Combustion furnace for uniformly calcining gypsum powder

Abstract

The utility model provides a combustion furnace for uniformly calcining gypsum powder, and particularly relates to the technical field of gypsum powder processing, which comprises a protective cover, a combustion furnace, a transmission assembly and a clamping assembly, and is characterized in that the combustion furnace is arranged in the protective cover, a first motor is arranged in the center of the top of the combustion furnace, and the output end of the first motor penetrates through the combustion furnace and is fixedly connected with a stirring shaft; the stirring shaft is vertically arranged in the combustion furnace, multiple groups of stirring blades are fixedly connected to the exterior of the stirring shaft, supporting frames are arranged on the two sides of the first motor at the top of the combustion furnace, bearing connectors are arranged in the centers of the supporting frames, a main gas pipe is connected to the upper portions of the bearing connectors, and gas spraying pipes are connected to the lower portions of the bearing connectors; by means of the synergistic effect of the stirring shaft and the multiple layers of paddles and the combination of dynamic overturning of the rotatable combustion furnace body, three-dimensional, efficient and uniform mixing of gypsum powder is achieved, and by means of the matching design of the gas nozzle and the stirring track, the flame coverage range is dynamically adjusted along with the material movement path, and the calcination efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of gypsum powder processing technology, specifically to a combustion furnace for uniformly calcining gypsum powder. Background Technology

[0002] Calcination of gypsum powder is a crucial process in the production of gypsum products, and its uniformity directly affects the strength, setting time, and other performance indicators of the gypsum products. Traditional gypsum calcination equipment often employs static combustion furnaces or simple stirring structures, which suffer from uneven heat distribution and insufficient heating of the material. For example, some combustion furnaces rely solely on bottom burners for heating, resulting in significant temperature gradients within the furnace, making it difficult for the upper layer of material to reach the ideal calcination temperature. While equipment using a single stirring structure can improve the mixing effect, the lack of stirring blind spots can still lead to material accumulation and agglomeration, making it particularly unsuitable for calcining gypsum powder with high moisture content.

[0003] In recent years, existing technologies have improved calcination uniformity by adding a rotating furnace body or optimizing the burner layout, but significant drawbacks remain: the furnace body rotation drive mechanism is complex, transmission stability is insufficient, and long-term operation is prone to deviation and jamming; the burner and stirring components lack coordinated design, and the gas injection angle is fixed, failing to adapt to the calcination requirements of materials with different particle sizes; thirdly, the furnace body clamping structure is mostly rigidly fixed, making it difficult to adapt to the rapid disassembly and maintenance requirements of combustion furnaces of different sizes. These problems result in low calcination efficiency and high energy consumption in existing equipment, making it difficult to meet the industrial production requirements of high-precision gypsum powder. Utility Model Content

[0004] The purpose of this invention is to provide a combustion furnace for uniformly calcining gypsum powder, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combustion furnace for uniformly calcining gypsum powder, comprising a protective cover, a combustion furnace, a transmission assembly, and a clamping assembly, characterized in that: the combustion furnace is provided inside the protective cover, a first motor is provided at the center of the top of the combustion furnace, the output end of the first motor passes through the combustion furnace and is fixedly connected to a stirring shaft, the stirring shaft is vertically arranged inside the combustion furnace, and multiple sets of stirring blades are fixedly connected to the outside of the stirring shaft, support frames are provided on both sides of the first motor at the top of the combustion furnace, a bearing connector is provided at the center of the support frame, a main gas pipe is connected above the bearing connector, and a jet pipe is connected below it, the jet pipe passes through the top of the combustion furnace and extends to the upper part of the interior of the combustion furnace, and a gas nozzle is connected to the end of the jet pipe; a feed hopper door is opened on the upper half of one side surface of the combustion furnace, and a discharge hopper door is opened on the lower half of the other side.

[0006] The protective cover is provided with a transmission component on its surface. The transmission component is in contact with the outer wall surface of the combustion furnace. A base is fixedly provided at the center of the protective cover. A base bearing is provided at the center above the base. A clamping component is fixedly connected above the base bearing. The combustion furnace is provided above the clamping component.

[0007] Preferably, the protective cover has a concave structure with a rotating groove on its surface, and the combustion furnace is engaged in the rotating groove.

[0008] Preferably, the transmission assembly includes a second motor, a transmission belt, and a rotating shaft. Two rotating shafts are vertically arranged on both sides of the rotating groove. The surfaces of the two rotating shafts are in contact with the outer wall of the combustion furnace. One end of the rotating shaft is connected to a transmission belt, and the other end of the transmission belt is connected to the output end of the second motor. The second motor is fixed to one side surface of the protective cover.

[0009] Preferably, the clamping assembly includes a rotating seat, a sliding groove, a third motor, a transmission screw, a slider, and a clamping plate. The top of the base bearing is fixedly connected to the center of the bottom of the rotating seat. A sliding groove is formed on the surface of the rotating seat, and a transmission screw is arranged in the sliding groove. Two sliders are provided outside the transmission screw, and two clamping plates are fixedly connected above the two sliders. The two clamping plates are arranged on both sides of the bottom of the combustion furnace. A third motor is arranged on one side of the rotating seat, and the output end of the third motor is fixedly connected to one end of the transmission screw.

[0010] Preferably, a limit block is provided in the middle of the transmission screw, and the transmission screw threads at both ends of the limit block are opposite threads.

[0011] Preferably, the surfaces of the two clamping plates are semi-circular, and the combustion furnace is cylindrical, so that the clamping plates fit the combustion furnace more closely for clamping and fixing.

[0012] Preferably, the outer surfaces of the feed hopper door and the discharge hopper door are uniformly and fixedly provided with door handles.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model achieves three-dimensional, efficient and uniform mixing of gypsum powder through the synergistic effect of the stirring shaft and multi-layer blades, combined with the dynamic flipping of the rotatable combustion furnace body. The matching design of the gas nozzle and stirring trajectory allows the flame coverage to be dynamically adjusted according to the material movement path, thereby improving calcination efficiency.

[0015] 2. The innovative dual-rotation shaft drive enables the combustion furnace to rotate three-dimensionally through the contact surface with the combustion furnace. It works in conjunction with the clamping plate in the clamping assembly at the bottom of the combustion furnace for fixed clamping, ensuring that the gypsum powder inside the combustion furnace is efficiently and uniformly mixed under rotation conditions. Attached Figure Description

[0016] Figure 1 This is a frontal cross-sectional view of the present invention.

[0017] Figure 2 This is a top view of the structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the transmission component of this utility model.

[0019] Figure 4 This is a three-dimensional schematic diagram of the combustion furnace of this utility model.

[0020] The components in the attached diagram are labeled as follows: 1: Protective cover; 101: Rotating groove; 2: Combustion furnace; 3: First motor; 4: Stirring shaft; 5: Stirring blade; 6: Support frame; 7: Bearing connector; 8: Main gas pipe; 9: Jet pipe; 10: Gas nozzle; 11: Feed hopper door; 12: Discharge hopper door; 13: Base; 14: Base bearing; 15: Transmission assembly; 151: Second motor; 152: Transmission belt; 153: Rotating shaft; 16: Clamping assembly; 161: Rotating seat; 162: Slide groove; 163: Third motor; 164: Transmission screw; 165: Slider; 166: Clamping plate; 17: Limit block; 18: Door handle. Detailed Implementation

[0021] 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.

[0022] This embodiment provides a combustion furnace for uniformly calcining gypsum powder, such as... Figures 1 to 4 As shown, the furnace consists of a protective cover 1, a combustion furnace 2, a transmission assembly 15, and a clamping assembly 16. The protective cover 1 has a concave structure with an annular rotating groove 101 on its inner wall. The combustion furnace 2 is embedded in the rotating groove 101 by a snap-fit ​​method and is driven to rotate axially by the transmission assembly 15. A first motor 3 is installed at the top center of the combustion furnace 2, and its output shaft is rigidly connected to the stirring shaft 4. The stirring shaft 4 extends longitudinally along the furnace body, and multiple layers of stirring blades 5 are welded to its surface. The stirring blades 5 are designed with an inclination to form a highly efficient stirring and mixing.

[0023] Support frames 6 are symmetrically arranged on both sides of the top of the combustion furnace 2. The main gas pipe 8 and the jet pipe 9 are fixed in the center of the support frame 6 through the bearing connector 7. The jet pipe 9 extends downward to the top of the combustion furnace 2 and a gas nozzle 10 is installed at the end. The nozzle adopts a multi-hole fan-shaped diffusion structure to improve the flame coverage range, and the nozzle axis is dynamically matched with the rotation trajectory of the stirring blade 5. The upper right side of the combustion furnace 2 has a feed chamber door 11 and the lower left side has a discharge chamber door 12. The surface of the chamber door is welded with a door handle 18 to facilitate better feeding and discharging.

[0024] The transmission assembly 15 consists of a second motor 151, a transmission belt 152, and two rotating shafts 153. The two rotating shafts 153 are vertically distributed on both sides of the rotating groove 101. Their surfaces are covered with a high-friction rubber layer, forming a rolling friction transmission with the outer wall of the combustion furnace 2. The second motor 151 drives one side of the rotating shaft 153 through the transmission belt 152, causing the combustion furnace 2 to rotate around the axis. The base 13 is fixed to the center of the protective cover 1. The rotating seat 161 is connected to the base bearing 14 above it. The rotating seat 161 has a sliding groove 162 on its surface. A bidirectional threaded transmission screw 164 is installed in the groove. A limit block 17 is welded in the middle of the screw. The threads on both sides rotate in opposite directions. When the third motor 163 drives the transmission screw 164 to rotate, the two sliders 165 move synchronously in opposite directions along the sliding groove 162, causing the clamping plate 166 to adaptively clamp the bottom of the combustion furnace 2. The inner arc surface of the clamping plate 166 is in contact with the outer wall of the furnace body. The clamping force is controlled by the third motor 163.

[0025] Working principle: First, gypsum powder is put into the combustion furnace 2 through the feed hopper door 11. Then, the first motor 3 drives the stirring shaft 4 to rotate the multi-layer stirring blades 5. Then, the third motor 163 is started to clamp and fix the bottom of the combustion furnace 2 through the clamping plate 166. In conjunction with the second motor 151, the rotating shaft 153 is driven to move, thereby driving the combustion furnace 2 to rotate as a whole and eliminating dead corners of material accumulation. The flame coverage angle of the gas nozzle 10 is linked with the rotation of the stirring blades 5. When the stirring blades 5 throw the gypsum powder to a specific height, the flame of the gas nozzle 10 efficiently calcines the gypsum powder. After calcination, the calcined gypsum powder is discharged through the discharge hopper door 12 opened on the lower left side of the combustion furnace 2.

[0026] 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 combustion furnace for uniformly calcining gypsum powder, comprising a protective cover (1), a combustion furnace (2), a transmission assembly (15), and a clamping assembly (16), characterized in that: The protective cover (1) is equipped with a combustion furnace (2). The combustion furnace (2) has a first motor (3) at the top center. The output end of the first motor (3) passes through the combustion furnace (2) and is fixedly connected to the stirring shaft (4). The stirring shaft (4) is vertically installed inside the combustion furnace (2), and multiple sets of stirring blades (5) are fixedly connected to the outside of the stirring shaft (4). The first motor (3) at the top of the combustion furnace (2) is equipped with a support frame (6) on both sides. The support frame (6) has a bearing connector (7) at the center. The bearing connector (7) is connected to the main gas pipe (8) above and to the jet pipe (9) below. The jet pipe (9) passes through the top of the combustion furnace (2) and extends to the inside of the combustion furnace (2). The end of the jet pipe (9) is connected to a gas nozzle (10). The upper half of one side surface of the combustion furnace (2) is provided with a feed hopper door (11), and the lower half of the other side is provided with a discharge hopper door (12). The protective cover (1) is provided with a transmission component (15) on its surface. The transmission component (15) is in contact with the outer wall surface of the combustion furnace (2). A base (13) is fixedly provided in the center of the protective cover (1). A base bearing (14) is provided in the center above the base (13). A clamping component (16) is fixedly connected above the base bearing (14). The combustion furnace (2) is provided above the clamping component (16).

2. The combustion furnace for uniformly calcining gypsum powder as described in claim 1, characterized in that: The protective cover (1) has a concave structure, and a rotating groove (101) is provided on its surface. The combustion furnace (2) is engaged in the rotating groove (101).

3. The combustion furnace for uniformly calcining gypsum powder as described in claim 2, characterized in that: The transmission assembly (15) includes a second motor (151), a transmission belt (152) and a rotating shaft (153). Two rotating shafts (153) are vertically arranged on both sides of the rotating groove (101). The surfaces of the two rotating shafts (153) are in contact with the outer wall of the combustion furnace (2). One end of the rotating shaft (153) is connected to the transmission belt (152), and the other end of the transmission belt (152) is connected to the output end of the second motor (151). The second motor (151) is fixed to one side surface of the protective cover (1).

4. The combustion furnace for uniformly calcining gypsum powder as described in claim 1, characterized in that: The clamping assembly (16) includes a rotating seat (161), a sliding groove (162), a third motor (163), a transmission screw (164), a slider (165), and a clamping plate (166). The top of the base bearing (14) is fixedly connected to the center of the bottom of the rotating seat (161). A sliding groove (162) is provided on the surface of the rotating seat (161). A transmission screw (164) is provided in the sliding groove (162). Two sliders (165) are provided outside the transmission screw (164). Two clamping plates (166) are fixedly connected above the two sliders (165). The two clamping plates (166) are provided on both sides of the bottom of the combustion furnace (2). A third motor (163) is provided on one side of the rotating seat (161). The output end of the third motor (163) is fixedly connected to one end of the transmission screw (164).

5. The combustion furnace for uniformly calcining gypsum powder as described in claim 4, characterized in that: The transmission screw (164) is provided with a limit block (17) in the middle, and the threads of the transmission screw (164) at both ends of the limit block (17) are opposite threads.

6. The combustion furnace for uniformly calcining gypsum powder as described in claim 4, characterized in that: The surfaces of the two clamping plates (166) are semi-arc structures, and the combustion furnace (2) is a cylinder, so that the clamping plates (166) fit more closely to the combustion furnace (2) for clamping and fixing.

7. The combustion furnace for uniformly calcining gypsum powder as described in claim 1, characterized in that: The feed hopper door (11) and the discharge hopper door (12) are uniformly fixed with door handles (18) on their outer surfaces.

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