Gypsum powder grinding device

Abstract

The utility model relates to the technical field of gypsum powder processing, in particular to a gypsum powder grinding device which comprises a crushing mechanism for crushing large-particle gypsum, a grinding mechanism and a screening mechanism for screening powdery gypsum, the grinding mechanism comprises a hopper, and a grinding cylinder is fixed to the lower end of the hopper. The gypsum is ground through rotation of the grinding seat, meanwhile, the push rod is driven to rotate, the crushing box swings under the support of the two screening plates through cooperation of the push rod and the grinding seat, then screening of powder in the gypsum by the screening plates is accelerated, gypsum particles in the crushing box can also slide and swing, and the gypsum particles are crushed. Gypsum particles are prevented from being clamped in the dead angle position of the crushing mechanism, the interior of the crushing mechanism is heated through two heating plates at the lower end of the hopper, and the screened gypsum powder and the crushed gypsum are dried through the continuously-rising temperature in the hopper.

Description

Technical Field

[0001] The utility model relates to the technical field of gypsum powder processing, in particular to a gypsum powder grinding device. Background Art

[0002] According to the patent document with the publication number CN218190126U retrieved, the gypsum powder obtained by grinding is sent to a crushing roller for crushing, and then enters a grinding chamber. The motor drives a moving grinding table to cooperate with grinding beads between the moving grinding table and a fixed grinding table for grinding operation. The grinding is followed by screening operation through a vibrating screening mesh. The unqualified materials after screening are re-introduced into the grinding chamber through a lifting conveyor for re-grinding.

[0003] When the patent document grinds gypsum powder, if the gypsum powder contains a certain amount of moisture, the gypsum between the moving grinding table and the fixed grinding table will be extruded and bonded into blocks by the grinding beads, thus affecting the overall grinding accuracy. If there is a large amount of gypsum powder, it is likely to accumulate during screening, thus affecting the screening speed of the whole gypsum powder. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a gypsum powder grinding device to solve the above problems.

[0005] The utility model realizes the above purpose through the following technical solutions:

[0006] A gypsum powder grinding device includes a crushing mechanism for crushing large particles of gypsum, and also includes a grinding mechanism and a screening mechanism for screening out powdered gypsum.

[0007] The grinding mechanism includes a hopper. A grinding cylinder is fixed at the lower end of the hopper. A grinding seat is rotatably connected inside the grinding cylinder. A push rod is fixed at the top of the grinding seat. A plurality of scraping plates for pushing the ground gypsum powder out of the grinding cylinder are fixed on the lower side of the grinding seat. A powder outlet is formed on one side of the grinding cylinder. A heating plate for heating the inside thereof is fixed on the inclined surface at the lower side of the hopper.

[0008] The screening mechanism includes a crushing box. Screening plates are hinged at both sides of the upper end of the crushing box. The upper ends of the screening plates are movably connected inside the hopper. Wave plates are fixed at both sides of the lower end of the crushing box. Guard plates are fixed at both sides of the front end of the crushing box.

[0009] Preferably, a swinging opening is formed on the front side of the hopper. Horizontal axes for supporting the upper ends of the screening plates are fixed at both sides inside the hopper.

[0010] Preferably, grinding grooves for grinding gypsum are formed on the conical surface inside the grinding cylinder and the conical surface outside the grinding seat.

[0011] Preferably, a grinding motor is fixedly arranged at the input end of the grinding base, and the grinding motor is located at the bottom of the grinding cylinder.

[0012] Preferably, four support legs are circumferentially arranged outside the grinding motor at the bottom of the grinding cylinder, and the hopper is communicated with the grinding cylinder.

[0013] Preferably, the crushing mechanism comprises a bracket which is fixed on the front side of the crushing box. One end of the bracket extending out of the swing opening is fixed with a crushing motor. Two symmetrically arranged crushing rollers are rotatably connected inside the crushing box. A driving gear is fixedly arranged at the input end of the crushing motor, and driven gears for driving the crushing rollers to rotate are meshed on both sides of the driving gear.

[0014] The beneficial effects compared with the prior art are as follows:

[0015] 1. While grinding the gypsum by the rotation of the grinding base, the push rod is driven to rotate. Then, through the cooperation of the push rod and the grinding base, the crushing box swings under the support of the two screening plates, thereby accelerating the screening of the powder in the gypsum by the screening plates and enabling the gypsum particles in the crushing box to slide and swing, avoiding the gypsum particles being stuck in the dead corners of the crushing mechanism.

[0016] 2. The inside is heated by two heating plates at the lower end of the hopper, and the screened gypsum powder and the crushed gypsum are dried by the continuously rising temperature in the hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic structural diagram of a gypsum powder grinding device according to the present invention;

[0019] Figure 2 is a cross-sectional view of a gypsum powder grinding device according to the present invention;

[0020] Figure 3 is a partial part drawing of the heating plate of a gypsum powder grinding device according to the present invention;

[0021] Figure 4 is a partial part drawing of the screening plate of a gypsum powder grinding device according to the present invention;

[0022] Figure 5 is a partial part drawing of the crushing mechanism of a gypsum powder grinding device according to the present invention;

[0023] Figure 6 It is a partial part drawing of the corrugated plate of a gypsum powder grinding device described in the present utility model;

[0024] Figure 7 It is the first state diagram of the push rod and the corrugated plate of a gypsum powder grinding device described in the present utility model;

[0025] Figure 8 It is a partial part drawing of the grinding seat of a gypsum powder grinding device described in the present utility model;

[0026] Figure 9 It is the second state diagram of the push rod and the corrugated plate of a gypsum powder grinding device described in the present utility model.

[0027] The description of the reference numerals is as follows:

[0028] 1. Grinding mechanism; 2. Screening mechanism; 3. Crushing mechanism; 4. Support leg; 5. Grinding motor; 6. Powder outlet; 7. Swing port; 8. Heating plate; 11. Hopper; 12. Grinding cylinder; 13. Grinding seat; 14. Push rod; 15. Scraper; 21. Screening plate; 22. Crushing box; 23. Corrugated plate; 24. Guard plate; 31. Crushing roller; 32. Crushing motor; 33. Bracket; 34. Driven gear; 35. Driving gear. Specific embodiments

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] The present utility model will be further described below with reference to the accompanying drawings:

[0032] As Figures 1 - 9 shown, a gypsum powder grinding device includes a crushing mechanism 3 for crushing large particles of gypsum, and also includes a grinding mechanism 1 and a screening mechanism 2 for screening out powdered gypsum.

[0033] The grinding mechanism 1 includes a hopper 11. A grinding cylinder 12 is fixed at the lower end of the hopper 11. A grinding seat 13 is rotatably connected inside the grinding cylinder 12. A push rod 14 is fixed at the top of the grinding seat 13. A plurality of scraping plates 15 for pushing the ground gypsum powder out of the grinding cylinder 12 are fixed on the lower side of the grinding seat 13. A powder outlet 6 is formed on one side of the grinding cylinder 12. A heating plate 8 for heating the inside thereof is fixed on the inclined surface at the lower side of the hopper 11. Grinding grooves for grinding gypsum are formed on the conical surface inside the grinding cylinder 12 and the outer conical surface of the grinding seat 13. A grinding motor 5 is fixedly arranged at the input end of the grinding seat 13. The grinding motor 5 is located at the bottom of the grinding cylinder 12. Four support legs 4 are circumferentially arranged outside the grinding motor 5 at the bottom of the grinding cylinder 12. The hopper 11 is communicated with the grinding cylinder 12. The gypsum is poured into the screening mechanism 2 by using the hopper 11. The gypsum after passing through the screening mechanism 2 falls into the inside of the grinding cylinder 12. Then, the grinding motor 5 drives the grinding seat 13 to rotate inside the grinding cylinder 12, so as to enable the grinding seat 13 to grind the gypsum. At the same time, the scraping plate 15 is driven by the grinding seat 13 to rotate at the bottom inside the grinding cylinder 12, so as to send the ground gypsum powder out from the powder outlet 6. At the same time, the inside of the hopper 11 is heated under the action of the heating plate 8, and then the temperature of the hopper 11 is raised to heat and evaporate and dry the moisture in the gypsum.

[0034] The screening mechanism 2 includes a crushing box 22. On both sides of the upper end of the crushing box 22, screening plates 21 are hinged. The upper ends of the screening plates 21 are movably connected inside the hopper 11. On both sides of the lower end of the crushing box 22, corrugated plates 23 are fixed. On both sides of the front end of the crushing box 22, guard plates 24 are fixed. A swinging opening 7 is formed on the front side of the hopper 11. On both sides inside the hopper 11, cross shafts for supporting the upper ends of the screening plates 21 are fixed. By driving the rotating of the push rod 14 around the input end of the grinding seat 13 by the rotation of the grinding seat 13, when the upper end of the push rod 14 slides on the inner wall of the corrugated plate 23 through the rotation of the push rod 14, when the push rod 14 slides towards the middle position of the corrugated plate 23, the push rod 14 will push the crushing box 22 to one side through the corrugated plate 23. Immediately, the crushing box 22 will turn upwards with the lower end of the screening plate 21 on one side as the center, and the upper end of the screening plate 21 on the other side will extend upwards along the cross shaft. When the push rod 14 rotates to the grinding seat 13 on the other side and repeats the above actions, the crushing box 22 will swing back and forth in the hopper 11, immediately accelerating the falling of the powdered gypsum on the screening plate 21. At the same time, the gypsum particles in the crushing box 22 can also swing synchronously, preventing the gypsum particles from getting stuck in the dead corner position of the crushing mechanism 3.

[0035] In this embodiment: The crushing mechanism 3 includes a bracket 33. The bracket 33 is fixed on the front side of the crushing box 22. One end of the bracket 33 extending out of the swinging opening 7 is fixed with a crushing motor 32. Inside the crushing box 22, two symmetrically arranged crushing rolls 31 are rotatably connected. A driving gear 35 is fixed at the input end of the crushing motor 32. On both sides of the driving gear 35, driven gears 34 for driving the crushing rolls 31 to rotate are engaged. By driving the rotation of the driving gear 35 by the rotating part of the crushing motor 32, the two crushing rolls 31 are driven to rotate inside the crushing box 22 through the engagement of the driving gear 35 and the two driven gears 34, and then the gypsum particles in the crushing box 22 are crushed.

[0036] Working principle: When in use, first, the gypsum to be ground is poured into the hopper 11. Then the gypsum will be screened on the two screening plates 21 on both sides, and then the large particles in the gypsum will be introduced into the crushing box 22. At the same time, the grinding motor 5 drives the grinding seat 13 to rotate inside the grinding cylinder 12, and the push rod 14 on the grinding seat 13 will rotate with it. When the push rod 14 rotates to the corrugated plate 23 at the bottom of the crushing box 22, the upper end of the push rod 14 slides on the inner wall of the corrugated plate 23;

[0037] As Figure 9As shown, when the upper end of the push rod 14 slides towards the middle position of the corrugated plate 23, due to the structure of the corrugated plate 23, the push rod 14 will push the crushing box 22 to one side through the corrugated plate 23. Immediately, the crushing box 22 will rotate upwards with the lower end of the screening plate 21 on one side as the center, and the upper end of the screening plate 21 on the other side will extend upwards along the transverse axis. At this time, the crushing box 22 will swing to one side. When the push rod 14 rotates to the corrugated plate 23 on the other side, the crushing box 22 will swing to the other side; repeating the above actions, the crushing box 22 will swing back and forth in the hopper 11, thereby accelerating the falling of the powdery gypsum on the screening plate 21. At the same time, the gypsum particles in the crushing box 22 can also swing synchronously, preventing the gypsum particles from getting stuck in the dead corner of the crushing mechanism 3, and at the same time, the gypsum particles can be slowly introduced into the crushing box 22;

[0038] When the crushing box 22 shakes, the bracket 33 moves in the swing port 7, and then closes the swing port 7 through the front side of the crushing box 22 and the two guard plates 24 to prevent the gypsum from scattering outside the hopper 11. In addition, the crushing motor 32 drives the driving gear 35 to rotate, and drives the two crushing rollers 31 to rotate inside the crushing box 22 through the meshing of the driving gear 35 and the two driven gears 34. Then, the gypsum particles inside the crushing box 22 are crushed by the crushing rollers 31;

[0039] The crushed gypsum and the screened gypsum will enter the grinding cylinder 12 from the lower end of the hopper 11, and the grinding seat 13 inside the grinding cylinder 12 starts to grind the gypsum; the ground gypsum powder will slide out between the grinding cylinder 12 and the grinding seat 13 and fall on the bottom side inside the grinding cylinder 12. At the same time, the rotation of the grinding seat 13 will drive the scraper 15 to rotate on the bottom side inside the grinding cylinder 12, so as to send the ground gypsum powder out from the powder outlet 6;

[0040] In addition, under the action of the heating plate 8, the inside of the hopper 11 is heated, so as to evaporate and dry the moisture in the gypsum by heating the hopper 11, avoiding the gypsum powder from sticking into blocks during grinding.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A gypsum powder grinding device, comprising a crushing mechanism (3) for crushing large particles of gypsum, characterized in that: It further includes a grinding mechanism (1) and a screening mechanism (2) for screening out powdered gypsum; The grinding mechanism (1) includes a hopper (11). A grinding cylinder (12) is fixed to the lower end of the hopper (11). A grinding seat (13) is rotatably connected inside the grinding cylinder (12). A push rod (14) is fixed to the top of the grinding seat (13). A plurality of scraping plates (15) for pushing the ground gypsum powder out of the grinding cylinder (12) are fixed to the lower side of the grinding seat (13). A powder outlet (6) is formed on one side of the grinding cylinder (12). A heating plate (8) for heating the inside thereof is fixed to the inclined surface of the lower side of the hopper (11); The screening mechanism (2) includes a crushing box (22). Screening plates (21) are hinged to both sides of the upper end of the crushing box (22). The upper ends of the screening plates (21) are movably connected inside the hopper (11). Wave plates (23) are fixed to both sides of the lower end of the crushing box (22). Guard plates (24) are fixed to both sides of the front end of the crushing box (22).

2. The gypsum powder grinding device according to claim 1, wherein: A swing opening (7) is formed on the front side of the hopper (11). Horizontal shafts for supporting the upper ends of the screening plates (21) are fixed to both sides inside the hopper (11).

3. The gypsum powder grinding device according to claim 1, wherein: Grinding grooves for grinding gypsum are formed on the conical surface inside the grinding cylinder (12) and the outer conical surface of the grinding seat (13).

4. A gypsum powder grinding device according to claim 1, characterized in that: A grinding motor (5) is fixedly arranged at the input end of the grinding seat (13). The grinding motor (5) is located at the bottom of the grinding cylinder (12).

5. A gypsum powder grinding device according to claim 4, characterized in that: Four support legs (4) are circumferentially arranged outside the grinding motor (5) at the bottom of the grinding cylinder (12). The hopper (11) communicates with the grinding cylinder (12).

6. The gypsum powder grinding device according to claim 1, wherein: The crushing mechanism (3) includes a bracket (33). The bracket (33) is fixed to the front side of the crushing box (22). A crushing motor (32) is fixed to one end of the bracket (33) extending out of the swing opening (7). Two symmetrically arranged crushing rollers (31) are rotatably connected inside the crushing box (22). A driving gear (35) is fixed to the input end of the crushing motor (32). Driven gears (34) for driving the crushing rollers (31) to rotate are meshed on both sides of the driving gear (35).

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