A foamed concrete mixing device with a foam supplement structure

Abstract

The present invention provides a foamed concrete mixing device with a foam replenishing structure applied to the field of concrete mixing. Through the cooperation of a suction collection frame, an air outlet pipe, a rotating rod, a guide air pipe, and a spiral air pipe, during the stirring and mixing process, the gas released from the fragmented foam is indirectly transferred to the spiral air pipe through the suction collection frame and the air outlet pipe, achieving the effect of bubble replenishment, thereby ensuring the quality of the foamed concrete. At the same time, through the cyclic replenishment of gas in a relatively sealed environment, it is avoided that the excessive number of foams leads to the decline in the quality of the foamed concrete. In addition, the tail end of the spiral air pipe is arranged in a multi-angle gradient pattern on the surface of the stirring rod, making the distribution of the foams formed after the air flow is discharged more three-dimensional and uniform, and the adjustment of the air flow discharge speed can be realized through the adjustment cover during the air flow discharge process to control the range distance of the foam replenishment, further ensuring the overall uniformity of the foam replenishment.

Description

Technical Field

[0001] The present application relates to the field of concrete mixing, and particularly relates to a foamed concrete mixing device with a foam replenishing structure. Background Art

[0002] Foamed concrete is a new type of lightweight thermal insulation material containing a large number of closed air holes formed by mechanically foaming a foaming agent through the foaming system of a foaming machine, uniformly mixing the foam with cement slurry, and then performing in-situ construction or mold forming through the pumping system of the foaming machine and natural curing. By forming closed foam holes inside the concrete, the concrete is made lightweight and has thermal insulation properties.

[0003] In existing foamed concrete mixing equipment, a foam stabilizer is usually used to enhance the persistence of foam. However, during the actual mixing process, the mixing equipment squeezes the concrete, causing the foam doped in the concrete to be fragmented, thereby reducing the actual content of foam in the foamed concrete, affecting the mixing quality of the foamed concrete and reducing the corresponding lightweight and heat insulation properties of the foamed concrete.

[0004] Therefore, we propose a foamed concrete mixing device with a foam replenishing structure. By mixing and stirring foam and concrete slurry to make foamed concrete, the gas released from the fragmented bubbles is sucked, collected, and then transferred back into the mixing equipment. By adjusting the outlet structure inside the mixing equipment, the replenished foam can be distributed in the concrete inside the mixing equipment in multiple angles and distances, thereby ensuring the uniformity of the mixing quality of the foamed concrete. Summary of the Invention

[0005] The purpose of the present application is to provide a foamed concrete mixing device with a foam replenishing structure during the process of mixing and stirring foam and concrete slurry to make foamed concrete, so as to replenish the fragmented foam caused by mixing extrusion to ensure the quality of the foamed concrete. Compared with the prior art, the device includes a mixing cylinder, a sealing top cover is installed at the top of the mixing cylinder, a suction collection frame is installed at the bottom of the sealing top cover, a transmission rod is installed through the center position of the suction collection frame, a fixing rod is installed around the surface of the tail end of the transmission rod, and a hollow rotating rod is fixedly connected to the tail end of the transmission rod through the fixing rod;

[0006] Stirring rods are fixedly installed on the surface of the rotating rod at equal intervals, an air guide pipe with its tail end extending into the rotating rod is arranged inside the stirring rod, and a spiral air pipe with its tail end extending to the surface of the rotating rod is connected through the surface of the air guide pipe;

[0007] A regulating cover body with a trapezoidal cross-section is installed inside the port of the spiral air pipe located outside the rotating rod, and the cross-sectional diameter of the regulating cover body near the tail end of the spiral air pipe is smaller than that of the other end.

[0008] Further, the arrangement directions of the ends of each spiral air pipe on the surface of the stirring rod are all different, and the arrangement angles of the ends of the spiral air pipes on the surface of the stirring rod form an arithmetic sequence. The exposed heights of the ends of each spiral air pipe on the surface of the stirring rod gradually increase in the direction close to the rotating rod.

[0009] Further, an air vent cover film is fixedly fitted at the end of the adjusting cover body. A connecting rod is movably connected through the interior of the air vent cover film, and the connecting rod is located on one side of the center of the air vent cover film. A shielding plate and a fan blade assembly are sleeved on the surface of the connecting rod. The shielding plate is located outside the air vent cover film and the fan blade assembly is located inside the adjusting cover body. The diameter of the shielding plate is smaller than that of the air vent cover film.

[0010] Further, the air vent cover film is composed of a hoop and a breathable film assembly. The edge of the hoop is fixed to the inner wall of the end of the adjusting cover body, the edge of the breathable film assembly is connected to the inner wall of the hoop, and the connecting rod passes through the interior of the breathable film assembly and is movably connected to the breathable film assembly.

[0011] Further, a support member is installed on the inner wall of the adjusting cover body, and the support member is located between the fan blade assembly and the air vent cover film. The support member is connected to the surface of the connecting rod through a bearing sleeve.

[0012] Further, an air inlet pipe and an air outlet pipe are installed through the bottom of the suction collection frame, and the air outlet pipe is located inside the air inlet pipe. The end of the air outlet pipe extends through to the inside of the rotating rod. Check valves are installed inside both the air inlet pipe and the air outlet pipe.

[0013] Further, a movable cover plate is fitted on the inner wall of the suction collection frame. A threaded connecting piece is fixedly installed through the interior of the movable cover plate. A reciprocating lead screw is sleeved on the surface of the transmission rod, and the surface of the reciprocating lead screw is in transmission connection with the threaded connecting piece.

[0014] Further, a driving motor is installed on the top of the sealing top cover, and the output end of the driving motor is connected to the top end of the transmission rod.

[0015] Further, the breathable film assembly is composed of a breathable film and a filter screen. The breathable film and the filter screen are installed on the inner wall of the hoop, and the filter screen is located outside the breathable film.

[0016] Further, ventilation holes are provided on the top of the sealing top cover, and the ventilation holes are located outside the driving motor and directly above the movable cover plate.

[0017] Compared with the prior art, the advantages of the present application are as follows:

[0018] (1) In this application, a suction collection frame, an outlet pipe, a rotating rod, a guide pipe, and a spiral ventilation pipe are installed. During the stirring and mixing process, the gas released by the fragmented foam is indirectly transferred to the spiral ventilation pipe through the suction collection frame and the outlet pipe, and then returns to the concrete slurry to form foam again, achieving the effect of bubble replenishment. This ensures the quality of the foamed concrete. At the same time, by circulating and replenishing the gas in a relatively sealed environment, it can avoid the decline in the quality of the foamed concrete caused by excessive foam in the foamed concrete.

[0019] (2) In this application, the tail end of the spiral ventilation pipe is arranged in a multi-angle gradient on the surface of the stirring rod, making the distribution of the foam formed after the gas is discharged more three-dimensional and uniform inside the stirring cylinder.

[0020] (3) In this application, an adjustment cover is installed, and the baffle moves eccentrically on the surface of the tail end of the adjustment cover, thereby having different acceleration effects on the gas flowing out of the spiral ventilation pipe, enabling the corresponding adjustment of the range of the replenished foam, and thus realizing the uniformity of the foam replenishment.

[0021] (4) In this application, the support member can prevent the connecting rod from detaching from the inside of the ventilation cover film under the action of gravity during use, ensuring the installation stability of the components inside the adjustment cover.

[0022] (5) In this application, the setting of the ventilation holes enables the air above the movable cover plate to be constantly at the same air pressure as the outside world, thereby reducing the resistance during the movement of the movable cover plate. Description of the Drawings

[0023] Figure 1 It is the installation drawing of the stirring cylinder, the sealing top cover, and the driving motor of this application;

[0024] Figure 2 It is the internal sectional view of the stirring cylinder of this application;

[0025] Figure 3 It is the installation drawing of the rotating rod and the suction collection frame of this application;

[0026] Figure 4 It is the state diagram of the foam replenishment principle of this application;

[0027] Figure 5 It is the enlarged view of part A of this application;

[0028] Figure 6 It is the distribution schematic diagram of the spiral ventilation pipe on the surface of the stirring rod of this application;

[0029] Figure 7 It is the schematic diagram of the air outlet angle of the spiral ventilation pipe of this application;

[0030] Figure 8Installation diagram of the spiral air vent pipe and the adjustment cover body of the present application;

[0031] Figure 9 Installation diagram of the adjustment cover body of the present application;

[0032] Figure 10 Schematic diagram of the adjustment cover body of the present application for adjusting the gas flow rate.

[0033] Explanation of the reference numerals in the figure:

[0034] 1. Stirring cylinder; 2. Sealing top cover; 3. Exhaust collection frame; 31. Movable cover plate; 32. Threaded connecting piece; 33. Transmission rod; 34. Air inlet pipe; 35. Air outlet pipe; 36. Reciprocating lead screw; 4. Driving motor; 5. Rotating rod; 51. Stirring rod; 52. Air guide pipe; 53. Spiral air vent pipe; 6. Adjustment cover body; 61. Ventilation cover film; 62. Baffle plate; 63. Connecting rod; 64. Fan blade assembly; 7. Check valve; 8. Fixed rod. Detailed implementation manners

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0036] Embodiment 1:

[0037] The present invention provides a foamed concrete mixing device with a foam replenishing structure. Please refer to Figure 1-5 , which includes a stirring cylinder 1. A sealing top cover 2 is installed at the top of the stirring cylinder 1. An exhaust collection frame 3 is installed at the bottom of the sealing top cover 2. A transmission rod 33 is installed through the center position of the exhaust collection frame 3. A fixed rod 8 is installed around the surface of the tail end of the transmission rod 33. The tail end of the transmission rod 33 is fixedly connected through the fixed rod 8 to a rotating rod 5 with a hollow interior;

[0038] The surface of the rotating rod 5 is fixedly installed with stirring rods 51 arranged at equal intervals. The interior of the stirring rods 51 is provided with an air guide pipe 52 whose tail end extends into the rotating rod 5. The surface of the air guide pipe 52 is penetrated and connected with a spiral air vent pipe 53 whose tail end extends to the surface of the rotating rod 5;

[0039] An adjustment cover body 6 with a trapezoidal cross-section is installed inside the port of the spiral air vent pipe 53 located outside the rotating rod 5, and the cross-sectional diameter of the adjustment cover body 6 near the tail end of the spiral air vent pipe 53 is smaller than that of the other end.

[0040] Specifically, during the stirring and mixing process, the foam in the concrete slurry is broken by the stirring rod 51, causing the internal gas to be released and rise to the upper space of the stirring cylinder 1. The released and diffused gas is absorbed into the suction collection frame 3 through the suction of the movable cover plate 31 and then introduced into the rotating rod 5. After that, it is introduced into the spiral ventilation pipe 53 through the air duct 52. The airflow passing through the spiral path has an initial velocity direction with a certain inclination angle when flowing out, increasing the angular distribution range of the foam formed when the airflow is injected into the concrete slurry after being discharged. While supplementing the foam, it can also ensure the uniformity of the foam distribution range to a certain extent. By supplementing the foam, the foam distribution amount of the foamed concrete will not be affected by the stirring and fragmentation during the mixing process, ensuring the quality of the foamed concrete.

[0041] Please refer to Figure 6-7 , the arrangement directions of the tails of each spiral ventilation pipe 53 on the surface of the stirring rod 51 are different, and the arrangement angles of the tails of the spiral ventilation pipes 53 on the surface of the stirring rod 51 form an arithmetic sequence. The exposed heights of the tails of each spiral ventilation pipe 53 on the surface of the stirring rod 51 gradually increase along the direction close to the rotating rod 5.

[0042] Specifically, in view of the fact that the air outlet directions of the spiral ventilation pipes 53 on the surface of the same stirring rod 51 are different and the tail heights of the spiral ventilation pipes 53 are unequal, the distribution of the foam formed after the airflow is discharged is more three-dimensional inside the stirring cylinder 1.

[0043] Please refer to Figure 8-10 , a ventilation cover film 61 is fixedly fitted at the tail end of the adjusting cover 6. A connecting rod 63 is movably connected through the inside of the ventilation cover film 61, and the connecting rod 63 is located on one side of the center of the ventilation cover film 61. A baffle 62 and a fan blade assembly 64 are sleeved on the surface of the connecting rod 63. Among them, the baffle 62 is located outside the ventilation cover film 61 and the fan blade assembly 64 is located inside the adjusting cover 6. The diameter of the baffle 62 is smaller than that of the ventilation cover film 61.

[0044] Specifically, after the gas flows through the spiral ventilation pipe 53 and into the inside of the adjusting cover 6, the airflow drives the fan blade assembly 64 to rotate, thereby driving the connecting rod 63 to rotate, causing the baffle 62 to perform eccentric motion on the surface of the tail end of the adjusting cover 6, and then having different degrees of blocking on the outlet area of the tail end of the adjusting cover 6, and then having different accelerating effects on the gas flowing out of the inside of the spiral ventilation pipe 53, so that the range of foam supplementation is correspondingly adjusted, thereby realizing the uniformity of foam supplementation.

[0045] The ventilation cover film 61 is composed of a hoop and a breathable film assembly. The edge of the hoop is fixed to the inner wall of the tail end of the adjusting cover 6, the edge of the breathable film assembly is connected to the inner wall of the hoop, and the connecting rod 63 passes through the inside of the breathable film assembly and is movably connected to the breathable film assembly.

[0046] Specifically, the breathable film assembly connected by the hoop can be used for breathing while blocking the concrete slurry inside the stirring cylinder 1 from entering the inside of the adjusting cover 6, thereby ensuring the smoothness of the internal pipeline air path of the spiral air pipe 53.

[0047] A support member is installed on the inner wall of the adjusting cover 6, and the support member is located between the fan blade assembly 64 and the ventilation cover film 61. The surface of the support member is connected to the connecting rod 63 through a bearing sleeve.

[0048] Specifically, the support member enables the connecting rod 63 and the fan blade assembly 64 installed thereon to be stably lapped inside the adjusting cover 6, preventing the connecting rod 63 from disengaging from the inside of the ventilation cover film 61 under the action of gravity during use, and ensuring the installation stability of the components inside the adjusting cover 6.

[0049] Please refer to Figure 5 , an air inlet pipe 34 and an air outlet pipe 35 are installed through the bottom of the suction collection frame 3, and the air outlet pipe 35 is located inside the air inlet pipe 34. The tail end of the air outlet pipe 35 extends through the inside of the rotating rod 5, and check valves 7 are installed inside both the air inlet pipe 34 and the air outlet pipe 35.

[0050] Specifically, the air inlet pipe 34 and the air outlet pipe 35 can perform one-way air intake and air outlet processing under the movement of the movable cover plate 31, thereby assisting in realizing gas circulation. Furthermore, the gas released due to the fragmentation of the foam inside the stirring cylinder 1 can be returned to the concrete slurry in the stirring cylinder 1 again to achieve foam replenishment.

[0051] Please refer to Figure 3 , a movable cover plate 31 is embedded and installed on the inner wall of the suction collection frame 3. A threaded connector 32 is fixedly installed through the inside of the movable cover plate 31. A reciprocating lead screw 36 is sleeved on the surface of the transmission rod 33, and the surface of the reciprocating lead screw 36 is in transmission connection with the threaded connector 32.

[0052] Specifically, the movable cover plate 31 is connected to the reciprocating lead screw 36 through the threaded connector 32. Then, when the transmission rod 33 drives the reciprocating lead screw 36 to rotate, it can indirectly drive the movable cover plate 31 to perform up and down operations inside the suction collection frame 3. Furthermore, through the up and down suction operation, the gas in the space near the top inside the stirring cylinder 1 can be unidirectionally sucked into the space below the movable cover plate 31 inside the suction collection frame 3 through the air inlet pipe 34. Then, during the downward movement of the movable cover plate 31, the gas is compressed and then unidirectionally conveyed into the inside of the rotating rod 5 through the air outlet pipe 35, and then transferred to the spiral air pipe 53 through the air guide pipe 52 to achieve gas circulation.

[0053] Please refer to Figure 1 , a driving motor 4 is installed on the top of the sealing top cover 2, and the output end of the driving motor 4 is connected to the top end of the transmission rod 33.

[0054] Specifically, after the driving motor 4 starts, it can drive the transmission rod 33 to rotate, and then drive the rotating rod 5 connected by the fixing rod 8 to rotate, realizing stirring and mixing, and providing support for the circumferential bubble supplement of the stirring rod 51.

[0055] The air-permeable membrane assembly is composed of an air-permeable membrane and a filter screen. The inner wall of the hoop is provided with an air-permeable membrane and a filter screen, and the filter screen is located outside the air-permeable membrane.

[0056] Specifically, the filter screen is made of wear-resistant material and can provide a wear-resistant isolation structure inside the air-permeable membrane and the stirring cylinder 1, so that the air-permeable membrane will not be damaged by the friction of the concrete slurry inside the stirring cylinder 1 during the ventilation process, thereby ensuring the service life of the air-permeable membrane.

[0057] The top of the sealing top cover 2 is provided with a ventilation hole, and the ventilation hole is located outside the driving motor 4 and directly above the movable cover plate 31.

[0058] Specifically, the setting of the ventilation hole can make the air above the movable cover plate 31 constantly in an air pressure state equal to the outside world when the movable cover plate 31 moves up and down reciprocally, thereby reducing the resistance during the movement of the movable cover plate 31.

[0059] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application, according to the technical solution of the present application and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present application.

Claims

1. A foamed concrete mixing device with a foam replenishing structure, including a mixing cylinder (1). Characterized in that A sealing top cover (2) is installed at the top of the mixing cylinder (1), a suction collection frame (3) is installed at the bottom of the sealing top cover (2), a transmission rod (33) is installed through the center position of the suction collection frame (3), a fixing rod (8) is installed around the surface of the tail end of the transmission rod (33), and the tail end of the transmission rod (33) is fixedly connected to a hollow rotating rod (5) through the fixing rod (8). A plurality of stirring rods (51) arranged at equal intervals are fixedly installed on the surface of the rotating rod (5), an air guide pipe (52) with its tail end extending into the rotating rod (5) is arranged inside the stirring rod (51), and a spiral air pipe (53) with its tail end extending to the surface of the rotating rod (5) is connected through the surface of the air guide pipe (52). A regulating cover body (6) with a trapezoidal cross-section is installed inside the port of the spiral air pipe (53) outside the rotating rod (5), and the cross-sectional diameter of the regulating cover body (6) near the tail end of the spiral air pipe (53) is smaller than that of the other end. An air inlet pipe (34) and an air outlet pipe (35) are installed through the bottom of the suction collection frame (3), and the tail end of the air outlet pipe (35) extends through the rotating rod (5). During the mixing process, the gas released from the broken foam is indirectly transferred to the spiral air pipe (53) through the air outlet pipe (35) by the suction collection frame (3).

2. The foamed concrete mixing device with a foam replenishing structure according to claim 1 Characterized in that The arrangement directions of the tail ends of each spiral air pipe (53) on the surface of the stirring rod (51) are different, and the arrangement angles of the tail ends of the spiral air pipes (53) on the surface of the stirring rod (51) form an arithmetic progression. The exposed heights of the tail ends of each spiral air pipe (53) on the surface of the stirring rod (51) increase successively along the direction close to the rotating rod (5).

3. The foamed concrete mixing device with a foam replenishing structure according to claim 1 Characterized in that An air vent cover film (61) is fixedly fitted at the tail end of the regulating cover body (6), a connecting rod (63) is movably connected through the air vent cover film (61), and the connecting rod (63) is located on one side of the center of the air vent cover film (61). A shielding plate (62) and a fan blade assembly (64) are sleeved on the surface of the connecting rod (63), wherein the shielding plate (62) is located outside the air vent cover film (61) and the fan blade assembly (64) is located inside the regulating cover body (6), and the diameter of the shielding plate (62) is smaller than that of the air vent cover film (61).

4. The foamed concrete mixing device with a foam replenishing structure according to claim 3 Characterized in that The air vent cover film (61) is composed of a hoop and a breathable film assembly. The edge of the hoop is fixed to the inner wall of the tail end of the regulating cover body (6), the edge of the breathable film assembly is connected to the inner wall of the hoop, and the connecting rod (63) passes through the breathable film assembly and is movably connected to the breathable film assembly.

5. The foamed concrete mixing device with a foam replenishing structure according to claim 3 It is characterized in that a support member is installed on the inner wall of the adjustment cover body (6), and the support member is located between the fan blade assembly (64) and the ventilation cover film (61), and the surface of the support member is connected to the connecting rod (63) through a bearing sleeve.

6. A foamed concrete mixing device with a foam replenishing structure according to claim 1 It is characterized in that the air outlet pipe (35) is located inside the air inlet pipe (34), and one-way valves (7) are installed inside both the air inlet pipe (34) and the air outlet pipe (35).

7. A foamed concrete mixing device with a foam replenishing structure according to claim 1 It is characterized in that a movable cover plate (31) is fitted and installed on the inner wall of the suction collection frame (3), a threaded connector (32) is fixedly penetrated inside the movable cover plate (31), a reciprocating lead screw (36) is sleeved on the surface of the transmission rod (33), and the surface of the reciprocating lead screw (36) is in transmission connection with the threaded connector (32).

8. A foamed concrete mixing device with a foam replenishing structure according to claim 1 It is characterized in that a driving motor (4) is installed on the top of the sealing top cover (2), and the output end of the driving motor (4) is connected to the top end of the transmission rod (33).

9. A foamed concrete mixing device with a foam replenishing structure according to claim 4 It is characterized in that the breathable membrane assembly is composed of a breathable membrane and a filter screen. The breathable membrane and the filter screen are installed on the inner wall of the hoop, and the filter screen is located outside the breathable membrane.

10. A foamed concrete mixing device with a foam replenishing structure according to claim 1 It is characterized in that a ventilation hole is provided on the top of the sealing top cover (2), and the ventilation hole is located outside the driving motor (4) and directly above the movable cover plate (31).

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