately, the long teeth 511 and the short teeth 512 are prevented from being meshed with the first gear 10 and the idler gear 82 at the same time, thereby preventing the threaded rod 9 from being stuck due to simultaneous forward and reverse rotation. In some embodiments, an electric telescopic rod is used to replace the telescopic assembly and the smoothing assembly for movement. However, due to the complex internal environment of the multi-headed pipe 3, the power cord of the electric telescopic rod needs to enter the interior of the multi-headed pipe 3, which makes the power cord easy to be contaminated. In addition, since the rotation of the multi-headed pipe 3 of the device is driven by the friction between the support roller 22 and the outer wall of the multi-headed pipe 3, when the outer surface of the multi-headed pipe 3 is wet or has impurities, the time for the multi-headed pipe 3 to rotate one circle is not fixed, which makes it easy for the smoothing assembly to be reset prematurely or not reset in time after rotating to 90 degrees during the rotation of the multi-headed pipe 3, thereby interfering with the multi-headed pipe 3, or when the multi-headed pipe 3 suddenly stops or rotates, the electric telescopic rod cannot move in time.

[0051] The smoothing assembly includes a scraper 7, a connecting block 71 and a supporting spring 72, and the connecting block 71 is inserted at one end of the telescopic sleeve 91 away from the dustproof shell 8, and the supporting spring 72 is arranged on the outer side of the connecting block 71, and the scraper 7 is fixed at one end of the connecting block 71 away from the telescopic sleeve 91. The end of the telescopic sleeve 91 away from the dustproof shell 8 is threadedly connected with a threaded cap 12;

[0052] First, the support spring 72 is sleeved on the outside of the connecting block 71, and then the telescopic sleeve 91 is inserted into the inside of the connecting block 71, and the connecting block 71 and the support spring 72 are fixed to the outside of the telescopic sleeve 91 through the threaded cap 12. When in use, the thread inside the threaded cap 12 is screwed with the thread outside the telescopic sleeve 91 and completely wrapped, thereby avoiding exposure of the connection between the two, and preventing cement from splashing onto the threaded connection and damaging the thread, thereby improving the service life of the telescopic assembly, and the two ends of the support spring 72 are respectively against the scraper 7 and the telescopic sleeve 91, so that there is a certain amount of activity between the scraper 7 and the telescopic sleeve 91, and when subjected to strong extrusion, it can shrink upward, avoiding impact with the cement after hardening, thereby damaging the cement coating, and improving the adaptability of the smoothing assembly, by replacing the support springs 72 of different lengths to adapt to multi-head pipes 3 of different diameters;

[0053] The lower end surface of the scraper 7 is arc-shaped, and a baffle 711 is fixed around the upper end edge of the scraper 7 .

[0054] Compared with the flat scraper 7, the curved scraper 7 can fit more closely with the inner wall of the multi-head pipe 3 when sliding on the inner wall of the multi-head pipe 3, and during the movement of the scraper 7, excess cement will be pushed to the groove in the moving path by the baffle 711 on the side wall of the scraper 7. During the movement of the flat scraper 7, if the cement is higher than the scraper 7, the cement will easily pass through the upper end of the scraper 7 during the advancement process, so that the baffle 711 and the curved scraper 7 can improve the effect of smoothing the intersection of the multi-head pipe 3.

[0055] The alkali-activated cement lining machine provided by the present invention is further described below in conjunction with the accompanying drawings and implementation examples.

[0056] Before use, the multi-head pipe 3 is placed on the upper end of the working frame 1, and the outer wall of the multi-head pipe 3 is in contact with the supporting roller 22, and then the main nozzle segment 401 is passed through the coaxial frame 411 and the multiple slave nozzle segments 402 are respectively inserted into the connecting port 431 on the connecting seat 403, and then the main nozzle segment 401 is placed on the arc-shaped limit port 102.

[0057] When in use, start the servo motor 2, which drives the support roller 22 to rotate through the transmission belt 21. When the support roller 22 rotates, it drives the multi-head pipe 3 and the coating assembly 4 to rotate, and connects one end of the main nozzle segment 401 close to the arc-shaped limit port 102 with the external cement pool. The cement enters the main nozzle segment 401 and enters the coating assembly 4, and is sprayed on the inner wall of the multi-head pipe 3 through the nozzle 404.

[0058] During the rotation of the multi-head pipe 3, the coating assembly 4 is driven to rotate. When the connecting seat 403 rotates, the movable seat 6 is affected by gravity and rotates along the annular guide rail 5, and is always located directly below the connecting seat 403. During the rotation of the connecting seat 403, the long teeth 511 on the gear ring 51 mesh with the first gear 10, thereby driving the threaded rod 9 to rotate forward, and driving the telescopic sleeve 91 and the smoothing assembly to slide along the inner wall of the multi-head pipe 3. When the first gear 10 is meshed with the long teeth 511, the short teeth 512 mesh with the idler wheel 82. When the idler wheel 82 rotates, it drives the second gear 11 to rotate, thereby changing the rotation direction of the threaded rod 9 when the rotation direction of the connecting seat 403 remains unchanged, thereby prompting the telescopic sleeve 91 and the scraper 7 to retract inwardly. In this process, the lower end face of the scraper 7 is driven to contact the inner wall of the multi-head pipe 3 through the elastic restoring force of the support spring 72, so that the inner wall of the intersection of the multi-head pipe 3 can be smoothed during the rotation process, which is beneficial to improve the uniformity of the cement lining in the over-head pipe.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] The above shows and describes the basic principles, main features and advantages of the present disclosure. Those skilled in the art should understand that the present disclosure is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present disclosure. Without departing from the spirit and scope of the present disclosure, the present disclosure may have various changes and improvements, and these changes and improvements fall within the scope of the present disclosure to be protected.

Claims

1. An alkali activated cement lining machine, characterized in that: include: A working frame (1), a coating assembly (4) and a smoothing assembly; The upper end of the working frame (1) is rotatably connected to a multi-head pipeline (3), a driving assembly is arranged below the multi-head pipeline (3), the coating assembly (4) is located on the inner side of the multi-head pipeline (3), and a coaxial frame (411) is fixed on the inner side of the multi-head pipeline (3); The coating assembly (4) comprises a main nozzle segment (401) fixedly mounted on the inner side of a coaxial frame (411), one end of the main nozzle segment (401) is threadedly connected to a connection seat (403), a plurality of connection ports (431) are fixedly arranged on the inner side of the connection seat (403), and a sub-nozzle segment (402) is threadedly connected to the inner side of each of the plurality of connection ports (431), and a plurality of nozzles (404) are provided through the outer sides of each of the main nozzle segment (401) and the sub-nozzle segment (402); An annular guide rail (5) is fixedly provided on the outer wall of the connecting seat (403), and a movable seat (6) is slidably connected to the inner side of the annular guide rail (5), and a gear ring (51) is fixed on one side of the annular guide rail (5), and long teeth (511) are fixed on the outer side of the gear ring (51), and short teeth (512) are arranged on the right side of the long teeth (511); A dust cover (8) is fixed to the lower end of the movable seat (6), a telescopic assembly is arranged on the inner side of the dust cover (8), and the telescopic assembly includes a threaded rod (9) penetrating the inner side of the dust cover (8), and a first gear (10) is fixed to one end of the threaded rod (9) close to the gear ring (51), a second gear (11) is arranged on the right side of the first gear (10), and an idler gear (82) is meshed at the upper end of the second gear (11), and a telescopic sleeve (91) is threadedly connected to the other end of the threaded rod (9), and a smoothing assembly is fixed to the output end of the telescopic assembly.

2. The alkali activated cement lining machine according to claim 1, characterized in that: A support frame (101) is provided at the upper end of the working frame (1), and the upper end of the support frame (101) is an arc-shaped limiting opening (102), and the curvature of the outer wall of the arc-shaped limiting opening (102) is consistent with the curvature of the outer wall of the main nozzle segment (401).

3. The alkali activated cement lining machine according to claim 2, characterized in that: The driving assembly comprises a servo motor (2), a transmission belt (21), a support roller (22) and a shaft core (23), and a plurality of support rollers (22) are rotatably connected above the working frame (1), and the inner sides of the plurality of support rollers (22) are coaxially provided with a shaft core (23).

4. The alkali activated cement lining machine according to claim 3 is characterized in that: A servo motor (2) is fixed to the side wall of the working frame (1), and a transmission belt (21) is arranged between the output end of the servo motor (2) and the shaft core (23).

5. The alkali activated cement lining machine according to claim 1, characterized in that: A through groove (81) is formed through the upper end surface of the dustproof shell (8).

6. The alkali activated cement lining machine according to claim 1, characterized in that: The long teeth (511) and the short teeth (512) are arranged alternately, and the long teeth (511) pass through the through slot (81) to mesh with the first gear (10), and the short teeth (512) mesh with the idler gear (82).

7. The alkali activated cement lining machine according to claim 6, characterized in that: A sliding protrusion (61) is fixed on one side of the movable seat (6) close to the annular guide rail (5), and the sliding protrusion (61) is inserted into the inner side of the annular guide rail (5).

8. The alkali activated cement lining machine according to claim 1, characterized in that: The smoothing component comprises a scraper (7), a connecting block (71) and a supporting spring (72), and a connecting block (71) is inserted into the end of the telescopic sleeve (91) away from the dustproof shell (8), and a supporting spring (72) is arranged on the outer side of the connecting block (71), and a scraper (7) is fixed to the end of the connecting block (71) away from the telescopic sleeve (91).

9. The alkali activated cement lining machine according to claim 8, characterized in that: One end of the telescopic sleeve (91) away from the dustproof shell (8) is threadedly connected to a threaded cap (12).

10. The alkali activated cement lining machine according to claim 8, characterized in that: The lower end surface of the scraper (7) is arc-shaped, and a baffle (711) is fixed around the upper end edge of the scraper (7).

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