High-activity calcium hydroxide grinding mechanism

Abstract

The utility model discloses a high-activity calcium hydroxide grinding mechanism, which comprises a feeding device and a discharging device, a conveying device is connected between the feeding device and the discharging device, the feeding device comprises a grinding box and a fixed base, a grinding assembly is arranged in the grinding box, a stirring assembly is arranged in the discharging device, and the conveying device is connected with the fixed base. A rotating shaft is rotatably arranged above the fixed base, the rotating shaft extends upwards into the grinding box, the rotating shaft is sequentially provided with a first crushing cutterhead, a second crushing cutterhead, a third crushing cutterhead, a grinding disc and a pushing disc from top to bottom, and a grinding gap is reserved between the grinding disc and the side wall of the grinding box; a strip-shaped protrusion is arranged on the upper surface of the pushing disc, a driving motor is arranged on the side edge of the fixed base, and a transmission belt is connected between the driving motor and the rotating shaft. According to the quick lime crushing and grinding device, quick lime can be efficiently crushed and ground through the combination of the multiple stages of crushing cutter heads and the grinding disc, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-activity calcium hydroxide, and specifically relates to a high-activity calcium hydroxide grinding mechanism. Background Art

[0002] High-activity calcium hydroxide is also called high-specific surface area calcium hydroxide. High-specific surface area calcium hydroxide has the characteristics of being porous, highly active, well dispersed, and highly utilized. Its specific surface area is 2-3 times that of ordinary calcium hydroxide, and is widely used in the flue gas desulfurization industry. During the production of high-activity calcium hydroxide, the calcined calcium oxide needs to be cooled to room temperature, and then the cooled calcium oxide is crushed, usually using a mill or other crushing equipment to grind it into the required particle size.

[0003] Chinese patent application number 2022230432413 discloses a grinding mill for preparing calcium hydroxide powder, which relates to the technical field of grinding mills. In order to solve the problem that the existing device is a vertical structure for discharging materials from top to bottom, the calcium hydroxide powder accumulates at the bottom discharge port under the blocking effect of the valve after grinding, which easily causes the discharge port to be blocked and causes inconvenience in discharging. A transmission shaft is installed on both sides of the grinding box; a belt protection cover is installed on the outer wall of the support plate on one side, the transmission shaft on one side of the grinding box passes through the support plate and extends to the inside of the belt protection cover, and is installed with a first pulley, a second motor is installed on the outer wall of the lower end of the belt protection cover, the output end of the second motor passes through and extends to the inside of the belt protection cover, and is installed with a second pulley, and the first pulley and the second pulley are connected by belt transmission; an inlet and outlet valve is installed on the outer wall of the upper end of the grinding box.

[0004] The above-mentioned patented solution uses a tumbling grinding method to improve the pulverizing effect. However, after calcium oxide is cooled to room temperature, it will gradually form solid crystals due to moisture absorption reaction. If the corresponding rolling roller or crushing roller is used directly for grinding, it will cause increased wear of the grinding tool and cause the particle size distribution of the product to be uneven, and some particles may be too large or too small. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a high-activity calcium hydroxide grinding mechanism, comprising a feeding device and a discharging device, a conveying device is connected between the feeding device and the discharging device, the feeding device comprises a grinding box and a fixed base, a grinding assembly is provided in the grinding box, a stirring assembly is provided in the discharging device, a rotating shaft is rotatably provided above the fixed base, the rotating shaft extends upward into the grinding box, the rotating shaft is provided with a first crushing blade disc, a second crushing blade disc, a third crushing blade disc, a grinding disc and a pushing disc from top to bottom, a grinding gap is left between the grinding disc and the side wall of the grinding box, a strip protrusion is provided on the upper surface of the pushing disc, a driving motor is provided on the side of the fixed base, and a transmission belt is connected between the driving motor and the rotating shaft.

[0006] Preferably, the discharging device includes a stirring kettle, a connecting seat is provided above the stirring kettle, a stirring motor is connected above the connecting seat, the output end of the stirring motor extends downward into the stirring kettle, and the stirring assembly includes a stirring shaft, the stirring shaft is connected to the output end of the stirring motor, and a stirring blade is connected to the stirring shaft.

[0007] Preferably, a sieve plate is provided at the bottom of the stirring kettle, and a plurality of sieve holes are provided on the sieve plate.

[0008] Preferably, the conveying device includes a feed pipe, a feed auger and a feed motor, one end of the feed pipe is connected to the bottom side of the grinding box, the other end of the feed pipe is connected to the connecting seat, a feed auger is rotatably provided inside the feed pipe, the bottom of the feed pipe is connected to the feed motor, and the feed motor is connected to the feed auger.

[0009] Preferably, a feeding funnel is connected above the grinding box.

[0010] The advantages of the utility model are:

[0011] 1. In this scheme, by providing the first, second and third crushing discs, the quicklime is fully crushed before entering the grinding disc. This multi-stage crushing design effectively improves the crushing efficiency and reduces the load of the subsequent grinding process, thereby extending the service life of the grinding disc and equipment and ensuring uniform particle size distribution of the product after grinding.

[0012] 2. In this solution, a stirring component is provided in the discharging device. Stirring after grinding can ensure that the particles of the product after grinding are more evenly distributed, thereby improving the quality and consistency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2This is a structural diagram of the feeding device of the utility model.

[0015] Figure 3 This is a structural diagram of the grinding assembly of the utility model.

[0016] Figure 4 This is a structural diagram of the stirring component of the utility model.

[0017] In the figure: 1 grinding box, 2 fixed base, 3 rotating shaft, 4 first crushing knife disc, 5 second crushing knife disc, 6 third crushing knife disc, 7 grinding disc, 8 pushing disc, 9 grinding gap, 10 strip protrusion, 11 driving motor, 12 transmission belt, 13 stirring kettle, 14 connecting seat, 15 stirring motor, 16 stirring shaft, 17 stirring blade, 18 sieve disc, 19 sieve hole, 20 feeding pipe, 21 feeding auger, 22 feeding motor, 23 feeding funnel. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0020] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connection" 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 a connection between the two elements. At the same time, when an element is referred to as "fixed on" or "provided on" another element, it can be directly on the other element or there may be a central element at the same time. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be a central element at the same time. When an element is referred to as being "fixedly connected to" another element, it can be a common fixed connection method such as welding, bolting, or gluing. In short, 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. Example 1

[0021] like Figure 1-4As shown, a high-activity calcium hydroxide grinding mechanism includes a feeding device and a discharging device, a conveying device is connected between the feeding device and the discharging device, the feeding device includes a grinding box 1 and a fixed base 2, a grinding assembly is provided in the grinding box 1, a feeding funnel 23 is connected above the grinding box 1, and the cooled calcium oxide enters the grinding box 1 from the feeding funnel 23, and the feeding funnel 23 can prevent the splashing and scattering of the raw materials, thereby protecting the working environment and the safety of the operator. A rotating shaft 3 is rotatably provided above the fixed base 2, and the rotating shaft 3 extends upward into the grinding box 1. The rotating shaft 3 is provided with a first crushing disc 4, a second crushing disc 5, a third crushing disc 6, a grinding disc 7 and a push disc 8 from top to bottom in sequence, a grinding gap 9 is left between the grinding disc 7 and the side wall of the grinding box 1, and a strip protrusion 10 is provided on the upper surface of the push disc 8, and a driving motor 11 is provided on the side of the fixed base 2, and a transmission belt 12 is connected between the driving motor 11 and the rotating shaft 3.

[0022] Combination Figure 3 , the rotating shaft 3 can be driven to rotate by the driving motor 11 and the transmission belt 12, and the rotating shaft 3 drives the first crushing blade 4, the second crushing blade 5, and the third crushing blade 6 to crush the calcium oxide entering. The crushed calcium oxide enters the grinding gap 9 and is further ground by the rotation of the grinding disc 7. By providing the first, second and third crushing blades 6, the calcium oxide has been fully crushed before entering the grinding disc 7. This multi-stage crushing design effectively improves the crushing efficiency and reduces the load of the subsequent grinding process, thereby extending the service life of the grinding disc 7 and the equipment. Moreover, since the calcium oxide has been fully crushed in the multi-stage crushing process, the power required by the grinding disc 7 can be reduced, thereby saving energy consumption and reducing production costs. A grinding gap 9 is left between the grinding disc 7 and the side wall of the grinding box 1. The size of the grinding gap 9 is limited to limit the particle size and quality of the calcium oxide during the grinding process. After the grinding is completed, the calcium oxide powder falls to the surface of the push disc 8, and then under the centrifugal force formed by the swing of the push disc 8, the calcium oxide powder is thrown into the conveying device.

[0023] Combination Figure 2 The conveying device includes a conveying pipe 20, a conveying auger 21 and a conveying motor 22. One end of the conveying pipe 20 is connected to the bottom side of the grinding box 1, and the other end of the conveying pipe 20 is connected to the connecting seat 14. The conveying auger 21 is provided for rotation inside the conveying pipe 20. The bottom of the conveying pipe 20 is connected to the conveying motor 22, and the conveying motor 22 is connected to the conveying auger 21. The conveying motor 22 can be connected to the end of the conveying auger 21 through a gear or a transmission belt 12, driving the conveying auger 21 to rotate and convey the material. The conveying auger 21 is a screw conveyor, which is a well-known technology in the art and will not be described in detail in this embodiment. The conveying auger 21 conveys the material to the discharging device.

[0024] Combination Figure 4, a stirring assembly is provided in the discharging device, the discharging device includes a stirring kettle 13, a connecting seat 14 is provided above the stirring kettle 13, and the side of the stirring kettle 13 is supported by a supporting frame. A stirring motor 15 is connected above the connecting seat 14, and the output end of the stirring motor 15 extends downward into the stirring kettle 13. The stirring assembly includes a stirring shaft 16, and a stirring blade 17 is connected to the stirring shaft 16. The stirring motor 15 drives the stirring shaft 16 to rotate, so that the stirring blade 17 can stir the ground calcium oxide. Stirring after grinding can ensure that the particle distribution of the product is more uniform, thereby improving the quality and consistency of the product. After stirring, the properties and characteristics of the product can be better improved, such as the regulation of particle size, shape, density, etc., so that the product is more in line with application requirements.

[0025] A sieve plate 18 is provided at the bottom of the stirring tank 13, and a plurality of sieve holes 19 are provided on the sieve plate 18. The sieve plate 18 can screen foreign matter and impurities in the product, thereby improving the purity and quality of the product and ensuring the safety and reliability of the product. Moreover, the particles of the product screened by the sieve plate 18 are more evenly distributed, which can reduce the wear of subsequent equipment and further extend the service life of the equipment.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-activity calcium hydroxide grinding mechanism, characterized in that: The invention comprises a feeding device and a discharging device, wherein a conveying device is connected between the feeding device and the discharging device, the feeding device comprises a grinding box (1) and a fixed base (2), the grinding box (1) is provided with a grinding assembly, the discharging device is provided with a stirring assembly, a rotating shaft (3) is rotatably provided above the fixed base (2), the rotating shaft (3) extends upward into the grinding box (1), the rotating shaft (3) is provided with a first crushing blade disc (4), a second crushing blade disc (5), a third crushing blade disc (6), a grinding disc (7) and a pushing disc (8) in sequence from top to bottom, a grinding gap (9) is reserved between the grinding disc (7) and the side wall of the grinding box (1), a strip-shaped protrusion (10) is provided on the upper surface of the pushing disc (8), a driving motor (11) is provided on the side of the fixed base (2), and a transmission belt (12) is connected between the driving motor (11) and the rotating shaft (3).

2. The high-activity calcium hydroxide grinding mechanism according to claim 1, characterized in that: The discharging device comprises a stirring kettle (13), a connecting seat (14) is provided above the stirring kettle (13), a stirring motor (15) is connected above the connecting seat (14), an output end of the stirring motor (15) extends downward into the stirring kettle (13), and the stirring assembly comprises a stirring shaft (16), the stirring shaft (16) is connected to the output end of the stirring motor (15), and a stirring blade (17) is connected to the stirring shaft (16).

3. The high-activity calcium hydroxide grinding mechanism according to claim 2, characterized in that: A sieve plate (18) is provided at the bottom of the stirring kettle (13), and a plurality of sieve holes (19) are provided on the sieve plate (18).

4. The high-activity calcium hydroxide grinding mechanism according to claim 3 is characterized in that: The conveying device comprises a conveying pipe (20), a conveying auger (21) and a conveying motor (22); one end of the conveying pipe (20) is in communication with the bottom side of the grinding box (1); the other end of the conveying pipe (20) is in communication with the connecting seat (14); a conveying auger (21) is rotatably arranged inside the conveying pipe (20); the bottom of the conveying pipe (20) is connected to the conveying motor (22); and the conveying motor (22) is connected to the conveying auger (21).

5. The high-activity calcium hydroxide grinding mechanism according to claim 4 is characterized in that: A feeding funnel (23) is connected above the grinding box (1).

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