Liquid cement grinding aid agitator defoaming mechanism
By designing a liquid cement grinding aid mixing and defoaming mechanism, air pumps and vibration components are used to eliminate air bubbles during the mixing process, solving the problem of air bubbles in cement, achieving uniform mixing of cement grinding aid and cement, and improving the performance of cement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG BOLI BUILDING MATERIALS TECH CO LTD
- Filing Date
- 2022-11-10
- Publication Date
- 2026-07-21
AI Technical Summary
During the mixing process of liquid cement grinding aid, air can easily get mixed into the cement, forming bubbles, which affects the mixing effect between the cement grinding aid and cement and subsequent use.
A liquid cement grinding aid mixing and defoaming mechanism was designed, including a cylinder cover assembly, a mixing assembly, a vibration assembly, and a guide assembly. Air is extracted from the mixing cylinder by an air pump, and air bubbles are eliminated by negative pressure and vibration. The air bubbles are broken by a mixing rod to ensure uniform cement mixing.
It effectively prevents the formation of air bubbles in cement, ensures uniform mixing of cement grinding aid and cement, and improves the quality of cement use.
Smart Images
Figure CN115625795B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of cement grinding aid technology, specifically to a stirring and defoaming mechanism for liquid cement grinding aid. Background Technology
[0002] Cement grinding aids are additives used in the processing of cement clinker. Cement grinding aids are generally available in solid and liquid forms, which reduce the energy consumption required for grinding cement clinker and improve grinding efficiency. In addition, cement grinding aids do not affect the performance of cement.
[0003] After liquid cement grinding aid is added to cement clinker, it needs to be stirred by a stirring device to ensure that the cement grinding aid and cement are mixed evenly. However, during the stirring process, air will also be mixed into the cement, which will easily form air bubbles in the cement. This will affect the mixing effect of cement grinding aid and cement, and also affect the subsequent use of cement.
[0004] By setting up a stirring device that can eliminate air bubbles in cement, we prevent air bubbles from appearing in the cement during the stirring process, thereby ensuring that the cement grinding aid is mixed evenly with the cement and facilitating the subsequent use of the cement. Therefore, we propose a liquid cement grinding aid stirring and defoaming mechanism. Summary of the Invention
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this invention provides a liquid cement grinding aid stirring and defoaming mechanism, which has advantages such as preventing the generation of air bubbles in the cement during stirring, and solves the problem of air bubbles generated inside the cement grinding aid and cement during the stirring process.
[0007] (II) Technical Solution
[0008] To achieve the above-mentioned purpose of preventing air bubbles from forming in cement during mixing, the present invention provides the following technical solution: a liquid cement grinding aid mixing and defoaming mechanism, comprising a mixing drum assembly, a drum cover assembly hinged to the top of the mixing drum assembly, a mixing component arranged along its axis inside the mixing drum assembly, vibration components arranged on both the left and right sides of the mixing drum assembly, guide components movably connected to both the left and right sides of the bottom of the mixing drum assembly, and a processing table fixedly installed at the bottom of the guide components.
[0009] Preferably, the mixing drum assembly includes a mixing drum body, a discharge pipe is fixedly installed at the bottom of the circumferential surface of the mixing drum body, a valve is provided inside the discharge pipe, a fixing collar is fitted at the bottom of the mixing drum body, the fixing collar has an L-shaped cross-section, and insert plates are welded to both the left and right sides of the fixing collar.
[0010] Preferably, the cover assembly includes a cover body hinged to the top edge of the mixing drum body. A lifting handle is fixedly installed on the top edge of the cover body. An air extraction pipe is fixedly installed through the top of the cover body off-center. An installation frame is fixedly installed at the bottom of the cover body and at the opening of the air extraction pipe. The installation frame has an opening at the edge of the cover body. The ends of the installation frame are all L-shaped. A sealing cloth is inserted into the installation frame. The cross-section of the cover body is convex. A rubber ring is fixedly installed at the edge of the cover body. When the cover body covers the top of the mixing drum body, the rubber ring abuts against the top of the mixing drum body.
[0011] Preferably, the stirring assembly includes a rotating shaft rotatably connected to the center of the bottom wall of the stirring drum body. The rotating shaft passes through the bottom of the stirring drum body. An inclined plate is arranged in a circumferential array on the surface of the rotating shaft. The inclined plate slides against the bottom wall and side wall of the stirring drum body. A stirring rod one and a stirring rod two are arranged in a circumferential array on the surface of the rotating shaft and above the inclined plate. The projection of the stirring rod two in the vertical direction is located between two adjacent stirring rods one.
[0012] Preferably, the vibration assembly includes fixed seats welded to the left and right sides of the middle part of the mixing drum body. A drive motor is fixedly installed on the top of the fixed seat. A counterweight is fixedly installed on the output shaft of the drive motor. The counterweight is fan-shaped. The output shaft of the drive motor is fixedly installed at the center of the counterweight. The two drive motors rotate in the same direction. Initially, both counterweights are located directly below the output shaft of the drive motor.
[0013] Preferably, the guiding component includes a guide frame sleeved on the insert plate, a mounting groove is provided on the bottom wall of the guide frame, the cross-section of the guide frame is arc-shaped at the mounting groove, ball bearings are arranged in an array on the inner wall of the mounting groove, the ball bearings abut against the bottom of the insert plate, a vertical plate is provided on the side of the guide frame away from the mixing drum body, and a spring is fixedly installed between the end of the insert plate away from the mixing drum body and the vertical plate.
[0014] Preferably, the guide frame and the upright plate are both fixedly installed on the top of the processing table, the fixing collar abuts against the top of the processing table, and a clearance groove is provided through the top of the processing table. The clearance groove is arranged along the length direction of the processing table, and the rotating shaft is located inside the clearance groove.
[0015] (III) Beneficial Effects
[0016] Compared with the prior art, the present invention provides a liquid cement grinding aid stirring and defoaming mechanism, which has the following beneficial effects:
[0017] This liquid cement grinding aid mixing and defoaming mechanism works by placing a cover over the top of the mixing drum, compressing and deforming a rubber ring to seal the gap between the cover and the drum. An air pump then evacuates the air extraction pipe, while a sealing cloth blocks cement and cement grinding aid from entering the pipe. This creates negative pressure, suppressing and breaking air bubbles within the cement. An external drive source rotates the shaft, causing the tilting plate to rotate counter-clockwise, which in turn moves the cement from the lower half of the mixing drum upwards. The mixing rods agitate the cement, breaking up air bubbles that move to the top surface and are then expelled into the air in the upper part of the drum. A drive motor rotates a counterweight, and the centrifugal force generated by this rotation causes the mixing drum to vibrate, further expelling air bubbles and preventing their formation during mixing. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of a liquid cement grinding aid stirring and defoaming mechanism proposed in this invention.
[0019] Figure 2 This is a three-dimensional structural diagram of a liquid cement grinding aid stirring and defoaming mechanism proposed in this invention.
[0020] Figure 3 This is a front view cross-sectional three-dimensional structural diagram of the stirring component of a liquid cement grinding aid stirring and defoaming mechanism proposed in this invention.
[0021] Figure 4 This is a three-dimensional structural diagram of the cylinder cover assembly of a liquid cement grinding aid stirring and defoaming mechanism proposed in this invention.
[0022] Figure 5 This is a three-dimensional structural diagram of the guide component of a liquid cement grinding aid stirring and defoaming mechanism proposed in this invention.
[0023] Figure 6 This invention provides a stirring and defoaming mechanism for liquid cement grinding aids. Figure 5 A detailed, enlarged structural diagram of point A in the middle.
[0024] In the diagram: 1. Mixing drum assembly; 2. Drum cover assembly; 3. Mixing assembly; 4. Vibration assembly; 5. Guide assembly; 6. Processing table; 11. Mixing drum body; 12. Discharge pipe; 13. Fixing collar; 14. Insert plate; 21. Drum cover body; 22. Lifting handle; 23. Air extraction pipe; 24. Mounting frame; 25. Sealing cloth; 26. Rubber ring; 31. Rotating shaft; 32. Inclined plate; 33. Mixing rod one; 34. Mixing rod two; 41. Fixing base; 42. Drive motor; 43. Counterweight; 51. Guide frame; 52. Mounting groove; 53. Ball bearing; 54. Vertical plate; 55. Spring; 61. Clearance groove. Detailed Implementation
[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0026] Please see Figures 1-3 A liquid cement grinding aid mixing and defoaming mechanism includes a mixing drum assembly 1, which includes a mixing drum body 11. A discharge pipe 12 is fixedly installed at the bottom of the circumferential surface of the mixing drum body 11, and a valve, which is a ball valve, is installed inside the discharge pipe 12. A fixing ring 13 is fitted at the bottom of the mixing drum body 11. The fixing ring 13 has an L-shaped cross-section, and insert plates 14 are welded to both sides of the fixing ring 13. A drum cover assembly 2 is hinged to the top of the mixing drum assembly 1. A mixing assembly 3 is arranged inside the mixing drum assembly 1 along its axis. Vibration assemblies 4 are arranged on both sides of the mixing drum assembly 1. Guide assemblies 5 are movably connected to both sides of the bottom of the mixing drum assembly 1. A processing table 6 is fixedly installed at the bottom of the guide assembly 5, and the fixing ring 13 abuts against the top of the processing table 6.
[0027] Please see Figures 1-2 and Figure 4The cylinder cover assembly 2 includes a cylinder cover body 21 hinged to the top edge of the mixing drum body 11. A lifting handle 22 is fixedly installed on the top edge of the cylinder cover body 21. An air extraction pipe 23 is fixedly installed through the top of the cylinder cover body 21 off-center. A rubber tube is provided at one end of the air extraction pipe 23, and an air pump is provided at the other end of the rubber tube. A mounting frame 24 is fixedly installed at the bottom of the cylinder cover body 21 and at the opening of the air extraction pipe 23. The mounting frame 24 has an opening at the edge of the cylinder cover body 21. The ends of the mounting frame 24 are all L-shaped. A sealing cloth 25 made of non-woven fabric is inserted into the mounting frame 24. The cross-section of the cover body 21 is convex. The lower half of the cover body 21 is inserted into the opening of the mixing drum body 11. A rubber ring 26 is fixedly installed at the edge of the cover body 21. When the cover body 21 covers the top of the mixing drum body 11, the rubber ring 26 abuts against the top of the mixing drum body 11, and the gap between the cover body 21 and the mixing drum body 11 is sealed by the rubber ring 26.
[0028] Please see Figures 1-3 and Figure 5 The mixing assembly 3 includes a rotating shaft 31 rotatably connected to the center of the bottom wall of the mixing drum body 11. The rotating shaft 31 passes through the bottom of the mixing drum body 11, and a clearance groove 61 is provided through the top of the processing table 6. The clearance groove 61 is arranged along the length of the processing table 6, and the rotating shaft 31 is located inside the clearance groove 61. Inclined plates 32 are arranged in a circumferential array on the surface of the rotating shaft 31. The inclined plates 32 slide against the bottom and side walls of the mixing drum body 11. When the rotating shaft 31 rotates counterclockwise, the inclined plates 32 stir the cement and cement grinding aid mixture at the bottom of the mixing drum body 11 and drive the mixture upward. A first stirring rod 33 and a second stirring rod 34 are arranged in a circumferential array on the surface of the rotating shaft 31 and above the inclined plates 32. The vertical projection of the second stirring rod 34 is located between two adjacent first stirring rods 33. By rotating the first stirring rod 33 and the second stirring rod 34 inside the mixing drum body 11, stirring is performed, and air bubbles in the cement are dispersed.
[0029] Please see Figure 3 The vibration assembly 4 includes fixed seats 41 welded to the left and right sides of the middle of the mixing drum body 11. A drive motor 42 is fixedly installed on the top of the fixed seat 41. A counterweight 43 is fixedly installed on the output shaft of the drive motor 42. The counterweight 43 is fan-shaped, and the output shaft of the drive motor 42 is fixedly installed at the center of the counterweight 43. The two drive motors 42 rotate in the same direction, and the two counterweights 43 are initially located directly below the output shaft of the drive motors 42. Thus, when the drive motor 42 drives the counterweight 43 to rotate, the centrifugal force generated by the counterweight 43 causes the mixing drum body 11 to vibrate left and right.
[0030] Please see Figures 5-6The guide assembly 5 includes a guide frame 51 sleeved on the insert plate 14. A mounting groove 52 is formed on the bottom wall of the guide frame 51. The cross-section of the guide frame 51 at the mounting groove 52 is arc-shaped. Ball bearings 53 are arranged in an array on the inner wall of the mounting groove 52. The ball bearings 53 abut against the bottom of the insert plate 14, so that when the mixing drum body 11 vibrates left and right, the insert plate 14 slides back and forth inside the guide frame 51. The ball bearings 53 reduce the friction between the insert plate 14 and the guide frame 51. A vertical plate 54 is provided on the side of the guide frame 51 away from the mixing drum body 11. Both the guide frame 51 and the vertical plate 54 are fixedly installed on the top of the processing table 6. A spring 55 is fixedly installed between the end of the insert plate 14 away from the mixing drum body 11 and the vertical plate 54. The elasticity of the spring 55 promotes the reset of the mixing drum body 11 during vibration.
[0031] In use, by placing the lid body 21 on top of the mixing drum body 11, the rubber ring 26 is compressed and deformed, sealing the gap between the lid body 21 and the mixing drum body 11. Then, an air pump is used to extract air from the air extraction pipe 23. The sealing cloth 25 blocks the cement and cement grinding aid inside the mixing drum body 11, preventing them from entering the interior of the air extraction pipe 23. This extracts the air from inside the mixing drum body 11, creating negative pressure, inhibiting the formation of air bubbles in the cement, and promoting the collapse of air bubbles within the cement.
[0032] The external drive source drives the rotating shaft 31 to rotate, and the inclined plate 32 rotates counterclockwise with the rotating shaft 31, causing the cement in the lower half of the mixing drum body 11 to flow upward. The mixing rod 1 33 and the mixing rod 2 34 mix the cement and break up the air bubbles in the cement, causing the air bubbles inside the cement to move to the top surface of the cement and then be discharged into the air in the upper half of the mixing drum body 11.
[0033] The counterweight 43 is driven to rotate by the drive motor 42. The centrifugal force generated when the counterweight 43 rotates causes the mixing drum body 11 to vibrate left and right, which causes the air bubbles inside the mixing drum body 11 to be discharged. When the mixing drum body 11 vibrates, the insert plate 14 slides back and forth inside the guide frame 51, and the ball 53 rolls against the bottom of the insert plate 14, reducing the friction between the insert plate 14 and the guide frame 51. The elasticity of the spring 55 causes the mixing drum body 11 to reset when it vibrates.
[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A mixing and defoaming mechanism for liquid cement grinding aid, comprising a mixing drum assembly (1), characterized in that: The top of the stirring drum assembly (1) is hinged with a cylinder cover assembly (2), and a stirring assembly (3) is arranged inside the stirring drum assembly (1) along its axis. Vibration assemblies (4) are arranged on both the left and right sides of the stirring drum assembly (1). Guide assemblies (5) are movably connected to both the left and right sides of the bottom of the stirring drum assembly (1). A processing table (6) is fixedly installed at the bottom of the guide assembly (5). The mixing drum assembly (1) includes a mixing drum body (11), a discharge pipe (12) is fixedly installed at the bottom of the circumferential surface of the mixing drum body (11), a valve is provided inside the discharge pipe (12), a fixing ring (13) is sleeved at the bottom of the mixing drum body (11), the cross-section of the fixing ring (13) is L-shaped, and insert plates (14) are welded on both the left and right sides of the fixing ring (13). The guide assembly (5) includes a guide frame (51) sleeved on the insert plate (14). The bottom wall of the guide frame (51) is provided with an installation groove (52). The cross-section of the guide frame (51) at the installation groove (52) is arc-shaped. The inner wall of the installation groove (52) is provided with an array of balls (53). The balls (53) abut against the bottom of the insert plate (14). A vertical plate (54) is provided on the side of the guide frame (51) away from the mixing drum body (11). A spring (55) is fixedly installed between the end of the insert plate (14) away from the mixing drum body (11) and the vertical plate (54). The guide frame (51) and the upright plate (54) are both fixedly installed on the top of the processing table (6). The fixing collar (13) abuts against the top of the processing table (6). The top of the processing table (6) is provided with a clearance groove (61). The clearance groove (61) is arranged along the length direction of the processing table (6). The rotating shaft (31) is located inside the clearance groove (61).
2. The liquid cement grinding aid stirring and defoaming mechanism according to claim 1, characterized in that: The cap assembly (2) includes a cap body (21) hinged to the top edge of the mixing drum body (11). A lifting handle (22) is fixedly installed on the top edge of the cap body (21). An exhaust pipe (23) is fixedly installed through the top of the cap body (21) off-center. An installation frame (24) is fixedly installed at the bottom of the cap body (21) and at the opening of the exhaust pipe (23). An opening is provided at the edge of the cap body (21). The ends of the installation frame (24) are all L-shaped. A sealing cloth (25) is inserted into the installation frame (24). The cross-section of the cap body (21) is "convex". A rubber ring (26) is fixedly installed at the edge of the cap body (21). When the cap body (21) covers the top of the mixing drum body (11), the rubber ring (26) abuts against the top of the mixing drum body (11).
3. The liquid cement grinding aid stirring and defoaming mechanism according to claim 1, characterized in that: The stirring assembly (3) includes a rotating shaft (31) rotatably connected to the center of the bottom wall of the stirring drum body (11). The rotating shaft (31) passes through the bottom of the stirring drum body (11). An inclined plate (32) is arranged in a circumferential array on the surface of the rotating shaft (31). The inclined plate (32) slides against the bottom wall and side wall of the stirring drum body (11). A stirring rod one (33) and a stirring rod two (34) are arranged in a circumferential array on the surface of the rotating shaft (31) and above the inclined plate (32). The projection of the stirring rod two (34) in the vertical direction is located between two adjacent stirring rods one (33).
4. The liquid cement grinding aid stirring and defoaming mechanism according to claim 1, characterized in that: The vibration assembly (4) includes a fixed base (41) welded to the left and right sides of the middle part of the mixing drum body (11). A drive motor (42) is fixedly installed on the top of the fixed base (41). A counterweight (43) is fixedly installed on the output shaft of the drive motor (42). The counterweight (43) is fan-shaped. The output shaft of the drive motor (42) is fixedly installed at the center of the counterweight (43). The two drive motors (42) rotate in the same direction. Initially, the two counterweights (43) are located directly below the output shaft of the drive motor (42).