A preheating device for fluidized calcination of gypsum powder
By introducing a delay mechanism into the gypsum powder preheating device, the residence time of the gypsum powder in the preheating box is extended, the problem of uneven preheating is solved, and the preheating uniformity and subsequent calcination efficiency of the gypsum powder are improved.
Patent Information
- Application Number
- CN202421492426.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-27
AI Technical Summary
During the preheating process of the existing preheating device, the gypsum powder stays in the preheating box for a short time, resulting in uneven preheating and affecting subsequent processing and quality.
A preheating device including a preheating box and a delay mechanism is designed. The delay mechanism consists of a spiral metal arc plate delay strip, a telescopic spring and an adjustment ring. Through the spiral design of the delay strip and the telescopic effect of the spring, the residence time of the gypsum powder in the preheating box is extended to achieve more uniform preheating.
By extending the preheating residence time of gypsum powder, a more even preheating of gypsum powder is achieved, improving the efficiency of subsequent calcination and the overall quality of gypsum powder.
Smart Images
Figure CN222729691U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gypsum powder calcination, in particular to a preheating device used for fluidized calcination of gypsum powder. Background Art
[0002] Gypsum is a monoclinic mineral and a hydrate whose main chemical component is calcium sulfate. Gypsum is a widely used industrial material and building material. It can be used as cement retarder, gypsum building products, model making, medical food additive, sulfuric acid production, paper filler, paint filler, etc. During the processing of gypsum powder, in order to eliminate the free water inside the gypsum powder, the gypsum powder needs to be preheated by a preheating device.
[0003] In the existing preheating device, during use, the gypsum powder raw materials stay in the preheating box for a short time, which can easily lead to uneven preheating of the gypsum powder, easily affect the normal progress of subsequent processing, and affect the quality of the gypsum powder. For this reason, we propose a preheating device for fluidized calcination of gypsum powder. Utility Model Content
[0004] The main purpose of the utility model is to provide a preheating device for fluidized calcination of gypsum powder, which can effectively solve the technical problems in the background technology.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a preheating device for fluidized calcination of gypsum powder, comprising a preheating box and a support frame, a feed port is provided at the upper end of the preheating box, a drive motor is provided at the lower end of the preheating box, a heating component is provided inside the preheating box, the lower end of the heating component is fixedly connected to the drive motor, a heating cover is provided on the outside of the heating component, the heating cover is fixedly connected to the preheating box, a heat dissipation plate is provided on the outside of the heating cover, a collecting trough is provided inside the preheating box, a discharge port is provided at the lower end of the preheating box, a delay mechanism is provided inside the preheating box, and the upper end of the delay mechanism is connected to the preheating box; the delay mechanism comprises an adjusting ring, a delay strip is provided at the lower end of the adjusting ring, the delay strip is a spiral metal arc plate, a telescopic spring is provided at the upper end of the delay strip, the telescopic spring is connected to the adjusting ring, two sets of adjusting rods are provided at the upper end of the adjusting ring, the adjusting rods are threadedly connected to the preheating box, and a discharge hole is provided at the upper end of the delay strip.
[0006] Preferably, a sealing strip is provided at one end of the delay strip close to the inner wall of the preheating box, and one end of the sealing strip is fixedly connected to the delay strip, which can increase the sealing between the delay strip and the inner wall of the preheating box and prevent gypsum powder from falling from the gap to the bottom.
[0007] Preferably, the sealing strip is a ceramic fiber braided strip, and one end of the sealing strip is in contact with the inner wall surface of the preheating box.
[0008] Preferably, a guide block is provided at the upper end of the heating hood, and the lower end of the guide block is fixedly connected to the heating hood.
[0009] Preferably, the guide block is a truncated cone-shaped metal block, with the end of the guide block with a smaller diameter facing the feed inlet. By providing the guide block, the gypsum powder can be evenly guided to the surroundings for preheating, which can make the gypsum powder preheating more uniform.
[0010] Preferably, a guide ring is provided at the bottom of the preheating box, and a guide slope is provided at the upper end of the guide ring. By providing the guide ring, the gypsum powder raw material can be guided to the aggregate trough more quickly, which is convenient for discharge.
[0011] Beneficial Effects
[0012] The utility model provides a preheating device for fluidized calcination of gypsum powder, which has the following beneficial effects:
[0013] (1) The preheating device for fluidized calcination of gypsum powder can prolong the residence time of gypsum powder in the preheating box by setting a delay mechanism, so that the preheating of gypsum powder is more uniform, which is convenient for subsequent calcination and improves the overall quality of gypsum powder. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the implementation mode of the utility model or the technical solution in the prior art, the drawings required for use in the implementation mode or the description of the prior art will be briefly introduced below.
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 It is a schematic diagram of the overall cross section of the utility model;
[0017] Figure 3 This is a schematic diagram of the internal structure of the preheating box of the utility model;
[0018] Figure 4 This is a schematic diagram of the delay mechanism structure of the utility model.
[0019] Legend:
[0020] 1. Preheating box; 2. Support frame; 3. Feeding port; 4. Driving motor; 5. Heating component; 6. Heating cover; 7. Heat sink; 8. Collecting trough; 9. Discharging port; 10. Guide block; 11. Guide ring; 12. Delay mechanism; 13. Adjusting ring; 14. Delay strip; 15. Telescopic spring; 16. Feeding hole; 17. Adjusting rod; 18. Sealing strip. DETAILED DESCRIPTION
[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0022] Example 1: A preheating device for fluidized calcination of gypsum powder, such as Figure 1 - Figure 3 As shown, it includes a preheating box 1, which is a hollow shell. A support frame 2 is arranged at the lower end of the preheating box 1. The upper end of the support frame 2 is fixedly connected to the preheating box 1. A feed port 3 is arranged in the center of the upper end of the preheating box 1. The lower end of the feed port 3 is fixedly connected to the preheating box 1. A driving motor 4 is arranged at the lower end of the preheating box 1. The driving motor 4 is fixedly connected to the preheating box 1 through bolts. The driving motor 4 is linearly connected to an external power supply through a wire. A heating component 5 is arranged inside the preheating box 1 relative to the driving motor 4. The lower end of the heating component 5 is fixedly connected to the output end of the driving motor 4. The output end of the driving motor 4 can drive the heating component 5 to rotate. A heating cover 6 is arranged on the outside of the heating component 5. The heating cover 6 is a hollow shell. The heating cover 6 is sleeved on the outside of the heating component 5. The lower end of the heating cover 6 is fixedly connected to the preheating box 1. A heat sink 7 is arranged on the outside of the heating cover 6. The heat sink 7 has good thermal conductivity. Annular metal plate, the outer side of the heat sink 7 is fixedly connected with the heating cover 6, one end of the heat sink 7 extends to the interior of the heating cover 6, a collecting trough 8 is arranged at the lower end of the preheating box 1, a discharge port 9 is arranged at the lower end of the preheating box 1, a control valve is arranged at the outer side of the discharge port 9, and the upper end of the discharge port 9 is communicated with the collecting trough 8, a delay mechanism 12 is arranged inside the preheating box 1, the delay mechanism 12 is installed between the heating cover 6 and the preheating box 1, the upper end of the delay mechanism 12 is connected with the preheating box 1, and the outer side of the delay mechanism 12 contacts with the inner wall of the preheating box 1, a guide block 10 is arranged at the upper end of the heating cover 6, the guide block 10 is a truncated cone-shaped metal block, the end of the guide block 10 with a small diameter is arranged toward the feed port 3, the lower end of the guide block 10 is fixedly connected with the heating cover 6, a guide ring 11 is arranged at the bottom end of the preheating box 1, the guide ring 11 is an annular metal ring, and the upper end of the guide ring 11 is provided with a guiding inclined surface inclined to the collecting trough 8.
[0023] Example 2: A preheating device for fluidized calcination of gypsum powder, based on Example 1 Figure 1 - Figure 3As shown, the delay mechanism 12 includes an adjusting ring 13, which is a circular metal ring. A delay bar 14 is arranged at the lower end of the adjusting ring 13. The delay bar 14 is a spiral metal arc plate. The delay bar 14 is installed at the lower end of the adjusting ring 13. A telescopic spring 15 is arranged at the upper end of the delay bar 14. The lower end of the telescopic spring 15 is fixedly connected to the delay bar 14. The upper end of the telescopic spring 15 is fixedly connected to the adjusting ring 13. Two groups of adjusting rods 17 are arranged at the upper end of the adjusting ring 13. The two groups of adjusting rods 17 are symmetrically arranged at the two ends of the upper end of the adjusting ring 13. On the side, the adjusting rod 17 is threadedly connected to the preheating box 1, and the lower end of the adjusting rod 17 is movably connected to the adjusting ring 13. A feeding hole 16 is arranged at the upper end of the delay bar 14, and the feeding hole 16 is a circular hole. The gypsum powder at the upper end of the delay bar 14 can fall into the lower end through the feeding hole 16. A sealing strip 18 is arranged at one end of the delay bar 14 close to the inner wall of the preheating box 1. The sealing strip 18 is a soft strip woven with spiral ceramic fibers. One end of the sealing strip 18 is fixedly connected to the delay bar 14, and the other end of the sealing strip 18 contacts the inner wall of the preheating box 1.
[0024] It should be noted that the utility model is a preheating device for fluidized calcination of gypsum powder. When in use, the drive motor 4 and the heating component 5 are started, and then the gypsum powder to be processed is put into the preheating box 1 through the feed port 3. The gypsum powder falls under the action of gravity, and after being guided by the guide block 10, it diffuses to the surroundings and falls on the upper end of the delay bar 14. The output end of the drive motor 4 drives the heating component 5 to rotate to uniformly heat the inside of the heating cover 6. The heating cover 6 diffuses the heat into the preheating box 1 through the heat dissipation plate 7, and the gypsum powder on the upper end of the delay bar 14 is preheated. During the process of the guide block 10 guiding the gypsum powder to the upper end of the delay bar 14, the impact force of the falling gypsum powder will drive the telescopic spring 15 to expand and contract, thereby driving the delay bar 14 to vibrate up and down. The gypsum powder at the upper end of the delay bar 14 falls layer by layer through the discharge hole 16 during the vibration. The delay bar 14 is designed in a spiral shape, which can extend the residence time of the gypsum powder in the preheating box 1, so that the gypsum powder preheating is more uniform. The sealing strip 18 set on the outside of the delay bar 14 can increase the sealing between the delay bar 14 and the inner wall of the preheating box 1, and prevent the gypsum powder from falling from the gap to the bottom. By setting the delay mechanism 12, the residence time of the gypsum powder in the preheating box 1 can be extended, so that the gypsum powder preheating is more uniform, which is convenient for subsequent calcination and improves the overall quality of the gypsum powder.
[0025] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A preheating device for fluidized calcination of gypsum powder, comprising a preheating box (1) and a support frame (2), wherein the upper end of the preheating box (1) is provided with a feed port (3), the lower end of the preheating box (1) is provided with a drive motor (4), a heating component (5) is provided inside the preheating box (1), the lower end of the heating component (5) is fixedly connected to the drive motor (4), a heating cover (6) is provided outside the heating component (5), the heating cover (6) is fixedly connected to the preheating box (1), a heat dissipation plate (7) is provided outside the heating cover (6), a collecting trough (8) is provided inside the preheating box (1), and a discharge port (9) is provided at the lower end of the preheating box (1), characterized in that: A delay mechanism (12) is provided inside the preheating box (1), and the upper end of the delay mechanism (12) is connected to the preheating box (1); the delay mechanism (12) comprises an adjusting ring (13), and a delay strip (14) is provided at the lower end of the adjusting ring (13), and the delay strip (14) is a spiral metal arc plate, and a telescopic spring (15) is provided at the upper end of the delay strip (14), and the telescopic spring (15) is connected to the adjusting ring (13); two groups of adjusting rods (17) are provided at the upper end of the adjusting ring (13), and the adjusting rods (17) are threadedly connected to the preheating box (1), and a feeding hole (16) is provided at the upper end of the delay strip (14).
2. A preheating device for fluidized calcination of gypsum powder according to claim 1, characterized in that: A sealing strip (18) is provided at one end of the delay strip (14) close to the inner wall of the preheating box (1), and one end of the sealing strip (18) is fixedly connected to the delay strip (14).
3. A preheating device for fluidized calcination of gypsum powder according to claim 2, characterized in that: The sealing strip (18) is a ceramic fiber braided strip, and one end of the sealing strip (18) is in contact with the inner wall surface of the preheating box (1).
4. A preheating device for fluidized calcination of gypsum powder according to claim 1, characterized in that: A guide block (10) is provided at the upper end of the heating cover (6), and the lower end of the guide block (10) is fixedly connected to the heating cover (6).
5. A preheating device for fluidized calcination of gypsum powder according to claim 4, characterized in that: The guide block (10) is a truncated cone-shaped metal block, and the end of the guide block (10) with a smaller diameter faces the feed port (3).
6. A preheating device for fluidized calcination of gypsum powder according to claim 1, characterized in that: A guide ring (11) is provided at the bottom of the interior of the preheating box (1), and a guiding inclined surface is provided at the upper end of the guide ring (11).