Raw material proportioning device

Abstract

The utility model relates to the technical field of proportioning equipment, in particular to a raw material proportioning device which comprises a proportioning tank and a stirrer arranged in the proportioning tank, and the stirrer can be rotated to stir a mixture in the proportioning tank and clean attachments on the inner side wall of the proportioning tank; in addition, the device further comprises an annular water spraying pipe and an air compressor. The annular water spraying pipe is located above the stirrer and fixedly connected to the inner side wall of the proportioning tank in the circumferential direction, and the annular water spraying pipe can spray water downwards to flush attachments on the inner side wall of the proportioning tank; the air compressor is arranged outside the proportioning tank and communicated with the top in the proportioning tank, high-pressure air is conveyed into the proportioning tank through the air compressor, and discharging of the mixture in the proportioning tank is accelerated. According to the proportioning tank, a mixture in the proportioning tank can be stirred through the stirrer, attachments on the inner side wall of the proportioning tank can be cleaned, and the load of the attachments on the stirrer can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of proportioning equipment technology, specifically to a raw material proportioning device. Background Technology

[0002] The gypsum board raw material mixing tank is a piece of equipment used to mix gypsum raw materials during the gypsum board production process. During the production process, it comes into contact with gypsum, water and some additives. Gypsum will gradually precipitate in water and form hard lumps. These lumps adhere to the tank wall and are difficult to remove. The added additives may also increase the viscosity of the substances, making cleaning more complicated.

[0003] Patent application number CN202122798321.9 discloses a raw material proportioning tank for easy cleaning in the production of paper-faced gypsum board. By utilizing the rotation of the stirring rod and the transmission of the driving gear and driven gear, the threaded rod can be rotated, thereby causing the scraper to slide on the inner wall of the tank, ultimately cleaning all the deposits on the inner wall of the tank. Although this can solve the problem of the deposits on the inner wall of the tank being difficult to clean, relying solely on the scraper to remove the deposits will significantly increase the load on the stirring rod used to drive the scraper to slide. Over time, this can easily lead to deformation and bending of the stirring rod, thereby affecting the uniformity and efficiency of the mixing. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a raw material proportioning device that can stir the mixture in the proportioning tank and clean the adhering substances on the inner side wall of the proportioning tank by stirring the agitator, and can reduce the load on the agitator required by the adhering substances.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] The raw material proportioning device includes a proportioning tank and a stirrer disposed inside the proportioning tank. Rotating the stirrer can agitate the mixture inside the proportioning tank and clean the deposits on the inner sidewall of the proportioning tank. In addition, it also includes an annular water spray pipe and an air compressor. The annular water spray pipe is located above the stirrer and is fixedly connected to the inner sidewall of the proportioning tank in a circumferential direction. The annular water spray pipe can spray water downwards to wash away the deposits on the inner sidewall of the proportioning tank. The air compressor is disposed outside the proportioning tank and communicates with the top of the proportioning tank. The air compressor delivers high-pressure air into the proportioning tank to accelerate the discharge of the mixture inside the proportioning tank.

[0007] As a further embodiment of this utility model: the stirrer includes a rotating shaft, a stirring rod, and double-helix stirring blades; the rotating shaft is vertically rotatably disposed inside the mixing tank; the middle part of the stirring rod is connected to the rotating shaft, and the two ends of the stirring rod are connected to the double-helix stirring blades; the outer periphery of the double-helix stirring blades is attached to the inner sidewall of the mixing tank.

[0008] As a further embodiment of this utility model, the upper end of the rotating shaft extends out of the mixing tank and is connected to a variable frequency motor.

[0009] As a further improvement of this utility model, one side of the annular water spray pipe is connected to a water pump located outside the mixing tank.

[0010] As a further improvement of this utility model, the top of the proportioning tank is provided with a feed pipe, and a flow meter is installed on the feed pipe.

[0011] As a further embodiment of this utility model: the top of the mixing tank is provided with a discharge pipe, and a knife gate valve is installed on the discharge pipe.

[0012] By adopting the above technical solution, this utility model will have the following beneficial effects:

[0013] The present invention provides a raw material proportioning device that, before mixing, first cleans the adhering substances on the inner wall of the proportioning tank through a ring-shaped water spray pipe, causing the looser parts of the adhering substances to fall off. This reduces the load that the agitator needs to bear when cleaning the adhering substances on the inner wall of the proportioning tank during mixing. After mixing, the mixture in the proportioning tank is quickly emptied by an air compressor, which can reduce the residence time of the gypsum slurry in the proportioning tank and prevent premature hardening. This reduces the amount of hardened gypsum slurry adhering substances remaining on the inner wall of the proportioning tank, thereby reducing the load that the agitator needs to bear when cleaning the adhering substances during the next mixing.

[0014] Compared with the prior art, this utility model can not only stir the mixture in the mixing tank and clean the adhering substances on the inner side wall of the mixing tank through the stirrer, but also reduce the load on the stirrer required by the adhering substances during stirring, thereby preventing the stirrer from deforming or bending and affecting the stirring effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the raw material proportioning device described in an embodiment of the present invention;

[0017] Figure 2 for Figure 1 An exploded view of the agitator in the raw material proportioning device described in the embodiment.

[0018] The correspondence between the labels and component names in the attached figures is as follows:

[0019] 1. Mixing tank; 2. Agitator; 21. Rotating shaft; 22. Agitator rod; 23. Double helical agitator blades; 3. Annular water spray pipe; 4. Air compressor; 5. Variable frequency motor; 6. Water pump; 7. Feed pipe; 71. Flow meter; 8. Discharge pipe; 81. Knife gate valve. Detailed Implementation

[0020] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0021] Please refer to Figure 1 and Figure 2 In one embodiment of the raw material proportioning device of this utility model, the raw material proportioning device includes a proportioning tank 1 and a stirrer 2 disposed in the proportioning tank 1. The proportioning tank 1 is used to mix gypsum board raw materials in the gypsum board production process. When in use, a certain amount of gypsum, water and some additives are put into the proportioning tank 1. The mixture in the proportioning tank 1 is stirred by rotating the stirrer 2 and the adhering substances on the inner wall of the proportioning tank 1 are cleaned. The above is the design in the prior art. Although this design can solve the problem that the adhering substances on the inner wall of the proportioning tank 1 are difficult to clean, relying solely on the stirrer 2 to scrape will greatly increase the load on the stirrer 2. Over time, this can easily lead to deformation and bending of the stirrer 2, thereby affecting the uniformity and efficiency of the mixing.

[0022] Based on this, the raw material proportioning device of this embodiment also includes an annular water spray pipe 3 and an air compressor 4; wherein, the annular water spray pipe 3 is located above the agitator 2 and welded to the inner wall of the proportioning tank 1 in the circumferential direction, the bottom of the annular water spray pipe 3 has a water spray hole, and one side of the annular water spray pipe 3 is connected to a water pump 6 located outside the proportioning tank 1, through which water is pumped into the annular water spray pipe 3, so that the water in the annular water spray pipe 3 is sprayed downward from the water spray hole, thereby washing away the deposits on the inner wall of the proportioning tank 1; the air compressor 4 is set outside the proportioning tank 1 and connected to the top of the proportioning tank 1, through which high-pressure air is delivered into the proportioning tank 1, forming a certain positive pressure in the proportioning tank 1, and using the pressure difference to quickly empty the mixture in the proportioning tank 1.

[0023] In this embodiment, before mixing, the adhering materials on the inner wall of the mixing tank 1 are cleaned by the annular water spray pipe 3, so that the looser parts of the adhering materials fall off. This reduces the load that the agitator 2 needs to bear when cleaning the adhering materials on the inner wall of the mixing tank 1 during mixing. After mixing, the mixture in the mixing tank 1 is quickly emptied by the air compressor 4, which can reduce the residence time of the gypsum slurry in the mixing tank 1 and prevent premature hardening. This reduces the amount of hardened gypsum slurry adhering materials remaining on the inner wall of the mixing tank 1, thereby reducing the load that the agitator 2 needs to bear when cleaning the adhering materials during the next mixing.

[0024] In this embodiment, the stirrer 2 includes a rotating shaft 21, stirring rods 22, and double-helix stirring blades 23. The rotating shaft 21 is vertically rotatable inside the mixing tank 1. Multiple stirring rods 22 are arranged along the rotating shaft 21, with the middle of each rod welded to the rotating shaft 21, and double-helix stirring blades 23 welded to both ends. The double-helix stirring blades 23 have a double-helix structure centered on the rotating shaft, and their outer periphery is attached to the inner wall of the mixing tank 1. When using the stirrer 2, rotating the rotating shaft 21 drives the stirring rods 22 and double-helix stirring blades 23 to rotate, thus stirring the mixture in the mixing tank 1. Simultaneously, the outer periphery of the double-helix stirring blades 23 scrapes away any adhering material from the inner wall of the mixing tank 1. Because the double-helix stirring blades 23 can simultaneously stir in two directions and produce continuous flow of the mixture, they can provide a highly efficient mixing effect, ensuring uniform distribution of the mixture in the proportioning tank 1, thereby effectively reducing the resistance during emptying and further accelerating the emptying of the mixture in the proportioning tank 1; moreover, the rotation of the helical blades can also resuspend the material deposited at the bottom of the tank, preventing the accumulation of deposits, thereby further reducing the load on the stirrer 2. Of course, the stirrer 2 of this utility model can also adopt the stirring rod 22, driving gear, driven gear, threaded rod and scraper sleeve of the patent application number CN202122798321.9, or other existing structural designs, as long as they can achieve the effect of stirring the mixture in the proportioning tank 1 and cleaning the adhering substances on the inner wall of the proportioning tank 1.

[0025] Specifically, the upper end of the rotating shaft 21 extends out of the mixing tank 1 and is connected to a variable frequency motor 5. The output shaft of the variable frequency motor 5 is mounted on the top wall of the mixing tank 1 through a bearing with a mounting seat, and is coaxially connected to the rotating shaft 21 through a coupling. The variable frequency motor 5 is an existing type of motor driven by a frequency converter. It controls the speed and torque of the motor by changing the frequency and voltage of the power supply through the frequency converter, thereby adjusting the speed of the stirrer 2 as needed to ensure that the mixture in the mixing tank 1 can be quickly and evenly stirred before being emptied.

[0026] Specifically, the top of the mixing tank 1 is provided with a feed pipe 7, and a flow meter 71 is installed on the feed pipe 7. The amount of raw material entering the mixing tank 1 can be controlled by the flow meter 71.

[0027] Specifically, the top of the mixing tank 1 is equipped with a discharge pipe 8, and a knife gate valve 81 is installed on the discharge pipe 8. Since the gypsum slurry is a fluid containing solid particles, the valve plate of the knife gate valve 81 is blade-shaped, which can cut the solid particles in the fluid and prevent blockage.

[0028] The method of use or working principle of this utility model is as follows:

[0029] First, a measured amount of gypsum, water, and some additives are fed into the proportioning tank 1 through the feed pipe 7 via the flow meter 71. Then, water is pumped into the annular spray pipe 3 by the water pump 6, causing the water in the annular spray pipe 3 to spray downwards to wash away the adhering substances on the inner wall of the proportioning tank 1, causing the looser parts of the adhering substances to fall off. Next, the rotating shaft 21 is driven to rotate by the variable frequency motor 5, thereby driving the stirring rod 22 and the double helix stirring blade 23 to rotate to stir the mixture in the proportioning tank 1. At the same time, the outer circumference of the double helix stirring blade 23 is used to scrape away the residual adhering substances on the inner wall of the proportioning tank 1. Finally, high-pressure air is delivered into the proportioning tank 1 by the air compressor 4 to form a certain positive pressure in the proportioning tank 1, and the mixture in the proportioning tank 1 is quickly emptied by using the pressure difference.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A raw material proportioning device, comprising a proportioning tank (1) and a stirrer (2) disposed within the proportioning tank (1), wherein rotating the stirrer (2) can stir the mixture within the proportioning tank (1) and clean any adhering substances on the inner wall of the proportioning tank (1); characterized in that, It also includes an annular water spray pipe (3) and an air compressor (4); the annular water spray pipe (3) is located above the agitator (2) and is fixedly connected to the inner wall of the proportioning tank (1) in the circumferential direction. The annular water spray pipe (3) can spray water downward to wash away the deposits on the inner wall of the proportioning tank (1); the air compressor (4) is set outside the proportioning tank (1) and connected to the top of the proportioning tank (1). High-pressure air is delivered into the proportioning tank (1) through the air compressor (4) to accelerate the discharge of the mixture in the proportioning tank (1).

2. The raw material proportioning device according to claim 1, characterized in that, The stirrer (2) includes a rotating shaft (21), a stirring rod (22), and a double helix stirring blade (23); the rotating shaft (21) is vertically rotatably arranged inside the mixing tank (1); the middle part of the stirring rod (22) is connected to the rotating shaft (21), and the two ends of the stirring rod (22) are connected to the double helix stirring blade (23); the outer periphery of the double helix stirring blade (23) is attached to the inner wall of the mixing tank (1).

3. The raw material proportioning device according to claim 2, characterized in that, The upper end of the rotating shaft (21) extends out of the mixing tank (1) and is connected to a variable frequency motor (5).

4. The raw material proportioning device according to claim 1, characterized in that, The annular spray pipe (3) is connected to a water pump (6) located outside the mixing tank (1) on one side.

5. The raw material proportioning device according to claim 1, characterized in that, The mixing tank (1) is provided with a feed pipe (7) at the top, and a flow meter (71) is installed on the feed pipe (7).

6. The raw material proportioning device according to claim 1, characterized in that, The mixing tank (1) is provided with a discharge pipe (8) at the top, and a knife gate valve (81) is installed on the discharge pipe (8).

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