An aerated brick slurry pouring device and method

Abstract

The application discloses an aerated brick slurry pouring device and method, which comprises a slurry tank, a cloth screen, a water supply pipe, an automatic control mechanism, a lifting mechanism for driving the cloth screen to ascend and descend, a discharge valve and a discharge pipe connected to the lower pipe opening of the slurry tank, a U-shaped screen body, a screen mesh arranged below the U-shaped screen body, a feeding pipe connected to the upper part of the U-shaped screen body and sleeved on the discharge pipe, a vibrator arranged on the upper part of the U-shaped screen body, an electric or pneumatic water supply valve arranged on the water supply pipe, and a water outlet end of the water supply pipe connected to the upper end of the discharge pipe to flush the gap between the discharge pipe and the feeding pipe. The method is to pour the slurry into the aerated brick mold box through the automatic control mechanism. The slurry can be uniformly and evenly poured into the aerated brick mold box, the slurry can quickly fill the aerated brick mold box, no air is mixed into the slurry, the working efficiency is high, and the aerated brick product produced has good quality.

Description

Technical Field

[0001] This invention belongs to the technical field of aerated concrete block equipment, and in particular to an aerated concrete block slurry pouring device and method. Background Technology

[0002] Autoclaved aerated concrete (AAC) blocks, also known as aerated concrete blocks, are blocks made using a high-temperature autoclaving process. AAC blocks offer advantages such as light weight, good thermal insulation, strong earthquake resistance, and easy processing, and are increasingly widely used.

[0003] In the production process of aerated concrete blocks, the slurry, after being mixed in the slurry tank, needs to be injected into the aerated concrete block mold box. Since the position of the discharge pipe is fixed relative to the mold box, the slurry can only be poured into the mold box slowly under its own weight to ensure uniform filling. However, the volume of the aerated concrete block mold boxes used in current production processes is often quite large, and the speed at which the slurry fills the mold box under its own weight is very slow, which greatly limits the efficiency of aerated concrete block casting production. At the same time, pouring the slurry directly into the aerated concrete block mold box from the discharge pipe can easily trap air into the slurry, forming large air bubbles inside the aerated concrete block, which seriously affects product quality. Summary of the Invention

[0004] The primary objective of this invention is to address the problems of the prior art by designing an aerated brick slurry pouring device. This device can uniformly and disperse the slurry into the aerated brick mold box, and the slurry quickly fills the mold box without any air getting trapped inside. This results in high work efficiency and produces aerated bricks of good quality.

[0005] The second objective of this invention is to provide a method for casting aerated brick slurry using this device.

[0006] The primary objective of this invention is achieved as follows: an aerated concrete block slurry casting device, comprising a top plate, a slurry tank mounted on the top plate, an electric or pneumatic discharge valve and a discharge pipe connected to the lower inlet of the slurry tank, a material distribution screen, a water supply pipe, an automatic control mechanism, and a lifting mechanism for driving the material distribution screen to rise and fall; the material distribution screen comprises an inverted U-shaped screen body composed of a left vertical plate, a right vertical plate, and an arc plate, with one or more layers of screen mesh provided between the left and right vertical plates, a material inlet located in the center of the arc plate, a material inlet connected to a material supply pipe fitted onto the discharge pipe, and vibrators mounted at the front and rear of the upper part of the arc plate; one end of the water supply pipe is connected to a high-pressure water source, and the other... One end is connected to the upper end of the discharge pipe to flush the gap between the discharge pipe and the inlet pipe with water. An electric or pneumatic water supply valve is installed on the water supply pipe. The automatic control mechanism includes a microprocessor, an aerated brick mold box position trigger switch, a material distribution screen bottom trigger switch, a material distribution screen middle trigger switch, and a material distribution screen top trigger switch. The microprocessor is electrically connected to the aerated brick mold box position trigger switch, the material distribution screen bottom trigger switch, the material distribution screen middle trigger switch, and the material distribution screen top trigger switch through a signal input module. The microprocessor is electrically connected to the electric or pneumatic discharge valve, the motor, the vibrator, and the electric or pneumatic water supply valve through a control module.

[0007] Preferably, the lifting mechanism includes a drive sprocket frame connected below the top plate, a guide sprocket frame connected below the slurry tank, a sprocket shaft horizontally mounted on the drive sprocket frame via bearings, a drive sprocket, a left traction sprocket, and a right traction sprocket coaxially fixed on the sprocket shaft, and four guide sprockets mounted on the guide sprocket frame; the left traction sprocket connects to a traction main chain, which connects to two traction branches, and the right traction sprocket connects to a traction main chain, which connects to two traction branches; the four traction branches respectively bypass the corresponding guide sprockets and connect to the fabric screen; a motor is provided on the top plate, which drives the drive sprocket, left traction sprocket, and right traction sprocket to rotate synchronously via a chain, and the left and right traction sprockets pull the fabric screen up and down via the traction main chain and traction branches.

[0008] Preferably, the bottom-of-the-screen trigger switch, the middle-position trigger switch, and the top-of-the-screen trigger switch are respectively a bottom-of-the-screen magnetic proximity switch, a middle-position magnetic proximity switch, and a top-of-the-screen magnetic proximity switch. A magnetic block is installed on the side of any one of the drive sprocket, left traction sprocket, or right traction sprocket. The corresponding bottom-of-the-screen magnetic proximity switches, middle-position magnetic proximity switches, and top-of-the-screen magnetic proximity switches are installed on the same side of the magnetic block via a mounting plate. The advantages of this preferred solution are: the use of magnetic proximity switches, which have fast response speed, strong anti-interference ability, long service life, and convenient installation, are suitable for installation and use on sprockets.

[0009] Preferably, the screen set between the left and right vertical plates is a three-layer perforated steel plate screen. The upper layer perforated steel plate screen has a screen hole diameter of 3.5-4.5 mm in the middle section and 5.5-6.5 mm in the front and rear sections; the middle layer perforated steel plate screen has a screen hole diameter of 5.5-6.5 mm in the middle section and 7.5-8.5 mm in the front and rear sections; and the lower layer perforated steel plate screen has a screen hole diameter of 7.5-8.5 mm in the middle section and 5.5-6.5 mm in the front and rear sections. The advantages of this preferred solution are: the perforated steel plate screen has high rigidity, can resist the impact of slurry, has a smooth screen surface, which is conducive to the dispersion of slurry to both sides, and the setting of the hole size of each layer is conducive to the uniform distribution of slurry.

[0010] Preferably, an upper support rod is provided below the top plate, and a lower support rod corresponding to the upper support rod is provided on the arc plate. A second magnetic proximity switch for the material feeding screen to the top and a magnetic block are respectively installed at the lower end of the upper support rod and the upper end of the lower support rod. The beneficial effect of this preferred solution is that the setting of the second magnetic proximity switch for the material feeding screen to the top improves the safety of equipment operation. Only when both the magnetic proximity switch for the material feeding screen to the top and the second magnetic proximity switch for the material feeding screen to the top are triggered simultaneously can the microprocessor move the aerated concrete block mold box, preventing damage to the equipment if the aerated concrete block mold box is moved while the material feeding screen is still inside.

[0011] Preferably, a pneumatic discharge valve, which is a pneumatic butterfly valve, is connected to the lower inlet of the slurry tank; a pneumatic water supply valve, which is a pneumatic ball valve, is installed on the water supply pipe. The advantages of this preferred solution are that the pneumatic butterfly valve and the pneumatic ball valve are more suitable for operation in humid environments, have a longer service life, and a lower failure rate.

[0012] The second objective of this invention is achieved as follows: a method for casting aerated brick slurry using the aerated brick slurry casting device of this invention, comprising the following steps: (1) When the aerated brick mold box is in place, the aerated brick mold box is in place trigger switch is triggered, the motor rotates clockwise quickly, and the material screen descends quickly; (2) When the material screen reaches the bottom, the trigger switch is triggered, the motor stops rotating, and the material screen descends to the bottom of the aerated brick mold box and stops descending; (3) After a pause of 4-6 seconds, the electric or pneumatic feeding valve is opened, and the slurry flows down into the feeding screen. After the slurry flows down for 5-8 seconds, the motor rotates slowly counterclockwise, the feeding screen rises slowly, the two vibrators are started, and the feeding screen rises slowly and vibrates to evenly pour the slurry into the aerated brick mold box. (4) When the material screen rises to the middle and upper part of the aerated brick mold box, the slurry is basically poured. The middle position trigger switch of the material screen is triggered, and the motor changes from slow counterclockwise rotation to fast counterclockwise rotation, and the material screen rises rapidly. (5) The material screen rises quickly to the top, the material screen reaches the top and the trigger switch is triggered, the motor stops rotating, the electric or pneumatic feeding valve is closed, the two vibrators are turned off, the material screen stops rising, and the aerated brick mold box is moved away. (6) After the aerated brick mold box moves for 5-10 seconds, ensure that the aerated brick mold box is completely removed, open the electric or pneumatic water supply valve, start the two vibrators, and vibrate and flush for 8-10 seconds to vibrate away the residual slurry on the cloth screen and flush away the slurry adsorbed in the gap between the discharge pipe and the feed pipe. Close the electric or pneumatic water supply valve, turn off the two vibrators, and wait for the next aerated brick mold box to arrive.

[0013] The advantages of this invention compared to existing technologies are as follows: (1) The present invention is equipped with a material distribution screen. The material distribution screen can evenly pour the slurry into the aerated brick mold box, which improves the pouring speed. At the same time, it can also avoid air being mixed into the slurry and avoid the formation of large air bubbles in the aerated brick, which would affect the product quality.

[0014] (2) The present invention has two vibrators on the inverted U-shaped screen body of the cloth screen. The vibrators can accelerate the rapid distribution and leakage of the slurry, thus improving the work efficiency. In addition, after the casting is completed, the two vibrators can also quickly shake off the residual slurry on the cloth screen.

[0015] (3) The present invention employs an automatic control mechanism, which includes a microprocessor, a signal input module, a control module, and several position trigger switches. The automatic control mechanism controls the operation of the electric or pneumatic feeding valve, the electric motor, the vibrator, and the electric or pneumatic water supply valve. This improves the automation level of the present invention, and enhances its working efficiency and reliability. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the aerated brick slurry casting device of the present invention; Figure 2 This is a three-dimensional structural diagram of the slurry tank and the cloth screen of the present invention; Figure 3 This is a three-dimensional structural schematic diagram of the lifting mechanism of the present invention; Figure 4 This is a three-dimensional structural diagram of the left traction sprocket, three magnetic proximity switches, and magnetic blocks of the present invention; Figure 5 This is a schematic diagram of the planar structure of the three-layer steel plate perforated screen of the present invention; Figure 6 This is a schematic diagram of the structure of the fabric screen in the top state of the present invention; Figure 7 This is a schematic diagram of the structure of the fabric screen in the middle position of the present invention; Figure 8This is a schematic diagram of the structure of the fabric screen at the bottom of the present invention.

[0017] In the diagram: 1. Top plate, 2. Slurry tank, 3. Pneumatic butterfly valve, 4. Discharge pipe, 5. Left vertical plate, 6. Right vertical plate, 7. Arc plate, 8. Upper layer steel plate perforated screen, 9. Middle layer steel plate perforated screen, 10. Lower layer steel plate perforated screen, 11. Feed pipe, 12. Vibrator, 13. Water supply pipe, 14. Pneumatic ball valve, 15. Aerated brick mold box positioning trigger switch, 16. Material distribution screen bottom magnetic proximity switch, 17. Material distribution screen middle position magnetic proximity switch, 18. Material distribution screen top magnetic proximity switch, 19. Material distribution screen top second magnetic proximity switch, 20. Magnetic block, 21. Upper support rod, 22. Lower support rod, 23. Drive sprocket frame, 24. Guide sprocket frame, 25. Sprocket shaft, 26. Drive sprocket, 27. Left traction sprocket, 28. Right traction sprocket, 29. Traction main chain, 30. Traction branch chain, 31. Guide sprocket, 32. Motor, 33. Aerated brick mold box. Detailed Implementation

[0018] The embodiments of the technical solution of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore merely examples and should not be construed as limiting the scope of protection of the present invention. In the description of this application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0019] like Figures 1 to 8As shown, an aerated concrete block slurry pouring device includes a top plate 1, a slurry tank 2 on the top plate 1, a pneumatic butterfly valve 3 and a discharge pipe 4 connected to the lower port of the slurry tank 2, a material distribution screen, a water supply pipe 13, an automatic control mechanism, and a lifting mechanism for driving the material distribution screen to rise and fall. The fabric screen comprises an inverted U-shaped screen body consisting of a left vertical plate 5, a right vertical plate 6, and an arc plate 7. Three layers of perforated steel mesh are provided between the left and right vertical plates 5 and 6. The upper layer of perforated steel mesh 8 has a 4 mm diameter screen hole in the middle section and a 6 mm diameter screen hole in the front and rear sections. The middle layer of perforated steel mesh 9 has a 6 mm diameter screen hole in the middle section and a 8 mm diameter screen hole in the front and rear sections. The lower layer of perforated steel mesh 10 has an 8 mm diameter screen hole in the middle section and a 6 mm diameter screen hole in the front and rear sections. An inlet is located in the middle of the arc plate 7, and an inlet pipe 11 is connected to the inlet and fitted onto the outlet pipe 4. Vibrators 12 are installed at the front and rear of the upper part of the arc plate 7. One end of the water supply pipe 13 is connected to a high-pressure water source, and the other end is connected to the upper end of the outlet pipe 4 to flush the gap between the outlet pipe 4 and the inlet pipe 11. A pneumatic ball valve 14 is installed on the water supply pipe 13. The lifting mechanism includes a drive sprocket frame 23 connected below the top plate 1, a guide sprocket frame 24 connected below the slurry tank 2, a sprocket shaft 25 horizontally mounted on the drive sprocket frame 23 via bearings, a drive sprocket 26, a left traction sprocket 27, and a right traction sprocket 28 coaxially fixed on the sprocket shaft 25, and four guide sprockets 31 mounted on the guide sprocket frame 24; the left traction sprocket 27 is connected to a traction main chain 29, which is connected to two traction branches 30; the right traction sprocket 28 is connected to a traction main chain 29, which is connected to two traction branches 30; the four traction branches 30 respectively bypass the corresponding guide sprockets 31 and are connected to the arc plate 7 above the fabric screen; a motor 32 is provided on the top plate 1, which drives the drive sprocket 26, the left traction sprocket 27, and the right traction sprocket 28 to rotate synchronously via a chain; the left traction sprocket 27 and the right traction sprocket 28 pull the fabric screen up and down via the traction main chain 29 and the traction branches 30.The automatic control mechanism includes a microprocessor, an aerated concrete block mold box 33 front end initiation trigger switch 15 installed on the ground, a magnetic block 20 installed on the side of the left traction sprocket 27, and a corresponding magnetic proximity switch 16 for the material screen reaching the bottom, a magnetic proximity switch 17 for the material screen in the middle position, and a magnetic proximity switch 18 for the material screen reaching the top, all mounted on the same side of the magnetic block 20 via a mounting plate. An upper support rod 21 is provided below the top plate 1, and a lower support rod 22 corresponding to the upper support rod 21 is provided on the arc plate 7. The lower end of rod 21 and the upper end of lower support rod 22 are respectively equipped with a second magnetic proximity switch 19 for the material screen reaching the top and a magnetic block 20; the microprocessor is electrically connected to the aerated brick mold box position trigger switch 15, the material screen bottom magnetic proximity switch 16, the material screen middle position magnetic proximity switch 17, the material screen top magnetic proximity switch 18, and the material screen top second magnetic proximity switch 19 through the signal input module; the microprocessor is electrically connected to the pneumatic butterfly valve 3, the motor 32, the two vibrators 12, and the pneumatic ball valve 14 through the control module.

[0020] A method for casting aerated concrete block slurry using the above-mentioned aerated concrete block slurry casting device includes the following steps: (1) When the aerated brick mold box 33 is in position, the aerated brick mold box is in position trigger switch 15 is triggered, the motor 32 rotates clockwise quickly, and the material screen descends quickly; (2) When the material screen reaches the bottom, the magnetic proximity switch 16 is triggered to approach the magnetic block 20, the motor 32 stops rotating, and the material screen descends to the bottom of the aerated brick mold box 33 and stops descending; (3) After a 5-second pause, the pneumatic butterfly valve 3 opens, and the slurry flows down into the slurry screen. After the slurry flows down for 6 seconds, the motor 32 rotates slowly counterclockwise, the slurry screen rises slowly, the two vibrators 12 start, and the slurry screen rises slowly and vibrates to evenly pour slurry into the aerated brick mold box 33. (4) The material screen rises to the middle and upper part of the aerated brick mold box 33, the slurry is basically poured, the magnetic proximity switch 17 in the middle position of the material screen is triggered to approach the magnetic block 20, the motor 32 changes from slow counterclockwise rotation to fast counterclockwise rotation, and the material screen rises rapidly. (5) The material screen rises quickly to the top. When the material screen reaches the top, both the magnetic proximity switch 18 and the second magnetic proximity switch 19 approach the magnetic block 20 and are triggered. The motor 32 stops rotating, the pneumatic butterfly valve 3 closes, the two vibrators 12 close, the material screen stops rising, and the aerated brick mold box 33 is moved away. (6) After the aerated brick mold box 33 moves for 8 seconds, ensure that the aerated brick mold box is completely removed, open the pneumatic ball valve 14, start flushing the water supply pipe 13, start the two vibrators 12, vibrate and flush for 9 seconds, vibrate off the residual slurry on the cloth screen, flush off the slurry adsorbed in the gap between the discharge pipe 4 and the feed pipe 11, close the pneumatic ball valve 14, close the two vibrators 12, and wait for the next aerated brick mold box to arrive.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. An aerated concrete block slurry pouring device, comprising a top plate, a slurry tank mounted on the top plate, and an electric or pneumatic discharge valve and a discharge pipe connected to the lower inlet of the slurry tank, characterized in that: It also includes a fabric screen, a water supply pipe, an automatic control mechanism, and a lifting mechanism for driving the fabric screen to rise and fall; the lifting mechanism includes a drive sprocket frame connected below the top plate, a guide sprocket frame connected below the slurry tank, a sprocket shaft horizontally mounted on the drive sprocket frame via bearings, a drive sprocket, a left traction sprocket, and a right traction sprocket coaxially fixed on the sprocket shaft, and four guide sprockets mounted on the guide sprocket frame; the left traction sprocket connects to one traction main chain, the traction main chain connects to two traction branch chains, the right traction sprocket connects to one traction main chain, the traction main chain connects to two traction branch chains, and so on. Each traction chain bypasses a corresponding guide sprocket and connects to the fabric screen; a motor is installed on the top plate, which drives the drive sprocket, left traction sprocket, and right traction sprocket to rotate synchronously via a chain. The left and right traction sprockets pull the fabric screen up and down via the traction main chain and traction branches; the fabric screen includes an inverted U-shaped screen body composed of a left vertical plate, a right vertical plate, and an arc plate. One or more layers of screen mesh are provided between the left and right vertical plates. A feed inlet is provided in the middle of the arc plate, and a feed pipe fitted onto the discharge pipe is connected to the feed inlet. Vibrators are installed at the front and rear of the upper part of the arc plate; the water supply... One end of the pipe is connected to a high-pressure water source, and the other end is connected to the upper end of the discharge pipe to flush the gap between the discharge pipe and the inlet pipe. An electric or pneumatic water supply valve is installed on the water supply pipe. The automatic control mechanism includes a microprocessor, an aerated concrete block mold box position trigger switch, a material feeding screen bottom trigger switch, a material feeding screen middle trigger switch, and a material feeding screen top trigger switch. The microprocessor is electrically connected to the aerated concrete block mold box position trigger switch, the material feeding screen bottom trigger switch, the material feeding screen middle trigger switch, and the material feeding screen top trigger switch via a signal input module. The microprocessor is connected to the electric... Alternatively, the pneumatic feeding valve, motor, vibrator, and electric or pneumatic water supply valve can be electrically connected; the bottom trigger switch, middle trigger switch, and top trigger switch of the feeding screen are respectively the bottom magnetic proximity switch, middle magnetic proximity switch, and top magnetic proximity switch of the feeding screen. A magnetic block is installed on the side of any one of the drive sprocket, left traction sprocket, or right traction sprocket. The bottom magnetic proximity switch, middle magnetic proximity switch, and top magnetic proximity switch of the feeding screen corresponding to the magnetic block are installed on the same side of the magnetic block through a mounting plate.

2. The aerated concrete block slurry casting device according to claim 1, characterized in that: The screen installed between the left and right vertical plates is a three-layer perforated steel plate screen. The upper layer of the perforated steel plate screen has a screen hole diameter of 3.5-4.5 mm in the middle section and 5.5-6.5 mm in the front and rear sections. The middle layer of the perforated steel plate screen has a screen hole diameter of 5.5-6.5 mm in the middle section and 7.5-8.5 mm in the front and rear sections. The lower layer of the perforated steel plate screen has a screen hole diameter of 7.5-8.5 mm in the middle section and 5.5-6.5 mm in the front and rear sections.

3. The aerated concrete block slurry casting device according to claim 1, characterized in that: An upper support rod is provided below the top plate, and a lower support rod corresponding to the upper support rod is provided on the arc plate. The lower end of the upper support rod and the upper end of the lower support rod are respectively provided with a second magnetic proximity switch and a magnetic block for the material screen to the top.

4. The aerated concrete block slurry casting device according to claim 1, characterized in that: The slurry tank is connected to a pneumatic discharge valve at the bottom pipe. This pneumatic discharge valve is a pneumatic butterfly valve. The water supply pipe is equipped with a pneumatic water supply valve. This pneumatic water supply valve is a pneumatic ball valve.

5. A method for casting aerated brick slurry using the aerated brick slurry casting device of claim 1, comprising the following steps: (1) When the aerated brick mold box is in place, the aerated brick mold box is in place trigger switch is triggered, the motor rotates clockwise quickly, and the material screen descends quickly; (2) When the material screen reaches the bottom, the trigger switch is triggered, the motor stops rotating, and the material screen descends to the bottom of the aerated brick mold box and stops descending; (3) After a pause of 4-6 seconds, the electric or pneumatic feeding valve is opened, and the slurry flows down into the feeding screen. After the slurry flows down for 5-8 seconds, the motor rotates slowly counterclockwise, the feeding screen rises slowly, the two vibrators are started, and the feeding screen rises slowly and vibrates to evenly pour the slurry into the aerated brick mold box. (4) When the material screen rises to the middle and upper part of the aerated brick mold box, the slurry is basically poured. The middle position trigger switch of the material screen is triggered, and the motor changes from slow counterclockwise rotation to fast counterclockwise rotation, and the material screen rises rapidly. (5) The material screen rises quickly to the top, the material screen reaches the top and the trigger switch is triggered, the motor stops rotating, the electric or pneumatic feeding valve is closed, the two vibrators are turned off, the material screen stops rising, and the aerated brick mold box is moved away. (6) After the aerated brick mold box moves for 5-10 seconds, ensure that the aerated brick mold box is completely removed, open the electric or pneumatic water supply valve, start the two vibrators, and vibrate and flush for 8-10 seconds to vibrate away the residual slurry on the cloth screen and flush away the slurry adsorbed in the gap between the discharge pipe and the feed pipe. Close the electric or pneumatic water supply valve, turn off the two vibrators, and wait for the next aerated brick mold box to arrive.

Images