Gypsum powder calcination feeding device

Abstract

This utility model provides a gypsum powder calcination feeding device, specifically relating to the field of gypsum powder production technology. Its features include: a feeding hopper at the top of the frame, with the bottom of the hopper fixedly connected to the frame via vibration springs, and a vibration motor at the center of the bottom; a through hole on one side of the feeding hopper communicating with the feed inlet of the grinding chamber; the grinding chamber located on one side of the feeding hopper at the top of the frame, with a drive shaft running through it; a first belt sleeved on the outside of the drive shaft, with the other end of the first belt connected to the output end of a first motor; and the first motor fixed to a support base at the top of the frame. This utility model, through the vibration motor at the bottom of the feeding hopper and the surrounding vibration springs, can apply continuous and uniform vibration force to the feeding hopper. This design solves the problem of wet gypsum powder sticking and clumping on the hopper wall, significantly improving the material's flowability and ensuring that the gypsum powder smoothly and continuously enters the grinding chamber.

Description

Technical Field

[0001] This utility model relates to the field of gypsum powder production technology, specifically to a gypsum powder calcination feeding device. Background Technology

[0002] As an important material in construction, medical and other fields, gypsum powder has strict requirements for the particle size uniformity and continuous feeding of raw materials during its calcination process. Traditional gypsum powder calcination feeding devices generally have the following technical defects in operation:

[0003] 1. Conventional feed hoppers lack efficient unblocking structures, and damp gypsum powder easily sticks and clumps on the hopper wall, resulting in poor material discharge and requiring frequent machine shutdowns for cleaning, which affects production efficiency;

[0004] 2. Existing grinding mechanisms mostly adopt a fixed gap design, which cannot adjust the spacing between grinding plates in real time to adapt to raw materials with different moisture contents. This results in uneven particle size of gypsum powder after grinding, which affects the quality of subsequent calcination.

[0005] 3. When the ground powder falls onto the conveyor belt, it lacks a guiding and leveling structure, and is prone to accumulating at the drop point or splashing to both sides, resulting in raw material waste and equipment contamination.

[0006] 4. The feeding, grinding, and conveying units are mostly driven independently, lacking coordinated optimization design. Uncoordinated vibration transmission may cause equipment resonance and reduce operational stability.

[0007] To address the aforementioned issues, it is necessary to develop an integrated calcination feeding device that combines high-efficiency vibratory feeding, dynamic grinding gap adjustment, and spill-proof conveying, with the aim of improving the calcination production efficiency of gypsum powder. Utility Model Content

[0008] The purpose of this invention is to provide a gypsum powder calcination feeding device to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a gypsum powder calcination feeding device, comprising a frame, a feeding hopper, a grinding chamber, a grinding assembly, and a conveyor belt, characterized in that: a feeding hopper is provided at the top of the frame, the bottom of the feeding hopper is fixedly connected to the frame by vibration springs around its perimeter, and a vibration motor is provided at the center of the bottom; a through hole is provided on one side of the feeding hopper, communicating with the feed inlet of the grinding chamber; the grinding chamber is located on one side of the feeding hopper at the top of the frame, and a drive shaft is provided inside; a first belt is sleeved on the outside of the drive shaft, and the other end of the first belt is connected to the output end of a first motor; the first motor is fixed on a support base at the top of the frame; a grinding assembly is connected to the outside of the drive shaft inside the grinding chamber; a discharge port is provided at the bottom of the grinding chamber, and a conveyor belt is provided directly below the discharge port; a support conveyor frame is fixedly provided on the outside of the conveyor belt, and rotating shafts are provided at both ends; one end of the rotating shaft is connected to the output end of a second motor via a second belt.

[0010] Preferably, the grinding assembly includes an upper grinding plate, a lower grinding plate, a pneumatic shaft, a telescopic shaft, and a telescopic spring. The upper grinding plate is sleeved on the drive shaft inside the grinding chamber, and one side of the upper grinding plate is fixedly connected to the output end of the pneumatic shaft. A telescopic shaft is provided below the pneumatic shaft, and one end of the telescopic shaft is fixedly connected to one end point of the upper grinding plate. A telescopic spring is sleeved on the outside of the telescopic shaft. The lower grinding plate is provided on the other side of the upper grinding plate and is fixedly installed on the inner wall of the grinding chamber.

[0011] Preferably, the telescopic shaft is provided with a retaining plate in the middle, and one side of the retaining plate engages with the end of the telescopic spring.

[0012] Preferably, the upper grinding plate and the lower grinding plate are provided with grinding teeth on their opposing surfaces.

[0013] Preferably, the inside of the feed hopper is provided with a screening screen on the side near the grinding chamber, and a discharge channel is connected through it below. The end of the discharge channel is connected through the side wall of the grinding chamber and is located above the discharge port.

[0014] Preferably, a flat plate is vertically fixed at the bottom of the grinding chamber, and a gap is left between the flat plate and the surface of the conveyor belt to facilitate the passage of gypsum powder and prevent accumulation.

[0015] Preferably, the support conveyor frame is provided with protective side plates on both sides to prevent side leakage when the conveyor belt conveys gypsum powder.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model, through the vibration motor set at the bottom of the feed hopper and the vibration springs around it, can apply a continuous and uniform vibration force to the feed hopper. This design solves the problem of wet gypsum powder sticking and clumping on the hopper wall, significantly improves the flowability of the material, ensures that the gypsum powder enters the grinding chamber smoothly and continuously, avoids frequent shutdowns for cleaning due to material blockage, and greatly improves the stability of production efficiency.

[0018] 2. The grinding assembly includes a gap adjustment mechanism consisting of an upper grinding plate, a lower grinding plate, a pneumatic shaft, a telescopic shaft, and a telescopic spring. The pneumatic shaft can actively drive the upper grinding plate to make a large range of displacements, while the telescopic shaft and telescopic spring provide fine elastic compensation and buffering. This design allows the grinding gap between the upper and lower grinding plates to be adjusted in real time and dynamically according to the characteristics of the raw materials (especially gypsum powder with different moisture contents) and the grinding state. This effectively solves the problem of uneven particle size caused by fixed-gap grinding, ensuring that the ground gypsum powder has a more uniform particle size and meets the fineness standards. This provides a stable and qualified raw material for the subsequent calcination process, significantly improving the quality of the final calcined product.

[0019] 3. The screening screen installed in the feed hopper near the grinding chamber can perform preliminary screening of materials before they enter the grinding chamber, and transport qualified gypsum powder to the surface of the conveyor belt in advance through the feeding channel.

[0020] 4. The flat plate fixed at the bottom of the grinding chamber and above the conveyor belt has an appropriate gap between it and the surface of the conveyor belt. This structure can scrape and evenly distribute the gypsum powder falling from the discharge port, effectively preventing the powder from piling up into mounds or being unevenly distributed at the discharge point of the conveyor belt. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0023] The components in the attached diagram are labeled as follows: 1: Frame, 2: Feed hopper, 21: Through hole, 3: Vibration spring, 4: Vibration motor, 5: Grinding chamber, 51: Discharge port, 6: Drive shaft, 7: First belt, 8: First motor, 9: Support base, 10: Grinding assembly, 101: Upper grinding plate, 102: Lower grinding plate, 103: Pneumatic shaft, 104: Telescopic shaft, 105: Telescopic spring, 106: Clamping plate, 107: Grinding teeth, 16: Screening screen, 17: Discharge channel, 18: Flat plate Detailed Implementation

[0024] Although this invention may be described with respect to a particular application or industry, those skilled in the art will recognize its broader applicability. Those skilled in the art will understand that terms such as "above," "below," "upward," "downward," etc., are used to describe the drawings and not to indicate a limitation on the scope of the invention as defined by the appended claims. Any numerical designations such as "first" or "second" are merely illustrative and not intended to limit the scope of the invention in any way.

[0025] like Figures 1 to 2 As shown, this embodiment provides a gypsum powder calcination feeding device, including a frame 1, a feeding hopper 2, a grinding chamber 5, a grinding assembly 10, and a conveyor belt 11. The feeding hopper 2 is provided on the top of the frame 1. The bottom of the feeding hopper 2 is elastically connected to the frame 1 through vibration springs 3 around its perimeter, and a vibration motor 4 is fixed to the center of the bottom with a bolt. A through hole 21 is provided on the left side of the feeding hopper 2, which is connected to the feed port on the right side of the grinding chamber 5. The grinding chamber 51 is bolted to the top of the frame 1 and is located on the left side of the feeding hopper 2. A drive shaft 6 is horizontally installed inside the grinding chamber 51. A first belt 7 is sleeved on the left side of the drive shaft 6. The other end of the first belt 7 is connected to the output end of a first motor 8. The first motor 8 is fixed on a support base 9 on the top of the frame 1.

[0026] The grinding chamber 5 is equipped with a grinding assembly 10, including an upper grinding plate 101, a lower grinding plate 102, a pneumatic shaft 103, a telescopic shaft 104, and a telescopic spring 105. The upper grinding plate 101 is sleeved on the drive shaft 6. The piston rod end of the pneumatic shaft (103) is welded to the left side of the grinding plate 101. The cylinder of the pneumatic shaft 103 is fixed to the inner wall of the grinding chamber 5. The right end of the upper grinding plate 101 is hinged to one end of the telescopic shaft 104. The telescopic shaft 104 is sleeved with a telescopic spring 105, and a central retaining plate is provided. The right end of the 106 limiting telescopic spring 105; the lower grinding plate 102 is vertically fixed to the right side of the inner wall of the grinding chamber 5 by bolts, and the surfaces opposite to the upper grinding plate 101 are machined with diamond-shaped grinding teeth 107. The bottom of the grinding chamber 5 is provided with a feeding port 51, and a conveyor belt 11 is provided directly below the feeding port 51. A support conveyor frame 12 is fixed on the outside of the conveyor belt 11, and a rotating shaft 13 is provided at both ends. One end of the rotating shaft 13 is connected to the output end of the second motor 15 through the second belt 14.

[0027] The feed hopper 2 is equipped with a screening screen 16, the lower end of which is connected to the feeding channel 17. The outlet of the feeding channel (17) extends to the bottom of the grinding chamber 5 and directly above the feeding port 51. The bottom of the grinding chamber 5 is welded with a flat plate 18, and there is a gap between its bottom edge and the surface of the conveyor belt 11. The conveyor belt 11 is installed on the lower part of the frame 1 through the support conveyor frame 12. The two ends of the conveyor belt 11 are equipped with rotating shafts 13. The rotating shaft at the right end is connected to the second motor 15 through the second belt 14 for driving motion. The protective side plates 121 are bolted to both sides of the support conveyor frame 12, and the height is 1 / 3 of the width of the conveyor belt.

[0028] Working principle: First, after the gypsum powder is put into the feed hopper 2, the vibrating motor 4 starts and drives the feed hopper 2 to vibrate at high frequency and micro amplitude through the vibrating spring 3. The vibration causes the gypsum powder stuck to the wall to fall off, improving the fluidity. The material is initially screened by the screening screen 16: the qualified fine powder falls directly into the feeding channel 17 to the conveyor belt 11; the coarse powder enters the grinding chamber 5 through the through hole 21. The first motor 8 drives the transmission shaft 6 to rotate through the first belt 7, which drives the upper grinding plate 101 to move. The pneumatic shaft 103 pushes the upper grinding plate 101 to move according to the moisture content of the gypsum powder, realizing the coarse adjustment of the grinding gap. The gypsum powder is crushed under the shearing action of the grinding teeth 107. The qualified powder falls through the feeding port 51. The falling gypsum powder is scraped flat by the flat plate 18 to eliminate the accumulation peaks and valleys, forming a uniform material layer that falls onto the surface of the conveyor belt 11. The second motor 15 drives the conveyor belt 11 to run through the second belt 14, which smoothly transports the gypsum powder to the calcination process. The protective side plate 121 prevents the powder from overflowing to the side, ensuring the conveying efficiency.

[0029] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the inventive concept, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A gypsum powder calcination feeding device, comprising a frame (1), a feed hopper (2), a grinding chamber (5), a grinding assembly (10), and a conveyor belt (11), characterized in that: The top of the frame (1) is provided with a feeding hopper (2). The bottom of the feeding hopper (2) is fixedly connected to the frame (1) by vibration springs (3) around its perimeter. A vibration motor (4) is provided at the center of the bottom. A through hole (21) is provided on one side of the feeding hopper (2) to communicate with the feed inlet of the grinding chamber (5). The grinding chamber (5) is located on one side of the feeding hopper (2) at the top of the frame (1), and a drive shaft (6) is provided inside it. A first belt (7) is sleeved on the outside of the drive shaft (6). The other end of the first belt (7) is connected to the first motor (8) for power transmission. The first motor (8) is fixed on the support seat (9) at the top of the frame (1). The grinding chamber (5) has a grinding assembly (10) connected to the outside of the transmission shaft (6). The bottom of the grinding chamber (5) has a feeding port (51). A conveyor belt (11) is provided directly below the feeding port (51). A support conveyor frame (12) is fixed to the outside of the conveyor belt (11), and a rotating shaft (13) is provided at both ends. One end of the rotating shaft (13) is connected to the output end of the second motor (15) through the second belt (14).

2. The gypsum powder calcination feeding device as described in claim 1, characterized in that: The grinding assembly (10) includes an upper grinding plate (101), a lower grinding plate (102), a pneumatic shaft (103), a telescopic shaft (104), and a telescopic spring (105). The upper grinding plate (101) is sleeved on the transmission shaft (6) inside the grinding chamber (5), and the output end of the pneumatic shaft (103) is fixedly connected to one side of the upper grinding plate (101). The telescopic shaft (104) is provided below the pneumatic shaft (103). One end of the telescopic shaft (104) is fixedly connected to one end of the upper grinding plate (101), and the telescopic spring (105) is sleeved on the outside of the telescopic shaft (104). The lower grinding plate (102) is provided on the other side of the upper grinding plate (101), and the lower grinding plate (102) is fixedly installed on the inner wall of the grinding chamber (5).

3. The gypsum powder calcination feeding device as described in claim 2, characterized in that: The telescopic shaft (104) is provided with a retaining plate (106) in the middle, and the end of the telescopic spring (105) is engaged on one side of the retaining plate (106).

4. The gypsum powder calcination feeding device as described in claim 2, characterized in that: The upper grinding plate (101) and the lower grinding plate (102) are both provided with grinding teeth (107) on their opposite surfaces.

5. The gypsum powder calcination feeding device as described in claim 1, characterized in that: The feed hopper (2) has a screening screen (16) on the side near the grinding chamber (5) and a feeding channel (17) is connected to it below. The end of the feeding channel (17) is connected to the side wall of the grinding chamber (5) and is located above the feeding port (51).

6. The gypsum powder calcination feeding device as described in claim 1, characterized in that: The grinding chamber (5) is vertically fixed with a flat plate (18) at the bottom. A gap is left between the flat plate (18) and the surface of the conveyor belt (11) to facilitate the passage of gypsum powder and prevent accumulation.

7. The gypsum powder calcination feeding device as described in claim 1, characterized in that: The support conveyor frame (12) is provided with protective side plates (121) on both sides to prevent side leakage when the conveyor belt (11) conveys gypsum powder.

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