Aerated concrete block production device and process

Abstract

The invention belongs to the technical field of concrete block production, and discloses an aerated concrete block production device and process. The device comprises a casting device, a casting mold and a discharging component, wherein the discharging component comprises a bellows and a pressing plate arranged on the bellows, the bellows is connected to the end of a pump pipe of the casting device, and also comprises a normally open push switch; the device also comprises a driving component, the driving component is used to drive the pump pipe to rotate and lift, the push switch is electrically connected to the driving component, the driving component comprises a supporting plate arranged on a casting device frame and a motor arranged on the supporting plate, the motor is electrically connected to the push switch, the output shaft of the motor is connected to a driving gear, the supporting plate is rotatably connected to a driven gear, the driven gear is meshed with the driving gear, the pump pipe passes through the driven gear and the supporting plate, and the driven gear is threadedly connected to the pump pipe; the invention solves the problem of adjusting the height of the casting pump pipe according to the height of concrete in the casting mold, and is suitable for block mold casting.

Description

Technical Field

[0001] The present invention belongs to the technical field of concrete block production, and specifically relates to an aerated concrete block production device and process. Background Art

[0002] Aerated concrete block, full name Autoclaved Aerated Concrete Block, is a new type of building material with light weight, porous, good thermal insulation and fire resistance. It is mainly made of siliceous materials (such as sand, fly ash or silica sand) and calcium materials (such as cement, lime) and gasifier (aluminum powder) mixed in a certain proportion, and uniform foam is produced through hydration reaction, and then poured into molds, cut and cured.

[0003] In the production of concrete blocks, a pouring device is required to pour the block mold. Referring to the document with the existing publication (announcement) number CN112959486A, a fully automatic pouring system for aerated concrete block production is disclosed, including: a mixing system, a power system and a pouring system. The pouring system is arranged below the mixing system and connected, and the output end of the power system is connected to the pouring system; the pouring system includes a material receiving unit, a first pouring head and a second pouring head rotatably arranged on both sides of the material receiving unit, a third pouring head, two groups of swinging material control units for controlling the on and off of the first pouring head and the second pouring head respectively, and a rotating material control unit for controlling the on and off of the third pouring head. The slurry is poured along the bottom of the mold, and the pouring system is gradually lifted, which effectively reduces the risk of bubbles mixed into the slurry during the falling process; during the lifting process of the pouring system, the first pouring head and the second pouring head are gradually opened under the action of the connecting rod, so that the flow of the slurry pouring process is reduced, and the risk of bubbles mixed into the slurry during the flow process is prevented.

[0004] The farther the distance between the concrete pump pipe and the casting mold, the greater the drop will cause the concrete to generate a greater impact force when it hits the poured concrete layer, which not only causes the concrete to segregate, but also the turbulence formed by the concrete in the process of falling is more intense, and the shear force is also increased, which will bring air into the concrete and form more bubbles. Although the above patent reduces bubbles by gradually raising the casting system, it cannot adjust the height of the casting head in real time according to the actual height of the concrete in the casting mold. First, it will cause uneven concrete pouring, some areas are too thick, and some areas are too thin, affecting the strength of the concrete block; secondly, if the height is not adjusted in time, the drop of the concrete is difficult to control within the ideal range, the bubble problem is aggravated, and the density of the concrete is affected; thirdly, the casting process requires manual inspection of the height of the concrete in the mold and manual adjustment of the casting head, which is not only time-consuming but also inefficient. Summary of the invention

[0005] The purpose of this scheme is to provide an aerated concrete block production device to solve the problem of adjusting the height of the pouring pump pipe according to the height of the concrete in the pouring mold.

[0006] In order to achieve the above object, the present invention provides an aerated concrete block production device, comprising a casting device and a casting mold with an opening at the top, and also comprising:

[0007] A discharging assembly comprises a bellows and a pressing plate arranged on the bellows, and the bellows is connected to the end of a pump pipe of a casting device.

[0008] The principle of this solution is that the pump pipe of the pouring device extends into the pouring mold to start pouring. When the concrete in the mold gradually increases, it resists and pushes the pressure plate upward, thereby driving the bellows and the pump pipe to move upward.

[0009] The effects of this solution are as follows: (1) As the concrete in the mold is gradually filled, due to its poor fluidity, it will accumulate in the middle and apply pressure to the pressure plate. The pressure plate can guide the concrete to flow to the surroundings, making the concrete more evenly distributed in the mold. (2) The pressure plate drives the corrugated pipe to rise, so that the pump pipe adjusts the height of the pump pipe mouth according to the height of the concrete in the mold, reducing the impact on the poured layer during the pouring process, while reducing the generation of bubbles and improving the density and strength of the concrete. (3) By applying pressure to the pressure plate through the accumulation of concrete, the problem of manually checking the concrete height and manually adjusting the pouring head is avoided, thereby improving construction efficiency.

[0010] Furthermore, the discharging assembly also includes a normally open push switch, and the pressure plate is arranged in cooperation with the push switch; it also includes a driving assembly, and the driving assembly is used to drive the pump tube to rotate and lift, and the push switch is electrically connected to the driving assembly.

[0011] The principle and effect of this scheme are as follows: (1) The pressing plate moves upward under the pressure of concrete and touches the push switch. After the push switch is closed, the driving assembly drives the pump pipe to rotate and rise, and at the same time drives the bellows and the pressing plate to move. The pressing plate resets after it moves away from the surface of the poured concrete, and the push switch is disconnected. (2) Through the cooperation between the pressing plate and the push switch, when the switch is touched, the pump pipe is triggered to rise, avoiding manual monitoring and manual adjustment of the height of the pump pipe, thereby improving the pouring efficiency. (3) When the pressing plate is pressed and triggers the pump pipe to rise, the end of the pump pipe is prevented from being immersed in concrete for a long time, avoiding wear and blockage of the pump pipe. At the same time, a reasonable height difference is formed between the pump pipe and the poured concrete surface, reducing the bubbles generated during the pouring process.

[0012] Furthermore, the bellows sleeve is provided with a protective shell, and the push switch is arranged in the protective shell.

[0013] The principle and effect of this solution is to prevent the concrete slurry from contacting the push switch.

[0014] Furthermore, the protective shell is provided with a slide groove, and the pressure plate is slidably connected to the slide groove.

[0015] The principle and effect of this solution are that the slide groove provides positioning and guiding functions for the up and down movement of the pressure plate and the bellows.

[0016] Furthermore, it also includes a driving component, which includes a support plate arranged on the frame of the pouring device and a motor arranged on the support plate, the motor is electrically connected to the push switch, the output shaft of the motor is connected to a driving gear, the support plate is rotatably connected to a driven gear, the driven gear is meshed with the driving gear, the pump pipe passes through the driven gear and the support plate, and the driven gear is threadedly connected to the pump pipe.

[0017] The principle and effect of this solution are as follows: the push switch is closed by resistance, the motor is energized to drive the driving gear to rotate to drive the driven gear to rotate, and since the driven gear is threadedly connected to the pump pipe, the driven gear rotates and drives the pump pipe to rotate and rise to a suitable height, thereby reducing bubbles generated during the pouring process and concrete segregation.

[0018] Furthermore, a section of the pump pipe is an "L"-shaped elbow.

[0019] The principle and effect of this solution is that when the pump pipe rotates and rises, the "L"-shaped bend will prevent the corrugated pipe from moving vertically upward, but will make eccentric movement during the rising process, so that the concrete will not be concentrated in the center of the casting mold when discharged, but will be guided to the surroundings of the mold, avoiding uneven distribution of concrete in the mold.

[0020] Furthermore, the protective shell is connected to an elastic rope, and the free end of the elastic rope is connected to a knocking ball.

[0021] The principle and effect of this scheme are as follows: (1) Since the concrete has poor fluidity after being poured into the casting mold, the mold needs to be vibrated to promote the vibration flow of the concrete. When the pump pipe rotates and rises, the centrifugal force generated by its rotation acts on the knocking ball. Since the knocking ball is connected to the protective shell through an elastic rope, but has a certain degree of freedom of movement, the centrifugal force will throw the knocking ball out and knock the side wall of the mold, causing the mold to vibrate. The vibration wave is transmitted to the inside of the concrete, causing the bubbles in the concrete to move upward and eventually break and discharge, thereby improving the density of the concrete. Secondly, since the concrete has poor fluidity in the mold, the knocking ball can assist the flow of concrete and reduce voids during the knocking and vibration process. (2) When the pump pipe stops rising, the centrifugal force on the knocking ball gradually decreases, so that it moves away from the side wall of the mold, rotates to knock and vibrate the pressure plate and bellows, and vibrates off the concrete adhering to the outer wall of the pressure plate and bellows, preventing the concrete from solidifying on the pressure plate and bellows.

[0022] Furthermore, the number of the striking balls is a plurality of symmetrically arranged ones, and the casting mold is a square structure with an opening on the top.

[0023] The principle and effect of this scheme are as follows: (1) Due to the increase in the number of knocking balls, the knocking force can be distributed more evenly, the knocking frequency and coverage are increased, the knocking effect of knocking the casting mold is improved, and the fluidity of the concrete is further improved, so that it can be filled more fully in the mold. At the same time, when the "L"-shaped elbow stops rotating, the multiple knocking balls lose centrifugal force and knock the pressure plate multiple times, thereby improving the knocking effect on the pressure plate. (2) In this scheme, the main difference between the "L"-shaped elbow and the vertical pipe when connecting the knocking balls to knock the inner wall of the mold is that the transmission method and effect of the knocking force are different. When the knocking balls connected by the vertical pipe rotate, due to the symmetrical distribution of the knocking balls, they will almost simultaneously hit the inner wall of the mold, resulting in the knocking forces to a certain extent offsetting each other, reducing the transmission efficiency of the concrete vibration, thereby affecting the fluidity and density of the concrete. On the contrary, the "L"-shaped elbow changes the movement trajectory of the knocking balls. The knocking balls no longer hit at the same time, but knock the inner wall of the mold in sequence or alternately. This allows each strike to transfer energy more effectively, avoids the mutual cancellation of forces, and increases the vibration effect on the concrete. Furthermore, the curved structure on one side of the L-shaped elbow causes the distribution of the striking force on the inner wall of the mold to be more uneven during the rotation of the striking ball, so that each strike can produce a local impact force on one side of the side wall. This uneven striking force can more effectively push the concrete to flow around the mold and reduce the formation of air bubbles and voids. At the same time, the eccentric torque generated by the striking ball of the L-shaped elbow during rotation can provide a more continuous striking effect, further improving the quality and efficiency of concrete pouring. Therefore, when the striking ball connected to the L-shaped elbow strikes the inner wall of the mold, due to the different ways of transmitting the striking force, the mutual cancellation of the striking force is avoided, achieving a better striking effect.

[0024] A process for producing aerated concrete blocks comprises the following steps:

[0025] Step S10: pouring, extending the pump pipe of the pouring device into the mold to be poured, and the distance from the bottom of the pouring mold is no more than 1m, and then starting the pouring operation;

[0026] Step S20: Detection: Concrete accumulation in the casting mold pushes the bellows and the pressing plate to move upward, so that the pressing plate contacts the pressing switch, and the pressing switch is closed;

[0027] Step S30: the pump pipe is lifted, and after the push switch is resisted, the motor is started, and the pump pipe is driven to spirally rise through the driving gear and the driven gear, the bellows and the pressure plate are reset, the push switch is disconnected, and the motor stops;

[0028] Step S40: vibrating. When the pump tube spirally rises, the knocking ball hits the side wall of the casting mold; after the motor stops, the knocking ball hits the pressure plate.

[0029] The effects of this solution are as follows: (1) The pouring pump pipe is placed 1m away from the bottom of the pouring mold to control the height of the concrete, reduce the impact force when the concrete falls, and reduce the generation of bubbles. (2) When the concrete accumulates, it pushes the corrugated pipe and the pressure plate up to touch the press switch to detect the height of the concrete, thereby lifting the pump pipe and maintaining a constant height difference between the pump pipe and the concrete surface. (3) During the rising process of the pump pipe, the side wall of the pouring mold is hit by a knocking ball to assist the flow of concrete in the mold, expel bubbles through vibration, and increase the strength of the concrete. (4) When the motor stops, the knocking ball is subjected to a smaller centrifugal force and knocks the pressure plate to vibrate the bellows and the pressure plate to prevent the concrete adhering to the pressure plate and the outer wall of the bellows from solidifying. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The structure of the aerated concrete block production device of the present invention is shown in FIG. Figure 1 ;

[0031] Figure 2 The structure of the aerated concrete block production device of the present invention is shown in FIG. Figure 2 ;

[0032] Figure 3 The structure of the aerated concrete block production device of the present invention is shown in FIG. Figure 3 ;

[0033] Figure 4 A cross-sectional view of the discharging assembly of the present invention Figure 1 ;

[0034] Figure 5 A cross-sectional view of the discharging assembly of the present invention Figure 2 .

[0035] The figure marks in the drawings of the specification include: pouring device 1, pump pipe 11, bent pipe 111, frame 12, pouring mold 2, discharge assembly 3, bellows 31, pressure plate 32, push switch 33, protective shell 34, slide 341, drive assembly 4, support plate 41, motor 42, driving gear 43, driven gear 44, elastic rope 5, and knocking ball 6. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the concept and technical effects of the present invention in combination with the embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention:

[0037] Example:

[0038] See also Figure 1-Figure 5 , an aerated concrete block production device, including a pouring device 1 and a square pouring mold 2 with an opening on the top, a discharge assembly 3 is arranged on the pump pipe 11 of the pouring device 1, and the discharge assembly 3 includes a bellows 31 and a circular pressure plate 32 arranged on the bellows 31, and the bellows 31 is connected to the end of the pump pipe 11; the pump pipe 11 in this scheme is a plastic hose, which has good flexibility and is still traceable after several turns. When the pump pipe 11 of the pouring device 1 extends into the pouring mold 2 and starts pouring, when the concrete in the pouring mold 2 gradually increases and fills, due to the poor fluidity of the concrete, it will accumulate in the middle, thereby resisting and pushing the pressure plate 32 upward, thereby driving the bellows 31 and the pump pipe 11 to move upward. When the concrete is pressed on the pressure plate 32, the pressure plate 32 can guide the concrete to flow to the surroundings of the pouring mold 2, so that the concrete is more evenly distributed in the pouring mold 2. At the same time, the pressure plate 32 drives the bellows 31 to rise, so that the pump pipe 11 adjusts the height of the pump pipe mouth according to the height of the concrete in the mold, reducing the impact on the poured layer during the pouring process, while reducing the generation of bubbles and improving the density and strength of the concrete.

[0039] See also Figure 4 and Figure 5 The outer side of the bellows 31 is provided with a protective shell 34, and the protective shell 34 is provided with a slide groove 341. The pressure plate 32 is slidably connected with the slide groove 341, and the slide groove 341 provides a guide for the movement of the pressure plate 32; the discharging assembly 3 also includes a normally open push switch 33, and the push switch 33 is arranged in the protective shell 34 to prevent the concrete slurry from contacting the push switch 33. The discharging assembly 3 also includes a driving assembly 4, and the driving assembly 4 includes a support plate 41 arranged on the frame 12 of the pouring device 1 and a motor 42 arranged on the support plate 41. The motor 42 is electrically connected to the push switch 33, and the output shaft of the motor 42 is connected with a driving gear 43. The support plate 41 is rotatably connected with a driven gear 44, and the driven gear 44 is meshed with the driving gear 43. The pump pipe 11 passes through the driven gear 44 and the support plate 41. The outer wall of the pump pipe 11 is provided with an external thread, and the driven gear 44 is provided with an internal thread matching the external thread, so that the driven gear 44 is threadedly connected with the pump pipe 11. The pressing plate 32 is pressed by the concrete and moves upward to contact the pressing switch 33 (see Figure 4 and Figure 5), after the push switch 33 is closed by resistance, the motor 42 is energized to drive the driving gear 43 to rotate to drive the driven gear 44 to rotate. Since the driven gear 44 is threadedly connected to the pump pipe 11, the driven gear 44 drives the pump pipe 11 to rotate and rise to a suitable height, that is, to 1 meter from the concrete, thereby reducing bubbles and concrete segregation generated during the pouring process. When the pressure plate is away from the surface of the poured concrete, it resets, the push switch is disconnected, and the motor 42 stops. Among them, a section of the pump pipe 11 is set as an "L"-shaped bend 111. When the pump pipe 11 rotates and rises, the "L"-shaped bend 111 will prevent the corrugated pipe 31 from moving vertically upward, but will make eccentric movement during the rising process, so that the concrete will not be concentrated in the center of the casting mold 2 when discharged, but will be guided to the surroundings of the mold, avoiding uneven distribution of concrete in the mold.

[0040] The protective shell 34 is symmetrically connected with two groups of elastic ropes 5, and the free ends of the two groups of elastic ropes 5 are connected with knocking balls 6. Since the fluidity of concrete is poor after being poured in the casting mold 2, the mold needs to be vibrated to promote the vibration flow of the concrete. When the pump pipe 11 rotates and rises, the centrifugal force generated by its rotational motion acts on the knocking ball 6. Since the knocking ball 6 is connected to the protective shell 34 through the elastic rope 5, but has a certain degree of freedom of movement, the centrifugal force will throw the knocking ball 6 out and knock the side wall of the casting mold 2, causing the mold to vibrate, and the vibration wave is transmitted to the inside of the concrete, so that the bubbles in the concrete move upward, and finally break and discharge, thereby improving the density of the concrete. Secondly, since the fluidity of concrete in the mold is poor, the knocking ball 6 can assist the flow of concrete and reduce voids during the knocking and vibration process. When the pump tube 11 stops rising, the centrifugal force on the striking ball 6 gradually decreases, so that it moves away from the side wall of the casting mold 2 and instead strikes the vibration platen 32 and the bellows 31, thereby shaking off the concrete adhered to the outer walls of the platen 32 and the bellows 31 and preventing the concrete from solidifying on the platen 32 and the bellows 31.

[0041] In order to better realize the above device, the present invention also provides a process for producing aerated concrete blocks, comprising the following steps:

[0042] Step S10: pouring, extending the pump pipe 11 of the pouring device 1 into the mold 2 to be poured, and the distance from the bottom of the pouring mold 2 is no more than 1m, and then starting the pouring operation;

[0043] Step S20: Detection: Concrete is accumulated in the casting mold 2, pushing the bellows 31 and the pressing plate 32 upward, so that the pressing plate 32 contacts the pressing switch 33, and the pressing switch 33 is closed;

[0044] Step S30: the pump tube is lifted. After the push switch 33 is resisted, the motor 42 is started, and the pump tube 11 is driven to rotate and rise through the driving gear 43 and the driven gear 44. The bellows 31 and the pressure plate 32 are reset, the push switch 33 is disconnected, and the motor 42 stops rotating.

[0045] Step S40: vibrating. When the pump tube 11 rotates and rises, the knocking ball 6 hits the side wall of the casting mold 2; after the motor 42 stops rotating, the knocking ball 6 hits the pressing plate 32.

[0046] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An aerated concrete block production device, comprising a casting device (1) and a casting mold (2) having an opening at the top, characterized in that: Also includes: A discharge assembly (3), the discharge assembly (3) comprising a bellows (31) and a pressing plate (32) arranged on the bellows (31), the bellows (31) being in communication with the end of a pump pipe (11) of the pouring device (1); The discharge assembly (3) further comprises a normally open push switch (33), the pressure plate (32) and the push switch (33) being arranged in cooperation with each other; and further comprises a drive assembly (4), the drive assembly (4) being used to drive the pump tube (11) to rotate and rise and fall, the push switch (33) being electrically connected to the drive assembly (4).

2. The aerated concrete block production device according to claim 1, characterized in that: The bellows (31) is sleeved with a protective shell (34), and the push switch (33) is arranged in the protective shell (34).

3. The aerated concrete block production device according to claim 2, characterized in that: The protective shell (34) is provided with a sliding groove (341), and the pressing plate (32) is slidably connected to the sliding groove (341).

4. The aerated concrete block production device according to claim 3, characterized in that: The driving assembly (4) comprises a support plate (41) arranged on a frame (12) of the pouring device (1) and a motor (42) arranged on the support plate (41); the motor (42) is electrically connected to the push switch (33); an output shaft of the motor (42) is connected to a driving gear (43); the support plate (41) is rotatably connected to a driven gear (44); the driven gear (44) is meshed with the driving gear (43); the pump pipe (11) passes through the driven gear (44) and the support plate (41); and the driven gear (44) is threadedly connected to the pump pipe (11).

5. The aerated concrete block production device according to claim 4, characterized in that: A section of the pump pipe (11) is an "L"-shaped curved pipe (111).

6. The aerated concrete block production device according to claim 5, characterized in that: The protective shell (34) is connected to an elastic rope (5), and a free end of the elastic rope (5) is connected to a striking ball (6).

7. The aerated concrete block production device according to claim 6, characterized in that: The number of the striking balls (6) is a plurality and is symmetrically arranged, and the casting mold (2) is a square structure with an opening at the top.

8. A process for producing aerated concrete blocks, comprising applying the aerated concrete block production device according to any one of claims 1 to 7, characterized in that: The steps include: Step S10: pouring, extending the pump pipe (11) of the pouring device (1) into the mold (2) to be poured, with the distance from the bottom of the pouring mold (2) not exceeding 1 m, and then starting the pouring operation; Step S20: Detection: Concrete is accumulated in the casting mold (2), pushing the bellows (31) and the pressing plate (32) upward, so that the pressing plate (32) contacts the pressing switch (33), and the pressing switch (33) is closed; Step S30: the pump pipe is lifted, and after the push switch (33) is resisted, the motor (42) is started, and the pump pipe (11) is driven to rotate and rise through the driving gear (43) and the driven gear (44), the bellows (31) and the pressure plate (32) are reset, the push switch (33) is disconnected, and the motor (42) stops rotating; Step S40: vibrating. When the pump tube (11) rotates and rises, the knocking ball (6) hits the side wall of the casting mold (2); after the motor (42) stops rotating, the knocking ball (6) hits the pressure plate (32).

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