Material screening device for stirring kettle

Abstract

The utility model discloses a material screening device for a stirring kettle. The material screening device is characterized by further comprising a grid-shaped filtering cavity arranged outside a stirring shaft and a feeding device capable of moving up and down, through the arrangement of the grid-shaped filtering cavity, slurry which is not screened enters the filtering cavity to be screened, large-particle impurities are left in the filtering cavity, the filtering cavity needs to be regularly detached from the stirring kettle body to be cleaned, other slurry flows out of the filtering cavity and enters the inner cavity of the stirring kettle body, and the slurry is filtered through the stirring frame. Screened slurry is uniformly stirred and then discharged from the discharge hole, so that screening and stirring work is completed in the same stirring kettle, the functions of the stirring kettle are increased, the stirring work efficiency is improved, the slurry loss is reduced, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mixing tank technology, specifically a material screening device for mixing tanks. Background Technology

[0002] Stirred tanks are commonly used equipment in chemical production processes. Different types of slurries need to be mixed and stirred during chemical processes. To improve the reaction rate, large particles of impurities in the slurry entering the stirred tank need to be screened in advance. Existing screening methods involve screening with separate screening equipment before the slurry enters the stirred tank for stirring and reaction. This method involves repeated entry of the medium into the screening equipment and the stirred tank, resulting in slow working efficiency. Moreover, some slurry is lost during the entry and exit process, thus increasing costs. Therefore, a material screening device for stirred tanks is proposed. Utility Model Content

[0003] The main purpose of this utility model is to provide a solution that can effectively address the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a material screening device for a mixing tank, comprising a mixing tank body, a motor disposed on the top of the mixing tank body, a stirring shaft connected to the motor, a plurality of stirring blades connected to the stirring shaft, and a discharge hole disposed on the bottom of the mixing tank body, characterized in that: it further comprises a grid-shaped filter chamber disposed outside the stirring shaft and a feeding device that can move up and down.

[0005] Preferably, it also includes a stirring frame disposed on the stirring shaft and closely attached to the inner wall of the stirring vessel body.

[0006] Preferably, the stirring frame is provided with a plurality of stirring rods.

[0007] Preferably, the stirring rod is provided with a plurality of stirring paddles perpendicular to the stirring rod and fixing nuts provided on the stirring rod for fixing the stirring paddles.

[0008] Preferably, the feeding device includes a vertically movable feeding pipe, a sleeve disposed outside the feeding pipe, a cylinder disposed on the top of the mixing vessel body and movably connected to the feeding pipe, and a connecting plate disposed on the top of the feeding pipe and movably connected to the cylinder.

[0009] Preferably, the filter chamber is provided with strip-shaped filter holes.

[0010] This invention has the following advantages: By setting up a grid-like filter chamber, unscreened slurry enters the filter chamber for screening, leaving larger impurities inside. The filter chamber needs to be periodically removed from the mixing vessel body for cleaning. Other slurry flows out of the filter chamber and into the inner cavity of the mixing vessel body. The screening slurry is then uniformly stirred by the stirring frame and discharged through the outlet. Screening and stirring are completed within the same mixing vessel, increasing the mixing vessel's functionality, improving stirring efficiency, and reducing slurry loss, thereby lowering costs. Furthermore, the feeding device prevents the slurry from being directly stirred without screening within the filter chamber, leading to a substandard final product. The feeding device extends into the filter chamber for feeding. After feeding, the feeding device extends upwards to prevent collisions with the stirring frame during rotation, which could stop the stirring process. Extending the feeding device into the filter chamber also reduces the impact of falling slurry from a high feeding height, minimizing damage to the filter chamber and ensuring a strong connection between the filter chamber and the mixing vessel body.

[0011] By setting the sleeve, the outer diameter of the sleeve is larger than the diameter of the feed hole on the mixing vessel body that matches the feed pipe. Therefore, when the sleeve extends into the filter chamber along with the feed pipe, the extension of the feed pipe into the filter chamber stops when the sleeve contacts the top of the mixing vessel body, thus limiting the depth of the feed pipe entering the filter chamber. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the filter chamber of this utility model;

[0014] Figure 3 This is a schematic diagram of the feeding device structure of this utility model.

[0015] Legend: 1. Stirring vessel body; 2. Motor; 3. Stirring shaft; 4. Stirring blades; 5. Discharge hole; 6. Filter chamber; 61. Filter hole; 7. Feeding device; 71. Feeding pipe; 72. Sleeve; 73. Cylinder; 74. Connecting plate; 8. Stirring frame; 81. Stirring rod; 82. Stirring paddle; 83. Fixing nut. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] like Figure 1-3As shown, a material screening device for a stirred tank includes a stirred tank body 1, a motor 2 mounted on the top of the stirred tank body 1, a stirring shaft 3 connected to the motor 2, several stirring blades 4 connected to the stirring shaft 3, and a discharge hole 5 located at the bottom of the stirred tank body 1. The device is characterized by: a grid-shaped filter chamber 6 located outside the stirring shaft 3 and a vertically movable feeding device 7; and a stirring frame 8 mounted on the stirring shaft 3 and closely attached to the inner wall of the stirred tank body 1. Through the grid-shaped filter chamber 6, unscreened slurry enters the filter chamber 6 for screening, while larger impurities remain in the filter chamber 6. The filter chamber 6 needs to be periodically removed from the stirred tank body 1 for cleaning. Other slurry flows out of the filter chamber 6 and into the inner cavity of the stirred tank body 1, where it is further screened by the stirring frame 8. The slurry, after being screened and stirred evenly, is discharged from the discharge hole 5. Screening and stirring are completed in the same mixing vessel, which increases the function of the mixing vessel, improves the stirring efficiency, and reduces slurry loss, thereby reducing costs. With the setting of the feeding device 7, in order to prevent the slurry from being stirred directly without entering the filtration chamber 6 for screening, resulting in unqualified final product, the feeding device 7 needs to be extended into the filtration chamber 6 for feeding. After feeding is completed, the feeding device 7 is extended upward to avoid collision between the stirring frame 8 and the feeding device 7 when it rotates, which would cause the stirring to stop. At the same time, extending into the filtration chamber 6 for feeding can also reduce the damage to the filtration chamber 6 caused by the impact force of the slurry falling from too high a feeding height, which would affect the firmness of the connection between the filtration chamber 6 and the mixing vessel body 1.

[0018] In one embodiment, the stirring frame 8 is provided with a plurality of stirring rods 81; the stirring rods 81 are provided with a plurality of stirring paddles 82 perpendicular to the stirring rods 81 and fixing nuts 83 provided on the stirring rods 81 for fixing the stirring paddles 82.

[0019] In one embodiment, the feeding device 7 includes a vertically movable feeding pipe 71, a sleeve 72 disposed outside the feeding pipe 71, a cylinder 73 disposed on the top of the mixing vessel body 1 and movably connected to the feeding pipe 71, and a connecting plate 74 disposed on the top of the feeding pipe 71 and movably connected to the cylinder 73. Due to the arrangement of the sleeve 72, the outer diameter of the sleeve 72 is larger than the diameter of the feeding hole on the mixing vessel body 1 that matches the feeding pipe 71. Therefore, when the sleeve 72 extends into the filter chamber 6 along with the feeding pipe 71, the extension of the feeding pipe 71 into the filter chamber 6 is stopped until the sleeve 72 contacts the top of the mixing vessel body 1, thereby limiting the depth of the feeding pipe 71 entering the filter chamber 6.

[0020] In one embodiment, the filter chamber 6 is provided with strip-shaped filter holes 61.

[0021] In use, the piston rod in the drive cylinder 73 is first retracted downwards into the cylinder 73, causing the connecting plate 74 to drive the feed pipe 71 downwards into the filter chamber 6 until the sleeve 72 contacts the top surface of the mixing vessel body 1. After the slurry enters the filter chamber 6, the piston rod in the drive cylinder 73 is pushed upwards, causing the connecting plate 74 to drive the feed pipe 71 upwards and leave the filter chamber 6. Then, the motor 2 is driven to rotate the stirring shaft 3, which in turn drives the stirring blades 4 to rotate, screening the slurry from the filter holes 61 in the filter chamber 6 into the inner cavity of the mixing vessel body 1. Large particles of impurities in the slurry remain in the filter chamber 6. At the same time, the stirring shaft 3 drives the stirring frame 8 to rotate. The stirring rod 81 and stirring paddle 82 on the stirring frame 8 rotate in the inner cavity of the mixing vessel body 1 through the stirring frame 8, stirring the filtered slurry. After stirring, the slurry is discharged from the mixing vessel body 1 through the discharge hole 5. After stirring is completed, the large particles of impurities are removed by opening the mixing vessel body 1 and removing the filter chamber 6 for cleaning.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A material screening device for a stirred tank, comprising a stirred tank body (1), a motor (2) disposed on the top of the stirred tank body (1), a stirring shaft (3) connected to the motor (2), a plurality of stirring blades (4) connected to the stirring shaft (3), and a discharge hole (5) disposed on the bottom of the stirred tank body (1), characterized in that: It also includes a grid-like filter chamber (6) located outside the stirring shaft (3) and a feed device (7) that can move up and down.

2. The material screening device for a stirred tank according to claim 1, characterized in that: It also includes a stirring frame (8) that is set on the stirring shaft (3) and closely attached to the inner wall of the stirring vessel body (1).

3. The material screening device for a stirred tank according to claim 2, characterized in that: The stirring frame (8) is provided with several stirring rods (81).

4. The material screening device for a stirred tank according to claim 3, characterized in that: The stirring rod (81) is provided with a plurality of stirring paddles (82) perpendicular to the stirring rod (81) and fixing nuts (83) provided on the stirring rod (81) for fixing the stirring paddles (82).

5. A material screening device for a stirred tank according to claim 1, characterized in that: The feeding device (7) includes a feed pipe (71) that can move up and down, a sleeve (72) set outside the feed pipe (71), a cylinder (73) set on the top of the mixing tank body (1) and movably connected to the feed pipe (71), and a connecting plate (74) set on the top of the feed pipe (71) and movably connected to the cylinder (73).

6. The material screening device for a stirred tank according to claim 1, characterized in that: The filter chamber (6) is provided with strip-shaped filter holes (61).

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