Anhydrite calcination system

Abstract

The application discloses anhydrite calcining system and relates to the technical field of gypsum processing. The anhydrite calcining system comprises a calcining assembly and a crushing assembly. A discharging port is arranged on the calcining assembly. A crushing inlet is arranged on the crushing assembly. A ring-shaped support frame is rotatably arranged on the discharging port. A sealing base plate is installed on the ring-shaped support frame through a sealing connecting assembly. Soft pipes are connected to the ring-shaped support frame through a pipeline connecting assembly. The other ends of the soft pipes are connected to the crushing inlet. The crushing assembly and the calcining assembly are connected through the soft pipes. When the calcining is finished and the discharging is performed, the gypsum product obtained from the calcining assembly is guided from the discharging port to the crushing inlet position. The dust in the product is also limited between the soft pipes. In this process, the dust can be prevented from being raised into the air.

Description

Technical Field

[0001] This invention relates to the field of gypsum processing technology, specifically to an anhydrous gypsum calcination system. Background Technology

[0002] Anhydrous gypsum is a type of hard gypsum, a building material with high strength and low water absorption. When used, it needs to be mixed with an appropriate amount of water to re-lithotomize it into dihydrate gypsum, thus forming a solid structure during construction. In the processing of anhydrous gypsum, the prepared gypsum ore needs to be placed in a calcining furnace for calcination. During this process, the water of crystallization in the gypsum evaporates, forming wastewater calcium sulfate. After calcination, the resulting product is crushed and fed into a crusher and a grinding mill for fine crushing. The powder is then classified by sieving to remove excessively coarse particles.

[0003] For example, in the patent document with application number 202210487294.X, an automatic integrated machine for producing anhydrous gypsum and its production process are disclosed. Specifically, the roller-driven pressure plate forms a negative pressure in the upper mold groove, and the dust generated by the gypsum ore during the crushing process is sucked into the air intake channel through the air inlet. The sponge plate in the air intake channel can filter the dust, thereby realizing the collection of dust during the crushing process.

[0004] In the above process, the calcination of anhydrous gypsum is mostly based on a rotary kiln, with the outlet of the rotary kiln at the other end, which is the discharge end. The discharge end is usually equipped with a discharge device to remove the calcined material from the rotary kiln, including gravity discharge, screw conveyor, pneumatic conveyor or vibrating conveyor.

[0005] The pneumatic conveying system uses an air compressor to generate pressurized gas, which pushes the material to the discharge port. During the high-temperature calcination process in the calcining furnace, the outer surface of the gypsum ore is exposed to high temperatures, causing some of it to peel off. This peeling off generates a large amount of powder. As the powder is transferred to the crushing device, it easily disperses into the outside air, affecting the net content of the finished product and impacting the air quality. Summary of the Invention

[0006] The purpose of this invention is to provide an anhydrous gypsum calcination system.

[0007] The technical problem solved by this invention is to address the issue in the prior art where, when raw materials are transferred from a calcining furnace to a crusher, dust disperses into the air, affecting the net content of the finished product and air quality.

[0008] The present invention can be achieved through the following technical solution: an anhydrous gypsum calcination system, comprising a calcination component and a crushing component, wherein the calcination component is provided with a feeding port, the crushing component is provided with a crushing inlet, an annular support frame is rotatably provided on the feeding port, a sealing base plate is installed on the annular support frame through a sealing connection component, and a flexible pipe is connected to the annular support frame through a pipe connection component, the other end of the flexible pipe being connected to the crushing inlet.

[0009] A further technical improvement of the present invention is that a sealing plug is fixed on the side of the sealing substrate facing the feed port.

[0010] A further technical improvement of the present invention is that: the sealing connection assembly includes a first sliding groove, the first sliding groove is formed on the sealing substrate, a first spring-loaded post is slidably disposed on the first sliding groove, a mating base is fixed on the annular support frame, a second sliding groove is formed on the mating base, and the first spring-loaded post and the second sliding groove are connected by elastic force.

[0011] A further technical improvement of the present invention is that: a first spring is fixed inside the first slide groove, the output end of the first spring is connected to the first pop-up column, a second fixing plate is fixed inside the second slide groove, a push rod is slidably arranged on the second fixing plate, the two ends of the push rod are a push plate and a second pop-up plate respectively, a second spring is fixed between the second pop-up plate and the second fixing plate, and the second pop-up plate cooperates with the first pop-up column.

[0012] A further technical improvement of the present invention is that: the bottom of the annular support frame is provided with an installation groove, and the installation groove and the flexible pipe are detachably connected.

[0013] A further technical improvement of the present invention is that: the mounting groove is provided in multiple sets, the mounting groove is fixed with a mounting slider, the mounting slider and the mounting groove are arc-shaped, and the cross-section of the mounting slider is "T"-shaped, the end of the flexible pipe is fixed with an arc-shaped support frame, the arc-shaped support frame is fixed with an arc-shaped slider, and the arc-shaped slider and the mounting slider are slidably connected.

[0014] A further technical improvement of the present invention is that: the calcination assembly includes a heating sleeve, the heating sleeve is rotatably mounted on a bottom support frame, a heating strip is rotatably arranged inside the heating sleeve, the heating strip is mounted on a rotating rod, and the rotating rod is driven by an internal motor.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This application connects the crushing component and the calcining component via flexible pipes. After calcination, when feeding material, the gypsum product obtained from the calcining component is guided from the feeding port to the crushing inlet. The dust in the product is also confined within the flexible pipes. This process can prevent dust from being released into the air. Furthermore, the sealing connection component in this application can install a sealing substrate. When the calcining component is calcining, the sealing substrate can block the feeding port, achieving a seal at the feeding substrate position during the production process. During this process, the gypsum raw material is collected inside the calcining component, and the dust will not be released into the air, thus solving the problem of poor air quality caused by dust being released into the air in the prior art.

[0017] 2. This application employs a sealed connection assembly. During use, by controlling the position of the first spring-loaded column, when the first spring-loaded column enters the interior of the second slide groove, the sealing substrate can be limited. When the first spring-loaded column moves out of the interior of the second slide groove, the sealing substrate can be removed. During this process, by quickly removing the sealing substrate, the flexible pipe can be installed, ensuring rapid replacement of the flexible pipe and the sealing substrate. During use, it can prevent damage to the flexible pipe due to excessively high temperatures during the calcination process, and the calcination furnace is isolated under the action of the sealing substrate.

[0018] 3. In this application, the arc-shaped slider is installed by sliding it onto the mounting slider during use. At the same time, when the annular support frame rotates relative to the calcining component, the arc-shaped support frame is restricted between the annular support frame and the calcining component, which prevents the soft pipe from falling during material feeding. Therefore, this application can ensure the stability of the soft pipe installation and the normal feeding of the soft pipe. Attached Figure Description

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the annular support frame structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 A magnified view of a section at point A in the middle;

[0022] Figure 3 This is a schematic diagram showing the positions of the crushing component and the calcining component of the present invention;

[0023] Figure 4 This is a schematic diagram of the calcination component structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the crushing component of the present invention;

[0025] Figure 6 This is a schematic diagram showing the location of the transfer port in this invention;

[0026] Figure 7 This is a schematic diagram of the through-groove position of the present invention;

[0027] Figure 8 This is a schematic diagram showing the relative positions of the flexible pipes in this invention.

[0028] In the diagram: 1. Crushing assembly; 11. Crushing inlet; 12. Horizontal screw conveyor assembly; 13. Screening assembly; 14. Screening mesh; 15. Screw feeder; 16. Transfer port; 2. Calcination assembly; 21. Bottom support frame; 22. Internal motor; 23. Rotary support frame; 24. Rotary motor; 25. External gear; 26. Rotating rod; 27. Heating sleeve; 28. Rotating support base; 31. Annular support frame; 32. 33. Sealing base plate; 34. Sealing plug; 35. Rotating arm; 36. First spring; 37. First slide groove; 38. First pop-up column; 39. Second pop-up plate; 310. Push plate; 311. Push rod; 312. Second fixing plate; 313. Second spring; 314. Mounting slider; 315. Through groove; 316. Mounting groove; 317. Arc-shaped support frame; 318. Arc-shaped slider; 319. Flexible pipe. Detailed Implementation

[0029] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0030] Please see Figure 1-8 As shown, an anhydrous gypsum calcination system includes a crushing component 1 and a calcination component 2. Gypsum ore is placed inside the calcination component 2 for calcination, and after calcination, the raw material is output to the crushing component 1 through an output structure. The crushing component 1 is used to crush the calcined gypsum ore to obtain anhydrous gypsum product.

[0031] Specifically, to ensure sufficient calcination of the gypsum ore, the calcination assembly 2 in this application includes a bottom support frame 21, on which a rotating support seat 28 is fixedly installed. Multiple sets of rotating support seats 28 are provided, and they are used to rotatably connect with the heating shell 27 to achieve rotation of the heating shell 27. During this process, the heating shell 27 acts as the outer shell of the rotary kiln. An external gear 25 is fixed on the heating shell 27, and a rotary motor 24 is fixed on the bottom support frame 21. A rotary motor 24 drives a rotary gear, which meshes with an external gear 25. When the rotary motor 24 is in operation, it drives the rotary gear to rotate, thereby driving the external gear 25 to rotate under the rotation limit of the rotating support 28. During this process, the rotation of the heating shell 27 drives the gypsum ore inside the heating shell 27 to rotate. Under the action of gravity, the gypsum ore is in a state of motion, which can fully heat the gypsum ore from multiple angles, ensuring that the moisture inside the gypsum ore can be separated.

[0032] A rotating support frame 23 is fixed on the bottom support frame 21, and an internal motor 22 is fixed on the rotating support frame 23. A rotating rod 26 is fixed to the output end of the internal motor 22, and multiple heating bars are fixed on the rotating rod 26. The internal motor 22 drives the rotating rod 26 to rotate the heating bars inside the heating shell 27. At this time, the rotation direction of the heating bars is opposite to the rotation direction of the heating shell 27, which can accelerate the movement speed of the gypsum ore, so that the gypsum ore can fully contact the heating bars and fully heat all parts of the gypsum ore.

[0033] The crushing assembly 1 includes a crushing inlet 11, which is connected to a crusher. The output end of the crusher is connected via a transverse spiral conveyor assembly 12, the output end of which is connected to a screening assembly 13. Gypsum materials meeting the required size are screened out through the screening assembly 13. Specifically, the transverse spiral conveyor assembly 12 includes a spiral feeder 15, which is rotatably mounted on a screening screen 14. The spiral feeder 15 is used to screen the crushed material through the screening screen 14. Due to the pressure exerted by the spiral feeder 15, the material is pressed onto the screening screen 14 under pressure. Some larger materials are crushed and pass through the screening screen 14, then discharged through the transfer port 16.

[0034] In order to connect the crushing component 1 and the calcining component 2, a feeding control component is rotatably installed at the feeding port of the calcining component 2. The feeding control component is used to open and close the feeding port. When closed, it can prevent heat from flowing out, and when opened, it can accelerate the full feeding of gypsum material.

[0035] Therefore, the feeding control component includes an annular support frame 31, on which a through groove 315 is provided. A rotating arm 34 is fixed on the annular support frame 31, and the rotating arm 34 is rotatably mounted on the heating sleeve 27. The side of the annular support frame 31 away from the rotating arm 34 is fixed to the heating sleeve 27 by bolts, thereby realizing the installation and fixation of the annular support frame 31.

[0036] The annular support frame 31 is connected to the sealing base plate 32 and the flexible pipe 319 via a sealing connection assembly and a pipe connection assembly, respectively. The sealing connection assembly controls the sealing plate to block the feed port, preventing the gypsum ore from falling out of the feed port during heat treatment. The flexible pipe 319 is connected to the feed port, with its other end installed on the crushing inlet 11, to directly transfer the calcined gypsum material to the crushing assembly 1, avoiding dust generation during gypsum transfer and preventing environmental impact.

[0037] A sealing plug 33 is fixed on the side of the sealing substrate 32 facing the discharge port to seal the discharge port and prevent excessive dust from being generated during the heating process due to the movement of the gypsum raw material and the rotation of the heating bar driven by the rotating rod 26. Therefore, the sealing plug 33 is used to perform preliminary sealing of the discharge port.

[0038] The sealing connection assembly includes a first slide groove 36, in which the sealing base plate 32 has a first slide groove 36 on its side. A first spring 35 is fixed inside the first slide groove 36, and a first sliding plate 37 is fixed at the end of the first spring 35. The first sliding plate 37 and the first slide groove 36 are slidably connected. A first pop-up post 38 is fixed on the side of the first sliding plate 37. A mating base is fixed on the annular support frame 31, and a second slide groove is provided on the mating base. A second fixing plate 312 is fixed inside the second slide groove, and a push rod 311 is slidably arranged on the second fixing plate 312. A push plate 310 and a second pop-up plate 39 are respectively provided on both sides of the push rod 311. The second pop-up plate 39 is used to cooperate with the first pop-up post 38. A second spring 313 is fixed between the second pop-up plate 39 and the second fixing plate 312.

[0039] When the sealing substrate 32 is installed, it is first passed through the inside of the annular support frame 31. At this time, the first spring-lifting post 38 on the side of the sealing substrate 32 is squeezed and moved into the inside of the first slide groove 36. That is, the first spring 35 is squeezed until the first spring-lifting post 38 reaches the position of the second slide groove. At this time, under the action of the first spring 35, the first spring-lifting post 38 enters the inside of the second slide groove until the first spring-lifting post 38 reaches the position of the second spring-lifting plate 39. At this time, the first spring 35 and the second spring 313 reach equilibrium, realizing the installation limiting function of the sealing substrate 32.

[0040] When the sealing substrate 32 is removed, the push plate 310 is pushed first, and the push rod 311 pushes the second spring plate 39. At this time, the second spring 313 is stretched, and the first spring column 38 is squeezed into the interior of the first slide groove 36. Then the sealing substrate 32 is pulled down, and the sealing substrate 32 and the annular support frame 31 are separated.

[0041] The pipe connection assembly includes an installation groove 316, which is evenly provided at the bottom of the annular support frame 31. An installation slider 314 is installed inside the installation groove 316. At this time, the installation groove 316 and the installation slider 314 are arc-shaped. The cross-section of the installation slider 314 is "T"-shaped. An arc-shaped support frame 317 is provided on the outside of the flexible pipe 319. The arc-shaped support frame 317 is made of rubber. An arc-shaped slider 318 is fixed on the arc-shaped support frame 317. The arc-shaped slider 318 is used to slide and connect with the installation slider 314.

[0042] Specifically, when installing the flexible pipe 319, the arc-shaped support frame 317 is first passed through the through groove 315. At this time, the arc-shaped support frame 317 undergoes a slight deformation. Then, the arc-shaped slider 318 is placed inside the installation groove 316. By rotating the arc-shaped support frame 317, the arc-shaped slider 318 and the installation slider 314 are slidably connected. Then, the annular support frame 31 is rotated and installed at the discharge port to complete the installation of the flexible pipe 319. In use, powder and gypsum products are fed into the flexible pipe 319 through the discharge port and directly input into the crushing inlet 11, avoiding dust from being dispersed into the air during transfer.

[0043] In use, this invention first places the gypsum raw material into the calcination assembly 2 for calcination. Specifically, when the raw material is added into the heating sleeve 27, the rotary motor 24 drives the rotary gear, which in turn drives the external gear 25 to rotate, thereby causing the heating sleeve 27 to rotate on the rotating support 28. During this process, the internal motor 22 drives the rotating rod 26, which in turn drives the heating strip to rotate. The rotation direction of the heating strip is opposite to the rotation direction of the heating sleeve 27, thereby fully heating the gypsum raw material and causing the crystal water inside the gypsum raw material to precipitate out.

[0044] After calcination, the bolts are removed, allowing the annular support frame 31 to rotate under the action of the rotating arm 34. By pushing the push plate 310, the push rod 311 pushes the second spring plate 39. At this time, the second spring 313 is stretched, and the first spring column 38 is squeezed into the interior of the first slide groove 36. At this time, the sealing base plate 32 is pulled down, and the sealing base plate 32 and the annular support frame 31 are separated.

[0045] First, the arc-shaped support frame 317 is passed through the inside of the through groove 315. At this time, the arc-shaped support frame 317 is subjected to a slight deformation. Then, the arc-shaped slider 318 is placed inside the mounting groove 316. By rotating the arc-shaped support frame 317, the arc-shaped slider 318 and the mounting slider 314 are slidably connected. Then, by rotating the annular support frame 31 to be installed at the feed port, the soft pipe 319 is installed. In use, powder and gypsum products are fed into the soft pipe 319 through the feed port and directly input into the crushing inlet 11, avoiding dust from being scattered into the air during transfer.

[0046] After the gypsum product is crushed by the crusher, it is conveyed by the transverse spiral conveyor assembly 12, which presses the gypsum product onto the screen 14 with a certain pressure. Some of the larger materials are crushed and pass through the screen 14, and are then discharged through the transfer port 16.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A calcination system for anhydrous gypsum, comprising a calcination assembly (2) and a crushing assembly (1), wherein the calcination assembly (2) is provided with a feeding port and the crushing assembly (1) is provided with a crushing inlet (11), characterized in that: A ring-shaped support frame (31) is rotatably provided on the feed port. A sealing base plate (32) is installed on the ring-shaped support frame (31) through a sealing connection assembly. A soft pipe (319) is connected to the ring-shaped support frame (31) through a pipe connection assembly. The other end of the soft pipe (319) is connected to the crushing inlet (11). The sealing connection assembly includes a first slide groove (36), which is formed on the sealing base plate (32). A first spring-loaded post (38) is slidably arranged on the first slide groove (36). A mating base is fixed on the annular support frame (31). A second slide groove is formed on the mating base. The first spring-loaded post (38) and the second slide groove are connected by elastic force. A first spring (35) is fixed inside the first slide groove (36). The output end of the first spring (35) is connected to the first pop-up column (38). A second fixing plate (312) is fixed inside the second slide groove. A push rod (311) is slidably arranged on the second fixing plate (312). The two ends of the push rod (311) are a push plate (310) and a second pop-up plate (39) respectively. A second spring (313) is fixed between the second pop-up plate (39) and the second fixing plate (312). The second pop-up plate (39) and the first pop-up column (38) cooperate. The bottom of the ring support frame (31) is provided with an installation groove (316), and the installation groove (316) and the flexible pipe (319) are detachably connected.

2. The anhydrous gypsum calcination system according to claim 1, characterized in that, A sealing plug (33) is fixed on the side of the sealing substrate (32) facing the feed port.

3. The anhydrous gypsum calcination system according to claim 1, characterized in that, The mounting groove (316) is provided in multiple sets. The mounting groove (316) is fixed with a mounting slider (314). The mounting slider (314) and the mounting groove (316) are arc-shaped, and the cross-section of the mounting slider (314) is "T"-shaped. The end of the flexible pipe (319) is fixed with an arc-shaped support frame (317). An arc-shaped slider (318) is fixed on the arc-shaped support frame (317). The arc-shaped slider (318) and the mounting slider (314) are slidably connected.

4. The anhydrous gypsum calcination system according to claim 1, characterized in that, The calcination assembly (2) includes a heating shell (27), which is rotatably mounted on a bottom support frame (21). A heating strip is rotatably mounted inside the heating shell (27), and the heating strip is mounted on a rotating rod (26), which is driven by an internal motor (22).

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