An automatic concrete mixing and discharging device

Abstract

This utility model provides an automatic concrete mixing and discharging device, comprising: a feeding device for conveying materials; a mixing device connected to the feeding device, including a mixing silo and a mixing assembly, the mixing assembly being used to mix the materials in the mixing silo; and a discharging device movably disposed at the bottom of the mixing silo, the discharging device including a mounting frame, a storage silo disposed above the mounting frame and below the mixing silo, the storage silo being funnel-shaped, and a discharging assembly disposed below the storage silo, the discharging assembly including a discharging hopper disposed below the storage silo, a second conveying auger disposed within the discharging hopper, and a third motor disposed at one end of the discharging hopper, the discharging hopper having a discharge port at the end away from the third motor. This discharging device, including the second conveying auger, can not only accurately output the amount of cement but also prevent the cement from agglomerating.

Description

Technical Field

[0001] This utility model relates to an automatic concrete mixing and discharging device. Background Technology

[0002] Concrete mixing equipment is a specialized machine used to uniformly mix cement, aggregates (sand, stone), water, and admixtures in a certain proportion to produce concrete. It is widely used in construction, bridges, roads, water conservancy and other projects. However, the concrete required for 3D printing has much higher composite requirements than traditional concrete. Therefore, general concrete mixing equipment is usually not suitable. Existing concrete mixing equipment not only cannot effectively mix the concrete thoroughly, but also easily leads to problems such as concrete clumping. When discharging, existing concrete equipment usually uses only one container to hold the cement. The disadvantages of this are that the cement is easy to solidify, and the cement volume is large, making it inconvenient to move the container. In view of the above problems, this utility model designs an automatic concrete mixing and discharging device. Utility Model Content

[0003] This invention provides an automatic concrete mixing and discharging device, which can effectively solve the above-mentioned problems.

[0004] This utility model is implemented as follows: An automatic concrete mixing and discharging device includes: Feeding device, used to convey materials; A mixing device connected to a feeding device includes a mixing chamber and a stirring assembly, wherein the stirring assembly is used to stir the material in the mixing chamber; A discharge device is movably installed at the bottom of the mixing silo for discharging materials. The discharge device includes a mounting frame, a storage silo is installed above the mounting frame and below the mixing silo, and the storage silo is funnel-shaped. A discharge assembly is installed below the storage silo, and the discharge assembly includes a discharge bin installed below the storage silo. A second conveying auger is installed inside the discharge bin, and a third motor is installed at one end of the discharge bin. A discharge port is installed at the end of the discharge bin away from the third motor.

[0005] The beneficial effects of this utility model are as follows: This utility model uses a discharge device that is movably installed at the bottom of the mixing silo. The discharge device includes a mounting frame, a storage silo is installed above the mounting frame, and the storage silo is located below the mixing silo. The storage silo is funnel-shaped, and a discharge assembly is installed below the storage silo. The discharge assembly includes a discharge hopper located below the storage silo. A second conveying auger is installed inside the discharge hopper, and a third motor is installed at one end of the discharge hopper. A movable discharge port is installed at the end of the discharge hopper away from the third motor, which facilitates the transfer of cement. The discharge device, including the second conveying auger, can not only accurately output the amount of cement, but also prevent the cement from agglomerating into lumps. Attached Figure Description

[0006] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0007] Figure 1 This is a structural schematic diagram of the automatic concrete batching and mixing equipment of this utility model. Figure 1 .

[0008] Figure 2 This is a structural schematic diagram of the automatic concrete batching and mixing equipment of this utility model. Figure 2 .

[0009] Figure 3 This is a schematic diagram of the first feeding device provided by the automatic concrete batching and mixing equipment of this utility model.

[0010] Figure 4 This is a cross-sectional structural diagram of the first feeding device provided by the automatic concrete batching and mixing equipment of this utility model.

[0011] Figure 5 yes Figure 4 A magnified structural diagram of point A in the middle.

[0012] Figure 6 This is a schematic diagram of the mixing device provided by the automatic concrete batching and mixing equipment of this utility model.

[0013] Figure 7 This is a schematic diagram of the mixing component structure provided by the automatic concrete batching and mixing equipment of this utility model.

[0014] Figure 8 This is a schematic diagram of the discharge device provided by the automatic concrete batching and mixing equipment of this utility model.

[0015] The attached diagram is labeled as follows: 10. First feeding device; 11. First feeding bin; 111. Feed inlet; 112. Conveying trough; 12. First conveying assembly; 121. Screwdriver housing; 122. First conveying screw; 123. First motor; 13. Vibrator; 14. Dust collection assembly; 141. Dust collection bin; 142. Third motor; 143. Fan blade; 15. Reinforcing assembly; 151. First fastener; 152. Second fastener; 153. Reinforcing plate; 154. Damping shock absorber box; 1541. Receiving groove; 1542. Bolt hole; 1543. Damping liquid; 1544. Damping particles; 20. Second feeding device; 21. Second feeding hopper; 22. Second conveying assembly; 23. Weighing assembly; 231. Weighing module; 30. Mixing device; 31. Mixing bin; 32. Agitator assembly; 321. Second motor; 322. Agitator paddle; 3221. Agitator shaft; 3222. First bushing; 3223. Second bushing; 3224. Connecting rod; 3225. Spiral blade; 33. Cleaning assembly; 331. Connecting fitting; 332. Water inlet pipe; 34. Bin closing assembly; 341. Connecting shaft; 342. Closing plate; 343. Connecting rod; 344. Drive cylinder; 40. Third feeding device; 41. Third feeding hopper; 42. Third conveying assembly; 50. Discharge device; 51. Mounting frame; 52. Storage bin; 53. Discharge assembly; 531. Discharge bin; 532. Second conveying auger; 533. Fourth motor; 60. Control unit. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0017] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0018] Reference Figures 1-2 As shown, an automatic concrete batching and mixing device includes: The first feeding device 10 includes a first feeding hopper 11, an inlet 111 is provided above the first feeding hopper 11, and a first conveying assembly 12 is provided below the first feeding hopper 11. The first conveying assembly 12 is used to convey cement powder. The second feeding device 20 includes a second feeding hopper 21 connected to the first conveying component 12, a second conveying component 22 disposed above the second feeding hopper 21 for conveying sand, and a weighing component 23 disposed below the second feeding hopper 21 for weighing the material. The mixing device 30 includes a mixing chamber 31 disposed below the second feeding chamber 21 and a stirring assembly 32, wherein the stirring assembly 32 is used to stir the material in the mixing chamber 31; The third feeding device 40 includes a third feeding silo 41 connected to the mixing silo 31. The third feeding silo 41 is connected to the mixing silo 31 via a third conveying assembly 42. The third conveying assembly 42 is used to convey additives to the mixing silo 31. The discharge device 50 is movably installed at the bottom of the mixing hopper 31 for discharging materials.

[0019] It also includes a control unit 60, which is used to perform program control on the entire automatic concrete batching and mixing equipment.

[0020] Reference Figures 3-5As shown, in this embodiment, the first feeding hopper 11 is funnel-shaped, and a vibrator 13 is provided on the outer wall of the first feeding hopper 11. The vibrator 13 is a pneumatic vibrating hammer. Because cement particles are fine and have a large specific surface area, they are extremely easy to absorb moisture, forming "cement cakes" inside the auger, which adhere to the blades or bearings, causing the auger to jam. Therefore, a vibrator 13 is needed on the outer wall of the first feeding hopper 11 to prevent cement powder from sticking together and causing material accumulation and blockage. A conveying trough 112 is opened on one side wall of the first feeding hopper 11. The first conveying assembly 12 includes an auger housing 121 that communicates with the conveying trough 112 and is inclined. A first conveying auger 122 is provided inside the auger housing 121. The first conveying auger 122 is a rod-type auger. In other embodiments, to prevent material blockage, the first conveying auger 122 can be a rodless auger. A first motor 123 connected to the first conveying auger 122 is provided outside the auger housing 121. The other end of the auger housing 121 is connected to the second feed hopper 21. Since a vibrator 13 is provided at the bottom of the first feed hopper 11, the vibration generated by the vibrator 13, plus the vibration generated when the first motor 123 starts, and the first motor 123 is in a suspended state and has a large weight, long-term use may cause cracks to appear at the connection between the auger housing 121 and the feed trough 112. Therefore, this utility model provides a design at the connection between the auger housing 121 and the feed trough 112. A reinforcing component 15 is provided, comprising a first fastener 151 disposed on the outer periphery of the feed trough 112, and a second fastener 152 disposed on the outer periphery of the connection opening between the auger housing 121 and the feed trough 112. Both the first fastener 151 and the second fastener 152 have an edge at their joint, and the edge has several bolt holes. The reinforcing component 15 also includes a hollow reinforcing plate 153, on the outer side of which several mounting grooves 1531 corresponding to the bolt holes are provided. A corresponding damping shock absorber box 154 is detachably mounted on the mounting groove 1531. A receiving groove 1541 is formed in the middle of the damping shock absorber box 154, and the damping shock absorber box 154 is perpendicular to the receiving groove. A bolt hole 1542 is provided in the groove 1541 in the opening direction. The damping and shock absorption box 154 is provided with damping fluid 1543 and damping particles 1544. The installation steps are as follows: place the first fastener 151 and the second fastener 152 in the reinforcing plate 153, press the edges of the first fastener 151 and the second fastener 152 against each other so that the bolt holes on the edges of the first fastener 151 and the second fastener 152 are aligned, and place the damping and shock absorption box 154 in the mounting groove 1531 so that the edges of the first fastener 151 and the second fastener 152 are set in the receiving groove 1541. The damping and shock absorption box 154 plays a clamping and fixing role for the first fastener 151 and the second fastener 152.The bolt holes 1542 on the damping shock absorber box 154 are aligned with the bolt holes on the first fastener 151 and the second fastener 152, and then locked in place using a bolt and nut assembly. This completes the installation of the reinforcing component 15. First, the first fastener 151 and the second fastener 152 are laterally fixed by the reinforcing plate 153. Then, the first fastener 151 and 152 are longitudinally clamped and fixed by the damping shock absorber box 154. Finally, the fixing is reinforced by bolt tightening. This strengthens the installation and fixing of the first fastener 151 and the second fastener 152, preventing cracks from appearing at the connection between the auger housing 121 and the feed trough 112 due to the vibration generated by the vibrator 13, the vibration generated when the first motor 123 starts, and the weight of the first motor 123. Furthermore, by setting up the damping and shock absorption box 154, the vibration of the auger housing 121 can be reduced to a certain extent, preventing the vibration of the auger housing 121 from affecting the measurement accuracy of the weighing component 23 during the conveying of cement powder, thus avoiding excessive or insufficient weight of the conveyed cement powder and consequently affecting the quality of the concrete.

[0021] Reference Figures 3-4 As shown, a dust collection assembly 14 is installed above the first feeding hopper 11. The dust collection assembly 14 includes a dust collection hopper 141, and a third motor 142 is installed above the dust collection hopper 141. The third motor 142 drives a fan blade 143 installed inside the dust collection hopper 141. The dust collection hopper 141 is connected to a dust collection container (not shown in the figure). By controlling the fan blade 143 through the third motor 142, cement dust above the first feeding hopper 11 is sucked into the dust collection container. This not only effectively controls environmental issues during equipment mixing and stirring but also allows for the recycling of excess cement dust.

[0022] Reference Figures 1-2 As shown, the weighing assembly 23 includes several weighing modules 231 disposed at the bottom of the second feeding hopper 21. In this embodiment, there are 3 to 5 weighing modules 231 arranged in an equidistant circular array below the second feeding hopper 21. Each weighing module 231 can not only measure the weight of the material inside the second feeding hopper 21, but also detect the levelness of the second feeding hopper 21. The device uses one of the weighing modules 231 as a reference, and the detected weight of the reference weighing module 231 is M. i During the feeding process, if the value displayed by other weighing modules 231 exceeds the first threshold A, an alarm warning state is displayed, where the first threshold A = M. i ±(5~8)%M i In this embodiment, the first threshold A = M i ±5%M i This indicates that the mixing silo 311 is in a horizontal state.

[0023] Reference Figures 6-7 As shown, the stirring assembly 32 includes a second motor 321 disposed on the side wall of the mixing chamber 31 and a stirring paddle 322 disposed inside the mixing chamber 31 and connected to the second motor 321. The stirring paddle 322 can fully stir the materials. In this embodiment, the stirring paddle 322 is a two-section connected stirring paddle. The stirring paddle 322 includes a stirring shaft 3221. The stirring shaft 3221 has two sets of symmetrically arranged first mounting holes in the middle and two sets of symmetrically arranged second mounting holes at both ends. A first bushing 3222 is disposed on the first mounting hole and a second bushing 3223 is disposed on the second mounting hole. A connecting rod is welded to both the first bushing 3222 and the second bushing 3223. 3224, a spiral blade 3225 is provided between the connecting rods 3224 of the adjacent first bushing 3222 and second bushing 3223. The two spiral blades 3225 are arranged in opposite spirals. By providing detachable first bushings 3222 and second bushings 3223 on the stirring shaft 3221, the stirring paddle 322 can be easily disassembled and cleaned after long-term use when dirt and grime accumulate inside. When the stirring paddle 322 is started to stir, the connecting rods 3224 can pound the material, and the spiral blades 3225 can agitate the material. The two spiral blades 3225 are arranged in opposite spirals, which can stir the material towards the center, so that there is an impact force between the two materials, further enhancing the stirring effect.

[0024] Reference Figure 6 As shown, the mixing device 30 further includes a cleaning component 33. The cleaning component 33 includes a connecting pipe 331 disposed above the mixing chamber 31, the connecting pipe 331 being connected to an external water source. The mixing chamber 31 has several water inlet pipes 332 communicating with the connecting pipe 331, and several water outlet holes on the water inlet pipes 332. After mixing is complete, the connecting pipe 331 connects to the external water source, and water is introduced into the mixing chamber 31 through the water outlet holes for cleaning. Furthermore, in other embodiments, where concrete preparation requires water mixing, the cleaning component 33 can also provide a water source.

[0025] Reference Figure 6As shown, the mixing device 30 also includes a hopper closure assembly 34. The hopper closure assembly 34 includes a connecting shaft 341 disposed at the bottom of the mixing hopper 31. A discharge chute is disposed at the bottom of the mixing hopper 31. One end of the connecting shaft 341 is connected to a closing plate 342 corresponding to the discharge chute. A connecting rod 343 is disposed in the middle of the connecting shaft 341. The connecting rod 343 is connected to a driving cylinder 344 disposed on the side wall of the mixing hopper 31. The driving cylinder 344 controls the connecting shaft 341 to rotate, thereby driving the closing plate 342 to open / close the discharge chute. During the material mixing process, the driving cylinder 344 controls the closing plate 342 to close the discharge chute. When the mixing is completed, the driving cylinder 344 controls the closing plate to open the discharge chute to complete the discharge.

[0026] Reference Figure 8 As shown, the discharge device 50 includes a mounting frame 51, with a storage hopper 52 positioned above the mounting frame 51. The storage hopper 52 is located below the mixing hopper 31 and is funnel-shaped. A discharge assembly 53 is positioned below the storage hopper 52. The discharge assembly 53 includes a discharge chamber 531 located below the storage hopper 52. A second conveying auger 532 is installed inside the discharge chamber 531, and a fourth motor 533 is located at one end of the discharge chamber 531. A discharge port is located at the end of the discharge chamber 531 away from the fourth motor 533. The movable discharge device 50 allows for more convenient material discharge.

[0027] This utility model also includes a control method for an automatic concrete batching and mixing equipment, comprising the following steps: S1: The weight of cement powder required for the prepared concrete is set to M1, and the weight of concrete sand is set to M2. S2: Control the first conveying component 12 to convey cement powder into the second feeding hopper 21, and perform the first weighing by the weighing component 23. The weight of the first weighing is m1. S3: Determine whether the weight m1 of the first weighing is within the range of M1±2%M1. If yes, proceed to step S4; otherwise, alarm and stop the machine. S4: Control the second conveying component 22 to convey sand into the second feeding bin 21, and perform a second weighing through the weighing component 23. The weight of the second weighing is m2. S5: Determine whether the weight m2 of the second weighing is within the range of (M1+M2)±1%(M1+M2). If yes, proceed to step S6; otherwise, alarm and stop the machine. S6: Transport the material in the second feed hopper 21 to the mixing hopper 31, and control the third conveying component 42 to deliver the additive to the mixing hopper 31. S7: Control the stirring component 32 to stir the materials in the mixing chamber 31; S8: After mixing is complete, the material in the mixing hopper 31 is conveyed to the discharge device 50 to complete the discharge.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic concrete mixing and discharging device, characterized in that, include: Feeding device, used to convey materials; The mixing device (30) connected to the feeding device includes a mixing chamber (31) and a stirring assembly (32), wherein the stirring assembly (32) is used to stir the material in the mixing chamber (31); The discharge device (50) is movably disposed at the bottom of the mixing silo (31) for discharging materials. The discharge device (50) includes a mounting frame (51). A storage silo (52) is disposed above the mounting frame (51). The storage silo (52) is disposed below the mixing silo (31). The storage silo (52) is funnel-shaped. A discharge assembly (53) is disposed below the storage silo (52). The discharge assembly (53) includes a discharge hopper (531) disposed below the storage silo (52). A second conveying auger (532) is disposed inside the discharge hopper (531). A third motor (142) is disposed at one end of the discharge hopper (531). A discharge port is disposed at the end of the discharge hopper (531) away from the third motor (142).

2. The automatic concrete mixing and discharging device according to claim 1, characterized in that, The feeding device includes: The first feeding device (10) includes a first feeding hopper (11), a feeding port (111) is provided above the first feeding hopper (11), and a first conveying assembly (12) is provided below the first feeding hopper (11). The first conveying assembly (12) is used to convey cement powder. The second feeding device (20) includes a second feeding hopper (21) connected to the first conveying component (12), a second conveying component (22) is provided above the second feeding hopper (21) for conveying sand, a weighing component (23) is provided below the second feeding hopper (21) for weighing the material, and a mixing device (30) is provided below the second feeding hopper (21). The third feeding device (40) includes a third feeding silo (41) connected to a mixing silo (31), the third feeding silo (41) being connected to the mixing silo (31) via a third conveying assembly (42), the third conveying assembly (42) being used to convey additives to the mixing silo (31).

3. The automatic concrete mixing and discharging device according to claim 1, characterized in that, The stirring assembly (32) includes a second motor (321) disposed on the side wall of the mixing chamber (31) and a stirring paddle (322) disposed in the mixing chamber (31) and connected to the second motor (321). The stirring paddle (322) includes a stirring shaft (3221). The stirring shaft (3221) has two sets of symmetrically arranged first mounting holes in the middle and two sets of symmetrically arranged second mounting holes at both ends. A first bushing (3222) is disposed on the first mounting hole and a second bushing (3223) is disposed on the second mounting hole. A connecting rod (3224) is welded on both the first bushing (3222) and the second bushing (3223). A spiral blade (3225) is disposed between the connecting rods (3224) of adjacent first bushings (3222) and second bushings (3223). The two spiral blades (3225) are arranged in opposite spiral directions.

4. The automatic concrete mixing and discharging device according to claim 3, characterized in that, The mixing device (30) further includes a cleaning component (33), which includes a connecting pipe (331) disposed above the mixing chamber (31). The connecting pipe (331) is connected to an external water source. The mixing chamber (31) is provided with a plurality of water inlet pipes (332) communicating with the connecting pipes (331). The water inlet pipes (332) are provided with a plurality of water outlet holes.

5. The automatic concrete mixing and discharging device according to claim 4, characterized in that, The mixing device (30) further includes a hopper closure assembly (34), which includes a connecting shaft (341) disposed at the bottom of the mixing hopper (31). A discharge trough is disposed at the bottom of the mixing hopper (31). One end of the connecting shaft (341) is connected to a closing plate (342) corresponding to the discharge trough. A connecting rod (343) is disposed in the middle of the connecting shaft (341). The connecting rod (343) is connected to a driving cylinder (344) disposed on the side wall of the mixing hopper (31). The driving cylinder (344) controls the connecting shaft (341) to rotate, thereby driving the closing plate (342) to open / close the discharge trough.

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