A refining device for desulfurized gypsum production

Abstract

The utility model belongs to the field of desulfurization gypsum production and processing equipment, propose a kind of refining device for desulfurization gypsum production, including base, frame, driving motor, powder box, transmission case, pulley, belt, powder component, feed bin and discharge hopper, the powder component includes fixed disc and rotating disc, two concentric distribution's fixed broken tooth and two concentric distribution's fixed grinding block are provided on the fixed disc, rotating disc is provided with two concentric interval distribution's rotating broken tooth with fixed broken tooth, rotating disc is provided with two concentric interval distribution's rotating grinding block with fixed grinding block in the position close to its circumference, transmission case includes the box cover being arranged at its side, the cooling tank recessed to the transmission face inside of belt is provided on the box cover, the end surface of cooling tank is provided with groove cover, the inside of groove cover and cooling tank is used to store water. The utility model design is reasonable, production efficiency is higher and comprehensive utilization is higher, is suitable for large-scale popularization.

Description

Technical Field

[0001] This utility model belongs to the field of desulfurized gypsum production and processing equipment, and in particular relates to a refining device for desulfurized gypsum production. Background Technology

[0002] Desulfurized gypsum, also known as flue gas desulfurization gypsum, is an industrial by-product gypsum obtained by desulfurizing and purifying flue gas produced from the combustion of sulfur-containing fuels. The primary application of desulfurized gypsum is in the building materials industry. After drying, calcination, and grinding, it is processed into building gypsum powder, which can be pressed into paper-faced gypsum board, fiber gypsum board, etc. It can also replace traditional cement mortar for wall plastering and floor leveling, producing gypsum mortar. Furthermore, it can directly replace natural gypsum as a cement retarder added to cement raw materials. For reuse, desulfurized gypsum is generally crushed and ground to facilitate weighing, batching, and thorough mixing with other materials.

[0003] Currently, to process desulfurized gypsum, large pieces can be crushed first and then ground into finer powder using a grinding mill. One such grinding mill, disclosed in CN212069065U, includes a shell, a cover plate, a rotating disc, and a filter screen. The shell is hinged to the cover plate, which has a feed disc at its center and multiple toothed seats around its periphery. The rotating disc is rotatably located inside the shell and has multiple teeth. However, due to the low density of the teeth, grinding the gypsum takes a long time, resulting in low fine powder output per unit time and low production efficiency. Furthermore, grinding mills often use pulleys and belt drives, leading to a long actual working time per cycle. The lifespan of the belt is significantly affected not only by the number of friction cycles but also by temperature. Providing adequate heat dissipation can extend the actual lifespan of the belt to some extent. Utility Model Content

[0004] This utility model addresses the technical problems existing in the above-mentioned grinding mills for gypsum grinding by proposing a fine grinding device for desulfurized gypsum production that is reasonably designed, has high production efficiency, and high comprehensive utilization rate.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a refining device for desulfurized gypsum production, including a base, a frame and a drive motor mounted on the base, a grinding box and a transmission box mounted on the frame, a pulley and belt internally connected to the drive motor in the transmission box, a grinding component internally mounted on the grinding box, and a feed hopper and a discharge hopper respectively mounted on the side and bottom of the grinding box. The grinding component includes a fixed disc and a rotating disc, with two concentrically distributed fixed crushing teeth on the fixed disc. The disc has two concentric rings of fixed grinding blocks near its circumference, which are arranged concentrically with the two rings of fixed crushing teeth. The rotating disc has two rings of rotating crushing teeth that are concentrically spaced with the fixed crushing teeth. The rotating disc also has two rings of rotating grinding blocks that are concentrically spaced with the fixed grinding blocks near its circumference. The transmission box includes a box cover on its side. The box cover has a cooling groove recessed towards the inner side of the belt transmission surface. The end face of the cooling groove is covered with a groove cover. The groove cover and the interior of the cooling groove are used to store water. The groove cover is provided with a water inlet and a vent.

[0006] Preferably, the number of fixed crushing teeth per revolution is at least 12 and they are spaced apart, and the number of rotating crushing teeth per revolution is at least 12 and they are spaced apart.

[0007] Preferably, the number of fixed grinding blocks per circle is at least 6 and they are spaced apart, and the number of rotating grinding blocks per circle is at least 6 and the interval angle between the rotating grinding blocks on the outermost circle is no more than 8 degrees.

[0008] Preferably, the cooling tank has a plurality of cooling balls arranged on the surface located inside the transmission box.

[0009] Preferably, the outer side of the tank cover is provided with several evenly distributed water tank fins, and the outer side of the transmission box and the position near the pulley are provided with transmission box fins.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This utility model provides a refining device for desulfurized gypsum production. It employs fixed and rotating crushing teeth to grind the decomposed gypsum, and fixed and rotating grinding blocks to further refine the ground gypsum. The grinding components have multiple working surfaces with high density, which improves powder output efficiency. Water-storage covers and trough covers on the transmission box provide water cooling, effectively cooling the atmosphere near the belt drive path and extending the belt's service life. This utility model features a reasonable design, high production efficiency, and high overall utilization rate, making it suitable for large-scale promotion. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 An exploded view of a refining device for desulfurized gypsum production provided in the embodiment; Figure 2 A perspective view of a refining device for desulfurized gypsum production provided in the embodiment; Figure 3 A side view of a refining device for desulfurized gypsum production provided in an embodiment; Figure 4 A front view of a refining device for desulfurized gypsum production provided in an embodiment; Figure 5 A cross-sectional view along the HH direction of a refining device for desulfurized gypsum production provided in an embodiment; In the above figures: 1. Base; 2. Frame; 3. Drive motor; 4. Grinding box; 5. Transmission box; 51. Box cover; 52. Cooling tank; 53. Tank cover; 54. Water inlet; 55. Breathing port; 56. Cooling ball; 57. Water tank fins; 58. Transmission box fins; 6. Pulley; 7. Belt; 8. Grinding component; 81. Fixed disc; 82. Rotating disc; 83. Fixed crushing teeth; 84. Fixed grinding block; 85. Rotating crushing teeth; 86. Rotating grinding block; 9. Feed hopper; 10. Discharge hopper. Detailed Implementation

[0013] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0014] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0015] Examples, such as Figures 1-5As shown, this utility model provides a refining device for desulfurized gypsum production, including a base 1. A frame 2 and a drive motor 3 are mounted on the base 1. A grinding chamber 4 and a transmission box 5 are mounted on the frame 2. The transmission box 5 contains a pulley 6 and a belt 7 that are connected to the drive motor 3. A grinding component 8 is located inside the grinding chamber 4. A feed hopper 9 and a discharge hopper 10 are respectively located on the side and bottom of the grinding chamber 4. The grinding component 8 includes a fixed disk 81 and a rotating disk 82. The grinding chamber 4 includes a chamber body and a front cover. The front cover is rotatably connected to the chamber body via a hinge for easy opening and closing. A locking bolt is provided on one side of the front cover for connecting to a locking seat on the chamber body. The fixed disk 81 is fixedly mounted on the inside of the front cover by means such as welding or screws. The drive motor 3 drives the pulley 6 and belt 7 to cause relative movement between the rotating disk 82 and the fixed disk 81. Based on this, the fixed disk 81 provided by this utility model is provided with two concentric rings of fixed crushing teeth 83. The fixed disk 81 is provided with two rings of fixed grinding blocks 84 concentrically distributed with the two rings of fixed crushing teeth 83 near its circumference. The fixed crushing teeth 83 and the fixed grinding blocks 84 are connected to the fixed disk 81 by welding. The rotating disk 82 is provided with two rings of rotating crushing teeth 85 concentrically spaced with the fixed crushing teeth 83. The rotating disk 82 is provided with two rings of rotating grinding blocks 86 concentrically spaced with the fixed grinding blocks 84 near its circumference. The rotating crushing teeth 85 and the rotating grinding blocks 86 are connected to the rotating disk 82 by welding. The transmission box 5 includes a box cover 51 provided on its side. The box cover 51 is provided with a cooling groove 52 recessed towards the transmission surface of the belt 7. The end face of the cooling groove 52 is provided with a groove cover 53. The groove cover 53 and the interior of the cooling groove 52 are used to store water. The groove cover 53 is provided with a water inlet 54 and a vent 55.

[0016] Specifically, desulfurized gypsum blocks enter the meshing space between fixed crushing teeth 83 and rotating crushing teeth 85 from the feed hopper 9. The fixed crushing teeth 83 and rotating crushing teeth 85 grind the desulfurized gypsum through relative motion. The crushed small pieces enter the grinding circumference of fixed grinding blocks 84 and rotating grinding blocks 86 from the outermost rotating crushing teeth 85 under the action of centrifugal force, compression, and gravity. The fixed grinding blocks 84 and rotating grinding blocks 86 have relative motion driven by the turntable, which can grind the crushed gypsum small pieces into finer pieces. After the gypsum small pieces are ground into finer pieces on the grinding surface, they can fall from the gaps between the outermost rotating grinding blocks 86. A filter screen can be screwed or directly welded onto the outer circumference of the outermost rotating grinding blocks 86. The ground powder is also screened as the filter screen rotates, so that the ground powder meets the grinding requirements. The grinding component provided by this utility model provides an effective crushing and grinding working surface through the fixed crushing tooth 83 and the rotating crushing tooth 85, and the fixed grinding block 84 and the rotating grinding block 86. The distribution direction is multiple and the distribution density is high, which is conducive to improving the discharge efficiency of powder.

[0017] Furthermore, the cover 51 and groove cover 53 installed on the transmission box 5 can form a water storage space when closed. The cover 51 can be connected to the side of the transmission box 5 by screws. The actual mounting surface of the cooling groove 52 of the cover 51 is located within the transmission path of the transmission belt. The water in the cooling groove 52 can directly cool the metal transmission box 5 and indirectly cool the air near the transmission path of the belt 7, which helps to extend the actual service life of the belt 7 and improve the overall utilization rate of the equipment. The water inlet 54 is used to replenish water into the water storage space. The water inlet is normally plugged to prevent impurities from entering. The vent 55 is used to balance the pressure inside the water storage space.

[0018] To improve the crushing performance of this equipment for desulfurized gypsum, the present invention provides at least 12 fixed crushing teeth 83 per ring, which are spaced apart. The larger the ring diameter, the more the number of fixed crushing teeth 83 can be increased. The number of rotating crushing teeth 85 per ring is at least 12, which are spaced apart. Similarly, the larger the ring diameter, the more the number of rotating crushing teeth 85 can be increased. This increases the biting direction and biting density of the fixed crushing teeth 83 and rotating crushing teeth 85 on the desulfurized gypsum blocks, thereby improving the crushing efficiency.

[0019] To improve the grinding performance of the grinding component 8, this invention provides at least six fixed grinding blocks 84 per ring, spaced apart, and at least six rotating grinding blocks 86 per ring, with the spacing angle between the outermost rotating grinding blocks 86 not exceeding 8 degrees. The arc lengths of the fixed grinding blocks 84 and rotating grinding blocks 86 are related to the spacing angle between adjacent blocks of the same structure. The positions of the arc surfaces opposite each other constitute an effective grinding working surface. Where there are gaps, the blocks can be moved to the next ring of grinding working surfaces. The spacing density of the fixed grinding blocks 84 in the inner ring can be appropriately larger, while the spacing density of the rotating grinding blocks 86 in the outer ring is the smallest. Through the intermittent grinding surface, small pieces of gypsum can be gradually ground finer, ultimately ensuring that the powder meets the grinding requirements.

[0020] To improve the cooling performance of the transmission box 5, the cooling tank 52 provided by this invention has a number of cooling balls 56 arranged on the surface inside the transmission box 5. The cooling balls 56 are arranged in a rectangular array on the surface of the cooling tank 52. This not only provides a larger heat dissipation working surface, but also prevents the transmission belt from generating a continuous friction surface with the surface of the cooling tank 52. It can maintain a small vertical gap with the transmission belt, which is beneficial to ensuring the actual service life of the transmission belt and the cooling performance of the atmosphere inside the transmission box 5.

[0021] Furthermore, the outer side of the groove cover 53 provided by this utility model is provided with a plurality of evenly distributed water tank fins 57, and the outer side of the transmission box 5 and the position near the pulley 6 are provided with transmission box fins 58. Among them, the transmission box fins 58 located in the middle position of the transmission box 5 are arranged side by side, while the transmission box fins 58 near the pulley 6 are arranged radially, avoiding the position on the transmission box 5 where the bearing seat is installed. The water tank fins 57 and the transmission box fins 58 can increase the heat dissipation surface, which is beneficial to improving the overall heat dissipation performance of the transmission box 5.

[0022] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A refining device for desulfurized gypsum production, comprising a base, a frame and a drive motor mounted on the base, a grinding box and a transmission box mounted on the frame, a pulley and a belt internally connected to the drive motor, a grinding component internally mounted on the grinding box, and a feed hopper and a discharge hopper respectively mounted on the side and bottom of the grinding box, characterized in that... The grinding component includes a fixed disk and a rotating disk. The fixed disk has two concentric rings of fixed crushing teeth and two concentric rings of fixed grinding blocks near its circumference. The rotating disk has two concentric rings of rotating crushing teeth and two concentric rings of rotating grinding blocks near its circumference. The transmission box includes a box cover on its side. The box cover has a cooling groove recessed towards the inner side of the belt drive surface. The end face of the cooling groove is covered with a groove cover. The groove cover and the interior of the cooling groove are used to store water. The groove cover is provided with a water inlet and a vent.

2. The refining device for desulfurized gypsum production according to claim 1, characterized in that, The number of fixed crushing teeth per revolution is at least 12 and they are spaced apart, and the number of rotating crushing teeth per revolution is at least 12 and they are spaced apart.

3. The refining device for desulfurized gypsum production according to claim 2, characterized in that, The number of fixed grinding blocks in each circle is at least 6 and they are spaced apart. The number of rotating grinding blocks in each circle is at least 6 and the interval angle between the rotating grinding blocks on the outermost circle is no more than 8 degrees.

4. The refining device for desulfurized gypsum production according to claim 3, characterized in that, The cooling tank has several cooling balls arranged on the surface located inside the transmission box.

5. A refining device for desulfurized gypsum production according to claim 4, characterized in that, The outer side of the trough cover is provided with several evenly distributed water tank fins, and the outer side of the transmission box and the position near the pulley are also provided with transmission box fins.

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