Concrete grouting device

Abstract

The invention discloses a concrete grouting device, and relates to the technical field of concrete grouting, the concrete grouting device comprises a rack, a mixing box, a spiral discharging barrel at the bottom of the mixing box, a grout outlet connected to one side of the spiral discharging barrel, and a grouting pump connected to the other side of the spiral discharging barrel, the top of the rack is vertically connected with a fixing frame, and the fixing frame is vertically connected with the mixing box; a pretreatment box is installed at the top of the fixing frame, a grinding shaft is arranged in the middle of the pretreatment box, and the bottom end of the grinding shaft is guided out of the bottom of the pretreatment box and connected with a grinding motor. Through the arrangement of the cutting mechanism, the fixing rod and the pretreatment box cover, the closed automatic bag opening and feeding effect of cement can be achieved, and the situation that dust floats due to manual bag opening and feeding, and the breathing health of workers is affected is avoided; and by arranging the clamping mechanism, the cement bag can be clamped on the fixing rod, so that the cement bag is prevented from falling off from the fixing rod to influence the operation of the grinding disc, and a subsequent worker can conveniently open the pretreatment box cover to take out the cement bag.

Description

Technical Field

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

[0002] The traditional on-site production process of concrete grouting relies on manual unpacking of cement and pouring it directly into the mixing tank. A large amount of powder will float during the pouring and mixing process, and the staff nearby can easily inhale the powder, which affects the human respiratory system. In addition, the traditional grouting method adopts the method of stirring first and then filtering. Due to the long-term storage of cement, the inside is easily affected by moisture and agglomerates. During the mixing process, it does not come into sufficient contact with water to form large particles, which are difficult to integrate into the slurry. Therefore, they are directly filtered out during filtration, resulting in a waste of cement raw materials. Summary of the invention

[0003] The purpose of the present invention is to provide a concrete grouting device to solve the problems of powder floating and uneven cement mixing when the existing concrete grouting device is used.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a concrete grouting device, comprising a frame, a mixing box installed above the frame, a spiral discharging barrel connected to the bottom of the mixing box, a slurry outlet connected to one side of the spiral discharging barrel, and a grouting pump connected to the other side of the spiral discharging barrel, the top of the frame is vertically connected to a fixing frame, a pretreatment box is installed on the top of the fixing frame, a grinding shaft is arranged in the middle of the pretreatment box, the grinding shaft is driven by a grinding motor, a first bearing is installed on the top of the grinding shaft, a notching mechanism and a clamping mechanism are installed between the first bearing and the inner wall of the pretreatment box, the notching mechanism and the clamping mechanism are arranged alternately and equidistantly in the circumferential direction in the pretreatment box, a grinding disc is installed in the middle of the grinding shaft, a feeding pipe is connected to the bottom of the pretreatment box, a water pipe is penetrated through the side wall of the feeding pipe, a central axis is arranged in the middle of the mixing box, a bracket is installed on the top of the inner cavity of the mixing box, and both side walls of the central axis are connected to the stirring shaft; The cutting mechanism comprises two fixed seats, which are respectively installed on the outer wall of the first bearing and the inner wall of the pretreatment box. A rodless cylinder is installed between the two fixed seats, and a cutting blade is installed on the moving part of the rodless cylinder.

[0005] Preferably, the clamping mechanism comprises a fixed rod, a movable rod is arranged at the bottom of the fixed rod, a connecting block is connected to the outer side wall of the middle part of the movable rod, an arc-shaped clamping block is connected to the end of the connecting block away from the movable rod, and the movable rod is driven by a clamping motor.

[0006] Preferably, the two ends of the fixed rod are respectively connected to the side wall of the first bearing and the inner wall of the pretreatment box, the movable rod is rotatably connected to the pretreatment box, the arc-shaped clamping block is a block structure with a circular arc longitudinal section, one side of the arc-shaped clamping block is integrally connected to the connecting block, and the longitudinal section of the other side of the arc-shaped clamping block is a pointed cone.

[0007] Preferably, a guide plate is connected to the upper surface of the grinding disc, a gap is formed between the outer wall of the grinding disc and the inner wall of the pretreatment box to form a grinding chamber, the top of the grinding shaft is rotatably connected to the fixed seat and the fixed rod via a first bearing, the outer wall of the grinding shaft is connected to the grinding disc and the guide plate, and the guide plate is in an umbrella shape with a narrow top and a wide bottom. Preferably, a pretreatment box cover is disposed on the top of the pretreatment box, a hinge is connected between one side of the pretreatment box cover and the pretreatment box, and the pretreatment box cover is hinged to the pretreatment box via the hinge.

[0008] Preferably, the feed pipe is integrally connected to the pretreatment box, the feed pipe is inclined, the top of the feed pipe is connected to the grinding chamber, and the bottom of the feed pipe is connected to the inner cavity of the mixing box. Preferably, a partition is installed in the middle of the inner cavity of the mixing box, a second bearing is installed between the bottom of the partition and the central axis, a discharge port is opened through the partition, a baffle is arranged inside the partition, a ring is connected to one side of the baffle, and a handle is connected to the mixing box on the other side of the baffle, the bottom of the central axis is rotatably connected to the partition via the second bearing, and the baffle is movably connected to the central axis via the ring.

[0009] Preferably, there are two stirring shafts, one of which is L-shaped, and the other stirring shaft has a telescopic groove inside, a telescopic rod is arranged inside the telescopic groove, a scraper is connected to the side of the telescopic rod away from the stirring shaft, a top screw is arranged through the top of the stirring shaft, and the telescopic rod slides and telescopes in the telescopic groove.

[0010] Compared with the prior art, the present invention has the following beneficial effects: When the present invention is in use, a complete bag of cement is placed on a fixed rod, and the cover of the pretreatment box is closed. The bottom of the bag of cement is supported at four corners by cutting blades and the fixed rod. The cutting blades are driven left and right by a rodless cylinder, so that the two cutting blades cut openings at the bottom of the bag of cement respectively. The openings are squeezed to expand to both sides by the cement, so that the cement inside falls into the pretreatment box from the openings, thereby achieving the effect of closed automatic bag opening and loading of cement, and avoiding the situation where dust floats due to manual bag opening and loading, which affects the respiratory health of the workers.

[0011] In the present invention, during the process of bagged cement falling from the opening, only the fixed rod supports the bagged cement, the movable rod is driven to rotate by the clamping motor, and the movable rod drives the arc clamping block to rotate via the connecting block, so that the arc clamping block is flipped around the axis of the movable rod to above the fixed rod, and the arc clamping block pierces the cement bag through the pointed cone at one end, and clamps the cement bag on the fixed rod, which not only prevents the cement bag from falling from the fixed rod and affecting the operation of the grinding disc, but also facilitates the subsequent staff to open the pretreatment box cover to take out the cement bag.

[0012] When the present invention is working, cement falling into the pretreatment box is guided by the pretreatment box and the guide plate, falls into the grinding chamber for grinding, and finally enters the mixing box from the discharge pipe for stirring and mixing, so that the cement raw materials are first ground and then mixed, avoiding the appearance of large particle impurities that are difficult to dissolve in the slurry, and ensuring the utilization rate of the cement raw materials.

[0013] In the present application, the stirring shaft has a telescopic function. In the extended state, the scraper contacts the inner wall of the mixing box for scraping and cleaning the slurry. In the retracted state, the stirring shaft is used to stir and mix cement and water. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the structure of the pretreatment box; Figure 3 It is a three-dimensional schematic diagram of the pretreatment box; Figure 4 It is a schematic diagram of the clamping mechanism structure; Figure 5 It is a schematic diagram of the mixing box structure; Figure 6 for Figure 1 Enlarged schematic diagram of the structure of part A in the middle.

[0015] In the figure: 1, frame; 2, mixing box; 3, spiral discharge barrel; 4, slurry outlet; 5, grouting pump; 6, fixed frame; 7, pretreatment box; 8, grinding shaft; 9, grinding motor; 10, first bearing; 11, cutting mechanism; 111, fixed seat; 112, rodless cylinder; 113, cutting blade; 12, clamping mechanism; 121, fixed rod; 122, movable rod; 123, connecting block; 124, arc clamping block; 125, clamping motor; 1 3. Grinding disc; 131. Guide plate; 132. Grinding chamber; 14. Feeding pipe; 15. Water pipe; 16. Pretreatment box cover; 161. Hinge; 17. Partition; 171. Second bearing; 172. Discharge port; 173. Baffle; 174. Ring; 175. Handle; 18. Middle axis; 19. Bracket; 20. Stirring motor; 21. Stirring shaft; 211. Telescopic slot; 212. Telescopic rod; 213. Scraper; 214. Top screw. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] like Figures 1 to 6 As shown, this embodiment includes a frame 1, a mixing box 2 installed above the frame 1, a spiral discharge barrel 3 connected to the bottom of the mixing box 2, a slurry outlet 4 connected to one side of the spiral discharge barrel 3, and a grouting pump 5 connected to the other side of the spiral discharge barrel 3. A fixing frame 6 is vertically connected to the top of the frame 1, and a pretreatment box 7 is installed on the top of the fixing frame 6. The pretreatment box 7 is supported and installed above the grouting pump 5 by the fixing frame 6, and a discharge pipe 14 at the bottom of the pretreatment box 7 is connected to the mixing box 2. A grinding shaft 8 is arranged in the middle of the pretreatment box 7. The grinding shaft 8 is driven by a grinding motor 9. The gap between the grinding shaft 8 and the side wall of the discharge pipe 14 is sealed with a sealing member. A first bearing 10 is installed on the top of the grinding shaft 8. A cutting mechanism 11 is installed between the first bearing 10 and the inner wall of the pretreatment box 7 for bagging. The cement is cut, and a clamping mechanism 12 is installed between the first bearing 10 and the inner wall of the pretreatment box 7. There are two cutting mechanisms 11 and two clamping mechanisms 12, and they are arranged alternately and equidistantly in the pretreatment box 7 to clamp the cement bag. A grinding disc 13 is installed in the middle of the grinding shaft 8 to grind and pretreat the cement. A water pipe 15 is provided through the side wall of the feed pipe 14, and the water pipe 15 is connected to an external water source. A central axis 18 is provided in the middle of the mixing box 2, and a bracket 19 is installed on the top of the inner cavity of the mixing box 2. The bracket 19 is cross-shaped and is used to install a stirring motor 20. The stirring motor 20 drives the central axis 18 to work. The side wall of the central axis 18 is connected to a stirring shaft 21. The central axis 18 drives the stirring shaft 21 to rotate, so as to stir the cement and water and promote the mixing of the raw materials to form a slurry.

[0018] The cutting mechanism 11 includes a fixed seat 111, there are two fixed seats 111, and they are respectively installed on the outer wall of the first bearing 10 and the inner wall of the pretreatment box 7. A rodless cylinder 112 is installed between the two fixed seats 111, and a cutting blade 113 is installed on the moving part of the rodless cylinder 112. The cutting blade 113 is driven by the rodless cylinder 112 to move and cut the cement bag.

[0019] Specifically, the clamping mechanism 12 includes a fixed rod 121, which is in the shape of a round rod and is installed between the pretreatment box 7 and the first bearing 10. There are two fixed rods 121 and two fixed seats 111. The two fixed rods 121 are symmetrical in front and back relative to the pretreatment box 7, and the two fixed seats 111 are symmetrical in left and right relative to the pretreatment box 7. A movable rod 122 is provided at the bottom of the fixed rod 121, and a connecting block 123 is provided in the middle of the movable rod 122. An arc-shaped clamping block 124 is connected to the end of the connecting block 123 away from the movable rod 122. The movable rod 122 is driven by a clamping motor 125, and the clamping motor 125 is installed on the outer wall of the pretreatment box 7.

[0020] Furthermore, the two ends of the rodless cylinder 112 are respectively connected to the first bearing 10 and the inner wall of the pretreatment box 7 through the fixed seat 111. The cutting blade 113 is facing upward. After the bagged cement is put into the pretreatment box 7, the left and right sides of the bagged cement are pressed on the cutting blade 113. The cutting blade 113 is driven to move left and right by starting the rodless cylinder 112, so that the two cutting blades 113 cut openings at the bottom of the bagged cement respectively, thereby achieving the effect of closed automatic bag opening and loading of cement, avoiding the floating of dust caused by manual bag opening and loading, which affects the respiratory health of the workers.

[0021] Furthermore, the two ends of the fixed rod 121 are respectively connected to the side wall of the first bearing 10 and the inner wall of the pretreatment box 7, the movable rod 122 is rotatably connected to the pretreatment box 7, and the movable rod 122 is driven to rotate relative to the pretreatment box 7 and the fixed rod 121 by the clamping motor 125. The arc clamping block 124 is a block structure with a longitudinal section of an arc. One side of the arc clamping block 124 is integrally connected to the connecting block 123. The arc clamping block 124 is driven to rotate through the connecting block 123 by the rotation of the movable rod 122, so that the arc clamping block 124 passes through the cement bag around the axis of the movable rod 122 and flips to the top of the fixed rod 121. The arc clamping block 124 is tightly attached to the upper surface of the fixed rod 121 to clamp the cement bag supported on the fixed rod 121. The longitudinal section of the other side of the arc clamping block 124 is a pointed cone, which is convenient for the arc clamping block 124 to pass through the cement bag.

[0022] Furthermore, a guide plate 131 is connected to the upper surface of the grinding disc 13. There is a gap between the outer wall of the grinding disc 13 and the inner wall of the pretreatment box 7 to form a grinding chamber 132. The grinding chamber 132 is wide at the top and narrow at the bottom, so that small particles of cement that have been ground can pass through the grinding chamber 132 and flow downward. The outer wall of the grinding shaft 8 is connected to the grinding disc 13 and the guide plate 131. The grinding shaft 8 is driven to rotate by the grinding motor 9, and the grinding shaft 8 drives the grinding disc 13 to rotate, so that the grinding disc 13 grinds the cement in the grinding chamber 132. The guide plate 131 is in the shape of an umbrella that is narrow at the top and wide at the bottom. The guide plate 131 guides the cement falling from the cement bag to the grinding chamber 132.

[0023] Furthermore, a pretreatment box cover 16 is provided on the top of the pretreatment box 7, and a hinge 161 is connected between one side of the pretreatment box cover 16 and the pretreatment box 7. The pretreatment box cover 16 is hinged to the pretreatment box 7 via the hinge 161. The pretreatment box cover 16 is used to seal the pretreatment box 7 so that dust will not float in the air during the falling process of the cement inside the cement bag after cutting, thereby achieving the effect of closed automatic bag opening and loading of cement.

[0024] Furthermore, the feed pipe 14 is integrally connected to the pretreatment box 7, and the feed pipe 14 is arranged at an angle to facilitate the cement powder in the feed pipe 14 to flow into the mixing box 2. The top of the feed pipe 14 is connected to the grinding chamber 132, and the bottom of the feed pipe 14 is connected to the inner cavity of the mixing box 2, so that the cement ground by the pretreatment box 7 can be directly passed into the mixing box 2 through the feed pipe 14 for stirring and mixing.

[0025] Furthermore, a partition 17 is installed in the middle of the inner cavity of the mixing box 2, and a second bearing 171 is installed between the bottom of the partition 17 and the central axis 18. A discharge port 172 is opened through the partition 17 for the mixed slurry above the partition 17 to flow downward. A baffle 173 is arranged inside the partition 17 for blocking the discharge port 172 during the mixing of raw materials. After the mixing is completed, the baffle 173 moves to one side to open the discharge port 172. A ring 174 is connected to one side of the baffle 173, and a handle 175 is connected to the other side of the baffle 173 through the mixing box 2. The bottom of the central axis 18 is rotatably connected to the partition 17 via the second bearing 171, and the baffle 173 is movably connected to the central axis 18 via the ring 174. The baffle 173 is moved by the handle 175, and the baffle 173 drives the ring 174 to rotate relative to the central axis 18 to open the discharge port 172.

[0026] Furthermore, there are two stirring shafts 21, one stirring shaft 21 is L-shaped, the stirring shaft 21 is fixed in structure and is only used for mixing and stirring raw materials, and the other stirring shaft 21 is provided with a telescopic groove 211 inside, and a telescopic rod 212 is provided inside the telescopic groove 211, and the outer diameter of the telescopic rod 212 is adapted to the inner diameter of the telescopic groove 211, and a scraper 213 is connected to the side of the telescopic rod 212 away from the stirring shaft 21, and a top screw 214 is provided through the top of the stirring shaft 21, and the top screw 214 is threadedly connected to the side wall of the stirring shaft 21, and the top screw 214 penetrates the side wall of the stirring shaft 21 to squeeze the telescopic rod 212, which is used to position the telescopic rod 212, and the telescopic rod 212 slides and retracts in the telescopic groove 211, so that the stirring shaft 21 has a telescopic function. In the extended state, the scraper 213 contacts the inner wall of the mixing box 2 for scraping and cleaning the slurry; in the retracted state, the stirring shaft 21 is used to stir and mix cement and water.

[0027] The method of using the present embodiment is as follows: first, open the pre-treatment box cover 16 and place a bag of cement on the fixing rod 121 and the cutting blade 113, then close the pre-treatment box cover 16, the bottom of the bag of cement is supported at four corners by the cutting blade 113 and the fixing rod 121, then start the rodless cylinder 112, the moving part of the rodless cylinder 112 drives the two cutting blades 113 to move left and right, so that the two cutting blades 113 cut two openings at the bottom of the bag of cement, the openings are squeezed by the cement and expand to both sides, so that the cement inside falls into the pre-treatment box 7 from the openings, then start the clamping motor 125, the clamping motor 1 25 drives the movable rod 122 to rotate, and the movable rod 122 drives the arc clamping block 124 to rotate through the connecting block 123, so that the arc clamping block 124 is turned around the axis of the movable rod 122 to the top of the fixed rod 121, and the arc clamping block 124 pierces the cement bag through the sharp cone at one end, clamps the cement bag on the fixed rod 121, and prevents the cement bag from falling from the fixed rod 121. The cement falling out of the cement bag is guided by the pretreatment box 7 and the guide plate 131 and falls into the grinding chamber 132. The grinding motor 9 drives the grinding shaft 8 to rotate, and the grinding shaft 8 drives the grinding disc 13 to rotate. The grinding disc 13 has an impact on the inside of the grinding chamber 132. The cement is ground, and the agglomerated large particles are ground into small particles and flow downward, and finally flow into the feed pipe 14, and a certain amount of water is introduced into the feed pipe 14 through the water pipe 15, and the cement accumulated in the feed pipe 14 is flushed into the mixing box 2 by the water flow, and then the stirring motor 20 is started, and the stirring motor 20 drives the central shaft 18 to rotate, and the central shaft 18 drives the stirring shaft 21 to stir the cement and water to promote the mixing of the raw materials to form a slurry, and then the baffle 173 is moved by the handle 175, and the baffle 173 drives the sleeve 174 to rotate relative to the central shaft 18, so that the discharge port 172 is opened, and the inside of the mixing box 2 The slurry flows into the spiral discharge barrel 3 from the discharge port 172 and is finally squeezed out from the discharge port 4. After the stirring is completed, slurry remains on the inner wall of the mixing box 2. By loosening the top screw 214, the telescopic rod 212 is pulled to slide in the telescopic groove 211. The telescopic rod 212 drives the scraper 213 to move toward one side of the inner wall of the mixing box 2 until the scraper 213 contacts the inner wall of the mixing box 2. The telescopic rod 212 is then tightened with the top screw 214 to rotate the central shaft 18 to drive the stirring shaft 21 to rotate. The stirring shaft 21 drives the scraper 213 to rotate through the telescopic rod 212, and the scraper 213 scrapes off the slurry remaining on the inner wall of the mixing box 2.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A concrete grouting device, comprising a frame (1), a mixing box (2) mounted above the frame (1), a spiral discharge barrel (3) connected to the bottom of the mixing box (2), a grouting port (4) connected to one side of the spiral discharge barrel (3), and a grouting pump (5) connected to the other side of the spiral discharge barrel (3), characterized in that: The top of the frame (1) is vertically connected to a fixed frame (6), the top of the fixed frame (6) is installed with a pretreatment box (7), a grinding shaft (8) is arranged in the middle of the pretreatment box (7), the grinding shaft (8) is driven by a grinding motor (9), a first bearing (10) is installed on the top of the grinding shaft (8), a notching mechanism (11) and a clamping mechanism (12) are installed between the first bearing (10) and the inner wall of the pretreatment box (7), the notching mechanism (11) and the clamping mechanism (12) are arranged alternately and equidistantly in the circumferential direction in the pretreatment box (7), a grinding disc (13) is installed in the middle of the grinding shaft (8), a feed pipe (14) is connected to the bottom of the pretreatment box (7), a water pipe (15) is provided through the side wall of the feed pipe (14), a central shaft (18) is arranged in the middle of the mixing box (2), a bracket (19) is installed at the top of the inner cavity of the mixing box (2), and both side walls of the central shaft (18) are connected with stirring shafts (21); The cutting mechanism (11) comprises a fixed seat (111), wherein the number of the fixed seats (111) is two and they are respectively mounted on the outer wall of the first bearing (10) and the inner wall of the pretreatment box (7), a rodless cylinder (112) is mounted between the two fixed seats (111), and a cutting blade (113) is mounted on the moving part of the rodless cylinder (112).

2. The concrete grouting device according to claim 1, characterized in that: The clamping mechanism (12) comprises a fixed rod (121), a movable rod (122) is arranged at the bottom of the fixed rod (121), a connecting block (123) is connected to the outer wall of the middle part of the movable rod (122), an end of the connecting block (123) away from the movable rod (122) is connected to an arc-shaped clamping block (124), and the movable rod (122) is driven by a clamping motor (125).

3. The concrete grouting device according to claim 2, characterized in that: The two ends of the fixed rod (121) are respectively connected to the side wall of the first bearing (10) and the inner wall of the pretreatment box (7); the movable rod (122) is rotatably connected to the pretreatment box (7); the arc-shaped clamping block (124) is a block-shaped structure with a longitudinal section being an arc; one side of the arc-shaped clamping block (124) is integrally connected to the connecting block (123); and the other side of the arc-shaped clamping block (124) is in the shape of a pointed cone in longitudinal section.

4. The concrete grouting device according to claim 1, characterized in that: A material guide plate (131) is connected to the upper surface of the grinding disc (13); a gap exists between the outer wall of the grinding disc (13) and the inner wall of the pretreatment box (7) to form a grinding chamber (132); the top of the grinding shaft (8) is rotatably connected to a fixed seat (111) and a fixed rod (121) via a first bearing (10); the outer wall of the grinding shaft (8) is connected to the grinding disc (13) and the material guide plate (131); and the material guide plate (131) is in the shape of an umbrella that is narrow at the top and wide at the bottom.

5. The concrete grouting device according to claim 1, characterized in that: A pretreatment box cover (16) is provided on the top of the pretreatment box (7), and a hinge (161) is connected between one side of the pretreatment box cover (16) and the pretreatment box (7).

6. The concrete grouting device according to claim 1, characterized in that: The feed pipe (14) is integrally connected to the pretreatment box (7); the feed pipe (14) is arranged at an angle; the top of the feed pipe (14) is connected to the grinding chamber (132); and the bottom of the feed pipe (14) is connected to the inner cavity of the mixing box (2).

7. The concrete grouting device according to claim 1, characterized in that: A partition (17) is installed in the middle of the inner cavity of the mixing box (2), a second bearing (171) is installed between the bottom of the partition (17) and the middle shaft (18), a discharge port (172) is opened through the partition (17), a baffle (173) is arranged inside the partition (17), a collar (174) is connected to one side of the baffle (173), and a handle (175) is connected to the other side of the baffle (173) passing through the mixing box (2), the bottom of the middle shaft (18) is rotatably connected to the partition (17) via the second bearing (171), and the baffle (173) is movably connected to the middle shaft (18) via the collar (174).

8. The concrete grouting device according to claim 1, characterized in that: There are two stirring shafts (21), one stirring shaft (21) is L-shaped, and the other stirring shaft (21) has a telescopic groove (211) formed inside, a telescopic rod (212) is arranged inside the telescopic groove (211), a scraper (213) is connected to the side of the telescopic rod (212) away from the stirring shaft (21), a top screw (214) is provided through the top of the stirring shaft (21), and the telescopic rod (212) slides and telescopes in the telescopic groove (211).

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