Masonry crack pressure grouting equipment

Abstract

The invention relates to the technical field of pressure grouting, in particular to masonry crack pressure grouting equipment which comprises a grouting pipe. The insertion pipe is fixedly installed at the end of the grouting pipe, and the pipe diameter of the insertion pipe is at least larger than that of the grouting pipe; the grouting opening is formed in the central axis position of the grouting pipe and the insertion pipe; the cleaning assembly is arranged at the end, away from the grouting pipe, of the insertion pipe. Compared with the prior art, in the process that the insertion pipe is inserted into the hole in a reciprocating mode, impurities adhering to the inner wall can be effectively scraped through attached rotation of the cleaning scraping strips on the outer surface wall of the fixing ring and the inner wall of the hole, the inner wall of the hole is smoother, the cleaning efficiency is improved, the cleanliness and flatness of the interior of the hole are guaranteed, and the service life of the hole is prolonged. Meanwhile, the cleaning scraping strip is made of an elastic metal material and can adapt to the shape of the inner wall of the hole, and it is guaranteed that the cleaning effect is more thorough.

Description

Technical Field

[0001] The invention relates to the technical field of pressure grouting, in particular to a masonry crack pressure grouting device. Background Art

[0002] Masonry crack pressure grouting equipment uses mechanical high-pressure power to inject chemical grouting materials into masonry cracks. When the slurry encounters moisture in the cracks, it will quickly disperse, emulsify, expand, and solidify to form an elastomer to fill the cracks, thereby achieving the purpose of water stopping and leaking and structural reinforcement. This type of equipment is widely used in engineering fields such as construction, water conservancy, and transportation, and is mainly used for crack repair, water stopping and leaking, and structural reinforcement.

[0003] After searching, the Chinese patent with publication number CN215368866U discloses a masonry crack pressure grouting reinforcement device, which includes a main body mechanism and a grouting mechanism, wherein the main body mechanism includes a mixing barrel, a mixing assembly and an air compressor, wherein the mixing barrel is vertically placed on a horizontal ground, and the mixing assembly is arranged at the longitudinal center axis position of the mixing barrel; the air compressor is arranged on a horizontal ground, and the output end of the air compressor is connected with a pressure regulating pipe, and the end of the pressure regulating pipe away from the air compressor is penetrated through the upper end surface of the mixing barrel and is mutually connected with the inside of the mixing barrel, and a pressure gauge is arranged at the connection point between the air compressor and the pressure regulating pipe; the present application has a better effect of deep grouting reinforcement of masonry cracks, but when the scheme is actually used, there are still the following defects: In the process of grouting gas cracks, it is necessary to drill holes at the precise location of the cracks to ensure that the grouting material can be accurately injected into the cracks to achieve the effect of repair and reinforcement. However, after the drilling is completed, an air gun is often used to blow away the dust in the hole in order to remove the dust and debris generated during the drilling process. However, this cleaning method may not be thorough, and some granular impurities may still remain in the hole. When the grouting nozzle is subsequently inserted into these holes that have not been completely cleaned, these residual granular impurities may become an obstacle to the close fit between the grouting nozzle and the hole wall, thereby reducing the sealing performance of the grouting nozzle after insertion, directly affecting the efficiency and quality of grouting.

[0004] Therefore, the present application provides a masonry crack pressure grouting device to meet the high sealing performance when the grouting nozzle is inserted. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a masonry crack pressure grouting device to solve the problem that incomplete cleaning after drilling affects the sealing performance of the grouting nozzle when it is inserted.

[0006] Based on the above purpose, the present invention provides a masonry crack pressure grouting device, comprising: Grout pipe; An insertion pipe is fixedly mounted at the end of the grouting pipe, and the diameter of the insertion pipe is at least larger than the diameter of the grouting pipe; A grouting port is provided at the center axis of the grouting pipe and the insertion pipe; A cleaning assembly is arranged at an end of the insertion tube away from the grouting tube; A sleeve, fixedly sleeved on the outer wall of the insertion tube; A plurality of top-connected air bags are distributed in a linear array and fixedly sleeved on the outer wall of the sleeve; An air guide mechanism is arranged on the inner side wall of the sleeve; A valve plate is rotatably mounted on the inner wall of the grouting port through a rotating rod; The regulating mechanism is arranged on the air guiding mechanism.

[0007] Preferably, the cleaning component comprises: A fixing ring, fixedly sleeved on an end of the insertion tube away from the grouting tube; Four extension grooves are arranged in a circular array inside the insertion tube, and the ends of the extension grooves are connected to the outer side of one end of the insertion tube connected to the grouting tube; Four rotating shafts are rotatably mounted on the inner side walls of the four extension grooves respectively, and the ends of the rotating shafts pass through the fixing ring; Four transmission gears are respectively fixedly mounted on one end of the four rotating shafts located inside the extension groove; Four slide plates are slidably mounted on the inner side walls of the four extension grooves respectively; Four groups of fixed teeth are respectively fixedly mounted on one end of the four slides close to the transmission gear, the fixed teeth are meshed with the transmission gear, and each group of fixed teeth is distributed in a linear array on the side of the slide; Four cleaning scrapers are respectively fixedly mounted on one end of the four rotating shafts away from the transmission gear; The operating mechanism is arranged on the outer wall of the grouting pipe.

[0008] Preferably, the operating mechanism comprises: A sliding ring is slidably sleeved on the outer wall of the grouting pipe, and one end of the four sliding plates away from the fixed teeth is fixedly connected to the side surface of the sliding ring; A threaded ring is rotatably mounted on one end of the sliding ring away from the sliding plate, and the threaded ring is threadedly connected to the outer wall of the grouting pipe.

[0009] Preferably, positioning plates are fixedly installed at diagonal positions at both ends of the cleaning scraper strip, and positioning grooves corresponding to the positioning plates are formed at both ends of the fixing ring.

[0010] Preferably, the air guide mechanism comprises: A storage airbag is arranged on the inner bottom wall of the sleeve, and the storage airbag is connected with a plurality of the top-connected airbags; A pressing ring is slidably mounted on the inner side wall of the sleeve, and the end of the storage airbag is fixedly connected to the bottom surface of the pressing ring; A guide groove is provided on the inner side wall of the sleeve, and a guide block adapted to the guide groove is fixedly mounted on the outer side wall of the pressing ring; A plurality of clamping grooves are distributed in a linear array and are arranged on the inner side wall of the guide groove away from the pressing ring.

[0011] Preferably, the side wall of the pressing ring fits with the inner side wall of the sleeve, and the cross-sectional dimensions of the guide block and the clamping groove are the same.

[0012] Preferably, the adjustment mechanism comprises: A connecting rod is fixedly mounted on one end of the rotating rod, and one end of the connecting rod away from the valve plate passes through the insertion tube and the sleeve and is located inside the sleeve; An adjusting gear is fixedly mounted on one end of the connecting rod located inside the sleeve; A support rod, fixedly mounted on the top surface of the pressing ring; The rack is adjusted to be slidably mounted on the end of the support rod away from the pressing ring.

[0013] Preferably, a damping rubber ring is provided on the inner side wall of the connection between the adjusting rack and the support rod, and the adjusting rack is meshed with the adjusting gear.

[0014] Preferably, the cleaning scraper strip is made of elastic metal material, and the outer surface wall of the cleaning scraper strip is provided with a wear-resistant coating.

[0015] Preferably, an operating rod is fixedly mounted on the top surface of the pressing ring at a symmetrical position of the support rod.

[0016] Beneficial effects of the present invention: 1. This type of masonry crack pressure grouting equipment, by providing an insertion tube and a cleaning component, in the process of the insertion tube being reciprocated into the hole, the cleaning scraper on the outer wall of the fixed ring rotates in contact with the inner wall of the hole, which can effectively scrape off impurities adhering to the inner wall, making the inner wall of the hole smoother, which not only improves the cleaning efficiency, but also ensures the cleanliness and flatness of the inside of the hole, providing a good foundation for subsequent grouting operations. At the same time, the cleaning scraper is made of elastic metal material, which can adapt to the shape of the inner wall of the hole to ensure a more thorough cleaning effect.

[0017] 2. This type of masonry crack pressure grouting equipment achieves stable fixation and sealing of the grouting pipe and the insertion pipe by setting a top-connected airbag and an air guide mechanism, pressing and rotating a pressing ring, and coordinating the use of the storage airbag and the top-connected airbag. The expansion of the top-connected airbag not only firmly fixes the insertion pipe in the hole, but also fills the gap between the hole and the insertion pipe, effectively preventing slurry leakage during the grouting process. In addition, the pressing ring ensures that the top-connected airbag can be stably expanded and used through the coordination and fixation of the guide block and the card slot, further improving the reliability and safety of the grouting operation.

[0018] 3. This type of masonry crack pressure grouting equipment, by setting the valve plate and the adjustment mechanism, through the coordinated action of the adjusting rack, the adjusting gear and the connecting rod, realizes the flexible adjustment of the valve plate angle, so that the valve plate can adapt to different grouting requirements and hole conditions, ensuring the smooth progress of the grouting operation. At the same time, after the adjustment is completed, the damping rubber ring fixes the position of the adjusting rack, ensuring that the valve plate can be used stably at the adjusted angle, thereby improving the stability and operability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a partial cutaway structure of the present invention as a whole; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 It is a schematic diagram of the three-dimensional multi-angle structure of the present invention; Figure 5 It is a schematic diagram of a partially cutaway structure of the present invention; Figure 6 It is a schematic diagram of the partial cross-section structure of the sleeve of the present invention; Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle; Figure 8 It is a schematic diagram of three-dimensional partial cutaway structures of the present invention; Fig. 9 For the present invention Figure 8 The enlarged structural diagram at C in the middle; Fig.10 For the present invention Figure 1The enlarged structural diagram at D in the middle; Fig.11 For the present invention Figure 4 Enlarged structural diagram at E in the middle.

[0021] The markings in the figure are: 1. Grouting pipe; 2. Insertion pipe; 3. Grouting port; 4. Set sleeve; 5. Top airbag; 61. Fixed ring; 62. Extension groove; 63. Rotating shaft; 64. Transmission gear; 65. Slide plate; 66. Fixed teeth; 67. Cleaning scraper; 68. Sliding ring; 69. Threaded ring; 610. Positioning plate; 611. Positioning groove; 71. Storage airbag; 72. Pressing ring; 73. Guide groove; 74. Card slot; 8. Valve plate; 91. Connecting rod; 92. Adjusting gear; 93. Support rod; 94. Adjusting rack; 10. Operating lever. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0023] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] like Figures 1 to 11 As shown, a masonry crack pressure grouting device comprises a grouting pipe 1; an insert pipe 2, which is fixedly installed at the end of the grouting pipe 1, and the diameter of the insert pipe 2 is at least larger than the diameter of the grouting pipe 1; a grouting port 3, which is opened at the center axis position of the grouting pipe 1 and the insert pipe 2; a cleaning component, which is arranged at the end of the insert pipe 2 away from the grouting pipe 1; a sleeve 4, which is fixedly sleeved on the outer wall of the insert pipe 2; a plurality of top-connected air bags 5, which are distributed in a linear array and fixedly sleeved on the outer wall of the sleeve 4; an air guide mechanism, which is arranged on the inner side wall of the sleeve 4; a valve plate 8, which is rotatably installed on the inner side wall of the grouting port 3 through a rotating rod; and an adjusting mechanism, which is arranged on the air guide mechanism; When in use, the insertion tube 2 can first be moved back and forth inside the hole punched at the edge of the masonry crack. During the reciprocating movement of the insertion tube 2, the inside of the hole can be cleaned by the cleaning component, so that impurities inside the hole can be cleaned out, ensuring that the insertion tube 2 is better sealed when it is fixed. Then the insertion tube 2 can be inserted into the hole again, and the several top-connected air bags 5 on the outer wall of the sleeve 4 can be inflated through the air guide mechanism, so that the outer wall of the top-connected air bags 5 fits with the inner wall of the hole, so as to achieve the fixation and sealing of the insertion tube 2. Then the grouting tube 1 can be connected to the main pressure grouting equipment. Before use, the angle of the valve plate 8 can be adjusted by the adjustment mechanism to achieve the adjustment of the grouting flow rate, which is more convenient to use. After the adjustment is completed, the main body of the pressure grouting equipment can be opened to grout the cracks.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig.10 , Fig.11 As shown, the cleaning assembly includes: a fixed ring 61, which is fixedly sleeved on the end of the insertion tube 2 away from the grouting tube 1; four extension grooves 62, which are distributed in a circular array and opened inside the insertion tube 2, and the ends of the extension grooves 62 are connected to the outer side of the end of the insertion tube 2 connected to the grouting tube 1; four rotating shafts 63, which are respectively rotatably mounted on the inner side walls of the four extension grooves 62, and the ends of the rotating shafts 63 pass through the fixed ring 61; four transmission gears 64, which are respectively fixedly mounted on the ends of the four rotating shafts 63 located on the inner side of the extension grooves 62; four slide plates 65, which are respectively slidably mounted on the inner side walls of the four extension grooves 62; four sets of fixed teeth 66, which are respectively Fixedly mounted on one end of the four slides 65 close to the transmission gear 64, the fixed teeth 66 mesh with the transmission gear 64, and each set of fixed teeth 66 is distributed in a linear array on the side of the slide 65; four cleaning scrapers 67 are respectively fixedly mounted on one end of the four rotating shafts 63 away from the transmission gear 64, the cleaning scrapers 67 are made of elastic metal material, the outer wall of the cleaning scrapers 67 is provided with a wear-resistant coating, and positioning plates 610 are fixedly mounted at the diagonal positions of both ends of the cleaning scrapers 67, and positioning grooves 611 corresponding to the positioning plates 610 are opened at both ends of the fixing ring 61; the operating mechanism is arranged on the outer wall of the grouting pipe 1; In the process of inserting the insertion tube 2 back and forth into the hole, when the insertion tube 2 is inserted into the hole, the four cleaning scrapers 67 on the outer wall of the fixing ring 61 are located Figure 1The cleaning scraper 67 on the outer wall of the fixing ring 61 can fit with the inner wall of the hole, and the impurities adhering to the inner wall of the hole can be scraped off during the rotation, so that the inner wall of the hole is smoother. When the insertion tube 2 is completely inserted into the hole, the staff can drive the slide plate 65 and the fixed teeth 66 through the operating mechanism, and the fixed teeth 66 are meshed with the transmission gear 64. Therefore, when the slide plate 65 slides, it can drive the transmission gear 64, the rotating shaft 63 and the cleaning scraper 67 to rotate. During the rotation of the cleaning scraper 67, since it is made of elastic metal material, under the action of the squeezing of the inner wall of the hole, when the cleaning scraper 67 rotates to be flush with the fixing ring 61, the cleaning scraper 67 can fit with the outer wall of the fixing ring 61, and the positioning plate 610 can enter the positioning groove 611 to fix the cleaning scraper 67. After the adjustment is completed, the insertion tube 2 can be pulled out of the hole. At this time, the impurities in the hole can be pushed out by the fixing ring 61 and the four cleaning scrapers 67, and the cleaning is more thorough.

[0026] like Figure 4 , Fig.11 As shown, the operating mechanism includes: a sliding ring 68, which is slidably mounted on the outer wall of the grouting pipe 1, and one end of the four slide plates 65 away from the fixed teeth 66 is fixedly connected to the side of the sliding ring 68; a threaded ring 69, which is rotatably mounted on the end of the sliding ring 68 away from the slide plate 65, and the threaded ring 69 is screwed to the outer wall of the grouting pipe 1; When driving the slide plate 65, the threaded ring 69 can be rotated to slide along the outer wall of the grouting pipe 1, which can drive the sliding ring 68 to slide to drive the slide plate 65. In addition, since the threaded ring 69 is screwed to the grouting pipe 1, the positions of the threaded ring 69 and the sliding ring 68 can be fixed so that the cleaning scraper 67 can be used stably.

[0027] like Figure 7 , Fig. 9 As shown, the air guide mechanism includes: a storage airbag 71, which is arranged on the inner bottom wall of the sleeve 4, and the storage airbag 71 is connected with a plurality of top-connected airbags 5; a pressing ring 72, which is slidably mounted on the inner side wall of the sleeve 4, and the end of the storage airbag 71 is fixedly connected to the bottom surface of the pressing ring 72, and the side wall of the pressing ring 72 is in contact with the inner side wall of the sleeve 4; a guide groove 73, which is arranged on the inner side wall of the sleeve 4, and a guide block adapted to the guide groove 73 is fixedly mounted on the outer wall of the pressing ring 72; a plurality of clamping grooves 74, which are arranged in a linear array on the inner side wall of the guide groove 73 away from the pressing ring 72, and the cross-sectional size of the guide block is the same as that of the clamping groove 74; In the process of firmly installing and sealing the grouting pipe 1 and the insertion pipe 2, the operator will first apply a downward pressure on the pressing ring 72. This pressure will prompt the pressing ring 72 to slide smoothly and orderly along the preset guide groove 73 through the guide block thereon. During this sliding process, the pressing ring 72 will closely contact and squeeze the storage air bag 71. This squeezing action will force the gas inside the storage air bag 71 to be effectively discharged and flow into the top air bag 5 along a specific path. As the gas is continuously injected, the top air bag 5 will gradually expand. Its expanded volume and shape can form a close fit with the inner wall of the hole and the outer wall of the insertion pipe 2, thereby achieving effective fixation of the insertion pipe 2. During the expansion process, the top air bag 5 can not only It provides sufficient fixing force to ensure the stability of the insertion tube 2 and can also perfectly seal the tiny gap between the hole and the insertion tube 2. This sealing effect is crucial to preventing possible slurry leakage during the grouting process. It can ensure the smooth progress of the grouting operation and the reliability of the final grouting quality. When the top airbag 5 is inflated to a predetermined degree, that is, after the fixation and sealing of the insertion tube 2 is completed, the operator will further rotate the pressing ring 72. This rotation action will cause the guide block to slide into the corresponding position of the slot 74. The completion of this step indicates that the pressing ring 72 has been firmly fixed in the current position, thereby ensuring that the top airbag 5 can continue to stably maintain the expanded state, providing solid support and guarantee for subsequent grouting operations.

[0028] like Figure 5 , Figure 8 , Fig. 9 As shown, the adjustment mechanism includes: a connecting rod 91, which is fixedly mounted on one end of the rotating rod, and the end of the connecting rod 91 away from the valve plate 8 passes through the insertion tube 2 and the sleeve sleeve 4 and is located on the inner side of the sleeve sleeve 4; an adjusting gear 92, which is fixedly mounted on the end of the connecting rod 91 located on the inner side of the sleeve sleeve 4; a support rod 93, which is fixedly mounted on the top surface of the pressing ring 72, and the top surface of the pressing ring 72 is located at a symmetrical position of the support rod 93 and an operating rod 10 is fixedly mounted; an adjusting rack 94, which is slidably mounted on the end of the support rod 93 away from the pressing ring 72, and a damping rubber ring is provided on the inner side wall of the connection between the adjusting rack 94 and the support rod 93, and the adjusting rack 94 is meshed with the adjusting gear 92; In the process of rotating the pressing ring 72 until the guide block smoothly enters the slot 74, the support rod 93 can not only rotate synchronously with the rotation of the pressing ring 72, but also rotate the support rod 93. When the support rod 93 rotates to a specific position, the adjusting rack 94 at its end will mesh with the adjusting gear 92. The achievement of this meshing state lays a solid foundation for subsequent adjustment operations. At this time, the operator can pull the adjusting rack 94 to make it slide smoothly and orderly along the outer wall of the support rod 93. This sliding action will be immediately transmitted to the adjusting gear 92, driving it to start rotating. The rotation of the adjusting gear 92 is converted into power through the transmission mechanism of the connecting rod 91 to accurately adjust the angle of the valve plate 8. This adjustment process is flexible and precise, and can ensure that the valve plate 8 is adjusted to an angle that meets specific requirements. When the angle of the valve plate 8 is adjusted to the use state, the damping rubber ring effectively fixes the position of the adjusting rack 94 through its unique damping characteristics, thereby ensuring that the valve plate 8 can be stabilized at the adjusted angle, providing reliable protection for subsequent use.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0030] Therefore, any omission, modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A masonry crack pressure grouting device, characterized in that: include: Grouting pipe (1); An insertion tube (2) is fixedly mounted on the end of the grouting tube (1), and the diameter of the insertion tube (2) is at least greater than the diameter of the grouting tube (1); A grouting port (3) is provided at the center axis position of the grouting pipe (1) and the insertion pipe (2); A cleaning assembly, arranged at an end of the insertion tube (2) away from the grouting tube (1); A sleeve (4) fixedly sleeved on the outer wall of the insertion tube (2); A plurality of top-connected air bags (5) are distributed in a linear array and fixedly sleeved on the outer wall of the sleeve (4); An air guide mechanism, arranged on the inner side wall of the sleeve (4); A valve plate (8) is rotatably mounted on the inner wall of the grouting port (3) via a rotating rod; The regulating mechanism is arranged on the air guiding mechanism.

2. A masonry crack pressure grouting equipment according to claim 1, characterized in that: The cleaning component includes: A fixing ring (61) fixedly sleeved on an end of the insertion tube (2) away from the grouting tube (1); Four extension grooves (62) are arranged in a circular array and are arranged inside the insertion tube (2), and the ends of the extension grooves (62) are connected to the outside of one end of the insertion tube (2) connected to the grouting tube (1); Four rotating shafts (63) are rotatably mounted on the inner side walls of the four extension grooves (62), respectively, and ends of the rotating shafts (63) pass through the fixing ring (61); Four transmission gears (64) are respectively fixedly mounted on one end of the four rotating shafts (63) located inside the extension groove (62); Four slide plates (65) are slidably mounted on the inner side walls of the four extension grooves (62) respectively; Four groups of fixed teeth (66) are respectively fixedly mounted on one end of the four slides (65) close to the transmission gear (64), the fixed teeth (66) meshing with the transmission gear (64), and each group of fixed teeth (66) is distributed in a linear array on the side of the slide (65); Four cleaning scrapers (67) are respectively fixedly mounted on one end of the four rotating shafts (63) away from the transmission gear (64); An operating mechanism is arranged on the outer wall of the grouting pipe (1).

3. A masonry crack pressure grouting equipment according to claim 2, characterized in that: The operating mechanism comprises: A sliding ring (68) is slidably sleeved on the outer wall of the grouting pipe (1), and one end of the four sliding plates (65) away from the fixed teeth (66) is fixedly connected to the side surface of the sliding ring (68); A threaded ring (69) is rotatably mounted on an end of the sliding ring (68) away from the sliding plate (65), and the threaded ring (69) is threadedly connected to the outer wall of the grouting pipe (1).

4. A masonry crack pressure grouting equipment according to claim 3, characterized in that: Positioning plates (610) are fixedly mounted at diagonal positions at both ends of the cleaning scraper (67), and positioning grooves (611) corresponding to the positioning plates (610) are formed at both ends of the fixing ring (61).

5. A masonry crack pressure grouting equipment according to claim 4, characterized in that: The air guide mechanism comprises: A storage airbag (71) is arranged on the inner bottom wall of the sleeve (4), and the storage airbag (71) is connected to a plurality of the top-connected airbags (5); A pressing ring (72) is slidably mounted on the inner side wall of the sleeve (4), and an end of the storage airbag (71) is fixedly connected to the bottom surface of the pressing ring (72); A guide groove (73) is provided on the inner side wall of the sleeve (4), and a guide block adapted to the guide groove (73) is fixedly mounted on the outer side wall of the pressing ring (72); A plurality of latching grooves (74) are distributed in a linear array and are arranged on the inner side wall of the guide groove (73) at one end away from the pressing ring (72).

6. The masonry crack pressure grouting equipment according to claim 5, characterized in that: The side wall of the pressing ring (72) fits the inner side wall of the sleeve (4), and the cross-sectional dimensions of the guide block and the clamping groove (74) are the same.

7. The masonry crack pressure grouting equipment according to claim 6, characterized in that: The regulating mechanism comprises: A connecting rod (91) is fixedly mounted on one end of the rotating rod, and an end of the connecting rod (91) away from the valve plate (8) passes through the insertion tube (2) and the sleeve (4) and is located on the inner side of the sleeve (4); An adjusting gear (92) fixedly mounted on one end of the connecting rod (91) located inside the sleeve (4); A support rod (93) fixedly mounted on the top surface of the pressing ring (72); The rack (94) is adjusted to be slidably mounted on the end of the support rod (93) away from the pressing ring (72).

8. The masonry crack pressure grouting equipment according to claim 7, characterized in that: A damping rubber ring is provided on the inner side wall of the connection between the adjusting rack (94) and the support rod (93), and the adjusting rack (94) is meshed with the adjusting gear (92).

9. The masonry crack pressure grouting equipment according to claim 8, characterized in that: The cleaning scraper strip (67) is made of an elastic metal material, and an outer surface wall of the cleaning scraper strip (67) is provided with a wear-resistant coating.

10. The masonry crack pressure grouting equipment according to claim 9, characterized in that: An operating rod (10) is fixedly mounted on the top surface of the pressing ring (72) at a symmetrical position with respect to the support rod (93).

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