Exhaust device for autoclaved aerated concrete blocks

Abstract

The application discloses an exhaust device for autoclaved aerated concrete blocks and relates to the technical field of autoclaved aerated concrete block production, which comprises a mold box and an H-shaped rack, a rodless air cylinder is connected to the H-shaped rack through a linear module, a sliding block is installed on the rodless air cylinder, a diversified exhaust mechanism is arranged on the sliding block, and the diversified exhaust mechanism comprises a magnetic driver, a vibrating agitator and a medicine dropping device. The diversified exhaust mechanism is arranged, the mechanical stirring effect of the spiral stirring blade, the ultrasonic cavitation effect generated by the ultrasonic vibration rod and the medicine dropping effect of the medicine dropping device are cooperated with each other, the thoroughness of bubble elimination work is effectively improved, and the exhaust effect is obviously improved. The exhaust condition can be automatically monitored through the optical bubble sensor, real-time monitoring and quality feedback can be realized, and the speed of the stepping motor and the power of the ultrasonic wave can be automatically adjusted according to the bubble density through cooperation of the PLC controller.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of autoclaved aerated concrete block production, and particularly relates to an exhaust device for autoclaved aerated concrete block. BACKGROUND

[0002] In the production process of autoclaved aerated concrete block, air is entrained in the slurry during injection into the mold box, so the air bubbles in the slurry need to be removed, otherwise the quality of the concrete block will be affected. Therefore, an exhaust device is needed to remove the air bubbles.

[0003] According to the search, the patent with the application number 201810660807.6 discloses an exhaust device for autoclaved aerated concrete block, which includes two support plates and the like. The above prior art uses a motor to drive the rotating rod to rotate, so as to remove the air bubbles in the concrete slurry by mechanical stirring. However, the existing exhaust device only relies on simple mechanical stirring to remove air bubbles, which has limited effect on the removal of micro-bubbles, cannot effectively remove some small bubbles, thereby reducing the exhaust effect, and the existing exhaust device lacks process monitoring and quality feedback effect. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an exhaust device for autoclaved aerated concrete block, which effectively solves the problem that the existing exhaust device only relies on simple mechanical stirring to remove air bubbles, which has limited effect on the removal of micro-bubbles, cannot effectively remove some small bubbles, thereby reducing the exhaust effect, and the existing exhaust device lacks process monitoring and quality feedback effect.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] The exhaust device for autoclaved aerated concrete block comprises a mold box and an H-shaped rack, a rodless cylinder is connected to the H-shaped rack through a linear module, a sliding block is installed on the rodless cylinder, a diversified exhaust mechanism is arranged on the sliding block, and the diversified exhaust mechanism comprises a magnetic drive, a vibration stirrer and a medicine dropper.

[0007] The magnetic drive comprises a box body fixedly connected to the front outer wall of the sliding block, a motor seat fixedly connected to the top of the box body through two vibration isolators, a stepping motor fixedly installed on the top outer wall of the motor seat, a copper rotor coaxially fixed on the output shaft of the stepping motor, a stirring shaft rotatably installed at the center of the bottom of the box body, and a permanent magnet rotor coaxially fixed on the top end of the stirring shaft.

[0008] The vibration agitator comprises an ultrasonic vibration rod coaxially fixed to the bottom end of the stirring rotating shaft and spiral stirring blades welded on the outer wall of the ultrasonic vibration rod, and the front outer wall of the box body is fixedly connected with an optical bubble sensor through a sensor support.

[0009] As a preferred technical scheme of the present application, the copper rotor and the permanent magnet rotor constitute a magnetic coupling, and an air gap is arranged between the copper rotor and the permanent magnet rotor.

[0010] As a preferred technical scheme of the present application, the medicine dropping device comprises a fixing plate fixed to one side outer wall of the box body, a defoaming agent storage tank penetratingly fixed to the fixing plate, a medicine dropping pipe fixedly communicated with the bottom of the defoaming agent storage tank, and a flow control valve installed on the medicine dropping pipe.

[0011] As a preferred technical scheme of the present application, the ultrasonic vibration rod comprises a rod body, an ultrasonic transducer arranged inside the rod body, and micro-holes for releasing vibration distributed on the surface of the rod body; an ultrasonic generator is fixedly installed on the other side outer wall of the box body and electrically connected with the ultrasonic transducer through a conductive slip ring.

[0012] As a preferred technical scheme of the present application, the linear module comprises a linear guide rail fixedly connected to the front outer wall of the H-shaped rack, a transverse screw rod, a reciprocating sliding block slidingly connected to the linear guide rail, a screw pair fixedly embedded in the reciprocating sliding block and threadedly connected with the transverse screw rod, and a servo motor fixedly connected with the side wall of the linear guide rail through a support plate.

[0013] As a preferred technical scheme of the present application, the output shaft of the servo motor is coaxially fixedly connected with one end of the transverse screw rod through a shaft coupling.

[0014] As a preferred technical scheme of the present application, the front outer wall of the linear guide rail is symmetrically fixed with two bearing seats, and the transverse screw rod is rotatably installed between the two bearing seats.

[0015] As a preferred technical scheme of the present application, the bottom outer wall of the H-shaped rack is sequentially installed with two universal wheels with brakes, and the rear outer wall of the H-shaped rack is fixedly installed with a PLC controller.

[0016] The present application has the following advantages:

[0017] 1. The present application is provided with a diversified exhaust mechanism, which effectively improves the thoroughness of bubble elimination work through the synergistic cooperation of the mechanical stirring effect of the spiral stirring blades, the ultrasonic cavitation effect generated by the ultrasonic vibration rod, and the medicine dropping effect of the medicine dropping device, thereby significantly improving the exhaust effect.

[0018] 2、The present application cooperates mechanical rotary stirring and ultrasonic cavitation effect, the ultrasonic wave can significantly reduce the slurry viscosity, improve the bubble floating speed, facilitate the effective crushing of micron bubble, and the defoaming agent in the defoaming agent storage tank can be automatically dropped into the mold box through the medicine dropping tube, the chemical treatment method is used to solve the micro bubble that cannot be eliminated by the physical treatment method, thereby effectively improving the overall exhaust efficiency;

[0019] 3、The present application realizes the non-contact transmission between the stepping motor and the stirring shaft through the setting of the magnetic coupler, and the vibration caused by the operation of the ultrasonic vibration rod can be avoided through the vibration isolation effect of the two vibration isolation pads, thereby ensuring the normal use of the vibration stirrer and prolonging the service life of the stepping motor;

[0020] 4、During the exhaust process, the optical bubble sensor can automatically monitor the exhaust condition in the mold box, so that real-time monitoring and quality feedback can be performed, and the stepping motor speed and ultrasonic power can be automatically adjusted according to the bubble density through the cooperation of the PLC controller, which is beneficial to further improve the exhaust efficiency;

[0021] 5、The linear module can control the diversified exhaust mechanism to reciprocate above the mold box, thereby helping to expand the exhaust treatment range, facilitating sufficient and uniform exhaust treatment of the slurry in the mold box, and improving the comprehensiveness of the exhaust. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0023] Figure 1 It is a front view of the overall structure of the present application.

[0024] Figure 2 It is a three-dimensional enlarged structure diagram of the connection between the rodless cylinder and the diversified exhaust mechanism of the present application.

[0025] Figure 3 It is a three-dimensional enlarged structure diagram of the medicine dropping device in the present application.

[0026] Figure 4 It is a three-dimensional split structure diagram of the magnetic driver in the present application.

[0027] Figure 5 It is a front view structure diagram of the magnetic driver in the present application.

[0028] Figure 6This is a three-dimensional enlarged structural diagram of the linear module in this invention;

[0029] Figure 7 This is a three-dimensional enlarged structural diagram of the connection between the reciprocating slider and the lead screw in this invention;

[0030] Figure 8 This is a three-dimensional structural diagram of the entire invention from the rear view.

[0031] In the diagram: 1. Mold box; 2. H-shaped frame; 3. Rodless cylinder; 4. Sliding block; 5. Box body; 6. Vibration isolation pad; 7. Motor base; 8. Stepper motor; 9. Copper rotor; 10. Stirring shaft; 11. Permanent magnet rotor; 12. Ultrasonic vibration rod; 13. Spiral stirring blade; 14. Sensor bracket; 15. Optical bubble sensor; 16. Fixing plate; 17. Defoamer storage tank; 18. Dropper tube; 19. Flow control valve; 20. Ultrasonic generator; 21. Linear guide rail; 22. Bearing seat; 23. Transverse lead screw; 24. Reciprocating slider; 25. Lead screw pair; 26. Motor base; 27. Servo motor; 28. PLC controller. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0033] Example 1, referring to Figures 1-5 and Figure 8 The exhaust device for autoclaved aerated concrete blocks includes a mold box 1 and an H-shaped frame 2. Two casters with brakes are installed sequentially on the bottom outer wall of the H-shaped frame 2. A PLC controller 28 is fixedly installed on the rear outer wall of the H-shaped frame 2. The PLC controller 28 can control the operation of the electrical components of the entire device.

[0034] In this embodiment, a rodless cylinder 3 is connected to the H-shaped frame 2 via a linear module. A sliding block 4 is installed on the rodless cylinder 3. The sliding block 4 is equipped with a multi-functional exhaust mechanism, which includes a magnetic actuator, a vibrating stirrer, and a dripper.

[0035] Specifically, the magnetic actuator includes a housing 5 fixedly connected to the front outer wall of the sliding block 4, a motor base 7 fixedly connected to the top of the housing 5 via two vibration isolation pads 6, a stepper motor 8 fixedly mounted on the top outer wall of the motor base 7, a copper rotor 9 coaxially fixed to the output shaft of the stepper motor 8, a stirring shaft 10 rotatably mounted at the bottom center of the housing 5, and a permanent magnet rotor 11 coaxially fixed to the top of the stirring shaft 10; furthermore, the copper rotor 9 and the permanent magnet rotor 11 form a magnetic coupler, and an air gap is provided between the copper rotor 9 and the permanent magnet rotor 11;

[0036] Specifically, the vibrating stirrer includes an ultrasonic vibrating rod 12 coaxially fixed to the bottom of the stirring shaft 10 and a spiral stirring blade 13 welded to the outer wall of the ultrasonic vibrating rod 12. An optical bubble sensor 15 is fixedly connected to the front outer wall of the housing 5 through a sensor bracket 14. The optical bubble sensor 15 is an infrared transmission probe.

[0037] Furthermore, the ultrasonic vibration rod 12 includes a rod body, an ultrasonic transducer is provided inside the rod body, and microholes for releasing vibration are distributed on the surface of the rod body. An ultrasonic generator 20 is fixedly installed on the outer wall of the other side of the housing 5. The ultrasonic generator 20 is electrically connected to the ultrasonic transducer through a conductive slip ring.

[0038] In this embodiment, the following steps are taken: First, after the stepper motor 8 is started, the stirring shaft 10 drives the spiral stirring blades 13 on the ultrasonic vibrating rod 12 to rotate under the action of the magnetic coupler composed of the copper rotor 9 and the permanent magnet rotor 11. In this way, through the combination of mechanical rotation stirring and ultrasonic cavitation effect, the ultrasonic waves can significantly reduce the viscosity of the slurry and increase the floating speed of bubbles, thereby facilitating the effective breaking of micron-sized bubbles and improving the degassing efficiency. Second, the magnetic coupler enables contactless transmission between the stepper motor 8 and the stirring shaft 10. Furthermore, the vibration isolation effect of the two vibration isolation pads 6 prevents the vibration generated by the ultrasonic vibrating rod 12 from damaging the stepper motor 8, thus ensuring the normal use of the vibrating stirrer and extending the service life of the stepper motor 8. Finally, during the degassing process, the optical bubble sensor 15 can automatically monitor the degassing status inside the mold box 1, enabling real-time monitoring and quality feedback. In conjunction with the PLC controller 28, the stepper motor 8 speed and ultrasonic power can be automatically adjusted according to the bubble density, further improving the degassing efficiency.

[0039] Example 2, refer to Figure 3 This embodiment is an optimization based on embodiment 1. Specifically, the dripping device includes a fixing plate 16 fixed to the outer wall of one side of the box 5, a defoamer storage tank 17 that is fixed through the fixing plate 16, a dripping tube 18 that is fixedly connected to the bottom of the defoamer storage tank 17, and a flow control valve 19 installed on the dripping tube 18.

[0040] In this embodiment, the defoamer in the defoamer storage tank 17 can be automatically dripped into the mold box 1 through the drip tube 18. The chemical treatment method is used to solve the micro bubbles that cannot be eliminated by the physical treatment method, so as to meet the bubble elimination needs at different stages. The dripping speed of the defoamer can be adjusted through the flow control valve 19.

[0041] Example 3, referring to Figure 1 and Figures 6-7This embodiment is an optimization based on embodiment 1. Specifically, the linear module includes a linear guide rail 21 fixedly connected to the front outer wall of the H-shaped frame 2, a transverse lead screw 23, a reciprocating slider 24 slidably connected to the linear guide rail 21, a lead screw pair 25 fixedly embedded in the reciprocating slider 24 and threadedly connected to the transverse lead screw 23, and a servo motor 27 fixedly connected to the side wall of the linear guide rail 21 through a support plate 26.

[0042] Furthermore, the output shaft of the servo motor 27 is coaxially and fixedly connected to one end of the transverse lead screw 23 via a coupling. Two bearing seats 22 are symmetrically fixed on the front outer wall of the linear guide rail 21. The transverse lead screw 23 is rotatably installed between the two bearing seats 22. The rodless cylinder 3 is fixedly installed on the front outer wall of the reciprocating slider 24.

[0043] In this embodiment, the servo motor 27 controls the rotation of the transverse lead screw 23. Then, under the guidance of the linear guide rail 21, the lead screw pair 25, which is threadedly connected to the transverse lead screw 23, drives the multi-functional venting mechanism on the reciprocating slider 24 to reciprocate along the mold box 1. This helps to expand the venting range, facilitates the full and uniform venting of the slurry in the mold box 1, and improves the comprehensiveness of venting.

[0044] In conjunction with Examples 1-3, the usage process of the present invention is as follows: First, the slurry is injected into the mold box 1. At this time, the sliding block 4 on the rodless cylinder 3 controls the box 5 to move downward, so that the ultrasonic vibration rod 12 and the spiral stirring blade 13 on the box 5 can penetrate into the mold box 1 and the exhaust treatment can begin.

[0045] Secondly, after the stepper motor 8 is started, under the action of the magnetic coupler composed of the copper rotor 9 and the permanent magnet rotor 11, the stirring shaft 10 will drive the spiral stirring blades 13 on the ultrasonic vibration rod 12 to rotate. In this way, through the combination of mechanical rotation stirring and ultrasonic cavitation effect, the ultrasonic waves can significantly reduce the viscosity of the slurry and increase the floating speed of the bubbles, thereby facilitating the effective breaking of micron-sized bubbles and improving the exhaust efficiency.

[0046] Next, during the exhaust process, the optical bubble sensor 15 can automatically monitor the exhaust status inside the mold box 1, thereby enabling real-time monitoring and quality feedback. In conjunction with the PLC controller 28, the stepper motor 8 speed and ultrasonic power can be automatically adjusted according to the bubble density, which is beneficial to further improve the exhaust efficiency.

[0047] Finally, the servo motor 27 controls the rotation of the transverse lead screw 23. Then, under the guidance of the linear guide rail 21, the lead screw pair 25, which is threadedly connected to the transverse lead screw 23, drives the multi-functional venting mechanism on the reciprocating slider 24 to reciprocate along the mold box 1. This helps to expand the venting range and facilitates the full and uniform venting of the slurry in the mold box 1, improving the comprehensiveness of venting. In the final stage, the defoamer in the defoamer storage tank 17 can be automatically dripped into the mold box 1 through the drip tube 18. The chemical treatment method is used to solve the micro bubbles that cannot be eliminated by the physical treatment method, so as to meet the bubble elimination needs at different stages. The dripping speed of the defoamer can be adjusted by the flow control valve 19.

[0048] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An exhaust device for autoclaved aerated concrete blocks, comprising a mold box (1) and an H-shaped frame (2), characterized in that, The H-shaped frame (2) is connected to a rodless cylinder (3) via a linear module, and a sliding block (4) is installed on the rodless cylinder (3). The sliding block (4) is provided with a multi-functional exhaust mechanism, which includes a magnetic drive, a vibrating stirrer, and a dripper. The magnetic actuator includes a housing (5) fixedly connected to the front outer wall of the sliding block (4), a motor base (7) fixedly connected to the top of the housing (5) via two vibration isolation pads (6), a stepper motor (8) fixedly installed on the top outer wall of the motor base (7), a copper rotor (9) coaxially fixed on the output shaft of the stepper motor (8), a stirring shaft (10) rotatably installed at the bottom center of the housing (5), and a permanent magnet rotor (11) coaxially fixed to the top of the stirring shaft (10). The vibrating stirrer includes an ultrasonic vibrating rod (12) coaxially fixed to the bottom of the stirring shaft (10) and a spiral stirring blade (13) welded to the outer wall of the ultrasonic vibrating rod (12). An optical bubble sensor (15) is fixedly connected to the front outer wall of the housing (5) through a sensor bracket (14). The dripper includes a fixing plate (16) fixed to one side of the outer wall of the box (5), a defoamer storage tank (17) fixed to the fixing plate (16), a dripping tube (18) fixedly connected to the bottom of the defoamer storage tank (17), and a flow control valve (19) installed on the dripping tube (18). The ultrasonic vibration rod (12) includes a rod body, an ultrasonic transducer is provided inside the rod body, and microholes for releasing vibration are distributed on the surface of the rod body. An ultrasonic generator (20) is fixedly installed on the other side of the outer wall of the box (5), and the ultrasonic generator (20) is electrically connected to the ultrasonic transducer through a conductive slip ring.

2. The exhaust device for autoclaved aerated concrete blocks according to claim 1, characterized in that, The copper rotor (9) and the permanent magnet rotor (11) form a magnetic coupler, and an air gap is provided between the copper rotor (9) and the permanent magnet rotor (11).

3. The exhaust device for autoclaved aerated concrete blocks according to claim 1, characterized in that, The linear module includes a linear guide rail (21) fixedly connected to the front outer wall of the H-shaped frame (2), a transverse lead screw (23), a reciprocating slider (24) slidably connected to the linear guide rail (21), a lead screw pair (25) fixedly embedded in the reciprocating slider (24) and threadedly connected to the transverse lead screw (23), and a servo motor (27) fixedly connected to the side wall of the linear guide rail (21) through a support plate (26).

4. The exhaust device for autoclaved aerated concrete blocks according to claim 3, characterized in that, The output shaft of the servo motor (27) is coaxially and fixedly connected to one end of the transverse lead screw (23) via a coupling.

5. The exhaust device for autoclaved aerated concrete blocks according to claim 3, characterized in that, The linear guide (21) has two bearing seats (22) symmetrically fixed on its front outer wall, and the transverse lead screw (23) is rotatably installed between the two bearing seats (22).

6. The exhaust device for autoclaved aerated concrete blocks according to claim 1, characterized in that, Two casters with brakes are installed sequentially on the bottom outer wall of the H-type frame (2), and a PLC controller (28) is fixedly installed on the rear outer wall of the H-type frame (2).

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