Refractory brick raw material stirring equipment

Abstract

The utility model provides refractory brick raw material stirring equipment, and belongs to the technical field of refractory material stirring. The refractory brick raw material stirring equipment comprises a stirring tank, a stirring shaft and a motor, the bottom of the stirring tank is in a conical funnel shape and is fixedly connected with a discharging pipeline, and a valve is arranged on the discharging pipeline; a feeding hole is formed in the lateral upper part of the stirring tank, and the lower part of the stirring tank is fixedly supported by three supporting legs; the spiral stirring blade extends into the discharging pipeline along the stirring shaft; the spiral stirring blades and the inner wall of the discharging pipeline are arranged at intervals; a spraying device is arranged on the stirring shaft; and a scraping device is arranged on the spiral stirring blade. According to the utility model, the problem of non-uniform stirring of upper and lower layers is solved through the spiral blade stirring device, the stirring and mixing uniformity is further improved through a method of first dry mixing and then wet mixing, the segregation risk is greatly reduced, residual materials in the tank body can be cleaned through the cooperation of the equipment and the device, the influence on the quality of the next batch of production materials is avoided, and the production efficiency is improved. The production process is energy-saving and efficient.

Description

Technical Field

[0001] This utility model belongs to the field of refractory material mixing technology, specifically relating to a mixing device for refractory brick raw materials. Background Technology

[0002] Refractory raw materials are used in high-temperature environments, such as in the metallurgical and ceramic industries. Stirring, as a mixing process, greatly affects the performance of the final product. The uniformity of the refractory material directly relates to the performance of the finished product; uneven stirring may lead to cracks or uneven strength during sintering. Excessive stirring time may cause over-grinding of the material, while insufficient time results in uneven mixing. Chinese patent application CN202222296112.9 discloses a raw material stirring device for refractory brick production. This device, due to its top-heavy shape and the significant density differences between different materials, easily causes uneven mixing by layering. Furthermore, the rake-shaped stirring blades can easily cause material segregation during the stirring process. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a refractory brick raw material mixing device to address the shortcomings of the existing technology in terms of uneven mixing between upper and lower layers.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A refractory brick raw material mixing device includes a mixing tank, a mixing shaft, and a motor. The bottom of the mixing tank is designed as a conical funnel, and a discharge pipe is fixedly connected to the bottom of the mixing tank. A valve is installed on the discharge pipe. A feed inlet is opened on the upper side of the mixing tank, and is fixedly supported by three legs below it. The mixing shaft passes through the top of the mixing tank along the direction of gravity and is rotatably connected to the mixing tank through a bearing. The vertical positions of the bearing and the mixing shaft are relatively fixed. The inner ring of the bearing is fixedly connected to the mixing shaft, and the outer ring of the bearing is fixedly connected to the mixing tank. A bevel gear is sleeved and fixedly fixed on the upper part of the mixing shaft, and the bevel gear is drivenly connected to the motor gear fixed above the mixing tank. A spiral mixing blade is integrally fixedly connected to the mixing shaft inside the mixing tank. The spiral mixing blade extends along the mixing shaft into the discharge pipe. A gap is set between the spiral mixing blade and the inner wall of the discharge pipe. A spray device is installed on the mixing shaft. A scraper device is fixedly installed on the spiral mixing blade.

[0006] Furthermore, the spraying device includes a spray pipe, a spray head, and a water inlet pipe; the stirring shaft has a hollow structure, and the water inlet pipe is fixed inside its upper end by a sealed bearing; the spray pipe passes vertically through the stirring shaft and is fixedly installed above the spiral stirring blades; the spray head is fixedly connected to the side of the spray pipe facing the spiral blades.

[0007] Furthermore, the feed inlet on the upper side of the mixing tank is fixedly connected to the feed funnel via a three-way pipe. The discharge end of the three-way pipe is fixedly connected to the feed inlet, the discharge end is fixedly connected to the feed funnel, and the other port is the air inlet.

[0008] Furthermore, the scraping device includes a connecting rod, a scraper, and a rivet; one end of the connecting rod is fixedly connected to the side of the spiral stirring blade, and the other end of the connecting rod is riveted to the scraper by the rivet.

[0009] Preferably, the other end of the connecting rod has a trapezoidal groove that is smaller at the top and larger at the bottom along its length; the scraper has two slotted mating holes; the scraper is fitted in the trapezoidal groove and riveted to the other end of the connecting rod by rivets passing through the slotted mating holes.

[0010] Furthermore, let the straight line where the center of the top of the two groove-shaped mating holes is located be the baseline, and the surface area of ​​the scraper located below the baseline is greater than the surface area of ​​the upper part.

[0011] Furthermore, a pressure balancing filter tank that communicates with the interior of the mixing tank is fixedly connected to the top of the mixing tank.

[0012] Furthermore, the mixing tank is designed with anti-static grounding between its interior and exterior.

[0013] Preferably, the bearing is a double-row tapered roller bearing.

[0014] Compared with the prior art, this utility model solves the problem of uneven mixing between upper and lower layers by using a spiral blade stirring device, and further improves the uniformity of mixing by using a method of dry mixing followed by wet mixing, which greatly reduces the risk of segregation. In addition, the device can be used to clean residual materials inside the tank, which can affect the quality of the next batch of production materials. The production process is energy-saving and efficient. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings.

[0016] Figure 1 : Schematic diagram of the overall structure of this utility model;

[0017] Figure 2 : Schematic diagram of the overall internal structure of the tank body of this utility model;

[0018] Figure 3 : A schematic diagram of the cross-sectional structure of this utility model;

[0019] Figure 4 Side view of the scraping device of this utility model;

[0020] Figure 5 : Schematic diagram of the overall structure of the scraping device of this utility model;

[0021] Among them, 1-mixing tank, 11-discharge pipe, 12-valve, 13-feed inlet, 14-support leg, 15-bearing, 16-pressure balance filter tank, 2-mixing shaft, 21-bevel gear, 3-motor, 4-spiral mixing blade, 5-spraying device, 51-spraying pipe, 52-spraying head, 53-water inlet pipe, 54-sealed bearing, 6-scraping device, 61-connecting rod, 62-scraper, 63-rivet, 64-trapezoidal groove, 65-groove-shaped mating hole, 71-tee pipe, 72-feeding funnel, 73-discharge end, 74-discharge end, 75-air inlet end. Detailed Implementation

[0022] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0023] A refractory brick raw material mixing device includes a mixing tank 1, a mixing shaft 2, and a motor 3. The bottom of the mixing tank 1 is designed as a conical funnel, and a discharge pipe 11 is fixedly connected to the bottom of the mixing tank 1. A valve 12 is installed on the discharge pipe 11. A feed inlet 13 is opened on the upper side of the mixing tank 1, and is fixedly supported by three support legs 14 below. The mixing shaft 2 passes through the top of the mixing tank 1 along the direction of gravity and is rotatably connected to the mixing tank 1 through a bearing 15. The vertical position of the bearing 15 and the mixing shaft 2 is relatively fixed. The inner ring of the bearing 15 is fixedly connected to the mixing shaft 2. The outer ring of the bearing 15 is fixedly connected to the mixing tank 1; a bevel gear 21 is sleeved and fixed on the upper part of the mixing shaft 2 of the mixing tank 1, and the bevel gear 21 is gear-driven connected to the motor 3 fixed on the upper part of the mixing tank 1; a spiral mixing blade 4 is integrally fixedly connected to the mixing shaft 2 inside the mixing tank 1; the spiral mixing blade 4 extends along the mixing shaft 2 into the discharge pipe 11; the spiral mixing blade 4 is spaced apart from the inner wall of the discharge pipe 11; a spraying device 5 is provided on the mixing shaft 2; and a scraping device 6 is provided on the spiral mixing blade 4.

[0024] The spiral stirring blades 4 are used to convey and tumble the material from top to bottom, which solves the problem of uneven mixing. The spiral stirring blades 4 extend into the inlet and outlet channels 11, and the discharge rhythm of the outlet channel 11 can be adjusted by controlling the direction and speed of the spiral stirring blades 4.

[0025] Furthermore, the spraying device 5 includes a spray pipe 51, a spray head 52, and a water inlet pipe 53; the stirring shaft 2 has a hollow structure, and the water inlet pipe 53 is fixedly fitted inside its upper end through a sealed bearing 54; the spray pipe 51 passes vertically through the stirring shaft 2 and is fixedly positioned above the spiral stirring blades 4; the spray head 52 is fixedly connected to the side of the spray pipe 51 facing the spiral stirring blades 4. This method allows for simultaneous dust suppression within the mixing tank 1 and the addition of a binder (water) during wet mixing of raw materials. After mixing, the tank can be cleaned, reducing the impact of mixing residues on the quality of the next batch of production.

[0026] Furthermore, the feed inlet 13 on the upper side of the mixing tank 1 is fixedly connected to the feed funnel 72 via a three-way pipe 71, the discharge end 73 of the three-way pipe is fixedly connected to the feed inlet 13, the discharge end 74 is fixedly connected to the feed funnel 72, and the other port is the air inlet 75.

[0027] By using this method, the gas source is connected through the air inlet 75, and the raw materials in the feed funnel 72 are blown into the mixing tank 1, which can perform preliminary dry mixing of the raw materials and achieve uniform mixing.

[0028] Furthermore, the scraping device 6 includes a connecting rod 61, a scraper 62, and a rivet 63; one end of the connecting rod 61 is fixedly connected to the side of the spiral stirring blade 4, and the other end of the connecting rod 61 is riveted to the scraper 62 by the rivet 63.

[0029] The scraper 62 can scrape and disturb the raw materials attached to the inner wall of the mixing tank 1, increasing the uniformity of mixing. After mixing, it can also be used in conjunction with the spray device to clean the inside of the tank, disturb the material attached to the tank wall, and reduce the impact on the quality of the next batch of production materials.

[0030] Preferably, the other end of the connecting rod 61 has a trapezoidal groove 64 with a smaller top and a larger bottom along its length; the scraper 62 has two slotted mating holes 65; the scraper 62 is fitted in the trapezoidal groove 64 and riveted to the other end of the connecting rod 61 by a rivet 63 passing through the slotted mating holes 65.

[0031] Furthermore, let the straight line where the center of the top of the two groove-shaped mating holes 65 is located be the baseline, and the surface area of ​​the scraper 62 located below the baseline is greater than the surface area of ​​the upper part.

[0032] By using the above method, the scraper 62 can be adjusted at any time according to the rotation direction of the spiral stirring blade 4 and the difference in the force-bearing area of ​​the upper and lower parts of the scraper 62, so that it always faces the downward direction.

[0033] Furthermore, a pressure balancing filter tank 16, which communicates with the interior of the mixing tank 1, is fixedly connected to the top of the mixing tank 1.

[0034] Furthermore, the mixing tank 1 is designed with anti-static grounding for both the interior and exterior. Because the raw materials are filled with gas and then remixed inside the tank, a large amount of dust can easily be generated. Therefore, both the mixing tank 1 and the support legs 14 are made of metal and grounded to prevent the risk of safety accidents caused by static electricity.

[0035] Preferably, the bearing 15 is a double-row tapered roller bearing. Since a single bearing 15 needs to bear both axial (gravity direction) and radial (stirring resistance) loads simultaneously, a double-row tapered roller bearing is preferred.

[0036] In use, valve 12 is closed, raw materials are placed in the feed funnel, water inlet pipe 53 is connected to the water source binder, air inlet 75 is connected to the gas source, and motor 3 is started to transmit power. The refractory raw materials are blown into the pipe body by the gas input from air inlet 75 and mixed again. At this time, spray pipe 51 is connected to water inlet pipe 53 through hollow stirring shaft 2. Spray head 52 rotates under the self-rotation of stirring shaft 2, and water mist is evenly sprayed into the tank to suppress dust and inject binder (water). Spiral stirring blades 4 convey the stirred material at the bottom to the top and continuously turn it up. The lower area of ​​scraper 62 is larger than the upper area. When it is rotating in the direction of spiral stirring blades 4, it always scrapes the material attached to the tank wall in a diagonally downward direction.

[0037] After mixing is complete, open valve 12 and control the spiral mixing blades 4 to rotate in the opposite direction to dynamically adjust the discharge rate as needed. When cleaning the mixing tank 1 after the material in the tank is discharged, the spray device 5 can be restarted in conjunction with the scraper device 6 to clean the inside of the tank.

[0038] Compared with the prior art, this utility model solves the problem of uneven mixing between upper and lower layers by using a spiral blade stirring device, and further improves the uniformity of mixing by using a method of dry mixing followed by wet mixing, which greatly reduces the risk of segregation. In addition, the device can be used to clean residual materials inside the tank, which can affect the quality of the next batch of production materials. The production process is energy-saving and efficient.

[0039] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A refractory brick raw material mixing device, characterized in that: The system includes a mixing tank, a mixing shaft, and a motor. The mixing tank has a conical funnel-shaped bottom and a discharge pipe fixedly connected to its bottom, with a valve installed on the discharge pipe. A feed inlet is located on the upper side of the mixing tank, supported by three legs. The mixing shaft passes through the top of the mixing tank along the direction of gravity and is rotatably connected to the tank via bearings, with the bearings and shaft vertically fixed. The inner ring of the bearing is fixedly connected to the mixing shaft, and the outer ring is fixedly connected to the mixing tank. A bevel gear is fitted and fixedly attached to the upper portion of the mixing shaft, and the bevel gear is connected to a gear of the motor fixed above the mixing tank. A spiral mixing blade is integrally fixedly connected to the mixing shaft inside the mixing tank. The spiral mixing blade extends along the mixing shaft into the discharge pipe, with a gap between the spiral mixing blade and the inner wall of the discharge pipe. A spray device is installed on the mixing shaft, and a scraper is fixedly installed on the spiral mixing blade.

2. The refractory brick raw material mixing equipment according to claim 1, characterized in that: The spraying device includes a spray pipe, a spray head, and a water inlet pipe; the stirring shaft has a hollow structure, and the water inlet pipe is fixed inside its upper end by a sealed bearing; the spray pipe passes vertically through the stirring shaft and is fixedly installed above the spiral stirring blades; the spray head is fixedly connected to the side of the spray pipe facing the spiral blades.

3. The refractory brick raw material mixing equipment according to claim 2, characterized in that: The feed inlet on the upper side of the mixing tank is fixedly connected to the feed funnel via a three-way pipe. The discharge end of the three-way pipe is fixedly connected to the feed inlet, the discharge end is fixedly connected to the feed funnel, and the other end is the air inlet.

4. A refractory brick raw material mixing device according to claim 1 or 3, characterized in that: The scraping device includes a connecting rod, a scraper, and rivets; one end of the connecting rod is fixedly connected to the side of the spiral stirring blade, and the other end of the connecting rod is riveted to the scraper by the rivets.

5. The refractory brick raw material mixing equipment according to claim 4, characterized in that: The other end of the connecting rod has a trapezoidal groove that is smaller at the top and larger at the bottom along its length; the scraper has two slotted mating holes; the scraper is fitted in the trapezoidal groove and riveted to the other end of the connecting rod by passing rivets through the slotted mating holes.

6. The refractory brick raw material mixing equipment according to claim 5, characterized in that: Let the straight line containing the center of the top of the two groove-shaped mating holes be the baseline, and the surface area of ​​the scraper below the baseline is greater than the surface area above it.

7. The refractory brick raw material mixing equipment according to claim 6, characterized in that: A pressure balancing filter tank that communicates with the interior of the mixing tank is fixedly connected to the top of the mixing tank.

8. The refractory brick raw material mixing equipment according to claim 1, characterized in that: The mixing tank is designed with anti-static grounding for both the interior and exterior.

9. The refractory brick raw material mixing equipment according to claim 1, characterized in that: The bearing is a double-row tapered roller bearing.

Images