Portland cement dry powder homogenizing device

Abstract

The Portland cement dry powder homogenizing device comprises a stirring tank, a screw feeding machine, a bottom tank and an air storage tank, the stirring tank is installed on the ground through a support, the lower portion of the stirring tank is conical, the upper portion of the bottom tank is communicated with the lower portion of the stirring tank through a first valve, and the lower portion of the bottom tank is communicated with the upper portion of the stirring tank through a backflow pipe; the gas storage tank is communicated with the lower end of the return pipe through a gas pipe, and a second valve is arranged on the gas pipe; a hopper is arranged on the lower portion of the screw feeding machine, and a discharging opening in the upper portion of the screw feeding machine is communicated with the upper portion of the stirring tank. According to the invention, when the screw feeding machine is used for feeding, cakes in Portland cement dry powder are crushed, the Portland cement dry powder is stirred by the stirring tank, and the Portland cement dry powder at the bottom of the stirring tank is blown back to the upper part of the stirring tank through the cooperation of the bottom tank and the return pipe, so that the Portland cement dry powder is homogenized and stirred in the vertical direction, and the homogenizing efficiency and quality are improved.

Description

Technical Field

[0001] The present application relates to the technical field of cement production, and in particular to a silicate cement dry powder homogenizing device. Background Art

[0002] Portland cement is a commonly used building material. Currently, Portland cement is often stored in woven bags. During storage, due to weather reasons, Portland cement dry powder is prone to caking, etc., and a device is needed to re-differentiate and homogenize the agglomerated Portland cement. For example, Chinese patent application number 202221265462.2 discloses a high-efficiency homogenizing device for Portland cement dry powder, which includes a frame, a body with a top opening fixedly connected to the top of the frame, a stirring assembly for stirring is provided in the body, and a driving assembly for driving the stirring assembly to rotate is provided on the frame, the stirring assembly includes a main rotating shaft, the main rotating shaft is rotatably connected to the body, the top of the main rotating shaft is fixedly connected to a main cross plate, and when the device is in use, the push plate needs to leave a gap with the body. When there is a fixed gap, silicate cement lumps gather at this position and cannot be stirred, and the homogenization efficiency of silicate cement dry powder is low. For example, Chinese patent application number 202321514907.0 discloses a powder homogenization device, including a body, a heating plate for drying the powder is embedded between the inner wall and the outer wall of the body, a positioning column with a hollow structure is rotatably connected to the center of the bottom end of the body, and the side wall of the positioning column is rotatably connected to multiple groups of first crushing rollers and second crushing rollers distributed at equal intervals and used to stir and break up the powder. Compared with the previous patent, it mainly crushes silicate cement lumps in the horizontal direction, and cannot homogenize silicate cement dry powder in the vertical direction. The lumps are easily deposited at the bottom, and there will still be a small amount of lumps in the silicate cement dry powder after stirring. Utility Model Content

[0003] In order to solve the above problems, the present application proposes a silicate cement dry powder homogenizing device, which is provided with an air blowing pipe at the bottom, and can use the air flow to blow the silicate cement dry powder back to the upper part of the mixing tank, thereby achieving homogenous mixing of the dry powder in the vertical direction and improving the homogenization efficiency and quality.

[0004] This application is achieved through the following technical solutions:

[0005] The present application proposes a silicate cement dry powder homogenizing device, comprising: a mixing tank, a screw loader, a bottom tank, and an air storage tank. The mixing tank is installed on the ground through a bracket, the lower part of the mixing tank is conical, the upper part of the bottom tank is connected to the lower part of the mixing tank through a first valve, and the lower part of the bottom tank is connected to the upper part of the mixing tank through a return pipe; the air storage tank is connected to the lower end of the return pipe through an air pipe, and a second valve is provided on the air pipe; a hopper is provided at the lower part of the screw loader, and the discharge port at the upper part of the screw loader is connected to the upper part of the mixing tank.

[0006] Furthermore, an exhaust pipe is provided on the upper part of the stirring tank, the exhaust pipe is communicated with the inner cavity of the stirring tank, and a filter cloth is provided in the middle of the exhaust pipe.

[0007] Furthermore, an agitator is provided in the stirring tank, a stirring motor is installed on the upper part of the stirring tank, and the rotating shaft of the stirring motor is coaxially connected to the agitator.

[0008] Furthermore, a discharge pipe is provided at the lower portion of the mixing tank, and a third valve is provided on the discharge pipe.

[0009] Furthermore, the first valve and the second valve are both electric valves, and the first valve and the second valve are interlocked.

[0010] Furthermore, the gas storage tank is connected to the air compressor through a pipeline.

[0011] The beneficial effects of the present application are as follows: when feeding, the screw feeder breaks up the lumps in the silicate cement dry powder, and the silicate cement dry powder at the bottom of the mixing tank is blown back to the upper part of the mixing tank through the cooperation of the bottom tank and the reflux pipe, thereby achieving homogenous mixing of the silicate cement dry powder in the vertical direction and improving the homogenization efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] In the figure: 1- mixing tank, 2- screw feeder, 3- bottom tank, 4- gas storage tank, 5- bracket, 6- first valve, 7- reflux pipe, 8- air pipe, 9- second valve, 10- hopper, 11- exhaust pipe, 12- filter cloth, 13- agitator, 14- agitating motor, 15- discharge pipe, 16- third valve. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0015] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0016] Furthermore, the terms "first," "second," and so forth, used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include at least one of the aforementioned features. Furthermore, the technical solutions of various embodiments may be combined, but only if they are achievable by persons of ordinary skill in the art. If a combination of technical solutions contradicts or is unachievable, such combination shall be deemed non-existent and outside the scope of protection claimed by this utility model.

[0017] like Figure 1 As shown, an embodiment of the present invention provides a silicate cement dry powder homogenizing device, comprising: a mixing tank 1, a screw loader 2, a bottom tank 3, and an air storage tank 4. The mixing tank 1 is installed on the ground through a bracket 5. The lower part of the mixing tank 1 is conical, and the upper part of the bottom tank 3 is connected to the lower part of the mixing tank 1 through a first valve 6, and the lower part of the bottom tank 3 is connected to the upper part of the mixing tank 1 through a return pipe 7; the air storage tank 4 is connected to the lower end of the return pipe 7 through an air pipe 8, and a second valve 9 is provided on the air pipe 8; a hopper 10 is provided at the lower part of the screw loader 2, and the discharge port at the upper part of the screw loader 2 is connected to the upper part of the mixing tank 1.

[0018] When silicate cement is stored, humid air can easily cause silicate cement powder to become damp and clump. Before mixing with other powders, the silicate cement powder needs to be crushed and homogenized to facilitate uniform mixing of the silicate cement powder and other powders. When using the equipment, workers cut the cement bag and pour the cement into the hopper 10. The screw feeder 2 drives the screw to rotate through the motor, thereby generating axial thrust, so that the silicate cement powder at the bottom of the screw feeder 2 is continuously lifted and fed into the mixing tank 1. During the movement of the silicate cement powder, the screw is constantly stirred. Under the action of shear force, the agglomerated silicate cement is broken and turned into powder again. After the silicate cement powder is fed into the mixing tank 1, the stirring motor 14 drives the agitator 13 to rotate, continuously stirring the silicate cement powder in the mixing tank 1 to achieve homogenization. After opening the first valve 6, the mixing tank 1, the silicate cement powder at the bottom of the bottom tank 3 enters the bottom tank 3, then the first valve 6 is closed and the second valve 9 is opened, and the compressed air in the air storage tank 4 is blown into the return pipe 7 through the air pipe 8. Since the first valve 6 is closed, the air flow can only be blown into the mixing tank 1 along the return pipe 7. When the air flow flows, it continuously takes away the silicate cement powder at the bottom of the bottom tank 3 and brings the silicate cement powder back to the upper part of the mixing tank 1. After the dry powder in the bottom tank 3 is blown out, the second valve 9 is closed. After a period of stirring, the first valve 6 is opened, and after filling the bottom tank 3, the silicate cement powder in the bottom tank 3 is returned to the mixing tank 1 according to the above steps, so as to achieve homogeneous stirring of the silicate cement powder in the vertical direction, so that the silicate cement powder in the mixing tank 1 is evenly mixed, and then discharged from the mixing tank 1 through the discharge pipe 15 to facilitate the next operation.

[0019] In a preferred embodiment, an exhaust pipe 11 is provided on the upper part of the mixing tank 1, the exhaust pipe 11 is connected to the inner cavity of the mixing tank 1, and a filter cloth 12 is provided in the middle of the exhaust pipe 11. The exhaust pipe 11 ensures that the air pressure in the mixing tank 1 remains balanced. When exhausting, the filter cloth 12 can filter the silicate cement dry powder in the air, reduce dust pollution, and avoid waste of cement dry powder.

[0020] Preferably, an agitator 13 is provided in the mixing tank 1, and a stirring motor 14 is installed on the upper part of the mixing tank 1. The rotating shaft of the stirring motor 14 is coaxially connected to the agitator 13. The stirring motor 14 drives the agitator 13 to stir the silicate cement dry powder in the mixing tank 1 so that the silicate cement dry powder is evenly mixed.

[0021] Specifically, a discharge pipe 15 is provided at the lower part of the mixing tank 1 , and a third valve 16 is provided on the discharge pipe 15 . After the mixing and homogenization is completed, the third valve 16 is opened to discharge the Portland cement dry powder in the mixing tank 1 out of the mixing tank 1 .

[0022] In a specific embodiment, the first valve 6 and the second valve 9 are both electric valves to facilitate remote control by a controller and improve automation. The first valve 6 and the second valve 9 are interlocked and can be electrically interlocked so that only one of the first valve 6 and the second valve 9 can be opened at the same time, so that the compressed air blown into the air storage tank 4 can only enter the mixing tank 1 from the return pipe 7, thereby carrying the silicate cement dry powder to the upper part of the mixing tank 1.

[0023] Preferably, the air storage tank 4 is connected to the air compressor through a pipeline so that there is enough compressed air in the air storage tank 4 to blow the silicate cement dry powder in the lower part of the bottom tank 3.

[0024] Of course, the present application may have many other implementations. Based on the present implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present application.

Claims

1. A silicate cement dry powder homogenizing device, characterized in that: include: A stirring tank (1), a screw feeder (2), a bottom tank (3), and an air storage tank (4); the stirring tank (1) is installed on the ground through a bracket (5); the lower part of the stirring tank (1) is conical; the upper part of the bottom tank (3) is connected to the lower part of the stirring tank (1) through a first valve (6); the lower part of the bottom tank (3) is connected to the upper part of the stirring tank (1) through a return pipe (7); the air storage tank (4) is connected to the lower end of the return pipe (7) through an air pipe (8), and the air pipe (8) is provided with a second valve (9); the lower part of the screw feeder (2) is provided with a hopper (10), and the discharge port of the upper part of the screw feeder (2) is connected to the upper part of the stirring tank (1).

2. A Portland cement dry powder homogenizing device according to claim 1, characterized in that: An exhaust pipe (11) is provided on the upper portion of the stirring tank (1), the exhaust pipe (11) is communicated with the inner cavity of the stirring tank (1), and a filter cloth (12) is provided in the middle portion of the exhaust pipe (11).

3. A Portland cement dry powder homogenizing device according to claim 1, characterized in that: The stirring tank (1) is provided with a stirrer (13), and a stirring motor (14) is installed on the upper part of the stirring tank (1). The rotating shaft of the stirring motor (14) is coaxially connected to the stirrer (13).

4. A Portland cement dry powder homogenizing device according to claim 1, characterized in that: A discharge pipe (15) is provided at the lower part of the stirring tank (1), and a third valve (16) is provided on the discharge pipe (15).

5. The device for homogenizing dry powder of Portland cement according to claim 1, characterized in that: The first valve (6) and the second valve (9) are both electric valves, and the first valve (6) and the second valve (9) are interlocked.

6. The device for homogenizing dry powder of Portland cement according to claim 1, characterized in that: The gas storage tank (4) is connected to the air compressor via a pipeline.

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