Self-proportioning lightweight concrete residue prevention and mixing device

Abstract

The utility model discloses a self-proportioning lightweight concrete prevents residual and mixing device, including base, the top of base is provided with the sliding plate, one side of sliding plate is provided with the pivot, and one side of pivot is connected with the stirring bin, one side of stirring bin is provided with the scraper mechanism, and the other side of stirring bin is provided with the feed port, one side of feed port is provided with the dust cover, one side of dust cover is provided with the glue spraying mechanism, and the bottom of feed plate is connected with the reset piston, one side of reset piston is provided with the check valve, one side of check valve is provided with the foamed plastic warehouse, and the other side of check valve is connected with the stirring bin, and the cement paste is pushed reset piston through the oblique feed plate, and the resistance of buffer spring is overcome, and the vertical displacement is along the limiting groove, thereby opens the check valve, makes the foamed plastic enter the stirring bin from the foamed plastic warehouse, and this mechanical type trigger mechanism does not need external sensor or energy, realizes the automatic proportioning of foamed plastic and cement paste.

Description

Technical Field

[0001] This utility model relates to the field of concrete preparation technology, and more specifically, to a self-proportioning lightweight concrete residue prevention and mixing device. Background Technology

[0002] With the continuous advancement of urbanization, the demand for environmentally friendly materials in the construction industry is gradually increasing. Environmentally friendly lightweight aggregate concrete, as a material that balances ecological environmental protection and building performance, is gradually gaining attention. It not only demonstrates advantages in reducing the overall weight of building structures but also plays a vital role in reducing energy consumption and resource depletion.

[0003] However, research has revealed the following problems with existing lightweight concrete preparation methods: the mix proportions rely on external energy and sensors; water is added from the top, leading to localized over-wetting and clumping; high residue levels after unloading, and significant risks to unloading stability.

[0004] Therefore, a self-proportioning lightweight concrete residue prevention and mixing device is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a self-proportioning lightweight concrete residue prevention and mixing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a self-proportioning lightweight concrete residue prevention and mixing device, comprising a base, a sliding plate on the top of the base, a rotating shaft on one side of the sliding plate, a mixing chamber connected to one side of the rotating shaft, a scraper mechanism on one side of the mixing chamber, a feed inlet on the other side of the mixing chamber, a dust cover on one side of the feed inlet, and a glue spraying mechanism on one side of the dust cover. The glue spraying mechanism includes a dual hopper, a feed plate, a reset piston, a buffer spring, a one-way valve, and a foaming glue hopper. A reset piston is connected to the bottom of the feed plate. A one-way valve is located on one side of the reset piston. A foaming glue hopper is located on one side of the one-way valve. The other side of the one-way valve is connected to the mixing chamber. A mixing assembly is located inside the mixing chamber. The mixing assembly includes a mixing rod, and a one-way nozzle is located on the outer wall of the mixing rod.

[0007] Preferably, the scraper mechanism includes a bin cover, a drive assembly, a fixed rod, a telescopic rod, and a scraping ring. The drive assembly is located at the center of the bin cover. A fixed rod is located on one side of the drive assembly. Displacement mechanisms are located on both sides of the fixed rod. A telescopic rod is connected to the other side of the drive assembly. There are four sets of telescopic rods, and the four sets of telescopic rods are evenly arranged along the circumference of the bin cover. A scraping ring is located on one side of each telescopic rod.

[0008] Preferably, the displacement mechanism includes a slide rail, a pulley, a rotating block, a hydraulic rod, and a fixed platform. The pulley is connected to the fixed platform via the slide rail. A rotating block is provided on one side of the pulley, and a hydraulic rod is provided on one side of the rotating block. A fixed platform is provided at one end of the hydraulic rod. The scraper mechanism can move back and forth along the horizontal direction of the fixed platform via the slide rail, and the pulley can move up and down along the vertical direction of the fixed platform via the hydraulic rod.

[0009] Preferably, the feed plate is obliquely disposed inside the dual hopper, a buffer spring is provided on one side of the reset piston, and a limit groove is provided on one side of the reset piston. Cement slurry enters the feed port through the feed plate, and the cement slurry pushes the reset piston to move in the vertical direction of the limit groove through the feed plate, thereby triggering the one-way valve to allow the foamed adhesive in the foamed adhesive hopper to enter the mixing chamber.

[0010] Preferably, the sliding plate is slidably connected to the base, and a telescopic component is provided on one side of the rotating shaft. The telescopic component enables the mixing chamber to rotate along the circumferential direction of the rotating shaft, and the scraper mechanism rotates synchronously with the mixing chamber through the hydraulic rod. The chamber cover is moved away from the mixing chamber through the slide rail.

[0011] Preferably, the stirring assembly includes a stirring rod, a one-way nozzle, a drive motor, a water inlet pipe, and a water tank. The drive motor is located on one side of the stirring rod, and water inlet pipes are located on both sides of the drive motor. One side of the water inlet pipe is connected to the water tank, and the water tank is connected to the center of the stirring rod through the water inlet pipe, so that the water in the water tank enters the stirring chamber through the one-way nozzle.

[0012] Preferably, an auxiliary support is provided on one side of the glue spraying mechanism, the water supply pipe is a soft water pipe, and when the mixing chamber moves horizontally along the base via the sliding plate, the glue spraying mechanism is fixed in its original position by the auxiliary support.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] Compared with existing technologies, the spraying mechanism of this self-proportioning lightweight concrete anti-residue and mixing device automatically triggers the addition of foaming adhesive by utilizing the weight and fluidity of the cement slurry itself. The cement slurry pushes the reset piston through the inclined feed plate, overcomes the resistance of the buffer spring, and moves vertically along the limiting groove, thereby opening the one-way valve and allowing the foaming adhesive to enter the mixing chamber from the foaming adhesive hopper. This mechanical triggering mechanism does not require external sensors or energy and realizes the automatic proportioning of foaming adhesive and cement slurry.

[0015] Compared with existing technologies, this self-proportioning lightweight concrete residue prevention and mixing device includes a mixing rod, a one-way nozzle, a drive motor, a water supply pipe and a water tank. The water tank is connected to the center of the mixing rod through a flexible water supply pipe. The water is directly sprayed into the mixing chamber through the one-way nozzle on the outer wall of the mixing rod. This design replaces the traditional top water supply method, so that the water is evenly distributed in the mixture.

[0016] Compared with existing technologies, this self-proportioning lightweight concrete residue prevention and mixing device uses a scraper mechanism and a displacement mechanism in combination. The drive component drives the telescopic rod so that the scraping ring is in close contact with the inner wall of the mixing chamber for scraping. The displacement mechanism allows the scraper mechanism to move in the horizontal and vertical directions and rotate synchronously with the mixing chamber, which reduces concrete adhesion and residue, reduces material waste, and facilitates subsequent cleaning. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0018] Figure 2 This is a side view of the overall three-dimensional structure of this utility model.

[0019] Figure 3 This is a three-dimensional structural diagram of the present invention viewed from below.

[0020] Figure 4 This is a partial three-dimensional structural diagram of the mixing chamber and water tank of this utility model.

[0021] Figure 5 This is a partial three-dimensional structural diagram of the glue spraying mechanism of this utility model.

[0022] Figure 6 This is a partial cross-sectional view of the adhesive spraying mechanism of this utility model.

[0023] Figure 7 This is a partial three-dimensional structural diagram of the base and sliding plate of this utility model.

[0024] Figure 8 This is a partial three-dimensional structural diagram of the mixing chamber and scraper mechanism of this utility model.

[0025] Figure 9 This is a cross-sectional view of the mixing chamber and scraper mechanism of this utility model.

[0026] The attached diagram is labeled as follows: 1. Base; 2. Sliding plate; 21. Rotating shaft; 22. Telescopic assembly; 3. Mixing chamber; 31. Feed inlet; 4. Scraper mechanism; 41. Chamber cover; 42. Drive assembly; 43. Fixed rod; 44. Telescopic rod; 45. Scraping ring; 5. Dust cover; 6. Glue spraying mechanism; 61. Dual hopper; 62. Feeding plate; 63. Reset piston; 64. Buffer spring; 65. One-way valve; 66. Foaming glue chamber; 7. Mixing assembly; 71. Mixing rod; 72. One-way nozzle; 73. Drive motor; 74. Water pipe; 75. Water tank; 8. Displacement mechanism; 81. Slide rail; 82. Pulley; 83. Rotating block; 84. Hydraulic rod; 85. Fixed platform; 9. Limiting groove; 10. Auxiliary support. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0028] As attached Figures 1 to 9 The device and method for preventing residue in self-proportioning lightweight concrete include a base 1, a sliding plate 2 on the top of the base 1, a rotating shaft 21 on one side of the sliding plate 2, a mixing chamber 3 connected to one side of the rotating shaft 21, a scraper mechanism 4 on one side of the mixing chamber 3, a feed inlet 31 on the other side of the mixing chamber 3, a dust cover 5 on one side of the feed inlet 31, and a glue spraying mechanism 6 on one side of the dust cover 5. The glue spraying mechanism 6 includes a dual hopper 61, a feed plate 62, a reset piston 63, a buffer spring 64, a one-way valve 65, and a foaming glue hopper 66. The bottom of the feed plate 62 is connected to the reset piston 63. A one-way valve 65 is located on one side of the reset piston 63, and a foaming glue hopper 66 is located on one side of the one-way valve 65. The other side of the one-way valve 65 is connected to the mixing chamber 3. A mixing assembly 7 is installed inside the mixing chamber 3. The mixing assembly 7 includes a mixing rod 71, and a one-way nozzle 72 is installed on the outer wall of the mixing rod 71.

[0029] Specifically, the base 1 is welded from Q235 steel plate, and a sliding plate 2 is installed on the top. The sliding plate 2 is slidably connected to the base 1 through a linear guide rail of model HGH20CA to achieve horizontal displacement. A rotating shaft 21 is fixed on one side of the sliding plate 2. The rotating shaft 21 is made of 45# steel and is connected to the mixing chamber 3 through a bearing seat of model UCP205, so that the mixing chamber 3 can rotate around the rotating shaft 21 to achieve tilted unloading. A feed inlet 31 is welded to one side of the mixing chamber 3. The feed inlet 31 is covered with a dust cover 5 to prevent dust from escaping. The dust cover 5 is made of transparent PC material.

[0030] A glue spraying mechanism 6 is installed on one side of the dust cover 5. The core innovation of this mechanism lies in the gravity-hydraulic linkage principle: the top of the dual material bins 61 is a split design, including a cement slurry bin and a foaming glue bin 66. The foaming glue bin 66 is filled with polyurethane foam. The feed plate 62 is installed obliquely inside the dual material bins 61 at an angle of 30°. When the cement slurry is injected through the feed plate 62 by its own weight, it pushes the feed plate 62 down to press down the reset piston 63. The reset piston 63 uses a 304 stainless steel piston rod and is connected to a buffer spring 64 at the bottom. The injection force of the cement slurry compresses the buffer spring 64. At the same time, the reset piston 63 moves and presses the foaming glue bin 66, forcing the foaming glue to be quantitatively sprayed into the mixing bin 3 through the one-way valve 65 of model PP-R DN15. The proportioning principle is based on hydraulic pressure transmission. The effective area and stroke of the reset piston 63 are designed to accurately extrude 1.5L of foaming glue for every 10L of cement slurry injected, with an error of ≤2%. Zero energy consumption control is achieved by relying on the material's own weight and hydraulic linkage, without the need for external sensors.

[0031] The mixing chamber 3 is equipped with a mixing assembly 7, including a mixing rod 71. The mixing rod 71 is a hollow steel pipe with multiple one-way nozzles 72 of model FKM DN10 brass welded evenly on its outer wall. The mixing rod 71 is connected to a drive motor 73 of model YE3-100L-4 through a coupling. The water tank 75 is connected to the central water channel of the mixing rod 71 through a water supply pipe 74. During the mixing process, water is sprayed at multiple points through the one-way nozzles 72, directly covering the surface of the aggregate, improving the uniformity of water addition and preventing backflow.

[0032] Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 9 As shown below, see details:

[0033] In a preferred embodiment, the cover 41 of the scraper mechanism 4 is made of 304 stainless steel, with a diameter matching the opening of the mixing chamber 3, and is sealed with a sealing ring for dust prevention. The core of the drive assembly 42 is a GH28-750-30-S2-P type servo motor with a planetary reducer, and the output shaft is connected to the fixed rod 43 via a coupling. The fixed rod 43 is a hollow square steel, with displacement mechanisms 8 symmetrically installed on both sides. The slide rail 81 is an HGH20CA linear guide rail, and the pulley 82 is a V620ZZ V-groove bearing wheel to ensure precise horizontal movement. The hydraulic rod 84 is an HSG series engineering hydraulic cylinder, which is fixed to the base 1 by bolts through the fixed platform 85; the four sets of telescopic rods 44 are electric push rods of model DK-35~24V with a stroke of 150mm. The end of the rod is hinged to a scraping ring 45, which is composed of a polyurethane scraper and a spring steel support structure. When the servo motor drives the fixed rod 43 to rotate, the rack and gear fixed inside the scraping ring 45 mesh, forcing the scraping ring 45 to move in a spiral trajectory along the inner wall of the mixing chamber 3; the ratchet mechanism is integrated into the gear shaft end to prevent the scraper from sliding back when tilting to unload.

[0034] In a preferred embodiment, the slide rail 81 in the displacement mechanism 8 is a horizontally welded HGH15CA type linear guide rail to the surface of the fixed platform 85. The pulley 82 is a UC205 bearing wheel with a flange, which forms a sliding pair with the slide rail 81 by bolts. The rotating block 83 is a 45# steel forged hinged part, one end of which is connected to the flange of the pulley 82 by a pin, and the other end is connected to the piston rod end of the hydraulic rod 84 by a spherical bearing. The hydraulic rod 84 is an HSGL01 series engineering hydraulic cylinder, and the bottom end of the cylinder is fixed to the side of the fixed platform 85 by a hinge support.

[0035] The fixed platform 85 is welded into an L-shaped frame from Q235 steel plates, and the bottom is fastened to the base 1 by M16 bolts. When the hydraulic rod 84 extends or retracts, it pushes the rotating block 83 to drive the pulley 82 to move horizontally along the slide rail 81. At the same time, the vertical lifting and lowering of the scraper mechanism 4 is achieved through the lever action of the hinge point.

[0036] In a preferred embodiment, the feed plate 62 is welded to the inner wall of the double silo 61 at a 30° angle, and its inclined surface guides the cement slurry to flow to the feed port 31 under the action of gravity; the reset piston 63 is a 304 stainless steel piston, and the bottom is rigidly connected to a buffer spring 64 of model DIN2093-50×80×150, the pre-compression force of which is set to 200N; the limiting groove 9 is a 45# steel guide sleeve, which is fixed to the side wall of the double silo 61 by bolts; when the cement slurry is injected along the feed plate 62, the vertical component of its own weight pushes the reset piston 63 to move vertically downward along the limiting groove 9. At this time, the effective working area of ​​the piston and the pressure-bearing area of ​​the foaming slurry 66 are designed in a ratio of 6.67:1, so that 1.5L of foaming slurry is precisely squeezed out for every 10L of cement slurry injected.

[0037] In a preferred embodiment, an HGH25CA linear guide rail is installed at the bottom of the sliding plate 2, forming a sliding pair with the Q235 steel guide rail groove of the base 1; the rotating shaft 21 is forged from 45# steel, and both ends are connected to the mixing chamber 3 through UCP210 bearings with seats; the telescopic component 22 is an HSGL01-50 / 28-200 hydraulic cylinder, with a rack hinged to the end of its piston rod, which meshes with a gear fixed to the rotating shaft 21; when the hydraulic cylinder pushes the rack to move linearly, the drive gear drives the rotating shaft 21 to rotate, so that the mixing chamber 3 can achieve an inclination angle adjustment of 0°-60°; at the same time, the hydraulic rod 84 of model HSG-63 / 35-300 pushes the scraper mechanism 4 through the displacement mechanism 8, and its fixed rod 43 is linked to the side wall of the mixing chamber 3 through a pin, ensuring that the scraping ring 45 always maintains parallel contact with the inclined chamber wall.

[0038] In a preferred embodiment, the stirring rod 71 uses a Φ76×8mm seamless steel pipe as a hollow water channel, and 12 unidirectional nozzles 72 are welded at equal intervals on its outer wall; the drive motor 73 is a YE3-132M-4 type high-efficiency motor, which is fixed to the top of the mixing chamber 3 through a flange; the water tank 75 is a 304 stainless steel square box with a volume of 300L, which is connected to the central rotating shaft of the stirring rod 71 through a water supply pipe 74. When the drive motor 73 drives the stirring rod 71 to rotate at 60rpm, the water is distributed to each unidirectional nozzle 72 through the water distribution chamber of the central rotating shaft, forming a spray pressure of 0.3MPa under the action of centrifugal force, so as to achieve 360° coverage spraying of the aggregate surface.

[0039] In a preferred embodiment, the auxiliary support 10 is constructed from 50×50×5mm Q235 angle steel welded into a vertical frame, with its bottom fixed to the base 1 using M12 expansion bolts. The bottom flange of the dual material bins 61 of the adhesive spraying mechanism 6 is bolted to the floating platform at the top of the auxiliary support 10. The water supply pipe 74 is made of PU steel wire reinforced flexible hose, with its two ends connected to the water outlet of the water tank 75 and the water inlet of the stirring rod 71 respectively using stainless steel clamps. When the stirring chamber 3 moves horizontally along the base 1 via the sliding plate 2, the flexible water pipe bends and deforms due to its own flexibility. At the same time, the floating platform of the auxiliary support 10 compensates for installation deviations through guide columns, ensuring that the pipeline is stress-free and free from twisting. This design allows the adhesive spraying mechanism 6 to remain in a fixed position when the stirring chamber 3 is moved for cleaning or maintenance, avoiding wear on the seals caused by frequent disassembly and assembly. Combined with the telescopic structure of the dust cover 5, it enables the equipment to be operated in a modular manner, improving maintenance efficiency.

[0040] The working process of this utility model is as follows: First, during the material proportioning and mixing stage, the cement slurry is injected by its own weight through the 30° inclined feed plate 62, which pushes the reset piston 63 to compress the buffer spring 64 and move it down, triggering the one-way valve 65 in conjunction, so that the foaming adhesive in the foaming adhesive hopper 66 is quantitatively sprayed into the mixing hopper 3 at a ratio of 6.67:1 of cement slurry volume; at the same time, the water tank 75 sprays water from 12 one-way nozzles 72 through the water channel inside the mixing rod 71, which sprays water at multiple points under the action of centrifugal force, directly covering the surface of the aggregate.

[0041] Then, in the intelligent mixing stage, the drive motor 73 performs dry mixing at 60 rpm for 90 seconds to initially mix the aggregate and cementitious materials; in the wet mixing stage, the PLC controls the solenoid valve to inject water in three pulses, while the mixing rod 71 breaks up cement lumps.

[0042] Secondly, after the mixing is completed during the unloading and cleaning stage, the telescopic component 22 pushes the rack and pinion drive gear mechanism to tilt the mixing chamber 3 around the rotating shaft 21 by 60°. At the same time, the hydraulic rod 84 pushes the scraping ring 45 to rotate and scrape the material against the chamber wall. The ratchet mechanism locks the rotating shaft to prevent slippage. After unloading, the sliding plate 2 returns to its horizontal position and the inner cavity of the mixing chamber 3 is rinsed. The wastewater is centrally treated by the recycling system. The above is the working principle of this self-proportioning lightweight concrete residue prevention and mixing device.

Claims

1. A self-proportioning lightweight concrete residue prevention and mixing device, comprising a base (1), characterized in that: A sliding plate (2) is provided on the top of the base (1). A rotating shaft (21) is provided on one side of the sliding plate (2). A mixing chamber (3) is connected to one side of the rotating shaft (21). A scraper mechanism (4) is provided on one side of the mixing chamber (3). A feed inlet (31) is provided on the other side of the mixing chamber (3). A dust cover (5) is provided on one side of the feed inlet (31). A glue spraying mechanism (6) is provided on one side of the dust cover (5). The glue spraying mechanism (6) includes a double hopper (61), a feed plate (62), a reset piston (63), and a buffer. The feed plate (62) is connected to a reset piston (63) at the bottom. A one-way valve (65) is provided on one side of the reset piston (63). A foaming hopper (66) is provided on one side of the one-way valve (65). The other side of the one-way valve (65) is connected to the mixing chamber (3). A mixing assembly (7) is provided inside the mixing chamber (3). The mixing assembly (7) includes a mixing rod (71). A one-way nozzle (72) is provided on the outer wall of the mixing rod (71).

2. The self-proportioning lightweight concrete residue prevention and mixing device according to claim 1, characterized in that: The scraper mechanism (4) includes a bin cover (41), a drive assembly (42), a fixed rod (43), a telescopic rod (44), and a scraping ring (45). The drive assembly (42) is located at the center of the bin cover (41). A fixed rod (43) is located on one side of the drive assembly (42). Displacement mechanisms (8) are located on both sides of the fixed rod (43). A telescopic rod (44) is connected to the other side of the drive assembly (42). There are four sets of telescopic rods (44), and the four sets of telescopic rods (44) are evenly arranged along the circumference of the bin cover (41). A scraping ring (45) is located on one side of the telescopic rod (44).

3. The self-proportioning lightweight concrete residue prevention and mixing device according to claim 2, characterized in that: The displacement mechanism (8) includes a slide rail (81), a pulley (82), a rotating block (83), a hydraulic rod (84), and a fixed platform (85). The pulley (82) is connected to the fixed rod (43) through the slide rail (81). A rotating block (83) is provided on one side of the pulley (82), and a hydraulic rod (84) is provided on one side of the rotating block (83). A fixed platform (85) is provided at one end of the hydraulic rod (84). The scraper mechanism (4) can move back and forth along the horizontal direction of the fixed platform (85) through the slide rail (81), and the pulley (82) can move up and down along the vertical direction of the fixed platform (85) through the hydraulic rod (84).

4. The self-proportioning lightweight concrete residue prevention and mixing device according to claim 1, characterized in that: The feed plate (62) is obliquely arranged inside the double hopper (61). A buffer spring (64) is provided on one side of the reset piston (63). A limit groove (9) is provided on one side of the reset piston (63). Cement slurry enters the feed port (31) through the feed plate (62). The cement slurry pushes the reset piston (63) to move along the vertical direction of the limit groove (9) through the feed plate (62), thereby triggering the one-way valve (65) to allow the foamed adhesive in the foamed adhesive hopper (66) to enter the mixing hopper (3).

5. The self-proportioning lightweight concrete residue prevention and mixing device according to claim 3, characterized in that: The sliding plate (2) is slidably connected to the base (1). A telescopic component (22) is provided on one side of the rotating shaft (21). The telescopic component (22) enables the mixing chamber (3) to rotate along the circumferential direction of the rotating shaft (21). The scraper mechanism (4) is made to rotate synchronously with the mixing chamber (3) through the hydraulic rod (84). The chamber cover (41) is away from the mixing chamber (3) through the slide rail (81).

6. The self-proportioning lightweight concrete residue prevention and mixing device according to claim 1, characterized in that: The stirring assembly (7) includes a stirring rod (71), a one-way nozzle (72), a drive motor (73), a water supply pipe (74), and a water tank (75). The drive motor (73) is provided on one side of the stirring rod (71), and the water supply pipe (74) is provided on both sides of the drive motor (73). The water tank (75) is connected to one side of the water supply pipe (74). The water tank (75) is connected to the center of the stirring rod (71) through the water supply pipe (74), so that the water in the water tank (75) enters the stirring chamber (3) through the one-way nozzle (72).

7. The self-proportioning lightweight concrete residue prevention and mixing device according to claim 6, characterized in that: An auxiliary support (10) is provided on one side of the glue spraying mechanism (6). The water supply pipe (74) is a soft water pipe. When the mixing chamber (3) moves horizontally along the base (1) via the sliding plate (2), the glue spraying mechanism (6) is fixed in its original position by the auxiliary support (10).

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