Feeding device for liquid cement grinding aid

Abstract

The utility model relates to the field of cement grinding aids, in particular to a feeding device for a liquid cement grinding aid. The liquid cement grinding aid adding device comprises a stirring tank, a first stirring device is mounted in the stirring tank, a motor for driving the first stirring device is mounted at the upper end of the stirring tank, and the liquid cement grinding aid adding device further comprises a drainage structure mounted at the top in the stirring tank; the mixing tank is fixed to the position, close to the top, of the outer wall of the stirring tank, a second stirring device is installed in the mixing tank, and the lower end of the mixing tank communicates with a drainage structure through a rubber pipe; the transmission mechanism consists of a first belt pulley, a second belt pulley and a transmission belt, the first belt pulley is fixed on an output shaft of the motor, and the second belt pulley is fixed on the second stirring device. The motor is connected with the second stirring device in the mixing tank through the transmission mechanism, and the process has an acceleration effect, so that the cement is stirred, and meanwhile, the mixing efficiency of water and the cement grinding aid is improved.

Description

Technical Field

[0001] The utility model relates to the field of cement grinding aids, in particular to a feeding device for liquid cement grinding aids. Background Art

[0002] Cement grinding aid is an additive that can improve cement mill efficiency, reduce energy consumption and save costs. The main raw materials of grinding aids include alcoholamines, such as triethanolamine, triisopropanolamine, etc. These grinding aids can accelerate the hydration heat during cement hydration, promote the hydration reaction of cement, and thus improve the late hydration strength of cement. In addition, grinding aids can also form stable complex ions with Fe3+ and Al3+ ions, reduce the setting time of cement, and improve the construction performance of slurry.

[0003] China's authorized patent announcement number: CN 220047938 U records "a feeding device for liquid cement grinding aid". The stirring motor is started by the stirring motor switch, and the stirring motor drives the stirring rod to rotate. The stirring rod drives the first stirring blade and the second stirring blade to rotate. The first stirring blade stirs the water and cement grinding aid in the dilution chamber to dilute the cement grinding aid. The second stirring blade stirs the material in the mixing chamber and the diluted cement grinding aid to mix the cement grinding aid with the material.

[0004] However, there are still the following defects and shortcomings in the application process:

[0005] The first stirring blade and the second stirring blade share the same stirring rod as the driving structure. For cement stirring, due to the resistance, the rotation speed of the second stirring blade will be very low, which directly limits the rotation speed of the first stirring blade, thus affecting the mixing efficiency between water and cement grinding aid.

[0006] Therefore, it is necessary to provide a new feeding device for liquid cement grinding aid to solve the above technical problems. Utility Model Content

[0007] In order to solve the above technical problems, the utility model provides a feeding device for liquid cement grinding aid.

[0008] The utility model provides a feeding device for liquid cement grinding aid, comprising a stirring tank, a first stirring device is installed inside the stirring tank, and a motor driving the first stirring device is installed at the upper end, and further comprising:

[0009] The drainage structure is installed at the top of the mixing tank;

[0010] A mixing tank is fixed to the outer wall of the stirring tank and close to the top, a second stirring device is installed inside the mixing tank, and the lower end of the mixing tank is connected to the drainage structure through a rubber tube;

[0011] The transmission mechanism is composed of a first pulley, a second pulley and a transmission belt for connection. The first pulley is fixed on the output shaft of the motor, and the second pulley is fixed on the second stirring device.

[0012] Preferably, the drainage structure includes an annular guide pipe installed on the top of the stirring tank, a plurality of nozzles are fixed to the lower end of the annular guide pipe, and a connecting pipe extending to the upper end of the stirring tank is fixed to the upper end of the annular guide pipe.

[0013] Preferably, a mounting block is welded to the outer wall of the stirring tank, and a positioning plate is welded to the outer wall of the mixing tank, and the positioning plate is bolted to the mounting block.

[0014] Preferably, the second stirring device comprises a transmission shaft rotating inside the mixing tank, and the outer wall of the transmission shaft is welded with spiral blades;

[0015] The second pulley is fixed to the upper end of the transmission shaft.

[0016] Preferably, the diameter of the first pulley is greater than the diameter of the second pulley.

[0017] Preferably, a drain pipe is fixed to the lower end of the mixing tank, a control valve is installed on the drain pipe, and the rubber tube is installed on the drain pipe.

[0018] Preferably, a feeding port is also provided outside the mixing tank.

[0019] Compared with the related art, the feeding device of the liquid cement grinding aid provided by the utility model has the following beneficial effects:

[0020] The utility model provides a feeding device for a liquid cement grinding aid, in which a motor is connected to a second stirring device inside a mixing tank through a transmission mechanism, which has a speed-increasing effect. Therefore, the rotation speed of the second stirring device is significantly higher than that of the first stirring device, thereby satisfying the stirring of cement and improving the mixing efficiency between water and the cement grinding aid. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a preferred embodiment of a feeding device for a liquid cement grinding aid provided by the utility model;

[0022] Figure 2 It is a schematic structural diagram of a cross-section of a stirring tank shown in the utility model;

[0023] Figure 3 It is a structural schematic diagram of the transmission connection between the motor and the second stirring device shown in the utility model;

[0024] Figure 4It is a schematic structural diagram of a cross-section of a mixing tank shown in the present invention.

[0025] Numbers in the figure: 1. stirring tank; 2. first stirring device; 3. motor; 4. annular guide pipe; 5. nozzle; 6. connecting pipe; 7. mounting block; 8. mixing tank; 9. positioning plate; 10. second stirring device; 101. transmission shaft; 102. blade; 11. first pulley; 12. second pulley; 13. transmission belt; 14. discharge pipe; 15. control valve; 16. rubber tube; 17. feeding port. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0031] See also Figures 1 to 4The embodiment of the utility model provides a feeding device for a liquid cement grinding aid, the feeding device for a liquid cement grinding aid comprises a stirring tank 1, a first stirring device 2 is installed inside the stirring tank 1, and a motor 3 for driving the first stirring device 2 is installed at the upper end, and further comprises:

[0032] The drainage structure is installed at the top of the mixing tank 1;

[0033] The mixing tank 8 is fixed to the outer wall of the mixing tank 1 and close to the top. A second stirring device 10 is installed inside the mixing tank 8, and the lower end of the mixing tank 8 is connected to the drainage structure through a rubber tube 16;

[0034] The transmission mechanism is composed of a first pulley 11, a second pulley 12 and a transmission belt 13 for connection. The first pulley 11 is fixed on the output shaft of the motor 3, and the second pulley 12 is fixed on the second stirring device 10. The diameter of the first pulley 11 is greater than the diameter of the second pulley 12.

[0035] It should be noted that: in the device, a mixing tank 8 is fixedly installed beside the stirring tank 1, and the mixing tank 8 is used to mix water and cement grinding aids. Therefore, this arrangement can also better control the space occupied by the device;

[0036] It should also be noted that the motor 3 drives the second stirring device 10 in the mixing tank 8 to rotate through the pulley and the belt. At the same time, the diameter of the first pulley 11 is larger than the diameter of the second pulley 12, so that the speed can be increased during the transmission process, so that the rotation speed of the second stirring device 10 is faster, thereby improving the mixing efficiency of water and cement grinding aid.

[0037] After mixing, it can be conducted to the drainage structure through the rubber tube 16, and sprayed onto the cement inside the mixing tank 1 by the drainage structure;

[0038] In this embodiment: the rubber tube 16 is detachably connected to the drainage structure, so after the cement grinding aid is completely introduced, the rubber tube 16 can be removed, and then clean water is injected into the mixing tank 8. Under the continuous rotation of the second stirring device 10, the inside of the mixing tank 8 is cleaned, and then the waste water can be directly discharged through the rubber tube 16.

[0039] In the embodiments of the present invention, please refer to Figure 1 and Figure 2 The drainage structure includes an annular guide pipe 4 installed on the top of the mixing tank 1, a plurality of nozzles 5 are fixed to the lower end of the annular guide pipe 4, and a connecting pipe 6 extending to the upper end of the mixing tank 1 is fixed to the upper end of the annular guide pipe 4.

[0040] It should be noted that the cement grinding aid enters along the connecting pipe 6, then flows into the annular guide pipe 4, and finally sprays out from the nozzle 5, so the spraying area is relatively large, which is more conducive to the mixing of cement and the grinding aid.

[0041] In the embodiments of the present invention, please refer to Figures 1 to 4 , a mounting block 7 is welded to the outer wall of the mixing tank 1, and a positioning plate 9 is welded to the outer wall of the mixing tank 8, and the positioning plate 9 is bolted to the mounting block 7;

[0042] The second stirring device 10 comprises a transmission shaft 101 rotating inside the mixing tank 8, and a spiral blade 102 is welded on the outer wall of the transmission shaft 101;

[0043] The second pulley 12 is fixed to the upper end of the transmission shaft 101 .

[0044] It should be noted that when the second pulley 12 rotates, it can directly drive the transmission shaft 101 to rotate, and then drive the blades 102 to rotate, and the blades 102 are used to stir and mix water and cement grinding aids. When the liquid is subsequently discharged, the blades 102 can also generate thrust.

[0045] In the embodiments of the present invention, please refer to Figure 3 A discharge pipe 14 is fixed to the lower end of the mixing tank 8 , a control valve 15 is installed on the discharge pipe 14 , and a rubber tube 16 is installed on the discharge pipe 14 . A feeding port 17 is also provided outside the mixing tank 8 .

[0046] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0047] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A feeding device for a liquid cement grinding aid, comprising a stirring tank (1), a first stirring device (2) being installed inside the stirring tank (1), and a motor (3) for driving the first stirring device (2) being installed at the upper end, characterized in that: Also includes: A drainage structure installed at the top of the mixing tank (1); A mixing tank (8) is fixed to the outer wall of the stirring tank (1) and close to the top. A second stirring device (10) is installed inside the mixing tank (8), and the lower end of the mixing tank (8) is connected to the drainage structure through a rubber tube (16); The transmission mechanism is composed of a first pulley (11), a second pulley (12) and a transmission belt (13) for connection, wherein the first pulley (11) is fixed on the output shaft of the motor (3), and the second pulley (12) is fixed on the second stirring device (10).

2. The feeding device for liquid cement grinding aid according to claim 1, characterized in that: The drainage structure comprises an annular flow guide pipe (4) installed at the top of the stirring tank (1), a plurality of nozzles (5) are fixed to the lower end of the annular flow guide pipe (4), and a connecting pipe (6) extending to the upper end of the stirring tank (1) is fixed to the upper end of the annular flow guide pipe (4).

3. The feeding device for liquid cement grinding aid according to claim 2, characterized in that: A mounting block (7) is welded to the outer wall of the stirring tank (1), and a positioning plate (9) is welded to the outer wall of the mixing tank (8), and the positioning plate (9) is bolted to the mounting block (7).

4. The feeding device for liquid cement grinding aid according to claim 3, characterized in that: The second stirring device (10) comprises a transmission shaft (101) rotating inside the mixing tank (8), and the outer wall of the transmission shaft (101) is welded with spiral blades (102); The second pulley (12) is fixed to the upper end of the transmission shaft (101).

5. The feeding device for liquid cement grinding aid according to claim 4, characterized in that: The diameter of the first pulley (11) is greater than the diameter of the second pulley (12).

6. The feeding device for liquid cement grinding aid according to claim 5, characterized in that: A discharge pipe (14) is also fixed to the lower end of the mixing tank (8), a control valve (15) is installed on the discharge pipe (14), and the rubber tube (16) is installed on the discharge pipe (14).

7. The feeding device for liquid cement grinding aid according to claim 6, characterized in that: The outside of the mixing tank (8) is also provided with a feeding port (17).

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