Lightweight foamed concrete pouring and conveying device

Abstract

The present application relates to the field of construction tools, especially to a light foam concrete pouring and conveying equipment, which comprises a base, a horizontal discharger arranged on the top of the base, an upper cover plate arranged on the upper surface of the discharger, a feeding pipe arranged on one side of the upper cover plate, a conduit and a buffer, the buffer is connected with a feeding hopper, the feeding hopper and the bottom pipe form a groove, a rotating feeding rod is arranged in the buffer and the bottom pipe, the feeding rod is connected with the main shaft of a driving motor installed outside the feeding hopper, a synchronous motor is arranged to drive the middle pipe to rotate, the synchronous motor is electrically connected with the main plate of the driving motor, the long-distance conveying capacity of the foam concrete is greatly reduced, the defoaming during starting and stopping is reduced, the pre-feeding section and the conveying section of the feeding rod are designed in sections, the radial limiting effect of the buffer is combined, the effective pushing torque of the feeding rod is concentrated in the axial conveying direction, the radial overflow of the material is inhibited, and the damage of the radial shearing to the foam is reduced.

Description

Technical Field

[0001] This invention relates to a lightweight foamed concrete pouring and conveying equipment, belonging to the field of construction tools. Background Technology

[0002] Lightweight foamed concrete is a porous lightweight material made from cement, foaming agent, and water as core raw materials, mixed with admixtures such as fly ash and slag powder, and produced through foaming, mixing, pouring, and curing.

[0003] During construction, the mixture is usually mixed on-site and then transported through pipelines. To avoid defoaming, the pipeline length is limited, so secondary transportation is required for long-distance transportation. When pouring at different small locations, it is necessary to start and stop frequently. During the start and stop process, the pushing mechanism will excessively shear the foamed concrete, which will lead to defoaming and affect the pouring quality.

[0004] The core requirements for lightweight foamed concrete pouring tools are low shear, prevention of foam breakage, and uniform material distribution. Therefore, this application aims to design a device that can reduce defoaming and stably deliver foamed concrete for pouring. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a lightweight foamed concrete pouring and conveying device to solve the above problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a lightweight foamed concrete pouring and conveying device, the structure of which includes: a base, a horizontally placed discharge device on the top of the base, an upper cover plate installed on the upper surface of the discharge device, and a feed pipe provided on one side of the upper cover plate, the discharge device including a guide pipe and a buffer, the buffer being connected to a feed hopper, the feed hopper and the bottom pipe forming a trough, a rotating feeding rod being provided inside the buffer and the bottom pipe, the feeding rod being connected to the main shaft of a drive motor installed outside the feed hopper, the buffer including a middle pipe and a synchronous motor for driving the middle pipe to rotate, the synchronous motor being electrically connected to the main board of the drive motor.

[0007] Preferably, the buffer further includes a first limiting ring and a second limiting ring, with a positioning rod between the first limiting ring and the second limiting ring for limiting. The middle tube is installed between the first limiting ring and the second limiting ring, and the middle tube is rotatably connected to the first limiting ring and the second limiting ring. The synchronous motor is installed on the outer ring of the first limiting ring and meshes with the gear ring of the middle tube.

[0008] Preferably, a guide plate is provided on the side of the feed hopper connected to the guide tube, and the guide plate and the inner surface of the middle tube are nested together.

[0009] Preferably, the middle tube includes a cylindrical body, the surface of which is provided with a gear ring that meshes with a synchronous motor, and limiting sleeves extending outward from both sides of the cylindrical body. The cylindrical body is nested inside the first limiting ring and the second limiting ring through the limiting sleeves.

[0010] Preferably, the surface of the limiting sleeve is provided with a sealing ring, which cooperates with the internal grooves of the first limiting ring and the second limiting ring.

[0011] Preferably, the gear ring is provided with a groove, which is nested with the second limiting ring.

[0012] Preferably, the guide plate includes a housing, and a limiting ring is provided on the side of the housing opposite to the limiting sleeve. The limiting ring extends to the inner wall of the limiting sleeve, and a flow divider is provided inside the housing, which communicates with the flow guide port at the top of the limiting ring.

[0013] Preferably, the surface of the housing mounting limiting ring is provided with a busbar.

[0014] Preferably, the second limiting ring is provided with a positioning frame that limits the position of the feed rod spindle.

[0015] Preferably, the drive motor and the synchronous motor start simultaneously, and the synchronous motor decelerates until it stops after 0-10 seconds.

[0016] This invention provides a lightweight foamed concrete pouring and conveying equipment, which has the following effects: it improves the long-distance conveying capacity of lightweight foamed concrete and significantly reduces defoaming during start-up and shutdown. Through the segmented design of the pre-feeding section and conveying section of the feeding rod, combined with the radial limiting effect of the buffer, the effective pushing torque of the feeding rod is concentrated in the axial conveying direction, which suppresses radial overflow of materials and reduces the damage of radial shear to the foam.

[0017] With the coordinated speed regulation structure of the central tube and synchronous motor, the synchronous motor drives the central tube and the feeding rod to rotate synchronously during startup, avoiding the generation of high-intensity shear force by the relative motion between the two at the moment of startup; subsequently, the synchronous motor slowly decelerates to form a speed difference, smoothly pushing the material to be conveyed, fundamentally solving the pain point of easy foam breakage during the start-up and shutdown process of traditional equipment, and ensuring the stability of the pore structure of foam concrete after long-distance transportation. Attached Figure Description

[0018] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the structure of a lightweight foamed concrete pouring and conveying device according to the present invention.

[0020] Figure 2This is a schematic diagram of the structure of the discharge device of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of the buffer of the present invention.

[0022] Figure 4 This is a schematic diagram of the tube structure in this invention.

[0023] Figure 5 This is a schematic diagram of the structure of the guide plate of the present invention.

[0024] Figure 6 This is a cross-sectional view of the discharge device of the present invention.

[0025] In the picture:

[0026] 1. Discharge device; 2. Top cover plate; 3. Feed pipe; 4. Drive motor; 5. Base;

[0027] 11. Conduit; 12. Buffer; 13. Feed hopper; 14. Feed rod; 15. Bottom pipe; 16. Guide plate;

[0028] 121. Central tube; 122. Synchronous motor; 123. First limit ring; 124. Positioning rod; 125. Second limit ring; 126. Positioning frame;

[0029] 161. Busbar; 162. Limiting ring; 163. Flow guide; 164. Flow divider; 165. Housing;

[0030] 211. Cylinder body; 212. Gear ring; 213. Slot; 214. Limiting sleeve; 215. Sealing ring. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention 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 the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, 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 invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In existing construction processes, mixing is typically done on-site, followed by pipeline transportation. However, due to the limited pipeline length to prevent defoaming, secondary transportation via auxiliary devices is necessary for long-distance transport. Frequent start-stop operations are required when pouring at different small locations. During these operations, the pushing mechanism excessively shears the foamed concrete, leading to defoaming and affecting the pouring quality. Therefore, to address these issues, this paper proposes the following technical solution:

[0034] Please see Figures 1 to 6 This invention provides a technical solution for a lightweight foamed concrete pouring and conveying equipment: its structure includes a base 5, a horizontally placed discharge device 1 on the top of the base 5, an upper cover plate 2 installed on the upper surface of the discharge device 1, and a feed pipe 3 on one side of the upper cover plate 2. The discharge device 1 includes a conduit 11 and a buffer 12. The buffer 12 is connected to a feed hopper 13. The feed hopper 13 and the bottom pipe 15 form a trough. A rotating feeding rod 14 is provided inside the buffer 12 and the bottom pipe 15. The feeding rod 14 is connected to the main shaft of a drive motor 4 installed outside the feed hopper 13. The buffer 12 includes a middle pipe 121 and a synchronous motor 122 that drives the middle pipe 121 to rotate. The synchronous motor 122 is electrically connected to the main board of the drive motor 4.

[0035] When in use, the main structure of this device includes a discharge device 1, which is supported by a base 5 for easy outdoor installation. A top cover 2 is provided on the top of the discharge device 1, which can expand the capacity of the discharge device 1. A feed pipe 3 is used for feeding material, and the feed pipe 3 connects the top cover 2 to the cavity of the discharge device 1. This device can improve the ability to transport lightweight foamed concrete over long distances and reduce the defoaming of the foam.

[0036] The discharge device 1 is equipped with a conduit 11, which is connected to a pipe and a buffer 12. The buffer 12 is used for buffering. The buffer 12 is installed on one side of the cavity formed by the feed hopper 13 and the bottom pipe 15. The bottom pipe 15 is equipped with a feeding rod 14, which is connected to the drive motor 4. When the drive motor 4 drives the feeding rod 14 to rotate, it conveys the material inside the feed hopper 13.

[0037] Because the feeding rod 14 will be frequently started during the feeding process, the feeding rod 14 and the foamed concrete will change from a relatively static state to a state of rapid rotation, which will cause excessive shearing of the foamed concrete and thus lead to defoaming.

[0038] To address this, the device is optimized by dividing the feeding rod 14 into a pre-feeding section and a conveying section. The pre-feeding section is located within the cavity of the feed hopper 13 and the bottom pipe 15. The bottom pipe 15 is a semi-circular arc groove. During the rotation of the feeding rod 14, the concrete is slowly pushed. When it reaches the buffer 12, the radial fit between the feeding rod 14 and the buffer 12 continuously improves, and the radial overflow of the concrete is gradually suppressed. The effective pushing torque of the feeding rod 14 is more concentrated on the axial direction.

[0039] However, the shear force at the buffer 12 is large during rapid start-up, which can easily cause defoaming. Therefore, the central tube 121 is set for adjustment. Specifically, the central tube 121 is driven by the synchronous motor 122 and starts synchronously when the feeding rod 14 starts. When the central tube 121 rotates, it is in a synchronous state with the feeding rod 14. The concrete swings together in the central tube 121 and the feeding rod 14. After a certain period of time, the synchronous motor 122 slowly decelerates, and the friction between the concrete and the inner wall of the central tube 121 is restored. Then, when the feeding rod 14 rotates, it can push the foamed concrete to move.

[0040] The middle tube 121 is installed between the first limiting ring 123 and the second limiting ring 125. The synchronous motor 122 is installed on the housing surface of the first limiting ring 123. The first limiting ring 123 and the second limiting ring 125 are fixed and limited by the positioning rod 124. The positioning frame 126 for fixing the main shaft of the feeding rod 14 is provided inside the second limiting ring 125. The structure of the middle tube 121 includes a cylinder 211. Limiting sleeves 214 are provided on both sides of the cylinder 211. The limiting sleeves 214 extend into the interior of the second limiting ring 125 and the interior of the first limiting ring 123. In order to prevent the cylinder 211 from being misaligned during rotation, a sealing ring 215 is provided on the surface of the limiting sleeve 214 for limiting. A gear ring 212 that meshes with the external gear of the synchronous motor 122 is also provided on the surface of the cylinder 211.

[0041] A slot 213 is also provided on the side of the cylinder 211. The slot 213 engages with the second limiting ring 125 to further improve the sealing performance.

[0042] At the feed inlet of hopper 13, the side opposite to buffer 12 is prone to being soaked by foamed concrete, which is most likely to cause jamming. The main reason is that the gap is opposite to the direction of foamed concrete flow, and it is easy to enter under the action of mechanical extrusion.

[0043] This device features a guide plate 16 nested on the opposite side of the buffer 12, forming an integral structure with the inner wall of the feed hopper 13. A limiting ring 162, opposite to the buffer 12, is provided on the side of the shell 165 of the guide plate 16. The limiting ring 162 is nested in the limiting sleeve 214 of the cylinder 211, guiding the concrete to flow through the inner wall of the cylinder 211. At the same time, a converging ring 161 is provided at the limiting ring 162, which cooperates with the top guide port 163. The guide port 163 is used to guide the water flow of the diverter 164 installed inside the shell 165. During the conveying process, the gaps can be blocked by seepage, and real-time backflushing can prevent blockage.

[0044] This device is used in the following manner:

[0045] The feed pipe 3 and the discharge device 1 are connected to the feed pipe and discharge pipe respectively. During operation, the mixed foamed concrete is transported through the feed pipe 3 into the cavity of the upper cover plate 2 and the feed hopper 13.

[0046] When the drive motor 4 is started, the synchronous motor 122 starts synchronously. The feeding rod 14 and the central tube 121 rotate synchronously. After the synchronous motor 122 starts, it begins to decelerate, forming a speed difference with the central tube 121. The material is pumped out from the guide tube 11 under the push of the feeding rod 14.

[0047] When the flow is accelerated, the synchronous motor 122 drives the gear ring 212 to rotate in the opposite direction to the feeding rod 14. When the flow is slowed down, the synchronous motor 122 drives the gear ring 212 to slowly synchronize. The friction is adjusted by adjusting the rotation of the cylinder 211 to reduce the defoaming caused by the rotation of the feeding rod 14.

[0048] To improve the long-distance conveying capacity of lightweight foamed concrete and significantly reduce defoaming during start-up and shutdown, the pre-feeding section and conveying section of the feeding rod 14 are designed in a segmented manner. Combined with the radial limiting effect of the buffer 12, the effective pushing torque of the feeding rod 14 is concentrated in the axial conveying direction, which suppresses radial overflow of materials and reduces the damage of radial shear to the foam.

[0049] With the coordinated speed regulation structure of the central tube 121 and the synchronous motor 122, the synchronous motor 122 drives the central tube 121 and the feeding rod 14 to rotate synchronously during startup, avoiding the generation of high-intensity shear force by the relative motion between the two at the moment of startup; subsequently, the synchronous motor 122 slowly decelerates to form a speed difference, smoothly pushing the material to be conveyed, fundamentally solving the pain point of easy foam breakage during the start-up and shutdown process of traditional equipment, and ensuring the stability of the pore structure of foam concrete after long-distance transportation.

[0050] By adjusting the speed and direction of the synchronous motor 122, the relative motion state between the central tube 121 and the feeding rod 14 can be flexibly controlled: the material flow is accelerated when rotating in opposite directions, and the material flow is slowed down when rotating synchronously, so as to meet the conveying needs under different construction rhythms and further reduce the risk of shearing and defoaming.

[0051] To effectively avoid equipment jamming and blockage, and improve operational stability and continuity, a guide plate 16 is set up to form an integral structure with the inner wall of the feed hopper 13 to address the problem of material seepage at the feed point of the feed hopper 13 and the opposite side of the buffer 12. The outer limiting ring 162 is nested in the limiting sleeve 214 of the central tube 121 to guide the foamed concrete to flow along the inner wall of the cylinder 211, reduce the contact between the material and the equipment gaps, and avoid jamming caused by material seepage.

[0052] The seepage backwash system formed by the manifold 161, the guide port 163, and the diverter 164 allows water to seal the gaps in the equipment through seepage and achieve real-time backwashing, thus cleaning up residual materials in a timely manner and completely avoiding equipment blockage problems.

[0053] The above description only outlines the basic principles and preferred embodiments of the present invention. Those skilled in the art can make many changes and modifications based on the above description, and these changes and modifications should fall within the protection scope of the present invention.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lightweight foamed concrete pouring and conveying device, characterized in that: The device includes a base (5), a horizontally placed discharge device (1) is provided on the top of the base (5), an upper cover plate (2) is installed on the upper surface of the discharge device (1), and a feed pipe (3) is provided on one side of the upper cover plate (2). The discharge device (1) includes a guide pipe (11) and a buffer (12). The buffer (12) is connected to a feed hopper (13). The feed hopper (13) and the bottom pipe (15) form a trough. A rotating feed rod (14) is provided inside the buffer (12) and the bottom pipe (15). The feed rod (14) is connected to the main shaft of a drive motor (4) installed outside the feed hopper (13). The buffer (12) includes a middle pipe (121) and a synchronous motor (122) that drives the middle pipe (121) to rotate. The synchronous motor (122) is electrically connected to the main board of the drive motor (4). The buffer (12) further includes a first limiting ring (123) and a second limiting ring (125). A positioning rod (124) is provided between the first limiting ring (123) and the second limiting ring (125) for limiting. The middle tube (121) is installed between the first limiting ring (123) and the second limiting ring (125). The middle tube (121) is rotatably connected to the first limiting ring (123) and the second limiting ring (125). The synchronous motor (122) is installed on the outer ring of the first limiting ring (123) and meshes with the gear ring (212) of the middle tube (121).

2. The lightweight foamed concrete pouring and conveying equipment as described in claim 1, characterized in that: A guide plate (16) is provided on the side where the feed hopper (13) is connected to the guide tube (11), and the guide plate (16) and the inner surface of the middle tube (121) are nested together.

3. The lightweight foamed concrete pouring and conveying equipment as described in claim 2, characterized in that: The central tube (121) includes a cylindrical body (211), and the surface of the cylindrical body (211) is provided with a gear ring (212) that meshes with a synchronous motor (122). Limiting sleeves (214) extend outward from both sides of the cylindrical body (211), and the cylindrical body (211) is nested inside the first limiting ring (123) and the second limiting ring (125) through the limiting sleeves (214).

4. The lightweight foamed concrete pouring and conveying equipment as described in claim 3, characterized in that: The surface of the limiting sleeve (214) is provided with a sealing ring (215), which is engaged with the internal grooves of the first limiting ring (123) and the second limiting ring (125).

5. The lightweight foamed concrete pouring and conveying equipment as described in claim 3, characterized in that: The toothed ring (212) is provided with a slot (213), which is nested with the second limiting ring (125).

6. The lightweight foamed concrete pouring and conveying equipment as described in claim 3, characterized in that: The guide plate (16) includes a housing (165), and a limiting ring (162) is provided on the side of the housing (165) opposite to the limiting sleeve (214). The limiting ring (162) extends to the inner wall of the limiting sleeve (214). A diverter (164) is provided inside the housing (165), and the diverter (164) is connected to the guide port (163) at the top of the limiting ring (162).

7. The lightweight foamed concrete pouring and conveying equipment as described in claim 6, characterized in that: The surface of the housing (165) where the mounting limit ring (162) is provided with a busbar (161).

8. The lightweight foamed concrete pouring and conveying equipment as described in claim 4, characterized in that: The second limiting ring (125) is provided with a positioning frame (126) that limits the position of the feed rod (14) spindle.

9. The lightweight foamed concrete pouring and conveying equipment as described in claim 1, characterized in that: The drive motor (4) and the synchronous motor (122) start simultaneously, and the synchronous motor (122) decelerates until it stops after 0-10s.

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