Gypsum powder production grinding device

Abstract

The utility model relates to the technical field of grinding devices, and discloses a gypsum powder production grinding device which comprises a hollow grinding box, two grinding rollers, a discharging cover and a fixing cylinder with the top open. The two grinding rollers are symmetrically and rotationally installed on the top side of the interior of the grinding box, a plurality of grinding protrusions which are arranged in a staggered mode are fixedly connected to the side walls of the two grinding rollers, and a driving mechanism used for driving the grinding rollers to rotate is arranged on one side of the grinding box; according to the gypsum powder grinding device, two grinding rollers can be driven to rotate through a driving motor, so that caked gypsum can be subjected to primary grinding, a second grinding cutter can be driven to rotate through a motor, and gypsum powder can be subjected to secondary grinding through mutual cooperation of a first grinding cutter and the second grinding cutter, so that the uniformity of the gypsum powder during grinding is improved; and meanwhile, manual grinding of the gypsum powder is also avoided.

Description

Technical Field

[0001] This application relates to the technical field of grinding devices, and in particular, to a grinding device for gypsum powder production. Background Art

[0002] Gypsum powder is one of the five major gel materials and occupies an important position in the national economy. It is widely used in many application fields such as construction, building materials, industrial molds and art models, chemical industry, agriculture, food processing, and medical beauty. It is an important industrial raw material. Gypsum powder has special requirements for storage and cannot be stored in a humid environment. In a humid environment, gypsum powder is prone to condense into lumps. During use, the lumpy gypsum powder needs to be ground to ensure its use effect.

[0003] For example, the Chinese utility model patent with the publication number CN205323934U discloses a gypsum powder grinder, which includes a grinding body, a grinding shaft, a compression spring, and a disk cover. The grinding body is formed with a vertical through hole, and a conical cavity is formed in the upper part of the through hole. The lower outer peripheral surface of the grinding shaft is in close sliding fit with the inner wall of the lower part of the through hole. A conical body is formed in the middle of the grinding shaft, and the side surface of the conical body is in close sliding fit with the inner wall of the conical cavity. The upper outer peripheral surface of the grinding shaft is in close sliding fit with the upper end of the conical cavity. The disk cover is fixedly installed at the upper end of the grinding shaft, and a compression spring is arranged between the lower end surface of the disk cover and the grinding shaft. The compression spring is sleeved on the grinding shaft. An inlet hole is formed at the upper end of the grinding body, and one end of the inlet hole communicates with the conical cavity. This gypsum powder grinder can grind the lumpy or granular gypsum powder after being affected by moisture into powder.

[0004] Regarding the above related technologies, the inventor believes that currently, when grinding the caked gypsum powder, usually an artificial manual method is adopted to grind and collect the gypsum. For a small amount of gypsum grinding, manual operation can be used. However, for processing a large amount of gypsum powder, the labor intensity of manual grinding is relatively high, and it is difficult to ensure the uniformity of the gypsum powder by manual grinding. Uneven grinding may lead to inconsistent quality of the gypsum powder, thus affecting the subsequent application effect. Utility Model Content

[0005] In order to solve the problems raised in the above background art, this application provides a grinding device for gypsum powder production.

[0006] The grinding device for gypsum powder production provided by this application adopts the following technical solutions:

[0007] A grinding device for gypsum powder production includes a hollow grinding box, two grinding rollers, a feeding cover, and a fixed cylinder with an open top.

[0008] A feeding port is opened in the middle of the upper surface of the grinding box.

[0009] The two grinding rollers are symmetrically rotatably mounted on the top side of the grinding box, and a plurality of grinding protrusions arranged in an interlaced manner are fixedly connected to the side walls of the two grinding rollers. A driving mechanism for driving the grinding rollers to rotate is arranged on one side of the grinding box;

[0010] The lower material cover is fixedly installed inside the grinding box, and the lower material cover is located below the grinding roller. The lower surface of the lower material cover is fixedly connected to a lower material hopper through a lower material pipe, and the inner side wall of the lower material hopper is provided with a plurality of first grinding knives;

[0011] The fixed cylinder is fixedly connected to the bottom side of the grinding box, the interior of the fixed cylinder is fixedly connected to a connecting cylinder, a motor is arranged in the connecting cylinder, the output end of the motor is connected to a grinding head via a connecting shaft, a plurality of second grinding knives used in conjunction with the first grinding knives are arranged on the side wall of the grinding head, and a scraping assembly for scraping out gypsum powder located inside the fixed cylinder is arranged on the connecting shaft.

[0012] Preferably, the driving mechanism includes a driving motor and two gears, the driving motor is fixedly connected to one side of the grinding box through a fixed frame, one end of the two grinding rollers passes through the side wall of the grinding box, the two gears are respectively mounted on the side walls of the two grinding rollers extending out of the grinding box, the two gears are meshed with each other, and the output end of the driving motor is transmission-connected to one end of one of the grinding rollers.

[0013] Preferably, a plurality of grinding protrusions are provided on the side walls of the two grinding rollers.

[0014] Preferably, the scraper assembly includes two scrapers and two connecting rods, one end of the two connecting rods are fixedly connected to the side wall of the connecting shaft, the other ends of the two connecting rods are respectively fixedly connected to the two scrapers, and the bottom of the scraper is in contact with the bottom side of the fixed cylinder.

[0015] Preferably, the scraper is located between the inner wall of the fixing cylinder and the outer wall of the connecting cylinder.

[0016] Preferably, a discharge port is symmetrically fixedly connected to the side wall of the fixed cylinder and is obliquely arranged, and one end of the discharge port penetrates the side wall of the grinding box and then extends to the outside.

[0017] Preferably, a mounting groove is provided on the upper surface of the connecting tube, and the motor is located in the mounting groove.

[0018] In summary, this application includes the following beneficial technical effects:

[0019] Compared with the prior art, the driving motor can drive the two grinding rollers to rotate, so that the caked gypsum can be ground at the primary level. The electric motor can drive the second grinding knife to rotate, and through the mutual cooperation between the first grinding knife and the second grinding knife, the gypsum powder can be ground at the secondary level to improve the uniformity of the gypsum powder during grinding. At the same time, it also avoids the need for manual grinding of the gypsum powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structural schematic diagram of an embodiment of the application;

[0021] Figure 2 is a structural schematic diagram of the driving mechanism of an embodiment of the application;

[0022] Figure 3 is a structural schematic diagram of the first grinding knife and the second grinding knife of an embodiment of the application;

[0023] Figure 4 is a structural schematic diagram of the scraping component of an embodiment of the application.

[0024] Description of the reference numerals: 1, grinding box; 2, feed inlet; 3, fixing frame; 4, driving motor; 5, gear; 6, discharge port; 7, grinding roller; 8, grinding protrusion; 9, blanking cover; 10, blanking pipe; 11, hopper; 12, fixed cylinder; 13, first grinding knife; 14, second grinding knife; 15, grinding head; 16, scraper; 17, connecting cylinder; 18, electric motor; 19, connecting shaft; 20, connecting rod; 21, installation groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will further describe the present application in detail Figures 1-4 with reference to the accompanying drawings.

[0026] An embodiment of the present application discloses a grinding device for producing gypsum powder. Referring to Figures 1-4 , a grinding device for producing gypsum powder includes a hollow grinding box 1, two grinding rollers 7, a blanking cover 9, and a fixed cylinder 12 with an open top. A feed inlet 2 is opened in the middle of the upper surface of the grinding box 1. The two grinding rollers 7 are symmetrically and rotatably installed on the top side inside the grinding box 1. A plurality of mutually staggered grinding protrusions 8 are fixedly connected to the side walls of the two grinding rollers 7. A driving mechanism for driving the grinding rollers 7 to rotate is provided on one side of the grinding box 1;

[0027] The driving mechanism includes a driving motor 4 and two gears 5. The driving motor 4 is fixedly connected to one side of the grinding box 1 through a fixing frame 3. One end of each of the two grinding rollers 7 penetrates through the side wall of the grinding box 1. The two gears 5 are respectively sleeved on the side walls of the two ends of the grinding rollers 7 extending out of the grinding box 1. The two gears 5 are meshed with each other. The output end of the driving motor 4 is in transmission connection with one end of one of the grinding rollers 7;

[0028] The blanking cover 9 is fixedly installed inside the grinding box 1, and the blanking cover 9 is located below the grinding roller 7. The lower surface of the blanking cover 9 is fixedly communicated with a blanking hopper 11 through a blanking pipe 10. A plurality of first grinding knives 13 are fixedly connected to the inner side wall of the blanking hopper 11. The fixed cylinder 12 is fixedly connected to the bottom side inside the grinding box 1. A connecting cylinder 17 is fixedly connected inside the fixed cylinder 12. A motor 18 is arranged inside the connecting cylinder 17. An installation groove 21 is formed on the upper surface of the connecting cylinder 17. The motor 18 is located inside the installation groove 21, so as to ensure the normal installation and operation of the motor 18. The output end of the motor 18 is drivingly connected with a grinding head 15 through a connecting shaft 19. A plurality of second grinding knives 14 which are used in cooperation with the first grinding knives 13 are fixedly connected to the side wall of the grinding head 15. A scraping component for scraping out gypsum powder is arranged on the connecting shaft 19 and is located inside the fixed cylinder 12;

[0029] The scraping component includes two scraping plates 16 and two connecting rods 20. One ends of the two connecting rods 20 are fixedly connected to the side wall of the connecting shaft 19 respectively. The other ends of the two connecting rods 20 are fixedly connected to the two scraping plates 16 respectively. The bottom of the scraping plate 16 is in contact with the bottom side inside the fixed cylinder 12. The scraping plate 16 is located between the inner side wall of the fixed cylinder 12 and the outer side wall of the connecting cylinder 17, so as to scrape out the gypsum powder between the fixed cylinder 12 and the connecting cylinder 17. The side wall of the fixed cylinder 12 is symmetrically and fixedly communicated with discharge ports 6 which are obliquely arranged. One end of the discharge port 6 penetrates through the side wall of the grinding box 1 and extends to the outside.

[0030] During use, the electrical components appearing in this application are externally connected to a power supply and a control switch during use. The user can pour the caked gypsum into the grinding box 1 through the feed port 2. By starting the driving motor 4, one of the grinding rollers 7 can be driven to rotate. The grinding roller 7 can drive the gear 5 thereon to rotate. The gear 5 can drive the other grinding roller 7 to rotate synchronously through another gear 5. And the rotation directions of the two grinding rollers 7 are opposite. After the gypsum moves between the two grinding rollers 7, it is mutually extruded by the grinding protrusions 8 to complete the primary grinding of the caked gypsum. Then the gypsum powder continues to fall downward, and then sequentially enters the blanking hopper 11 through the blanking cover 9 and the blanking pipe 10. By starting the motor 18, the connecting shaft 19 can be driven to rotate. The connecting shaft 19 can drive the grinding head 15 to rotate. The grinding head 15 can drive the second grinding knives 14 thereon to rotate. Through the mutual cooperation between the first grinding knives 13 and the second grinding knives 14, the gypsum powder can be subjected to secondary grinding. The ground gypsum powder can fall downward to the inside of the fixed cylinder 12 at the gap between the blanking hopper 11 and the grinding head 15. And when the connecting shaft 19 rotates, the scraping plate 16 can be driven to rotate inside the fixed cylinder 12 through the connecting rod 20. The rotating scraping plate 16 can drive the gypsum powder to move. Finally, the gypsum powder can be discharged through the discharge port 6.

[0031] During this process, the driving motor 4 can drive the two grinding rollers 7 to rotate, so as to perform primary grinding on the caked gypsum. The motor 18 can drive the second grinding knife 14 to rotate, and through the mutual cooperation between the first grinding knife 13 and the second grinding knife 14, secondary grinding of the gypsum powder can be performed to improve the uniformity of the gypsum powder during grinding, and at the same time, manual grinding of the gypsum powder by workers is avoided.

[0032] In addition, 26 first grinding knives 13 are arranged in a circular array, and 26 second grinding knives 14 are arranged in a circular array. The grinding precision between the first grinding knife 13 and the second grinding knife 14 is greater than the precision of the primary grinding structure. Preferably, a vertical distance of 1 mm can be adopted between them, and this distance can also be set during the production stage according to actual requirements to ensure the final fineness after grinding.

[0033] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the communication inside two components, and can be directly connected. "Upper", "lower", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;

[0034] Second: In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0035] Finally: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0036] The above are all the preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A gypsum powder production grinding device, comprising a hollow grinding box (1), two grinding rollers (7), a material discharge cover (9) and a fixed cylinder (12) with an open top; A feed inlet (2) is provided in the middle of the upper surface of the grinding box (1); The two grinding rollers (7) are symmetrically rotatably mounted on the top side of the grinding box (1); a plurality of grinding protrusions (8) arranged in an interlaced manner are fixedly connected to the side walls of the two grinding rollers (7); and a driving mechanism for driving the grinding rollers (7) to rotate is arranged on one side of the grinding box (1); The material lowering cover (9) is fixedly installed inside the grinding box (1), and the material lowering cover (9) is located below the grinding roller (7); the lower surface of the material lowering cover (9) is fixedly connected to a material lowering hopper (11) through a material lowering pipe (10); and a plurality of first grinding knives (13) are arranged on the inner side wall of the material lowering hopper (11); The fixed cylinder (12) is fixedly connected to the bottom side of the grinding box (1); a connecting cylinder (17) is fixedly connected to the interior of the fixed cylinder (12); a motor (18) is arranged in the connecting cylinder (17); an output end of the motor (18) is connected to a grinding head (15) via a connecting shaft (19); a plurality of second grinding knives (14) for use with the first grinding knives (13) are arranged on the side wall of the grinding head (15); and a scraping assembly for scraping out gypsum powder and located inside the fixed cylinder (12) is arranged on the connecting shaft (19).

2. The gypsum powder production and grinding device according to claim 1, wherein: The driving mechanism comprises a driving motor (4) and two gears (5); the driving motor (4) is fixedly connected to one side of the grinding box (1) via a fixing frame (3); one end of each of the two grinding rollers (7) passes through the side wall of the grinding box (1); the two gears (5) are respectively sleeved on the side wall of one end of the two grinding rollers (7) extending out of the grinding box (1); the two gears (5) are meshed with each other; and the output end of the driving motor (4) is drivingly connected to one end of one of the grinding rollers (7).

3. A gypsum powder production and grinding device according to claim 1, characterized in that: The scraper assembly comprises two scrapers (16) and two connecting rods (20), one end of each of the two connecting rods (20) is fixedly connected to the side wall of the connecting shaft (19), and the other ends of the two connecting rods (20) are respectively fixedly connected to the two scrapers (16), and the bottom of each of the scrapers (16) is in contact with the bottom side of the inside of the fixed cylinder (12).

4. A gypsum powder production and grinding device according to claim 3, characterized in that: The scraper (16) is located between the inner wall of the fixed cylinder (12) and the outer wall of the connecting cylinder (17).

5. A gypsum powder production and grinding device according to claim 1, characterized in that: A discharge port (6) is symmetrically fixedly connected to the side wall of the fixed cylinder (12) and arranged obliquely, and one end of the discharge port (6) penetrates the side wall of the grinding box (1) and extends to the outside.

6. A gypsum powder production and grinding device according to claim 1, characterized in that: The upper surface of the connecting tube (17) is provided with a mounting groove (21), and the motor (18) is located in the mounting groove (21).

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