Ground repairing mortar preparation system, technology and application thereof

Abstract

The invention relates to the related technical field of mortar preparation, and discloses a ground repairing mortar preparation system and process and application thereof.The preparation system comprises a bottom frame body and a stirring barrel arranged on the upper side of the bottom frame body, a feeding device is fixedly arranged on a right support, a feeding port is formed in the upper end of the feeding device, and a discharging port is formed in the lower end of the feeding device; a partition plate is arranged in a feeding port of the feeding device, the partition plate divides the feeding port into a first feeding cavity and a second feeding cavity, a preliminary mixing device is rotationally arranged below the first feeding cavity and the second feeding cavity, and the preliminary mixing device comprises an outer cylinder and an inner cylinder eccentrically rotating in the outer cylinder; the material intermittently enters the inner cavity of the outer cylinder, so that certain air is always kept in the inner cavity of the outer cylinder to ensure that the material can smoothly pass through the arc screen mesh, downwards pass through the discharge port and enter the inner cavity of the stirring cylinder, and the risk of blockage at the feed port is reduced in the initial dry powder mixing process.

Description

Technical Field

[0001] The present invention belongs to the technical field related to mortar preparation, and more specifically, particularly relates to a ground repair mortar preparation system, process and application thereof. Background Art

[0002] Road repair mortar is a material commonly used in road maintenance and repair. It can fill cracks and potholes in the road surface and provide long-lasting protection. First of all, before using road repair mortar, the road needs to be carefully inspected and prepared, and debris, dust and dirt on the road surface need to be cleaned to ensure that the road surface is dry and clean. If there is oil stain or attachment, it needs to be cleaned with appropriate detergent.

[0003] Pavement repair is an important part of road maintenance, which aims to repair cracks, potholes and surface damage caused by vehicle loads, environmental factors and material aging. The choice of repair materials directly affects the repair effect and the service life of the road. Among them, mortar has become one of the commonly used repair materials due to its good adhesion, compressive strength and durability. In order to modify the adhesion and crack resistance of mortar and shorten the hardening time of cement, it is usually necessary to add some additives to the mortar.

[0004] The prior art still has the following technical problems: The most important step in the existing mortar production process is the stirring process. The purpose of stirring is to evenly disperse the different components. The mortar for road repair needs to add a small amount of additives. These additives are usually added in the later stage of the stirring process, which will prolong the stirring time and reduce the stirring efficiency. In addition, the existing stirring device is usually equipped with a rotating stirring structure, which does not have the function of breaking up lumps. Therefore, the problem of mortar agglomeration will occur, resulting in reduced stirring efficiency.

[0005] Therefore, in view of this, the existing structure is studied and improved, and a ground repair mortar preparation system, process and application thereof are provided, in order to achieve a more practical purpose. Summary of the invention

[0006] The present invention provides a ground repair mortar preparation system, process and application thereof, which are used to overcome the above-mentioned defects in the prior art.

[0007] The purpose and efficacy of the ground repair mortar preparation system, process and application thereof of the present invention are achieved by the following specific technical means: The present invention provides a ground repair mortar preparation system, comprising a bottom frame and a mixing drum arranged on the upper side of the bottom frame, a left bracket and a right bracket are fixedly arranged at the left and right ends of the bottom frame respectively, a mixing drum is rotatably arranged between the left bracket and the right bracket, a driving device for driving the mixing drum to rotate is also arranged on the bottom frame, a discharging cone is fixedly arranged at one end of the mixing drum, a discharging trough is arranged at the bottom of the discharging cone, a feeding device is fixedly arranged on the right bracket, a feeding port is provided at the upper end of the feeding device, a discharging port is provided at the lower end of the feeding device, a circular opening is provided at one end of the mixing drum away from the discharging cone, the discharging port of the feeding device extends into the circular opening of the mixing drum, a partition plate is provided in the feeding port of the feeding device, the partition plate divides the feeding port into a first feeding chamber and a second feeding chamber, a preliminary mixing device is rotatably arranged below the first feeding chamber and the second feeding chamber, the preliminary mixing device comprises an outer cylinder and an eccentrically rotating inner cylinder The inner cylinder has outer end covers fixedly arranged at both ends of the outer cylinder, the side wall of the outer cylinder comprises two arc-shaped portions connected to each other, which are respectively an arc plate and an arc screen, the arc plate is provided with a second opening and a first opening, the inner cylinder comprises two arc-shaped portions connected to each other, which are respectively a grinding plate and an inner filter barrel, the grinding plate is a smooth hard arc plate, a feeding pipe is also arranged inside the inner cylinder, the feeding pipe is concentrically arranged with the outer cylinder, a discharge slot is arranged on the side wall of the feeding pipe, and a rotating rod is rotatably arranged inside the feeding pipe, a spiral blade for feeding is fixedly arranged on the rotating rod, a first power device for driving the outer cylinder to reciprocate is also arranged outside the feeding device, one end of the outer cylinder extends to the outside of the feeding device, and a second power device for driving the inner cylinder to eccentrically rotate is arranged at the end of the outer cylinder, the feeding pipe extends to the outside of the feeding device and is connected with a micro-feeding port, and a power motor for driving the rotating rod to rotate is arranged on the side of the feeding device.

[0008] A further technical solution is that the inner cylinder has a dispersion chamber, the inner wall of the dispersion chamber is fixedly provided with a mass block, the mass block is fitted near the grinding plate, both ends of the inner cylinder are respectively fixed with an inner end cover, the inner end cover is provided with a through hole, the through hole is coaxial with the outer cylinder, an elastic rubber ring is provided in the through hole, a connecting ring is embedded in the center of the rubber ring, and the feeding pipe passes through the connecting ring.

[0009] A further technical solution is that a plurality of grinding strips are arranged at intervals on the inner wall of the circular arc screen, the grinding strips extend axially along the circular arc screen, the grinding strips protrude from the inner surface of the circular arc screen, and the grinding strips have an inner arc surface facing the grinding plate, the outer diameter of the grinding plate is larger than the diameter of the inner filter barrel, the outer surface of the grinding plate protrudes from the outer surface of the inner filter barrel, and the inner barrel swings relative to the circular arc screen so that the grinding plate abuts against the inner arc surface of the grinding strip.

[0010] A further technical solution is that the partition plate includes a static plate and a swing plate, the static plate is fixed to the inner wall of the feeding device, the lower end of the static plate is rotatably connected to the swing plate, an adjustment frame is fixedly arranged on the outside of the feeding device, an adjustable telescopic rod is fixedly arranged on the adjustment frame, the side wall of the feeding device has a through groove, the axis of the adjustable telescopic rod passes through the through groove and is hinged to the swing plate, and the swing plate swings to change the size of the bottom opening of the first feeding chamber and the second feeding chamber.

[0011] According to a further technical solution, the interior of the mixing drum is divided into two left and right areas, namely a primary mixing chamber near the feeding device and a secondary mixing chamber near the left bracket. An outer spiral blade is fixedly arranged on the inner wall of the primary mixing chamber, and a mixing plate is fixedly arranged inside the secondary mixing chamber. A left tube and a right tube distributed laterally are also arranged at the axis of the mixing drum. The left tube is rotatably arranged in the secondary mixing chamber, and the right tube is slidably arranged in the primary mixing chamber. An intermediate disk is fixedly arranged at the end of the right tube near the left tube, and a plurality of cross bars are fixedly arranged on one side of the intermediate disk near the left tube. The plurality of cross bars are parallel to the left tube and are distributed circumferentially with the left tube as the axis. In the space surrounded by the plurality of cross bars, a plurality of reciprocating annular plates are arranged at intervals along the direction of the left tube, and the reciprocating annular plates are fixedly connected to the cross bars. A plurality of rotating annular plates distributed at intervals along the left tube are fixedly arranged on the left tube, and the reciprocating annular plates and the rotating annular plates are alternately distributed. A third power device for driving the left tube to rotate is arranged on the outside of the left bracket, and a fourth power device for driving the right tube to move left and right is arranged on the right bracket.

[0012] A further technical solution is that the third power device includes an outer gear ring fixedly arranged at the end of the mixing drum, the left bracket is located at the left end of the bottom frame, the left end of the discharging cone is rotatably connected to the left bracket, the left end of the left pipe passes through the left bracket and is fixedly provided with a first pulley, a transmission rod is rotatably provided at the lower side of the left bracket, a second pulley is fixedly provided at the left end of the transmission rod, the second pulley and the first pulley are connected by a transmission belt, a transmission tooth is fixedly provided at the right end of the transmission rod, and the transmission tooth is meshed with the outer gear ring; the fourth power device includes a telescopic rod bracket fixedly arranged in the right bracket, a hydraulic telescopic rod is fixedly arranged on the telescopic rod bracket, the shaft of the hydraulic telescopic rod is fixedly connected to the connecting rod, a fixing ring is fixedly provided on the lower side of the feeding device, the right end of the right pipe passes through the fixing ring and slides left and right in the fixing ring, and the upper end of the connecting rod is fixedly connected to the right end of the right pipe.

[0013] A further technical solution is that a plurality of water spray outlets are opened on the side wall of the left tube, the center of the middle disk is recessed to form a piston cavity, a piston body is fixedly arranged at the right end of the left tube, the piston body slides in the piston cavity, the right end of the left tube has an opening connected to the piston cavity, the right end of the right tube is connected to a hose, a liquid mixing tank is installed on the right side of the right bracket, and the lower end of the liquid mixing tank is connected to the hose so that the liquid in the liquid mixing tank can be connected to the right tube through the hose.

[0014] A further technical solution is that the first power device includes a spur rack, which is fixedly connected to a rack frame. The rack frame and the right tube are fixedly connected by a connecting column. An arc rack is fixedly arranged on the outer side of the arc screen, and the arc rack meshes with the spur rack; the second power device includes a driving wheel, which is coaxially fixedly connected to the outer end cover. The driving wheel is located outside the feeding device, and the outer end cover is located inside the feeding device. A center ring is fixedly arranged at the center of the driving wheel, and a driving pulley is fixedly arranged at the end of the center ring. A passive wheel is arranged on the outer side of the driving wheel, and the side of the driving wheel abuts against the side of the passive wheel. The outer end cover rotates to drive the passive wheel to rotate, and the shaft of the passive wheel is rotatably connected to the outer wall of the feeding device. A passive pulley is fixedly arranged at the axis center of the passive wheel, and the passive pulley and the driving pulley are connected by a belt. The axis center of the driving pulley extends inward and is fixedly connected to the inner end cover.

[0015] A further technical solution is that the driving device includes a stirring motor fixedly mounted on the bottom frame, two transmission outer rings are fixedly arranged on the outside of the stirring drum and are distributed at intervals, two roller brackets are fixedly installed on the bottom frame at intervals, a roller is rotatably arranged in each roller bracket, an intermediate shaft is coaxially fixedly arranged between the two rollers, and a transmission device is also arranged between the intermediate shaft and the stirring motor, and the transmission device transmits the power of the stirring motor to the intermediate shaft.

[0016] A process for preparing ground repair mortar comprises the following steps: S1: Material preparation, cement, sand, water, water reducing agent, early strength agent, expansion agent and polypropylene fiber, and mix them according to the following ratios: cement to sand is 1:2 to 1:3; water-cement ratio is 0.35-0.45; water reducing agent ratio is 0.5% to 1.5% of cement weight; early strength agent ratio is 2% to 4% of cement weight; expansion agent ratio is 6% to 10% of cement weight; fiber ratio is 0.9 to 1.2 kg / m³; S2: dry mixing, pouring cement and sand into the mixing drum 11 through the first feeding cavity and the second feeding cavity respectively, and feeding the polypropylene fiber into the feeding pipe through the micro-feeding port, and the cement and sand enter the cavity of the outer drum through the first opening and the second opening respectively, and the polypropylene fiber enters the cavity of the outer drum through the inner drum to complete preliminary mixing, and enters the interior of the mixing drum, and continues dry mixing to ensure that the fiber is evenly dispersed; S3: Wet mixing, add water reducer and early strength agent into water, stir evenly, gradually add mixed water into dry material through right and left pipes, finally add expansion agent, continue stirring, the right pipe moves left and right relative to the left pipe, driving the rotating annular sheet and the reciprocating annular sheet to move relative to each other to squeeze the agglomerated materials in the secondary mixing chamber, ensuring that the mortar is uniform and free of agglomerates; S4: Quality inspection and discharging, use a consistency meter to check to ensure that it meets the construction requirements, visually check whether the mortar is uniform and free of lumps or fiber agglomerations, and load the mixed mortar into transportation equipment to avoid segregation.

[0017] Compared with the prior art, the present invention has the following beneficial effects: In a ground repair mortar preparation system of the present invention, a feeding device is provided, and an outer cylinder and an inner cylinder are provided in the feeding device. A partition plate is provided in the feeding device to separate the feeding device into a first feeding chamber and a second feeding chamber. Cement and sand are poured into the feeding device through the first feeding chamber and the second feeding chamber respectively. The outer cylinder rotates clockwise or counterclockwise under the drive of the first power device. When the outer cylinder rotates to the first state, the first opening is aligned with the first feeding chamber, and the second opening is aligned with the second feeding chamber. The upper material moves downward into the inner cavity of the outer cylinder. When the outer cylinder rotates to the second state, The circular arc screen faces upward, and the first opening and the second opening face downward. The materials in the first feeding chamber and the second feeding chamber cannot directly pass through the circular arc screen into the inner cavity of the outer cylinder. As the outer cylinder switches between the first state and the second state, the materials intermittently enter the inner cavity of the outer cylinder. The purpose is to always retain a certain amount of air in the inner cavity of the outer cylinder to ensure that the materials can smoothly pass through the circular arc screen downward through the discharge port and enter the inner cavity of the mixing cylinder. If the inner cavity of the outer cylinder is filled with materials, the circular arc screen will be blocked and the materials cannot pass through, thereby reducing the risk of blockage at the feeding port during the initial process of dry powder mixing.

[0018] While the outer cylinder of the device reciprocates, the second power device drives the inner cylinder to rotate with the feed pipe as the axis, and the rotation direction of the inner cylinder is opposite to that of the outer cylinder. With the eccentric movement of the inner cylinder, the inner cylinder drives the grinding plate to abut against the inner wall of the outer cylinder, and the material inside the outer cylinder is squeezed by the grinding plate to achieve the purpose of preliminary mixing and breaking the lumps in the dry material. In the process of breaking the lumps of dry material, the inner concave surfaces of the grinding plate and the grinding strip approach each other to squeeze the lumps between the two. By setting the mass block, the strong rotation inertia is used to break the lumps. With the eccentric movement of the inner cylinder, the rubber ring is compressed and deformed in the radial direction, and the eccentric distance of the inner cylinder It also changes dynamically, that is, when the hardness of the agglomerates between the grinding plate and the grinding strips is relatively large, the eccentric distance of the inner cylinder will be reduced to increase the gap, facilitate the passage of the agglomerates, and ensure the smooth rotation of the inner cylinder. The material realizes the preliminary dry mixing process in the cavity of the outer cylinder. In order to improve the mixing efficiency of the additives, the dry powder additives are fed in through the micro-feed port of the feeding pipe. Under the rotation of the rotating rod, the spiral blades drive the dry powder additives into the inner cavity of the inner cylinder through the discharge slot, and the additives are discharged into the inner cavity of the outer cylinder through the inner filter barrel. Due to the eccentric movement of the inner cylinder, the dry powder additives are scattered by the centrifugal effect and mixed evenly.

[0019] During the wet mixing process inside the mixing drum, lumps will be generated due to the mixing of water and dry powder. In order to quickly break the lumps and accelerate the mixing efficiency, the mixing drum drives the outer gear ring to rotate synchronously, and the outer gear ring drives the transmission teeth to rotate. The transmission teeth drive the second pulley to rotate through the transmission rod, and the second pulley drives the first pulley and the left tube to rotate through the transmission belt. The left tube drives the rotating annular sheet to rotate, and the right tube drives several reciprocating annular sheets to move left and right synchronously through the middle disk and the cross bar. The wet material is driven upward by the stirring plate, and the wet material falls downward under the action of gravity. During the falling process, it passes through the gap between the rotating annular sheet and the reciprocating annular sheet. As the rotating annular sheet and the reciprocating annular sheet are relatively close, and the reciprocating annular sheet and the rotating annular sheet rotate relatively, the falling wet material is kneaded to quickly break the lumps caused by uneven mixing and accelerate the mixing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the 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, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a three-dimensional view of the present invention; Figure 3 It is a left side view of the present invention; Figure 4 yes Figure 3 Section view in AA; Figure 5 It is a schematic diagram of the internal structure of the feeding device in the present invention; Figure 6 It is a structural schematic diagram of the preliminary mixing device in the present invention; Figure 7 It is a schematic diagram of the inner cylinder structure in the present invention; Figure 8 It is a structural schematic diagram of the driving wheel in the present invention; Fig. 9 It is a schematic diagram of the structure of the reciprocating annular plate and the rotating annular plate in the present invention.

[0023] Description of reference numerals: Bottom frame 10, mixing drum 11, transmission outer ring 12, mixing motor 13, intermediate shaft 14, roller 15, outer gear ring 17, transmission gear 18, transmission rod 19, second pulley 20, first pulley 21, transmission belt 22, left bracket 23, discharge cone 24, discharge trough 25, right bracket 26, feeding device 27, roller bracket 28, transmission device 29, partition plate 30, first feed cavity 31, second feed cavity 32, discharge port 33, preliminary mixing device 35, straight rack 36, rack rack 37, connecting column 38, arc rack 39, outer cylinder 40, second opening 41, first opening 42, arc screen 43, inner cylinder 45, inner filter barrel 46, grinding plate 47, inner end cover 48, Mass block 49, rubber ring 50, feed pipe 51, discharge slot 52, rotating rod 53, connecting ring 54, static plate 56, swing plate 57, adjustment frame 58, adjusting telescopic rod 59, outer spiral blade 60, stirring plate 61, left tube 62, right tube 63, middle disk 64, cross bar 65, reciprocating annular plate 66, rotating annular plate 67, primary stirring chamber 70, secondary stirring chamber 71, telescopic rod bracket 80, hydraulic telescopic rod 81, connecting rod 82, fixing ring 83, arc plate 84, grinding strip 85, outer end cover 86, passive wheel 90, passive pulley 91, belt 92, active pulley 93, center ring 94, active wheel 95, liquid mixing tank 96, hose 97, piston body 98, piston chamber 99. DETAILED DESCRIPTION

[0024] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Refer to the attached Figure 1-9 The present invention provides a floor repair mortar preparation system, comprising a bottom frame 10 and a mixing drum 11 arranged on the upper side of the bottom frame 10, a left bracket 23 and a right bracket 26 are fixedly arranged at the left and right ends of the bottom frame 10, the mixing drum 11 is rotatably arranged between the left bracket 23 and the right bracket 26, and a driving device for driving the mixing drum 11 to rotate is also arranged on the bottom frame 10, a discharging cone 24 is fixedly arranged at one end of the mixing drum 11, a discharging trough 25 is arranged at the bottom of the discharging cone 24, a feeding device 27 is fixedly arranged on the right bracket 26, and a feeding device 27 is fixedly arranged on the right bracket 26. The upper end of the device 27 has a feed port, the lower end of the feed device 27 has a discharge port 33, the end of the mixing drum 11 away from the discharge cone 24 has a circular opening, the discharge port 33 of the feed device 27 extends into the circular opening of the mixing drum 11, a partition plate 30 is arranged in the feed port of the feed device 27, the partition plate 30 divides the feed port into a first feed chamber 31 and a second feed chamber 32, and a preliminary mixing device 35 is rotatably arranged below the first feed chamber 31 and the second feed chamber 32, the preliminary mixing device 35 includes an outer cylinder 40 and an inner portion of the outer cylinder 40. The inner cylinder 45 rotates eccentrically, and the two ends of the outer cylinder 40 are fixedly provided with outer end covers 86. The side wall of the outer cylinder 40 includes two arc-shaped parts connected to each other, which are arc plates 84 and arc screens 43. The arc plates 84 are provided with a second opening 41 and a first opening 42. The inner cylinder 45 includes two arc-shaped parts connected to each other, which are grinding plates 47 and inner filter barrels 46. The grinding plates 47 are smooth hard arc-shaped plates. A feed pipe 51 is also provided inside the inner cylinder 45. The feed pipe 51 is concentrically arranged with the outer cylinder 40, and a discharge slot is provided on the side wall of the feed pipe 51. 52, and a rotating rod 53 is rotatably provided inside the feeding tube 51, and a spiral blade for feeding is fixedly provided on the rotating rod 53, and a first power device for driving the outer cylinder 40 to reciprocate is also provided outside the feeding device 27, one end of the outer cylinder 40 extends to the outside of the feeding device 27, and a second power device for driving the inner cylinder 45 to eccentrically rotate is provided at the end of the outer cylinder 40, the feeding tube 51 extends to the outside of the feeding device 27 and is connected to a micro-feeding port, and a power motor for driving the rotating rod 53 to rotate is provided on the side of the feeding device 27.

[0028] Preferably, the inner cylinder 45 has a dispersion chamber inside, and a mass block 49 is fixedly set on the inner wall of the dispersion chamber. The mass block 49 is fitted near the grinding plate 47. An inner end cover 48 is fixedly set at both ends of the inner cylinder 45. A through hole is opened on the inner end cover 48. The through hole is coaxial with the outer cylinder 40. An elastic rubber ring 50 is set in the through hole. A connecting ring 54 is embedded in the center of the rubber ring 50, and the feeding pipe 51 passes through the connecting ring 54.

[0029] Preferably, a plurality of grinding strips 85 are arranged at intervals on the inner wall of the arc screen 43, and the grinding strips 85 extend axially along the arc screen 43. The grinding strips 85 protrude from the inner surface of the arc screen 43, and the grinding strips 85 have an inner arc surface facing the grinding plate 47. The outer diameter of the grinding plate 47 is larger than the diameter of the inner filter barrel 46, and the outer surface of the grinding plate 47 protrudes from the outer surface of the inner filter barrel 46. The inner cylinder 45 swings relative to the arc screen 43 so that the grinding plate 47 abuts against the inner arc surface of the grinding strip 85.

[0030] Preferably, the partition plate 30 includes a static plate 56 and a swing plate 57, the static plate 56 is fixed to the inner wall of the feeding device 27, and the lower end of the static plate 56 is rotatably connected to the swing plate 57. An adjustment frame 58 is fixedly arranged on the outside of the feeding device 27, and an adjustable telescopic rod 59 is fixedly arranged on the adjustment frame 58. The side wall of the feeding device 27 has a through groove, and the axis of the adjustable telescopic rod 59 passes through the through groove and is hinged to the swing plate 57. The swing plate 57 swings to change the size of the bottom opening of the first feeding chamber 31 and the second feeding chamber 32.

[0031] Preferably, the interior of the mixing drum 11 is divided into two left and right areas, namely, a preliminary mixing chamber 70 near the feeding device 27 and a secondary mixing chamber 71 near the left bracket 23. The inner wall of the preliminary mixing chamber 70 is fixedly provided with an outer spiral blade 60, and the interior of the secondary mixing chamber 71 is fixedly provided with a mixing plate 61. The axis of the mixing drum 11 is also provided with a transversely distributed left tube 62 and a right tube 63. The left tube 62 is rotatably provided in the secondary mixing chamber 71, and the right tube 63 is slidably provided in the preliminary mixing chamber 70. The end of the right tube 63 near the left tube 62 is fixedly provided with an intermediate disk 64, and the intermediate disk 64 is close to the left tube 62. A plurality of cross bars 65 are fixedly provided on one side of the left tube 62. The plurality of cross bars 65 are parallel to the left tube 62 and are distributed circumferentially with the left tube 62 as the axis. A plurality of reciprocating annular plates 66 are arranged at intervals along the direction of the left tube 62 in the space surrounded by the plurality of cross bars 65. The reciprocating annular plates 66 are fixedly connected to the cross bars 65. A plurality of rotating annular plates 67 are fixedly provided on the left tube 62 and are distributed at intervals along the left tube 62. The reciprocating annular plates 66 and the rotating annular plates 67 are distributed alternately. A third power device for driving the left tube 62 to rotate is provided on the outside of the left bracket 23, and a fourth power device for driving the right tube 63 to move left and right is provided on the right bracket 26.

[0032] Preferably, the third power device includes an outer gear ring 17 fixedly arranged at the end of the mixing drum 11, a left bracket 23 is located at the left end of the bottom frame 10, the left end of the discharging cone 24 is rotatably connected to the left bracket 23, the left end of the left tube 62 passes through the left bracket 23 and is fixedly provided with a first pulley 21, a transmission rod 19 is rotatably arranged on the lower side of the left bracket 23, a second pulley 20 is fixedly arranged at the left end of the transmission rod 19, the second pulley 20 and the first pulley 21 are connected by a transmission belt 22, a transmission tooth 18 is fixedly arranged at the right end of the transmission rod 19, and the transmission tooth 18 is meshed with the outer gear ring 17.

[0033] Preferably, the fourth power device includes a telescopic rod bracket 80 fixedly arranged in the right bracket 26, a hydraulic telescopic rod 81 fixedly arranged on the telescopic rod bracket 80, the axis of the hydraulic telescopic rod 81 is fixedly connected to a connecting rod 82, a fixing ring 83 is fixedly arranged on the lower side of the feeding device 27, the right end of the right tube 63 passes through the fixing ring 83 and slides left and right in the fixing ring 83, and the upper end of the connecting rod 82 is fixedly connected to the right end of the right tube 63.

[0034] Preferably, a plurality of water spray outlets are provided on the side wall of the left tube 62, the center of the middle disk 64 is recessed to form a piston cavity 99, a piston body 98 is fixedly provided at the right end of the left tube 62, and the piston body 98 slides in the piston cavity 99, the right end of the left tube 62 has an opening connected to the piston cavity 99, a hose 97 is connected to the right end of the right tube 63, a liquid mixing tank 96 is installed on the right side of the right bracket 26, and the lower end of the liquid mixing tank 96 is connected to the hose 97 so that the liquid in the liquid mixing tank 96 is connected to the right tube 63 through the hose 97.

[0035] Preferably, the first power device includes a spur rack 36, which is fixedly connected to a rack frame 37. The rack frame 37 and the right tube 63 are fixedly connected via a connecting column 38. An arc-shaped rack 39 is fixedly arranged on the outer side of the arc screen 43, and the arc-shaped rack 39 is meshed with the spur rack 36.

[0036] Preferably, the second power device includes a driving wheel 95, which is coaxially fixedly connected to the outer end cover 86. The driving wheel 95 is located outside the feeding device 27, and the outer end cover 86 is located inside the feeding device 27. A center ring 94 is fixedly set at the center of the driving wheel 95, and a driving pulley 93 is fixedly set at the end of the center ring 94. A passive wheel 90 is set on the outside of the driving wheel 95, and the side of the driving wheel 95 abuts the side of the passive wheel 90. The outer end cover 86 rotates to drive the passive wheel 90 to rotate, and the axis of the passive wheel 90 is rotatably connected to the outer side wall of the feeding device 27. A passive pulley 91 is fixedly set at the axis of the passive wheel 90, and the passive pulley 91 and the driving pulley 93 are connected by a belt 92.

[0037] Preferably, the driving device includes a stirring motor 13 fixedly mounted on the bottom frame 10, two transmission outer rings 12 are fixedly arranged on the outside of the stirring drum 11 and are distributed at intervals, two roller brackets 28 are fixedly installed at intervals on the bottom frame 10, a roller 15 is rotatably arranged in each roller bracket 28, an intermediate shaft 14 is coaxially fixedly arranged between the two rollers 15, and a transmission device 29 is also arranged between the intermediate shaft 14 and the stirring motor 13, and the transmission device 29 transmits the power of the stirring motor 13 to the intermediate shaft 14.

[0038] A process for preparing ground repair mortar comprises the following steps: S1: Material preparation, cement, sand, water, water reducing agent, early strength agent, expansion agent and polypropylene fiber, and mix them according to the following ratios: cement to sand is 1:2 to 1:3; water-cement ratio is 0.35-0.45; water reducing agent ratio is 0.5% to 1.5% of cement weight; early strength agent ratio is 2% to 4% of cement weight; expansion agent ratio is 6% to 10% of cement weight; fiber ratio is 0.9 to 1.2 kg / m³; S2: dry mixing, pouring cement and sand into the mixing drum 11 through the first feeding cavity and the second feeding cavity respectively, and feeding the polypropylene fiber into the feeding pipe through the micro-feeding port, and the cement and sand enter the cavity of the outer drum through the first opening and the second opening respectively, and the polypropylene fiber enters the cavity of the outer drum through the inner drum to complete preliminary mixing, and enters the interior of the mixing drum, and continues dry mixing to ensure that the fiber is evenly dispersed; S3: Wet mixing, add water reducer and early strength agent into water, stir evenly, gradually add mixed water into dry material through right and left pipes, finally add expansion agent, continue stirring, the right pipe moves left and right relative to the left pipe, driving the rotating annular sheet and the reciprocating annular sheet to move relative to each other to squeeze the agglomerated materials in the secondary mixing chamber, ensuring that the mortar is uniform and free of agglomerates; S4: Quality inspection and discharging, use a consistency meter to check to ensure that it meets the construction requirements, visually check whether the mortar is uniform and free of lumps or fiber agglomerations, and load the mixed mortar into transportation equipment to avoid segregation.

[0039] The working steps of this device: Cement and sand are poured into the feeding device 27 through the first feeding cavity 31 and the second feeding cavity 32 respectively, the hydraulic telescopic rod 81 is started, driving the connecting rod 82 and the right tube 63 to move left and right, the right tube 63 drives the rack frame 37 and the spur rack 36 to move left and right synchronously through the connecting column 38, the spur rack 36 drives the arc rack 39 to rotate the outer cylinder 40 clockwise or counterclockwise, when the outer cylinder 40 rotates to the first state, the first opening 42 is aligned with the first feeding cavity 31, the second opening 41 is aligned with the second feeding cavity 32, the upper side material moves down into the inner cavity of the outer cylinder 40, when the outer cylinder 40 rotates to the second state, the circular The arc screen 43 faces upward, and the first opening 42 and the second opening 41 face downward. The materials in the first feeding chamber 31 and the second feeding chamber 32 cannot directly pass through the arc screen 43 into the inner cavity of the outer cylinder 40. As the outer cylinder 40 switches between the first state and the second state, the materials intermittently enter the inner cavity of the outer cylinder 40. The purpose is to always retain a certain amount of air in the inner cavity of the outer cylinder 40 to ensure that the materials can smoothly pass through the arc screen 43 downward through the discharge port 33 and enter the inner cavity of the mixing cylinder 11. If the inner cavity of the outer cylinder 40 is filled with materials, the arc screen 43 will be blocked, and the materials cannot pass through, causing blockage.

[0040] While the outer cylinder 40 reciprocates, the outer end cover 86 rotates synchronously with the outer cylinder 40, and the outer end cover 86 drives the driving wheel 95 to rotate synchronously, and the driving wheel 95 drives the passive wheel 90 to rotate, and the rotation direction of the passive wheel 90 is opposite to that of the driving wheel 95. The passive wheel 90 drives the driving pulley 93 to rotate in the same direction through the belt 92, and the driving pulley 93 drives the inner cylinder 45 to rotate, and the inner cylinder 45 rotates around the feeding pipe 51 as the axis, and the rotation direction of the inner cylinder 45 is opposite to that of the outer cylinder 40. With the eccentric movement of the inner cylinder 45, the inner cylinder 45 drives the grinding plate 47 to abut against the inner wall of the outer cylinder 40, and the material inside the outer cylinder 40 is squeezed by the grinding plate 47 to achieve preliminary mixing and break up the agglomerates in the dry material.

[0041] In the process of breaking the dry material agglomerates, the inner concave surfaces of the grinding plate 47 and the grinding bar 85 are close to each other to squeeze the agglomerates between the two. By setting the mass block 49, the strong rotational inertia is used to break the agglomerates. With the eccentric movement of the inner cylinder 45, the rubber ring 50 is compressed and deformed in the radial direction, and the eccentric distance of the inner cylinder 45 also changes dynamically. That is to say, when the hardness of the agglomerates between the grinding plate 47 and the grinding bar 85 is large, the eccentric distance of the inner cylinder 45 will be reduced to increase the gap, which is convenient for the agglomerates to pass through, thereby ensuring the smooth rotation of the inner cylinder 45.

[0042] The material is initially dry mixed in the cavity of the outer cylinder 40. In order to improve the mixing efficiency of the additive, the dry powder additive is fed in through the micro-feed port of the feed pipe 51. Under the rotation of the rotating rod 53, the spiral blade drives the dry powder additive to enter the inner cavity of the inner cylinder 45 through the discharge slot 52. The additive is discharged into the inner cavity of the outer cylinder 40 through the inner filter barrel 46, completing the dry powder mixing process.

[0043] After the dry powder is preliminarily mixed, it is discharged into the preliminary stirring chamber 70. As the mixing drum 11 rotates, the materials are mixed in large quantities in the preliminary stirring chamber 70, and gradually move to the left into the secondary stirring chamber 71 under the guidance of the outer spiral blade 60. As the stirring plate 61 is moved, the dry powder is remixed, and the liquid additives and water are stored in the liquid mixing tank 96 and added to the piston chamber 99 through the hose 97 and the right tube 63. As the right tube 63 reciprocates, the liquid in the piston chamber 99 is squeezed by the piston body 98, and the volume is reduced. The liquid in the piston chamber 99 is evenly sprayed out through the water spray port on the left tube 62. As the stirring plate 61 is moved, the final wet mixing is achieved.

[0044] During the wet mixing process, due to the mixing of water and dry powder, lumps will be generated. In order to quickly break the lumps and accelerate the mixing efficiency, the mixing drum 11 drives the outer gear ring 17 to rotate synchronously, and the outer gear ring 17 drives the transmission tooth 18 to rotate. The transmission tooth 18 drives the second pulley 20 to rotate through the transmission rod 19. The second pulley 20 drives the first pulley 21 and the left tube 62 to rotate through the transmission belt 22. The left tube 62 drives the rotating annular sheet 67 to rotate, and the right tube 63 drives a plurality of reciprocating annular sheets 66 to move left and right synchronously through the middle disk 64 and the cross bar 65. The wet material is driven upward by the stirring plate 61, and the wet material falls downward under the action of gravity. During the falling process, it passes through the gap between the rotating annular sheet 67 and the reciprocating annular sheet 66. As the rotating annular sheet 67 and the reciprocating annular sheet 66 are relatively close, and the reciprocating annular sheet 66 and the rotating annular sheet 67 rotate relatively, the falling wet material is kneaded to quickly break the lumps caused by uneven mixing and accelerate the mixing efficiency.

[0045] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A floor repair mortar preparation system, comprising a bottom frame and a mixing drum arranged on the upper side of the bottom frame, characterized in that: The left and right ends of the bottom frame are respectively fixed with a left bracket and a right bracket, a mixing drum is rotatably arranged between the left bracket and the right bracket, the bottom frame is also provided with a driving device that drives the mixing drum to rotate, a discharging cone is fixedly arranged at one end of the mixing drum, a discharging trough is opened at the bottom of the discharging cone, a feeding device is fixedly arranged on the right bracket, the upper end of the feeding device is provided with a feeding port, and the lower end of the feeding device is provided with a discharging port, the mixing drum has a circular opening at one end away from the discharging cone, the discharging port of the feeding device extends into the circular opening of the mixing drum, a partition plate is arranged in the feeding port of the feeding device, the partition plate divides the feeding port into a first feeding chamber and a second feeding chamber, a preliminary mixing device is rotatably arranged below the first feeding chamber and the second feeding chamber, the preliminary mixing device comprises an outer cylinder and an inner cylinder eccentrically rotating inside the outer cylinder, outer end covers are fixedly arranged at both ends of the outer cylinder, The side wall of the outer cylinder includes two arc-shaped parts connected to each other, which are a circular arc plate and a circular arc screen respectively, and a second opening and a first opening are provided on the circular arc plate, and the inner cylinder includes two arc-shaped parts connected to each other, which are a grinding plate and an inner filter barrel respectively, and the grinding plate is a smooth hard arc plate. A feeding pipe is also provided inside the inner cylinder, and the feeding pipe is concentrically arranged with the outer cylinder, and a discharge groove is provided on the side wall of the feeding pipe, and a rotating rod is rotatably arranged inside the feeding pipe, and a spiral blade for feeding is fixed on the rotating rod, and a first power device for driving the outer cylinder to reciprocate is also provided outside the feeding device, and one end of the outer cylinder extends to the outside of the feeding device, and a second power device for driving the inner cylinder to eccentrically rotate is provided at the end of the outer cylinder, and the feeding pipe extends to the outside of the feeding device and is connected to a micro-feeding port, and a power motor for driving the rotating rod to rotate is provided on the side of the feeding device.

2. A ground repair mortar preparation system according to claim 1, characterized in that: The inner cylinder has a dispersion chamber inside, a mass block is fixedly arranged on the inner wall of the dispersion chamber, and the mass block is attached to a position close to the grinding plate. An inner end cover is fixedly arranged at each end of the inner cylinder, and a through hole is opened on the inner end cover. The through hole is coaxial with the outer cylinder, and an elastic rubber ring is arranged in the through hole. A connecting ring is embedded in the center of the rubber ring, and the feeding pipe passes through the connecting ring.

3. A ground repair mortar preparation system according to claim 1, characterized in that: A plurality of grinding strips are arranged at intervals on the inner wall of the circular arc screen, and the grinding strips extend along the axial direction of the circular arc screen, and protrude from the inner surface of the circular arc screen, and have an inner arc surface facing the grinding plate, and the outer diameter of the grinding plate is larger than the diameter of the inner filter barrel, and the outer surface of the grinding plate protrudes from the outer surface of the inner filter barrel, and the inner cylinder swings relative to the circular arc screen so that the grinding plate abuts against the inner arc surface of the grinding strip.

4. A ground repair mortar preparation system according to claim 3, characterized in that: The partition plate includes a static plate and a swing plate, the static plate is fixed to the inner wall of the feeding device, the lower end of the static plate is rotatably connected to the swing plate, an adjustment frame is fixedly arranged on the outside of the feeding device, an adjustment telescopic rod is fixedly arranged on the adjustment frame, the side wall of the feeding device has a through groove, the axis of the adjustment telescopic rod passes through the through groove and is hinged to the swing plate, and the swing plate swings to change the size of the bottom opening of the first feeding chamber and the second feeding chamber.

5. A ground repair mortar preparation system according to claim 2, characterized in that: The interior of the mixing drum is divided into two left and right areas, which are a preliminary mixing chamber near the feeding device and a secondary mixing chamber near the left bracket. An outer spiral blade is fixedly arranged on the inner wall of the preliminary mixing chamber, and a mixing plate is fixedly arranged inside the secondary mixing chamber. A left tube and a right tube distributed laterally are also arranged at the axis of the mixing drum. The left tube is rotatably arranged in the secondary mixing chamber, and the right tube is slidably arranged in the preliminary mixing chamber. An intermediate disk is fixedly arranged at the end of the right tube near the left tube. A plurality of cross bars are fixedly arranged on one side of the intermediate disk near the left tube. The plurality of cross bars are parallel to the left tube and are distributed circumferentially with the left tube as the axis. A plurality of reciprocating annular plates are arranged at intervals along the direction of the left tube in the space surrounded by the plurality of cross bars. The reciprocating annular plates are fixedly connected to the cross bars. A plurality of rotating annular plates distributed at intervals along the left tube are fixedly arranged on the left tube, and the reciprocating annular plates and the rotating annular plates are alternately distributed. A third power device for driving the left tube to rotate is arranged on the outside of the left bracket, and a fourth power device for driving the right tube to move left and right is arranged on the right bracket.

6. A ground repair mortar preparation system according to claim 5, characterized in that: The third power device includes an outer gear ring fixedly arranged at the end of the mixing drum, the left bracket is located at the left end of the bottom frame, the left end of the discharge cone is rotatably connected to the left bracket, the left end of the left pipe passes through the left bracket and is fixedly provided with a first pulley, a transmission rod is rotatably arranged at the lower side of the left bracket, a second pulley is fixedly arranged at the left end of the transmission rod, the second pulley and the first pulley are connected by a transmission belt, and a transmission tooth is fixedly arranged at the right end of the transmission rod, and the transmission tooth is meshed with the outer gear ring; The fourth power device includes a telescopic rod bracket fixedly arranged in the right bracket, a hydraulic telescopic rod is fixedly arranged on the telescopic rod bracket, the shaft of the hydraulic telescopic rod is fixedly connected to the connecting rod, a fixing ring is fixedly arranged on the lower side of the feeding device, the right end of the right tube passes through the fixing ring and slides left and right in the fixing ring, and the upper end of the connecting rod is fixedly connected to the right end of the right tube.

7. A ground repair mortar preparation system according to claim 5, characterized in that: The side wall of the left tube is provided with a plurality of water spraying ports, the center of the middle disk is recessed to form a piston cavity, a piston body is fixedly provided at the right end of the left tube, and the piston body slides in the piston cavity, the right end of the left tube has an opening connected to the piston cavity, the right end of the right tube is connected to a hose, a liquid mixing tank is installed on the right side of the right bracket, and the lower end of the liquid mixing tank is connected to the hose so that the liquid in the liquid mixing tank can be connected to the right tube through the hose.

8. A ground repair mortar preparation system according to claim 6, characterized in that: The first power device comprises a spur rack, the spur rack is fixedly connected to a rack frame, the rack frame and the right tube are fixedly connected via a connecting column, an arc-shaped rack is fixedly arranged on the outer side of the arc screen, and the arc-shaped rack meshes with the spur rack; The second power device includes a driving wheel, which is coaxially fixedly connected to the outer end cover, the driving wheel is located outside the feeding device, and the outer end cover is located inside the feeding device. A center ring is fixedly arranged at the center of the driving wheel, and a driving pulley is fixedly arranged at the end of the center ring. A passive wheel is arranged on the outside of the driving wheel, and the side of the driving wheel abuts against the side of the passive wheel. The outer end cover rotates to drive the passive wheel to rotate, and the shaft of the passive wheel is rotatably connected to the outer side wall of the feeding device. A passive pulley is fixedly arranged at the axis of the passive wheel, and the passive pulley and the driving pulley are connected by a belt. The axis of the driving pulley extends inward and is fixedly connected to the inner end cover.

9. A ground repair mortar preparation system according to claim 1, characterized in that: The driving device includes a stirring motor fixedly mounted on the bottom frame, two transmission outer rings distributed at intervals are fixedly arranged on the outside of the stirring drum, two roller brackets are fixedly installed at intervals on the bottom frame, a roller is rotatably arranged in each of the roller brackets, an intermediate shaft is coaxially fixedly arranged between the two rollers, and a transmission device is also arranged between the intermediate shaft and the stirring motor, and the transmission device transmits the power of the stirring motor to the intermediate shaft.

10. A process for preparing floor repair mortar, applied to a floor repair mortar preparation system according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Material preparation, cement, sand, water, water reducing agent, early strength agent, expansion agent and polypropylene fiber, and mix them according to the following ratios: cement to sand is 1:2 to 1:3; water-cement ratio is 0.35-0.45; water reducing agent ratio is 0.5% to 1.5% of cement weight; early strength agent ratio is 2% to 4% of cement weight; expansion agent ratio is 6% to 10% of cement weight; fiber ratio is 0.9-1.2kg / m³; S2: dry mixing, pouring cement and sand into the mixing drum 11 through the first feeding cavity and the second feeding cavity respectively, and feeding the polypropylene fiber into the feeding pipe through the micro-feeding port, and the cement and sand enter the cavity of the outer drum through the first opening and the second opening respectively, and the polypropylene fiber enters the cavity of the outer drum through the inner drum to complete preliminary mixing, and enters the interior of the mixing drum, and continues dry mixing to ensure that the fiber is evenly dispersed; S3: Wet mixing, add water reducer and early strength agent into water, stir evenly, gradually add mixed water into dry material through right and left pipes, finally add expansion agent, continue stirring, the right pipe moves left and right relative to the left pipe, driving the rotating annular sheet and the reciprocating annular sheet to move relative to each other to squeeze the agglomerated materials in the secondary mixing chamber, ensuring that the mortar is uniform and free of agglomerates; S4: Quality inspection and discharging, use a consistency meter to check to ensure that it meets the construction requirements, visually check whether the mortar is uniform and free of lumps or fiber agglomerations, and load the mixed mortar into transportation equipment to avoid segregation.

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