Preheating device for lime production

Abstract

The utility model relates to the field of lime production, in particular to a preheating device for lime production. Comprising a preheating box, a preheating cavity is formed in the preheating box, two sets of servo motors are symmetrically arranged at the top of the preheating box, the output ends of the two sets of servo motors penetrate through the preheating box and then are in transmission connection with a set of connecting rods, and a set of fixing discs is installed at the bottom of each set of connecting rods; a plurality of sets of heat conduction pipes are installed at the bottom of each set of fixing discs in an annular array mode, a set of heating mechanisms are arranged in each set of heat conduction pipes, two sets of ventilation openings are symmetrically formed in the edge of the top of the preheating box, a set of dustproof nets are arranged in each set of ventilation openings, and a material storage box is arranged over the preheating box; a plurality of sets of supporting columns are distributed at the bottom of the storage box in an annular array mode, and the bottom of each set of supporting columns is installed on the top of the preheating box. According to the embodiment, materials are uniformly preheated, and the production quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lime powder production, in particular to a preheating device used for lime production. Background Art

[0002] In actual production, the calcination temperature of quicklime is often raised to 1000-1100℃ to accelerate decomposition. Due to the large size of limestone raw materials or the uneven temperature distribution in the kiln during calcination, lime often contains underfired lime and overfired lime. The calcium carbonate in underfired lime is not completely decomposed, lacking adhesion when used, and overfired lime has a dense structure, and the surface is often covered with a layer of molten material, which dissolves very slowly. Since the production raw materials often contain magnesium carbonate, quicklime also contains a minor component, magnesium oxide. According to the content of magnesium oxide, quicklime is divided into calcium lime and magnesium lime. However, many limes are not preheated before calcining, which will cause some quicklime to be damp and directly enter the calcining furnace, so that the finished product will be unqualified, and some preheating devices are very simple, only local heating is performed, and there is no global heating and drying of the moisture in the quicklime. In addition, quicklime will enter the ventilation pipe during stirring, making the hot air blower unable to work.

[0003] After searching, in the prior art, China Patent Publication No.: CN214088306U, Authorization Publication Date: 2021-08-31, discloses a preheating device for white lime production, including a base, a casing and a movable plate, wherein brackets are fixedly connected on both sides above the base, a casing is fixedly connected above the bracket, a ventilation pipe is fixedly connected to the outer side of the lower left side of the casing, a filter is fixedly connected inside the ventilation pipe, a feed pipe is fixedly connected to the outer side above the casing, an air outlet pipe is fixedly connected to the outer side of the right side of the casing, a rotating motor is fixedly connected to the upper part of the casing, a threaded rod is fixedly connected to the lower part of the rotating motor, a fixed bearing is fixedly connected to the outer side of the threaded rod, and paddles are fixedly connected to both sides of the outer side of the fixed bearing, an electric telescopic machine is fixedly connected to the left side of the base, a fixed rod is fixedly connected to the upper part of the electric telescopic machine, a support plate is fixedly connected to the upper part of the fixed rod, a telescopic rod is fixedly connected to the right side of the electric telescopic machine, a roller bearing is fixedly connected to the other end of the telescopic rod, a support rod is fixedly connected to the lower part of the roller bearing, a base is slidably connected to the lower part of the support rod, and a movable rod is fixedly connected to the right side of the roller bearing. The above embodiment can preheat the white lime by providing the ventilation pipe and the air outlet pipe.

[0004] However, the device still has the following defects: the above embodiment does not have the effect of uniformly preheating the material. If the material cannot be uniformly preheated, the degree of heating of the material will be different, thereby reducing the production quality. Utility Model Content

[0005] In view of the above problems, the utility model provides a preheating device for lime production, comprising a preheating box, a preheating chamber is provided in the preheating box, two groups of servo motors are symmetrically arranged on the top of the preheating box, the output ends of the two groups of servo motors are both connected to a group of connecting rods after passing through the preheating box, a group of fixed disks are installed at the bottom of each group of connecting rods, a plurality of groups of heat conducting pipes are installed in a circular array at the bottom of each group of fixed disks, and a group of heating mechanisms are arranged in each group of heat conducting pipes;

[0006] Two groups of ventilation holes are symmetrically provided at the top edge of the preheating box, and a group of dustproof nets are provided in each group of ventilation holes. A material storage box is provided directly above the preheating box, and a plurality of groups of support columns are distributed in a circular array at the bottom of the material storage box, and the bottom of each group of support columns is installed on the top of the preheating box.

[0007] Furthermore, a delivery pipe is connected to the bottom center of the storage box, and the other end of the delivery pipe is connected to the top center of the preheating box. An electronic current meter and an electric gate valve are fixedly mounted on the outer wall of the delivery pipe, and the electric gate valve is located above the electronic current meter.

[0008] Furthermore, a feed pipe is connected to the top center of the storage box, and a sealing cover is installed on the top of the feed pipe.

[0009] Furthermore, a control panel is installed on the outer wall of the preheating box, and an electric door machine is installed at the bottom center of the preheating box.

[0010] Furthermore, a collecting box is installed at the bottom of the preheating box, an empty slot is opened at the center of the top of the collecting box, and a cavity is opened on one side wall of the collecting box.

[0011] Furthermore, a collection box is provided in the cavity, the bottom of the collection box slides and fits on the bottom inner wall of the collection box, a heat insulation board is installed on one side wall of the collection box, two groups of handles are symmetrically installed at the edge of one side wall of the heat insulation board away from the collection box, and the two groups of handles are located at one end of the collection box.

[0012] Furthermore, a group of transparent observation windows are vertically embedded in the center of a side wall of the heat insulation board away from the collection box, a fixing frame is arranged in the cavity, and two groups of card blocks are symmetrically arranged at both ends of the fixing frame.

[0013] Furthermore, two groups of card slots are symmetrically provided on the inner walls on both sides corresponding to each other of the collection box, and the two groups of card blocks are movably connected in the two groups of card slots respectively, and the fixed frame is located above the collection box.

[0014] Furthermore, a storage groove is provided at the top center of the fixed frame, a mounting block is provided in the storage groove, a screen is connected between the mounting block and the fixed frame, and a vibration motor is provided at the bottom of the mounting block.

[0015] The beneficial effects of the utility model are:

[0016] 1. After the material enters the preheating chamber, the heating mechanism and servo motor are started. The vent absorbs the heat emitted by the heating mechanism and conducts it to the material. The servo motor drives the connecting rod to rotate while driving the fixed plate to rotate. The fixed plate drives the heat pipe and the heating mechanism to move, preheating the material evenly and improving the production quality.

[0017] 2. The electronic flow meter and electric gate valve are started, and the material enters the preheating chamber through the conveying pipe. The electronic flow meter detects the amount of material output. When the amount reaches a certain amount, the electronic flow meter sends information to the electric gate valve, and the electric gate valve is closed, which has the effect of quantitative delivery and avoids too much or too little material affecting the preheating effect.

[0018] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of a preheating device according to an embodiment of the utility model is shown;

[0021] Figure 2 A cross-sectional schematic diagram of a preheating device according to an embodiment of the utility model is shown;

[0022] Figure 3 A cross-sectional schematic diagram of a collection box according to an embodiment of the utility model is shown;

[0023] Figure 4 A schematic diagram of the screen structure according to an embodiment of the utility model is shown;

[0024] Figure 5 An enlarged view of part A according to an embodiment of the utility model is shown.

[0025] In the figure: 1. preheating box; 2. preheating chamber; 3. servo motor; 4. connecting rod; 5. fixing plate; 6. heat pipe; 7. heating mechanism; 8. ventilation port; 9. dust screen; 10. storage box; 11. support column; 12. conveying pipe; 13. electronic current meter; 14. feeding pipe; 15. sealing cover; 16. collecting box; 17. empty slot; 18. cavity; 19. collecting box; 20. heat insulation board; 21. handle; 22. transparent observation window; 23. fixing frame; 24. card block; 25. card slot; 26. storage slot; 27. mounting block; 28. screen; 29. ​​vibration motor; 30. control panel; 31. electric door machine; 32. electric valve. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The present utility model embodiment provides a preheating device for lime production, including a preheating box 1, exemplarily, as Figure 2 and Figure 5 As shown, a preheating chamber 2 is provided in the preheating box 1, and two groups of servo motors 3 are symmetrically arranged on the top of the preheating box 1. The output ends of the two groups of servo motors 3 are connected to a group of connecting rods 4 after passing through the preheating box 1. A group of fixed disks 5 are installed at the bottom of each group of connecting rods 4. A plurality of groups of heat conducting pipes 6 are installed in a circular array at the bottom of each group of fixed disks 5. A group of heating mechanisms 7 are arranged in each group of heat conducting pipes 6. Two groups of vents 8 are symmetrically provided at the top edge of the preheating box 1. A group of dustproof nets 9 are arranged in each group of vents 8. A A material storage box 10 is provided, and a plurality of groups of support columns 11 are distributed in a circular array at the bottom of the material storage box 10, and the bottom of each group of the support columns 11 is installed on the top of the preheating box 1. A delivery pipe 12 is connected to the center of the bottom of the material storage box 10, and the other end of the delivery pipe 12 is connected to the center of the top of the preheating box 1. An electronic current meter 13 and an electric gate valve 32 are fixedly sleeved on the outer wall of the delivery pipe 12, respectively, and the electric gate valve 32 is located above the electronic current meter 13. A feed pipe 14 is connected to the center of the top of the material storage box 10, and a sealing cover 15 is installed on the top of the feed pipe 14.

[0028] For example, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a control panel 30 is installed on the outer wall of the preheating box 1, an electric door machine 31 is installed at the bottom center of the preheating box 1, a collecting box 16 is installed at the bottom of the preheating box 1, a slot 17 is opened at the top center of the collecting box 16, a cavity 18 is opened on one side wall of the collecting box 16, a collecting box 19 is arranged in the cavity 18, the bottom of the collecting box 19 is slidably fitted on the bottom inner wall of the collecting box 16, a heat insulation board 20 is installed on one side wall of the collecting box 19, two groups of handles 21 are symmetrically installed at the edge of one side wall of the heat insulation board 20 away from the collecting box 19, and the two groups of handles 21 are located at one end of the collecting box 16, the A group of transparent observation windows 22 are vertically embedded in the center of one side wall of the insulation board 20 away from the collection box 19, a fixed frame 23 is arranged in the cavity 18, two groups of card blocks 24 are symmetrically arranged at both ends of the fixed frame 23, two groups of card slots 25 are symmetrically opened on the inner walls on both sides corresponding to the collection box 16, and the two groups of card blocks 24 are movably connected in the two groups of card slots 25 respectively, the fixed frame 23 is located above the collection box 19, a storage groove 26 is opened at the top center of the fixed frame 23, a mounting block 27 is arranged in the storage groove 26, a screen 28 is connected between the mounting block 27 and the fixed frame 23, and a vibration motor 29 is arranged at the bottom of the mounting block 27.

[0029] Working principle: Pour the material into the feed pipe 14 by opening the sealing cover 15. After passing through the feed pipe 14, the material enters the storage box 10 for storage. The amount of discharge is set through the control panel 30. The electronic flow meter 13 and the electric gate valve 32 are started. The material enters the preheating chamber 2 through the conveying pipe 12. The electronic flow meter 13 detects the amount of output material. When the amount reaches a certain amount, the electronic flow meter 13 sends information to the electric gate valve 32, and the electric gate valve 32 is closed, which has the effect of quantitative feeding. After the material enters the preheating chamber 2, the heating mechanism 7 and the servo motor 3 are started, and the vent 8 absorbs the heat emitted by the heating mechanism 7 and conducts it to the material. The servo motor 3 drives the connecting rod 4 to rotate and drives the fixed plate 5 to rotate, and the fixed plate 5 is fixed. The fixed plate 5 drives the heat pipe 6 and the heating mechanism 7 to move, and the material is preheated evenly. After the preheating is completed, the electric door machine 31 is started, and the material passes through the servo motor 3 and then passes through the empty slot 17 into the collection box 16, falls into the storage slot 26, and is screened by the screen 28 and enters the collection box 19 to be collected. The vibration motor 29 drives the screen 28 to vibrate, speeding up the screening time, and the collection situation in the collection box 19 is viewed through the transparent observation window 22. The handle 21 is pulled to drive the insulation board 20 to move and the collection box 19 to move at the same time, and the material collected in the collection box 19 is processed, and the fixed frame 23 is pulled to drive the block 24 to slide in the slot 25, and the fixed frame 23 is moved out of the cavity 18 to process the unscreened material.

[0030] After the material enters the preheating chamber 2, the heating mechanism 7 and the servo motor 3 are started, and the vent 8 absorbs the heat emitted by the heating mechanism 7 and conducts it to the material. The servo motor 3 drives the connecting rod 4 to rotate while driving the fixed disk 5 to rotate. The fixed disk 5 drives the heat pipe 6 and the heating mechanism 7 to move, so that the material is evenly preheated, thereby improving the production quality.

[0031] The electronic current meter 13 and the electric gate valve 32 are started, and the material enters the preheating chamber 2 through the conveying pipe 12. The electronic current meter 13 detects the amount of material output. When the amount reaches a certain amount, the electronic current meter 13 sends information to the electric gate valve 32, and the electric gate valve 32 is closed, which achieves the effect of quantitative delivery and avoids too much or too little material affecting the preheating effect.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A preheating device for lime production, comprising a preheating box (1), characterized in that: A preheating chamber (2) is provided in the preheating box (1), and two groups of servo motors (3) are symmetrically arranged on the top of the preheating box (1). The output ends of the two groups of servo motors (3) penetrate the preheating box (1) and are connected to a group of connecting rods (4) for transmission. A group of fixed disks (5) are installed at the bottom of each group of connecting rods (4). A plurality of groups of heat conducting pipes (6) are installed in a ring array at the bottom of each group of fixed disks (5), and a group of heating mechanisms (7) are arranged in each group of heat conducting pipes (6); Two groups of ventilation holes (8) are symmetrically provided at the top edge of the preheating box (1), and a group of dustproof nets (9) are provided in each group of ventilation holes (8). A material storage box (10) is provided directly above the preheating box (1), and a plurality of groups of support columns (11) are distributed in a circular array at the bottom of the material storage box (10), and the bottom of each group of support columns (11) is installed on the top of the preheating box (1).

2. The preheating device for lime production according to claim 1, characterized in that: The bottom center of the material storage box (10) is connected to a delivery pipe (12), and the other end of the delivery pipe (12) is connected to the top center of the preheating box (1). An electronic current meter (13) and an electric gate valve (32) are fixedly sleeved on the outer wall of the delivery pipe (12), and the electric gate valve (32) is located above the electronic current meter (13).

3. The preheating device for lime production according to claim 2, characterized in that: The top center of the material storage box (10) is connected to a feed pipe (14), and a sealing cover (15) is installed on the top of the feed pipe (14).

4. The preheating device for lime production according to claim 1, characterized in that: A control panel (30) is installed on the outer wall of the preheating box (1), and an electric door machine (31) is installed at the bottom center of the preheating box (1).

5. The preheating device for lime production according to claim 1, characterized in that: A collecting box (16) is installed at the bottom of the preheating box (1), a hollow groove (17) is opened at the center of the top of the collecting box (16), and a cavity (18) is opened on one side wall of the collecting box (16).

6. The preheating device for lime production according to claim 5, characterized in that: A collection box (19) is arranged in the cavity (18), the bottom of the collection box (19) is slidably fitted on the bottom inner wall of the collection box (16), a heat insulation board (20) is installed on one side wall of the collection box (19), and two groups of handles (21) are symmetrically installed at the edge of a side wall of the heat insulation board (20) away from the collection box (19), and the two groups of handles (21) are located at one end of the collection box (16).

7. The preheating device for lime production according to claim 6, characterized in that: A group of transparent observation windows (22) are vertically embedded in the center of a side wall of the heat insulation board (20) away from the collection box (19), a fixing frame (23) is arranged in the cavity (18), and two groups of card blocks (24) are symmetrically arranged at both ends of the fixing frame (23).

8. The preheating device for lime production according to claim 7, characterized in that: Two groups of card slots (25) are symmetrically provided on the inner walls on both sides corresponding to each other of the collection box (16), and the two groups of card blocks (24) are respectively movably connected in the two groups of card slots (25), and the fixed frame (23) is located above the collection box (19).

9. The preheating device for lime production according to claim 8, characterized in that: A storage groove (26) is provided at the center of the top of the fixed frame (23), a mounting block (27) is provided in the storage groove (26), a screen (28) is connected between the mounting block (27) and the fixed frame (23), and a vibration motor (29) is provided at the bottom of the mounting block (27).

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