Magnesia raw material mixing equipment

Abstract

The utility model discloses magnesia raw material mixing equipment which comprises a box body, a powder box fixedly mounted on the side wall of the box body through a material conveying pipe and a valve fixedly mounted at the bottom end of the box body, and is characterized by further comprising a driving assembly, a stirring assembly, a feeding assembly and a primary mixing assembly, wherein the driving assembly is fixedly installed at the top end of the box body, the stirring assembly is fixedly installed in the box body, the feeding assembly is fixedly installed on the side wall of the box body, and the interior of the feeding assembly communicates with the interior of the box body; the primary mixing assembly is fixedly installed at the top end of the feeding assembly, and the interior of the primary mixing assembly communicates with the interior of the feeding assembly. By controlling the ratio of the coarse material to the fine material and combining the diversion and repeated mixing effects of the inclined partition plate in the mixing box, the primary mixing of the raw materials is realized, the device is particularly suitable for an efficient mixing process of multi-granularity magnesia raw materials, and the structural consistency and the performance stability of magnesia products are ensured. The main shaft drives the lifting screw to realize up-and-down circulation of materials, thereby enhancing the diffusion mixing effect, shortening the mixing time and improving the mixing efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to raw material mixing equipment technical field, concretely is a magnesite raw material mixing equipment. BACKGROUND

[0002] Magnesite is the main raw material for producing magnesia refractory, and its preparation process directly affects the high-temperature strength, corrosion resistance, thermal shock stability and service life of the final refractory product. Magnesite raw material is usually composed of particles of different particle sizes, which can be generally divided into coarse particles (e.g., greater than 1 mm), fine particles (e.g., 0.088 mm to 1 mm), and powder (e.g., less than 0.088 mm). Fully and uniformly mixing these raw materials of different particle sizes is a key prerequisite for ensuring material structure uniformity and performance stability.

[0003] Currently, the common mixing process in the industry is to add all the magnesite raw materials of different particle sizes (coarse material, fine material, and powder) and binders (such as water glass, paper pulp waste liquid, etc.) into the mixing equipment at one time or in simple batches for stirring. However, this conventional mixing method, which ignores the order of addition, has significant defects and severely restricts the preparation of high-quality refractory materials:

[0004] 1. If the powder is added at the same time or too early with the coarse material, the powder will preferentially adsorb each other, forming "powder clumps" that are difficult to break up, and subsequent stirring will not be able to disperse them, resulting in uneven mixing of the raw materials.

[0005] 2. During the mixing and forming process, an unreasonable feeding sequence can exacerbate the particle size stratification, causing coarse and fine particles to separate, resulting in uneven mixing of the raw materials.

[0006] 3. In order to break up the agglomerates that have already formed, the mixing time has to be significantly extended, and the stirring intensity has to be increased. This not only increases equipment wear and power consumption, but also can cause certain binders to solidify prematurely due to frictional heating, further deteriorating the process performance, resulting in low mixing efficiency and increased energy consumption. SUMMARY

[0007] In view of the problems of uneven mixing, low mixing efficiency, and increased energy consumption in the existing magnesite raw material stirring, the utility model provides a magnesite raw material mixing equipment.

[0008] To solve the above technical problems, the utility model adopts the technical scheme of:

[0009] A magnesite raw material mixing equipment, comprising a box body, a powder tank fixedly installed on the side wall of the box body through a feeding pipe, and a valve fixedly installed at the bottom end of the box body;

[0010] Further comprising a driving assembly, a stirring assembly, a feeding assembly, and a preliminary mixing assembly.

[0011] The driving assembly is fixedly installed at the top end of the box body, the stirring assembly is installed in the box body, and the feeding assembly is fixedly installed on the side wall of the box body and communicates with the inside of the box body at the discharging end;

[0012] The preliminary mixing assembly comprises a coarse storage bin, a fine storage bin, a air lock, a mixing bin, a partition plate and a dropping pipe.

[0013] The dropping pipe is fixedly connected to the feeding end of the feeding assembly, the mixing bin is fixedly connected to the top end of the dropping pipe, a plurality of partition plates are arranged in the mixing bin, and the bottom of the coarse storage bin and the bottom of the fine storage bin are both connected to the inside of the mixing bin through the air lock.

[0014] Preferably, the feeding assembly comprises a feeding pipe, a spiral conveying belt and a feeding motor.

[0015] One end of the feeding pipe is fixedly installed on the side wall of the box body and communicates with the inside of the box body, the spiral conveying belt is arranged in the feeding pipe, and a feeding motor for driving the spiral conveying belt is fixedly arranged outside the other end of the feeding pipe.

[0016] Preferably, the partition plate is arranged in the mixing bin in an inclined state, three side edges of the partition plate are fixedly connected to the inner wall of the mixing bin, and a gap is formed between the fourth side edge of the partition plate and the inner wall of the mixing bin to form a channel for the raw materials to pass through.

[0017] Preferably, the stirring assembly comprises a gear ring, a pair of pinion gears, a planet shaft, an intermediate cover, a large gear and a rotating cylinder.

[0018] The intermediate cover is detachably installed at the top end of the box body, the rotating cylinder is rotatably installed at the center of the intermediate cover, extension rods are fixedly arranged at the two sides of the bottom of the rotating cylinder, the planet shaft is rotatably installed at the end of the extension rod, a plurality of paddle blades are arranged on the planet shaft in an equidistant distribution, the gear ring is fixedly connected to the bottom end of the intermediate cover, the pair of pinion gears are fixedly connected to the top end of the planet shaft and meshed with the gear ring, and the large gear is fixedly connected to the top end of the rotating cylinder.

[0019] Preferably, a main shaft is rotatably connected in the rotating cylinder, a lifting screw is fixedly installed on the main shaft, and a driven gear is fixedly installed at the top end of the main shaft.

[0020] Preferably, the driving assembly comprises a driving motor, a driving chamber cover, a driving shaft, a first driving gear, a second driving gear, a reversing gear and a reversing shaft.

[0021] The driving chamber cover is fixedly arranged above the intermediate cover, the driving motor is fixedly arranged outside the driving chamber cover, the driving shaft is connected to the power output end of the driving motor, the first driving gear and the second driving gear are fixedly arranged on the driving shaft, the second driving gear is meshed with the large gear, the reversing gear is rotatably connected to the driving chamber cover through the reversing shaft, one side of the reversing gear is meshed with the first driving gear, and the other side of the reversing gear is meshed with the driven gear.

[0022] Preferably, the box bottom end section is funnel-shaped, and a bottom corner seat is fixedly arranged outside the box.

[0023] The utility model has the following beneficial effects and advantages:

[0024] 1. The utility model provides a vacuum drying box for fertilizer detection, controls coarse and fine material ratio through air lock fan, combines with the flow guide and repeated mixing effect of the inclined baffle in the mixing box, realizes the premixing and controllable proportion feeding of coarse and fine raw materials, realizes the preliminary mixing of raw materials, lays good foundation for subsequent mixing, is especially suitable for efficient mixing process of multi -granularity magnesia raw material, effectively avoids the problems of early powder agglomeration, coarse and fine particle stratification etc, remarkably improves mixing uniformity, ensures the consistency and performance stability of magnesia product structure.

[0025] 2. The utility model discloses a multistage transmission and composite motion stirring structure are adopted, the main shaft drives the lifting screw and realizes material up and down circulation, the planetary shaft rotates while revolving, cooperates rectangular multi -piece paddle, strengthens the diffusion mixing effect, shortens the mixing time, improves mixing efficiency, reduces energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a magnesium sand raw material mixing equipment schematic view of the utility model;

[0027] Figure 2 It is a section view schematic view of the utility model;

[0028] Figure 3 It is a driving assembly schematic view of the utility model;

[0029] Figure 4 It is a stirring assembly dismantles the middle cover schematic view of the utility model;

[0030] Figure 5 It is a stirring assembly section view schematic view of the utility model.

[0031] In the drawing: 1, box;2, lifting screw;3, driving assembly;4, stirring assembly;5, feeding assembly;6, preliminary mixing assembly;7, powder box;8, valve;101, bottom corner seat;301, driving motor;302, driving chamber cover;303, driving shaft;304, first driving gear;305, second driving gear;306, reversing gear;307, reversing shaft;308, driven gear;309, main shaft;401, gear ring;402, pinion;403, planetary shaft;404, paddle;405, middle cover;406, gear wheel;407, rotary cylinder;501, feeding pipe;502, spiral conveying belt;503, feeding motor;601, coarse storage tank;602, fine storage tank;603, air lock fan;604, mixing box;605, baffle;606, discharging pipe. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0033] The utility model will be further described below with reference to the drawings in the description.

[0034] As shown in the figure, Figures 1-2 A magnesite raw material mixing device, comprising a box body 1, a powder tank 7 fixedly installed on the side wall of the box body 1 through a conveying pipe and a valve 8 fixedly installed at the bottom end of the box body 1,

[0035] Further comprising a driving assembly 3, a stirring assembly 4, a feeding assembly 5 and a preliminary mixing assembly 6.

[0036] The driving assembly 3 is fixedly installed at the top end of the box body 1, the stirring assembly 4 is installed in the box body 1, and the feeding assembly 5 is fixedly installed on the side wall of the box body 1 and communicates with the inside of the box body 1 at the discharge end thereof.

[0037] The driving assembly 3 is used for providing power for the stirring assembly 4, the preliminary mixing assembly 6 is used for preliminarily mixing coarse materials and fine materials, plays a premixing role for mixing various raw materials and improves the mixing efficiency, and the feeding assembly 5 is used for conveying the mixed raw materials into the box body 1 for re-mixing.

[0038] The preliminary mixing assembly 6 comprises a coarse storage tank 601, a fine storage tank 602, a wind-off fan 603, a mixing tank 604, a partition plate 605 and a discharging pipe 606.

[0039] The discharging pipe 606 is fixedly connected to the feeding end of the feeding assembly 5, the mixing tank 604 is fixedly connected to the top end of the discharging pipe 606 and is provided with a plurality of partition plates 605 inside, and the bottom portions of the coarse storage tank 601 and the fine storage tank 602 are both connected to the inside of the mixing tank 604 through the wind-off fan 603.

[0040] The coarse storage tank 601 is used for storing coarse materials, the fine storage tank 602 is used for storing fine materials, the wind-off fans 603 at the bottom portions of the coarse storage tank 601 and the fine storage tank 602 are respectively rotated according to the proportion, the rotation speed of the wind-off fan 603 is controlled to control the mixing proportion of the coarse materials and the fine materials, the raw materials are preliminarily mixed in the mixing tank 604, and then the preliminarily mixed raw materials are sent into the feeding assembly 5 through the discharging pipe 606.

[0041] The feeding assembly 5 comprises a feeding pipe 501, a spiral conveying belt 502 and a feeding motor 503.

[0042] The upper feeding pipe 501 is fixedly installed at one end of the side wall of the box 1, and its interior is communicated with the interior of the box 1. The interior of the upper feeding pipe 501 is provided with a spiral conveying belt 502. The other end of the upper feeding pipe 501 is fixedly provided with an upper feeding motor 503 for driving the spiral conveying belt 502.

[0043] The upper feeding motor 503 provides power for the spiral conveying belt 502. The premixed raw materials are conveyed into the box 1 through the spiral conveying belt 502 in the upper feeding pipe 501.

[0044] The partition plate 605 is arranged in an inclined state in the mixing box 604, and three side edges thereof are fixedly connected with the inner wall of the mixing box 604. A gap is formed between the fourth side edge and the inner wall of the mixing box 604 to form a channel for the raw materials to pass through.

[0045] The mixing ratio of the coarse material and the fine material is controlled by the damper 603. After falling into the mixing box 604, the raw materials are guided by the multiple partition plates 605 to repeatedly perform multiple premixing, thereby improving the mixing efficiency.

[0046] As shown in Figures 4-5 , the stirring assembly 4 includes a gear ring 401, a pair of pinion gears 402, planetary shafts 403, an intermediate cover 405, a large gear 406, and a rotating cylinder 407.

[0047] The intermediate cover 405 is detachably installed at the top end of the box 1. The rotating cylinder 407 is rotatably installed at the center of the intermediate cover 405. The rotating cylinder 407 is fixedly provided with extension rods at the bottom of two sides thereof. The planetary shafts 403 are rotatably installed at the end portions of the extension rods. The planetary shafts 403 are provided with multiple equidistantly distributed paddles 404 in the axial direction. The gear ring 401 is fixedly connected to the bottom end of the intermediate cover 405. The pair of pinion gears 402 are fixedly connected to the top ends of the planetary shafts 403 and are engaged with the gear ring 401. The large gear 406 is fixedly connected to the top end of the rotating cylinder 407. The intermediate cover 405 is detachably installed at the top end of the box 1, which facilitates disassembly and maintenance.

[0048] The rotating cylinder 407 is rotatably connected with a main shaft 309. The main shaft 309 is fixedly installed with a lifting screw 2. The main shaft 309 is fixedly installed with a driven gear 308 at the top end. The existence of the lifting screw 2 can improve the mixing efficiency.

[0049] As shown in Figure 3 , the driving assembly 3 includes a driving motor 301, a driving chamber cover 302, a driving shaft 303, a first driving gear 304, a second driving gear 305, a reversing gear 306, and a reversing shaft 307.

[0050] The driving chamber cover 302 is fixedly arranged above the middle cover 405, the driving motor 301 is fixedly arranged outside the driving chamber cover 302, the power output end of the driving motor 301 is connected with the driving shaft 303, the first driving gear 304 and the second driving gear 305 are fixedly arranged on the driving shaft 303, the second driving gear 305 is engaged with the large gear 406, the reversing gear 306 is rotationally connected in the driving chamber cover 302 through the reversing shaft 307, one side of the reversing gear 306 is engaged with the first driving gear 304 and the other side is engaged with the driven gear 308.

[0051] The driving motor 301 provides power to the first driving gear 304 and the second driving gear 305, wherein the first driving gear 304 transmits power to the driven gear 308 through the reversing gear 306, thereby driving the main shaft 309 to rotate; the main shaft 309 and the planetary shaft 403 driven by the first driving gear 304 and the second driving gear 305 respectively realize different rotating speeds, thereby realizing a complex stirring process and improving the stirring and mixing efficiency.

[0052] The bottom end section of the box body 1 is funnel-shaped, facilitating material unloading through the valve 8, and the bottom corner seat 101 is fixedly arranged outside the box body 1.

[0053] Working principle:

[0054] The equipment is powered on and kept in a standby state, the coarse material is stored in the coarse storage box 601, the fine material is stored in the fine storage box 602, and the raw material mixing is prepared to start;

[0055] Firstly, the driving motor 301 and the feeding motor 503 are in a driving state; the air lock fan 603 at the bottom of the coarse storage box 601 and the fine storage box 602 is rotated according to the proportional control, thereby controlling the mixing ratio of the coarse material and the fine material by controlling the rotating speed of the air lock fan 603, the coarse material and the fine material fall into the mixing box 604, under the action of the partition plate 605, the raw material is pre-mixed, and the pre-mixed raw material is conveyed to the box body 1 through the spiral conveying belt 502, and the box body 1 stirs and mixes the pre-mixed raw material again; then, the powder and the binding agent are sequentially put into the powder box 7 according to the need, and are sequentially stirred and mixed, the raw material in the box body 1 is lifted by the lifting screw 2 to form reciprocating mixing, and then is stirred by the paddle 404 in revolution and rotation around the main shaft 309, so as to complete the raw material mixing. Finally, the unloading is carried out through the valve 8.

[0056] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A magnesia raw material mixing device, comprising a box (1), a powder box (7) fixedly mounted on the side wall of the box (1) via a feed pipe, and a valve (8) fixedly mounted on the bottom end of the box (1); It is characterized by : Also includes a driving component (3), a stirring component (4), a feeding component (5), and a primary mixing component (6); The driving assembly (3) is fixedly mounted on the top of the box (1), the stirring assembly (4) is mounted inside the box (1), and the feeding assembly (5) is fixedly mounted on the side wall of the box (1), and its discharge end is connected to the interior of the box (1); The primary mixing assembly (6) includes a coarse material storage box (601), a fine material storage box (602), a fan (603), a mixing box (604), a partition (605), and a drop pipe (606); The drop pipe (606) is fixedly connected to the feed end of the feeding assembly (5), the mixing box (604) is fixedly connected to the top of the drop pipe (606), and a plurality of partitions (605) are provided inside the mixing box. The bottoms of the coarse material storage box (601) and the fine material storage box (601) are both connected to the inside of the mixing box (604) through the fan (603).

2. The magnesia raw material mixing equipment according to claim 1, wherein : The feeding assembly (5) includes a feeding pipe (501), a spiral conveyor belt (502), and a feeding motor (503); One end of the feeding tube (501) is fixedly mounted on the side wall of the box body (1), and the interior thereof is communicated with the interior of the box body (1). A spiral conveyor belt (502) is provided inside the feeding tube (501), and a feeding motor (503) for driving the spiral conveyor belt (502) is fixedly provided on the outside of the other end of the feeding tube (501).

3. The magnesia raw material mixing equipment according to claim 1, wherein The partition (605) is arranged in an inclined state in the mixing box (604), and its three sides are fixedly connected to the inner wall of the mixing box (604), and there is a gap between its fourth side and the inner wall of the mixing box (604) to form a channel for the raw materials to pass through.

4. The magnesia raw material mixing equipment according to claim 1, wherein : The stirring assembly (4) includes a gear ring (401), a pair of pinion gears (402), a planetary shaft (403), an intermediate cover (405), a large gear (406), and a rotating cylinder (407); The intermediate cover (405) is detachably mounted on the top of the housing (1), the rotating cylinder (407) is rotatably mounted at the center of the intermediate cover (405), extension rods are fixedly arranged on both sides of the bottom of the rotating cylinder (407), the planetary shaft (403) is rotatably mounted on the ends of the extension rods, and the axial direction of the planetary shaft (403) is provided with a plurality of equally spaced blades (404), the gear ring (401) is fixedly connected to the bottom end of the intermediate cover (405), a pair of sub-gears (402) are respectively fixedly connected to the top of the planetary shaft (403) and meshed with the gear ring (401), and the large gear (406) is fixedly connected to the top of the rotating cylinder (407).

5. The magnesia raw material mixing equipment according to claim 4, characterized in that The rotating cylinder (407) is internally connected to a main shaft (309), a lifting screw (2) is fixedly mounted on the main shaft (309), and a driven gear (308) is fixedly mounted on the top of the main shaft (309).

6. The magnesia raw material mixing equipment according to claim 5, characterized in that The driving assembly (3) includes a driving motor (301), a driving chamber cover (302), a driving shaft (303), a first driving gear (304), a second driving gear (305), a reversing gear (306), and a reversing shaft (307); A driving chamber cover (302) is fixedly arranged above the middle cover (405), a driving motor (301) is fixedly arranged on the outside of the driving chamber cover (302), a driving shaft (303) is connected to the power output end of the driving motor (301), a first driving gear (304) and a second driving gear (305) are fixedly arranged on the driving shaft (303), the second driving gear (305) is meshed with the large gear (406), a reversing gear (306) is rotatably connected to the driving chamber cover (302) via a reversing shaft (307), one side of the reversing gear (306) is meshed with the first driving gear (304) and the other side is meshed with the driven gear (308).

7. The magnesia raw material mixing equipment according to claim 1, characterized in that The cross section of the bottom end of the box body (1) is funnel-shaped, and a bottom angle seat (101) is fixedly provided on the outside thereof.

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