Vertical mill for stable crushing in preparation of calcium hydroxide

Abstract

The utility model relates to the field of chemical manufacturing, in particular to a stable crushing vertical mill for preparing calcium hydroxide. A stable crushing vertical mill for calcium hydroxide preparation comprises a workbench, a working bin, two mounting shells, a high-speed motor, a grinding roller, a grinding disc, a screen, a supporting frame, a gear motor, a connecting rod and the like, the working bin is mounted on the workbench, the two mounting shells are mounted on the working bin, and the high-speed motor is mounted in the mounting shells; a connecting rod is installed on an output shaft of the high-speed motor, a grinding roller is installed on the connecting rod, a supporting frame is installed on the inner wall of the working bin, a gear motor is installed on the top of the supporting frame, a grinding disc is connected to an output shaft of the gear motor, and an annular screen is installed on the grinding disc. The ground calcium hydroxide is sorted through the screen, and then the calcium hydroxide which is not ground thoroughly is transferred to a grinding position through the scraper, so that an original separator and a high-power fan are replaced, the structure of grinding equipment is greatly simplified, and the difficulty of maintenance work of the equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the field of chemical manufacturing, in particular to a vertical mill for preparing and stably crushing calcium hydroxide. Background Art

[0002] Calcium hydroxide is an inorganic compound, commonly known as slaked lime or hydrated lime. It is a white powdery solid with a fine texture and is slightly soluble in water. Its solubility decreases with increasing temperature. After calcium hydroxide is added to water, it will be divided into two layers, the upper aqueous solution is called clear lime water, and the lower suspension is called lime milk or lime slurry. Calcium hydroxide is widely used in industry, such as in the manufacture of bleaching powder, hard water softeners, disinfectants and insecticides, depilatories for leather making, sugar refining, and building materials. In the construction industry, calcium hydroxide is often used as a building material, and is also used as a bactericide and chemical raw material. Calcium hydroxide has a variety of preparation methods. During the preparation process, block calcium hydroxide will be produced. Block calcium hydroxide is not conducive to use, so special equipment is used to grind the block calcium hydroxide into powder.

[0003] Existing grinding equipment needs to use a separator when collecting calcium hydroxide powder. Its working process requires a high-power fan to blow the calcium hydroxide powder into the separator, filter out the particulate matter in the calcium hydroxide powder through the separator, and then extract the calcium hydroxide powder through the exhaust duct. This makes the structure of the entire device very complicated, increases the difficulty of equipment maintenance, and also increases the cost of the equipment, which increases the company's operating costs and affects the company's profitability. Utility Model Content

[0004] In order to overcome the shortcomings of existing calcium hydroxide grinding equipment that requires a complex mechanism to collect calcium hydroxide powder, thereby increasing the difficulty of equipment maintenance and the cost of equipment, the technical problem to be solved by the utility model is to provide a vertical mill for stable crushing of calcium hydroxide preparation which has a simple structure and is easy to maintain.

[0005] In order to solve the above technical problems, the utility model provides a vertical mill for preparing stable crushing of calcium hydroxide, comprising a workbench, a working bin, a top cover, a mounting shell, a high-speed motor, a grinding roller, a grinding disc, a screen, a scraper, a support frame, a reduction motor, a connecting rod and a feed pipe. The workbench is installed with the working bin, the lower part of the working bin is funnel-shaped, the lower part of the working bin is provided with a discharge port, the top of the working bin is provided with a top cover, the top cover is provided with a feed pipe, two mounting shells are circumferentially installed on the upper edge of the working bin, a high-speed motor is installed in the mounting shell, a connecting rod is installed on the output shaft of the high-speed motor, a grinding roller is installed on the connecting rod, a support frame is installed on the inner wall of the working bin, a reduction motor is installed on the top of the support frame, a grinding disc is connected to the output shaft of the reduction motor, the middle part of the grinding disc is recessed downward, the grinding roller is located above the grinding disc, the gap between the grinding disc and the grinding roller is less than 2 mm, an annular screen is installed on the grinding disc, a scraper is installed on the inner wall of the working bin, the scraper is located above the screen, the scraper is inclined, and the scraper can scrape the particles on the screen.

[0006] Preferably, an observation window is also included, and the working chamber is equipped with an observation window.

[0007] Preferably, a guide plate is also included. The bottom of the grinding disc is equipped with the guide plate, and the guide plate is narrow at the top and wide at the bottom.

[0008] Preferably, a cover plate is further included, and the cover plate is hinged on the mounting shell.

[0009] Preferably, a water tank and a nozzle are also included. The water tank is installed on the top of the cover plate. The water tank is connected to the nozzle through a pipeline, and the nozzle is located below the top cover.

[0010] Preferably, a protective shell is also included, and the supporting frame is installed with the protective shell, and the protective shell can cover the reduction motor.

[0011] The beneficial effects of the utility model are as follows: the ground calcium hydroxide is sorted through a sieve, and then the unground calcium hydroxide is transferred to the grinding position by a scraper, thereby replacing the original separator and high-power fan, greatly simplifying the structure of the grinding equipment without affecting the function, reducing the difficulty of equipment maintenance work, and at the same time reducing the cost of the calcium hydroxide grinding device, thereby improving the risk resistance of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0013] Figure 2 It is a cross-sectional view of the utility model.

[0014] Figure 3 It is a three-dimensional structural schematic diagram of the grinding disc, reduction motor and guide disc of the utility model.

[0015] Figure 4 It is a partial cross-sectional view of the utility model.

[0016] Figure 5 A three-dimensional structural schematic diagram of the top cover, water tank and spray head of the utility model.

[0017] The marks in the attached drawings are: 1-workbench, 2-work chamber, 3-top cover, 4-installation shell, 5-observation window, 6-water tank, 7-high-speed motor, 8-grinding roller, 9-grinding disc, 10-screen, 11-scraper, 12-support frame, 13-reduction motor, 14-guide plate, 15-cover plate, 16-connecting rod, 17-nozzle, 18-protective shell, 19-feed pipe. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Example 1

[0020] A vertical mill for preparing stable crushing of calcium hydroxide, such as Figure 1-Figure 4 As shown, it includes a workbench 1, a work bin 2, a top cover 3, a mounting shell 4, an observation window 5, a high-speed motor 7, a grinding roller 8, a grinding disc 9, a screen 10, a scraper 11, a support frame 12, a reduction motor 13, a guide plate 14, a cover plate 15, a connecting rod 16, a protective shell 18 and a feeding pipe 19. The work bin 2 is installed on the workbench 1. The lower part of the work bin 2 is funnel-shaped, and a discharge port is provided at the lower part of the work bin 2. A top cover 3 is provided on the top of the work bin 2, and a feeding pipe 19 is installed on the top cover 3. An observation window 5 is installed on the work bin 2, through which workers can monitor the grinding state of calcium hydroxide conveniently. Two mounting shells 4 are installed along the circumference of the work bin 2, and a high-speed motor 7 is installed in the mounting shell 4. A cover plate 15 is hinged on the mounting shell 4, and workers can conveniently repair the high-speed motor 7 by controlling the cover plate 15 to open. A connecting rod 16 is installed on the output shaft of the speed motor 7, and a grinding roller 8 is installed on the connecting rod 16. A support frame 12 is installed on the inner wall of the working bin 2, and a reduction motor 13 is installed on the top of the support frame 12. A protective shell 18 is installed on the support frame 12, and the protective shell 18 can cover the reduction motor 13 to prevent calcium hydroxide dust from damaging the reduction motor 13. A grinding disc 9 is connected to the output shaft of the reduction motor 13, and the middle part of the grinding disc 9 is recessed downward. The grinding roller 8 is located above the grinding disc 9, and the gap between the grinding disc 9 and the grinding roller 8 is less than 2 mm. An annular screen 10 is installed on the grinding disc 9, and a guide plate 14 is installed at the bottom of the grinding disc 9. The guide plate 14 is set to be narrow at the top and wide at the bottom. A scraper 11 is installed on the inner wall of the working bin 2, and the scraper 11 is located above the screen 10. The scraper 11 is set to be inclined, and the scraper 11 can scrape the particles on the screen 10.

[0021] Add lump calcium hydroxide into the working bin 2 from the feed pipe 19, the lump calcium hydroxide will fall into the depression on the grinding disc 9, then control the high-speed motor 7 to drive the connecting rod 16 and the grinding roller 8 to rotate, and control the reduction motor 13 to drive the grinding disc 9 to rotate, so as to grind the lump calcium hydroxide into powder. Under the action of centrifugal force, the calcium hydroxide powder moves toward the inner wall of the working bin 2. When the calcium hydroxide powder reaches the position of the screen 10, the granular calcium hydroxide that has not been completely crushed is blocked on the screen 10, and moves to the position of the scraper 11 as the grinding disc 9 rotates. Then, it is scraped to the depression of the grinding disc 9 by the inclined scraper 11 for secondary grinding. The powdered calcium hydroxide will fall onto the guide plate 14 through the screen 10. The guide plate 14 can provide shielding for the reduction motor 13 to prevent the calcium hydroxide powder from falling to the position of the reduction motor 13. Then, the calcium hydroxide powder is transferred from the discharge port of the working bin 2 to the next process. In this way, the structure of the grinding equipment can be simplified without affecting the function, and the difficulty of maintenance of the grinding equipment is reduced.

[0022] Example 2

[0023] On the basis of Example 1, Figure 1 and Figure 5 As shown, it also includes a water tank 6 and a nozzle 17. The water tank 6 is installed on the top of the cover plate 15. The water tank 6 is connected to the nozzle 17 through a pipeline. The nozzle 17 is located below the top cover 3. When the device is used up, the external water pipe is connected to the water tank 6, and then water is poured into the water tank 6 so that the nozzle 17 sprays clean water to clean the inside of the working chamber 2, making it convenient for workers to clean the equipment.

[0024] The above-mentioned embodiments only express the preferred implementation of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications, improvements and substitutions can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A vertical mill for preparing stable crushing of calcium hydroxide, characterized in that: The invention comprises a workbench (1), a work bin (2), a top cover (3), a mounting shell (4), a high-speed motor (7), a grinding roller (8), a grinding disc (9), a screen (10), a scraper (11), a support frame (12), a reduction motor (13), a connecting rod (16) and a feed pipe (19). The workbench (1) is mounted with a work bin (2), the lower part of the work bin (2) is funnel-shaped, the lower part of the work bin (2) is provided with a discharge port, the top of the work bin (2) is provided with a top cover (3), the feed pipe (19) is mounted on the top cover (3), two mounting shells (4) are mounted on the work bin (2) along the circumferential direction, a high-speed motor (7) is mounted in the mounting shell (4), and the output shaft of the high-speed motor (7) is provided with a plurality of mounting shells (4). A connecting rod (16) is installed on the connecting rod (16), and a grinding roller (8) is installed on the connecting rod (16). A support frame (12) is installed on the inner wall of the working bin (2), and a reduction motor (13) is installed on the top of the support frame (12). A grinding disc (9) is connected to the output shaft of the reduction motor (13), and the middle part of the grinding disc (9) is concave downward. The grinding roller (8) is located above the grinding disc (9), and the gap between the grinding disc (9) and the grinding roller (8) is less than 2 mm. An annular screen (10) is installed on the grinding disc (9), and a scraper (11) is installed on the inner wall of the working bin (2). The scraper (11) is located above the screen (10), and the scraper (11) is inclined. The scraper (11) can scrape the particles on the screen (10).

2. A vertical mill for preparing stable crushing of calcium hydroxide according to claim 1, characterized in that: It also includes an observation window (5), and the observation window (5) is installed on the working chamber (2).

3. A vertical mill for preparing stable crushing of calcium hydroxide according to claim 2, characterized in that: The grinding disc (9) further comprises a guide disc (14). The guide disc (14) is installed at the bottom of the grinding disc (9). The guide disc (14) is narrow at the top and wide at the bottom.

4. A vertical mill for preparing stable crushing of calcium hydroxide according to claim 3, characterized in that: It also includes a cover plate (15), which is hingedly connected to the mounting shell (4).

5. A vertical mill for preparing stable crushing of calcium hydroxide according to claim 4, characterized in that: It also includes a water tank (6) and a nozzle (17). The water tank (6) is installed on the top of the cover plate (15). The water tank (6) is connected to the nozzle (17) through a pipeline. The nozzle (17) is located below the top cover (3).

6. A vertical mill for preparing stable crushing of calcium hydroxide according to claim 5, characterized in that: It also includes a protective shell (18), which is installed on the support frame (12) and can cover the reduction motor (13).

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