Pretreatment mixing equipment for steel slag road

Abstract

The utility model relates to the technical field of steel slag roads, in particular to pretreatment mixing equipment for a steel slag road, which comprises a base and further comprises an overturning pot, a lifting mechanism, a stirring component, a pot cover and a spraying component, the overturning pot is arranged on the base and used for storing and heating steel slag; the stirring end of the stirring assembly vertically penetrates through the pot cover; the pot cover is used for sealing the opening of the overturning pot during stirring; the stirring end of the stirring assembly is used for stirring steel slag in the pot and introducing steam into the pot; the spraying assembly is fixed to the inner side of the pot cover and used for spraying activation liquid and water into the overturning pot. According to the utility model, the stirrer is used for stirring steel slag, activating liquid is sprayed into the steel slag to activate the steel slag while stirring, then water is sprayed for aging, gas is introduced, and aging and reaction are accelerated through heating. The problem that the existing pretreatment equipment for the steel slag road cannot meet the production requirements of activating the activity of the steel slag and accelerating aging is solved.

Description

A pretreatment mixing equipment for steel slag roads Technical Field

[0001] This utility model relates to the field of steel slag road application technology, and in particular to a steel slag road pretreatment mixing equipment. Background Technology

[0002] During the application of steel slag in road construction, most of the steel slag produced in factories contains 5% to 20% free calcium oxide. Free calcium oxide reacts with water, causing the steel slag to expand to varying degrees. This expansion can lead to road surface cracking, affecting the road's strength and durability, which has become a major obstacle to the use of steel slag in road engineering.

[0003] Currently, various pretreatment methods for treating free calcium oxide in steel slag have been proposed and applied in engineering practice. For example, the utility model disclosed in CN213357627U provides a hot slag treatment tank for steel slag. This device promotes the vertical flow of steel slag through a stirring mechanism, thereby allowing the steel slag to have more complete contact with steam and resulting in better self-decomposition of the steel slag.

[0004] As described above, most existing pretreatment equipment for steel slag road use only involves introducing steam or adding acid to activate the steel slag, which cannot meet the production requirements of activating the steel slag while accelerating its aging. Summary of the Invention

[0005] In view of this, this utility model proposes a pretreatment mixing device for steel slag used on roads. This device uses a mixer to stir the steel slag, and simultaneously sprays an activating liquid into the slag to activate it. Water is then sprayed in for aging, and gas is introduced, with heating used to accelerate the aging and reaction. This solves the problem that existing pretreatment equipment for steel slag used on roads cannot meet the production requirements of simultaneously activating the steel slag and accelerating its aging.

[0006] The technical solution of this utility model is implemented as follows:

[0007] This utility model provides a pretreatment mixing device for steel slag roads, including a base, a tilting pot, a lifting mechanism, a stirring assembly, a pot lid, and a spraying assembly.

[0008] The tilting pot is mounted on the base and is used to store and heat steel slag;

[0009] The lifting mechanism is mounted on the base, and the stirring assembly and the pot lid are fixed on its lifting end. The stirring end of the stirring assembly passes through the pot lid from top to bottom, and the pot lid is used to close the opening of the tilting pot during stirring.

[0010] The stirring end of the stirring assembly is used to stir the steel slag in the pot and to introduce steam into the pot.

[0011] The spraying assembly is fixed to the inside of the pot lid and is used to spray activation liquid and water into the tilting pot.

[0012] Based on the above technical solutions, preferably, the lifting mechanism includes a telescopic rod and a lifting seat, wherein,

[0013] The telescopic rod is fixed to the top rear side of the base;

[0014] The rear end of the lifting seat is fixedly connected to the output end of the telescopic rod, and the front end is located above the tilting pot;

[0015] The front end of the lifting seat is designated as the lifting end of the lifting mechanism.

[0016] Based on the above technical solutions, preferably, the stirring assembly includes a motor, a stirrer, and a steam input pipe, wherein,

[0017] The motor is fixed on the lifting end of the lifting mechanism, and its output shaft extends vertically out of the motor housing to form a rotating shaft for driving the stirrer to rotate.

[0018] The lower end of the rotating shaft passes through the lifting end of the lifting mechanism and the pot lid in sequence.

[0019] The rotating shaft is a hollow shaft, with its lower end elastically connected to the stirrer, and the steam input pipe is provided on its hollow inner side;

[0020] The rotating shaft, agitator, and steam input pipe constitute the stirring end of the stirring assembly.

[0021] Based on the above technical solutions, preferably, the stirring assembly further includes a spring, wherein,

[0022] The springs are arranged in a circumferential ring array around the rotation axis.

[0023] A flange is provided circumferentially at the lower end of the rotating shaft;

[0024] The spring is vertically arranged, with its upper end fixedly connected to the flange and its lower end fixedly connected to the stirrer.

[0025] Based on the above technical solutions, preferably, the steam input pipe extends downwards through the hollow part of the rotating shaft.

[0026] Based on the above technical solutions, preferably, the spray assembly includes a dispensing tank, a storage tank, a delivery pipe, and a pump, wherein,

[0027] The separatory tank is arranged in a ring shape around the rotating shaft, with the lid fixedly connected to its top and several drainage holes evenly distributed at its bottom.

[0028] Two liquid storage tanks are fixed on the lifting end of the lifting mechanism, one of which is a water storage tank and the other is an activation liquid storage tank.

[0029] The two storage tanks are each connected to the distribution tank via a delivery pipe, and each delivery pipe is equipped with a liquid pump.

[0030] Based on the above technical solutions, preferably, the stirrer includes a frame, blades, and a top plate, wherein,

[0031] The blade is fixedly connected to the side of the frame, and the top plate is fixedly connected to the top.

[0032] The spring is fixedly connected to the top of the top plate.

[0033] Based on the above technical solutions, preferably, the pot lid is tightly fitted onto the opening of the tilting pot by the lifting mechanism.

[0034] Based on the above technical solutions, preferably, the tilting pot is an electrically heated reaction pot.

[0035] Based on the above technical solutions, preferably, a tilting shaft is fixedly provided on the side of the tilting pot along the transverse direction, wherein,

[0036] The flipping shaft is rotatably mounted on the base;

[0037] A handwheel is fixed to one end of one of the rotating shafts.

[0038] The pretreatment mixing equipment for steel slag roads of this utility model has the following advantages over the prior art:

[0039] (1) By integrating a tilting pot, lifting mechanism, stirring assembly, pot lid, and spraying assembly, the system achieves effective storage, heating, and treatment of steel slag. During the stirring process, activating liquid and water are sequentially sprayed into the pot, and gas is introduced to accelerate the aging and reaction processes through heating. This structure not only effectively activates the steel slag but also accelerates the aging process, meeting the production requirements of simultaneously activating the steel slag and accelerating its aging.

[0040] (2) The lifting mechanism can provide convenient conditions for opening and closing the pot lid, and the pot lid is tightly attached to the pot opening of the tilting pot during stirring to prevent the loss of heat and gas, which helps to maintain stable temperature and pressure conditions, thereby accelerating the aging speed of steel slag and improving processing efficiency.

[0041] (3) By using a spring for elastic connection between the agitator and the rotating shaft, the agitator is allowed to have a certain buffer space during the mixing process. This not only reduces the damage to the equipment caused by mechanical stress and extends the service life of the equipment, but also ensures the stability and uniformity of the mixing process, further improving the effect of steel slag treatment.

[0042] (4) The output shaft of the motor extends vertically out of the housing to form a rotating shaft. This rotating shaft is hollow, which facilitates the installation and arrangement of the steam input pipe. At the same time, the lower end of the steam input pipe is led out from the lower end of the rotating shaft, so that the steam can directly reach the interior of the steel slag, which increases the contact area between the steam and the steel slag, improves the steam utilization rate, effectively promotes the hydration reaction of the steel slag, and significantly accelerates the aging process of the steel slag. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 is a side view of a steel slag road pretreatment mixing equipment according to the present invention;

[0045] Figure 2 is a schematic diagram of the structure at the motor;

[0046] Figure 3 is a schematic diagram of the structure of the stirrer;

[0047] Figure 4 is a schematic diagram of the structure of the separatory tank;

[0048] In the diagram: 1. Base; 2. Tilting pot; 3. Lifting mechanism; 4. Stirring assembly; 5. Pot lid; 6. Spraying assembly; 21. Tilting shaft; 22. Handwheel; 31. Telescopic rod; 32. Lifting seat; 41. Motor; 42. Stirrer; 43. Steam input pipe; 44. Spring; 61. Separating tank; 62. Storage tank; 63. Infusion pipe; 64. Liquid pump; 411. Rotating shaft; 421. Frame; 422. Blade; 423. Top plate; 611. Drain hole; 4111. Flange. Detailed Implementation

[0049] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0050] As shown in Figures 1-4, the present invention provides a pretreatment mixing equipment for steel slag roads, comprising a base 1, a tilting pot 2, a lifting mechanism 3, a mixing assembly 4, a pot cover 5, and a spraying assembly 6.

[0051] The rotating pot 2 is mounted on the base 1 and is used to store and heat steel slag. The lifting mechanism 3 is mounted on the base 1, and a stirring component 4 and a pot lid 5 are fixed on its lifting end. The stirring end of the stirring component 4 passes through the pot lid 5 from top to bottom. The pot lid 5 is used to close the pot opening of the rotating pot 2 during stirring. The stirring end of the stirring component 4 is used to stir the steel slag in the pot and to introduce steam into the pot. The spraying component 6 is fixed on the inside of the pot lid 5 and is used to spray activation liquid and water into the rotating pot 2.

[0052] The above structure enables the effective storage, heating, and treatment of steel slag. During the stirring process, an activating liquid (acid, alkali, or salt, or other chemical liquids) and water are sequentially sprayed into the pot, and gas is introduced. Heating accelerates the aging and reaction processes. This structure not only effectively activates the steel slag but also speeds up the aging process, meeting the production requirements of simultaneously activating steel slag and accelerating aging.

[0053] Furthermore, the above structure enables the mixing equipment to have functions such as activation, heat treatment, autoclaving, aging, heating, and stirring. This allows for the combined treatment of free calcium oxide in steel slag, increasing the stability of the steel slag and better meeting road performance requirements.

[0054] As shown in Figure 1, the lifting mechanism 3 includes a telescopic rod 31 and a lifting seat 32. The telescopic rod 31 is fixed to the top rear side of the base 1. The rear end of the lifting seat 32 is fixedly connected to the output end of the telescopic rod 31, and the front end is located above the tilting pot 2. The front end of the lifting seat 32 is the lifting end of the lifting mechanism 3.

[0055] In this structure, the telescopic rod 31 is an electric telescopic rod, but it can also be a pneumatic cylinder or a hydraulic cylinder. The extension and retraction of the telescopic rod 31 drives the lifting seat 32 to rise and fall, thereby achieving the raising and lowering of the stirring assembly 4, the pot lid 5, and the spray assembly 6. During stirring, the stirring end of the stirring assembly 4 is inserted into the slag via the lifting mechanism 3; after stirring, the slag is removed. Similarly, the pot lid 5 is tightly fitted to the opening of the tilting pot 2 or removed via the lifting mechanism 3, thus enabling the tilting pot 2 to open and close.

[0056] When the lid 5 and the tilting pot 2 are closed, heat and gas inside the pot can be effectively prevented from escaping. This helps maintain stable temperature and pressure conditions, thereby accelerating the aging of steel slag and improving processing efficiency. Furthermore, rubber pads are installed on the bottom surface of the lid 5 or the top surface of the tilting pot 2 to improve airtightness and also to cushion the force when the lid 5 is lowered.

[0057] As shown in Figure 2, the stirring assembly 4 includes a motor 41, a stirrer 42, and a steam input pipe 43. The motor 41 is fixed on the lifting end of the lifting mechanism 3, and its output shaft extends vertically out of the motor housing to form a rotating shaft 411 for driving the stirrer 42 to rotate. The lower end of the rotating shaft 411 passes through the lifting end of the lifting mechanism 3 and the pot lid 5 in sequence. The rotating shaft 411 is a hollow shaft, and its lower end is elastically connected to the stirrer 42. A steam input pipe 43 is provided on its hollow inner side. The rotating shaft 411, the stirrer 42, and the steam input pipe 43 constitute the stirring end of the stirring assembly 4.

[0058] In this structure, the hollow rotating shaft 411 extends out of its own housing at both ends, making the ends of the rotating shaft 411 externally positioned to facilitate the installation and arrangement of the steam input pipe 43. Simultaneously, the steam input pipe 43 extends downwards through the hollow of the rotating shaft 411, allowing steam to be drawn out from the lower end of the steam input pipe 43, enabling steam to directly reach the interior of the steel slag. This increases the contact area between the steam and the steel slag, improves steam utilization, effectively promotes the hydration reaction of the steel slag, and significantly accelerates the aging process of the steel slag.

[0059] In addition, the upper end of the steam input pipe 43 is connected to a steam generator, or it can be connected to a device that can generate steam from gas. A valve is installed on the pipe to control the steam delivery time, and a pressure gauge is installed on the pipe to facilitate observation of the real-time pressure of the steam in the pipe.

[0060] In addition, an air slip ring is provided between the steam input pipe 43 and the rotating shaft 411. When the rotating shaft 411 rotates, the air slip ring can keep the steam input pipe 43 relatively stationary and prevent the steam input pipe 43 from interfering with the rotating shaft 411.

[0061] As shown in Figure 3, the stirring assembly 4 also includes a spring 44, wherein there are several springs 44 arranged in a circumferential annular array around the rotating shaft 411; a flange 4111 is provided in the circumferential direction at the lower end of the rotating shaft 411; the spring 44 is arranged vertically, with the flange 4111 fixedly connected to its upper end and the stirrer 42 fixedly connected to its lower end.

[0062] In this structure, the agitator 42 and the rotating shaft 411 are elastically connected by a spring 44, allowing the agitator 42 to have a certain buffer space during the mixing process. This not only reduces the damage to the equipment caused by mechanical stress and extends the service life of the equipment, but also ensures the stability and uniformity of the mixing process, further improving the effect of steel slag treatment.

[0063] As shown in Figures 2 and 4, the spray assembly 6 includes a dispensing tank 61, a storage tank 62, an infusion pipe 63, and a pump 64. The dispensing tank 61 is arranged in a ring shape around the circumference of the rotating shaft 411, with a pot lid 5 fixedly connected to its top and several drainage holes 611 evenly distributed at its bottom. Two storage tanks 62 are fixed on the lifting end of the lifting mechanism 3, one of which is a water storage tank and the other is an activation liquid storage tank. The two storage tanks 62 are connected to the dispensing tank 61 through an infusion pipe 63, and a pump 64 is installed on each infusion pipe 63.

[0064] In this structure, water or activating liquid is injected into the distribution tank 61 via a liquid pump 64, and the injected liquid is sprayed into the steel slag through the drain hole 611. This structure ensures that the liquid can be evenly distributed across the entire surface of the steel slag, improving the utilization efficiency of the activating liquid and water, thereby better activating and aging the steel slag and meeting production requirements.

[0065] In addition, an atomizing nozzle can be installed at the drain hole 611 to achieve atomized spraying through the pumping pressure of the liquid pump 64, thereby improving the contact effect between the liquid and the steel slag and thus making the steel slag treatment effect better.

[0066] In addition, a replenishment port is provided on the liquid storage tank 62 for replenishing the corresponding liquid into the tank. Furthermore, a level gauge is installed in the liquid storage tank 62 to provide real-time liquid level feedback, facilitating timely liquid replenishment.

[0067] As shown in Figure 3, the stirrer 42 includes a star-shaped frame 421, elliptical blades 422, and a top plate 423. The blades 422 are fixedly connected to the sides of the frame 421, and the top plate 423 is fixedly connected to the top of the frame 421. A spring 44 is fixedly connected to the top of the top plate 423. This structure not only enhances the strength and stability of the stirrer 42 but also effectively improves the stirring efficiency.

[0068] As shown in Figure 1, a tilting shaft 21 is fixedly installed on the side of the tilting pot 2 along the horizontal direction. The tilting shaft 21 is rotatably mounted on the base 1. A handwheel 22 is fixed to one end of one of the tilting shafts 21. The handwheel 22 can be used to tilt the pot 2 vertically to pour out the slag inside the pot.

[0069] In this structure, the tilting pot 2 is any kind of electric heating reaction pot in the prior art. Its principle is that a jacket is set on the pot, and an electric heating wire is set in the jacket. After the power is turned on, the steel slag in the pot is heated by the electric heating wire.

[0070] As shown in Figure 1, the pot lid 5 is fixed to the bottom of the lifting base 32 by bolts, and the liquid distribution tank 61 is housed inside the pot lid 5. The lifting base 32 is hollow inside and is used to house the liquid storage tank 62 and the motor 41. The liquid storage tank 62 and the motor 41 are both fixed to the top of the lifting base 32 by bolts.

[0071] In the above structure, a control panel is provided on one side of the base 1. The control panel is equipped with components such as switches, display screen, and operation buttons to control the equipment in real time and monitor the working process of the equipment.

[0072] The method of using the pretreatment mixing equipment for steel slag roads according to this utility model is as follows:

[0073] First, the steel slag is poured into the tilting pot 2. The lifting mechanism 3 drives the stirrer 42 to descend into the pot until the pot lid 5 is tightly attached to the pot opening of the tilting pot 2. The steel slag is heated by the tilting pot 2, and then the motor 41 drives its rotating shaft 411 to rotate. The rotating shaft 411 drives the stirrer 42 to stir the steel slag.

[0074] Activating liquid is drawn from storage tank 62 by liquid pump 64 and sprayed into steel slag through drain hole 611 for activation treatment. Water is drawn from storage tank 62 by another liquid pump 64 and sprayed into steel slag for aging treatment. Steam is then introduced into the pot through steam input pipe 43 to create a high-pressure, hot, and simmering mixing pot environment, ensuring that the steel slag material undergoes pretreatment without any blind spots. After pretreatment, pot lid 5 is opened by lifting mechanism 3, and tilting pot 2 is performed by handwheel 22 for material discharge.

[0075] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pretreatment mixing device for steel slag roads, comprising a base (1), characterized in that: It also includes a tilting pot (2), a lifting mechanism (3), a stirring assembly (4), a pot lid (5), and a spraying assembly (6). The tilting pot (2) is mounted on the base (1) and is used to store and heat steel slag. The lifting mechanism (3) is mounted on the base (1), and the stirring assembly (4) and the pot lid (5) are fixed to its lifting end. The stirring end of the stirring assembly (4) extends vertically through the pot lid (5), and the pot lid (5) is used to close the opening of the tilting pot (2) during stirring. The stirring end of the stirring assembly (4) is used for… The stirring assembly (6) is used to stir the slag in the pot and to introduce steam into the pot; the spray assembly (6) is fixed to the inside of the pot cover (5) and is used to spray activation liquid and water into the tilting pot (2); the stirring assembly (4) includes a motor (41), a stirrer (42) and a steam input pipe (43), wherein the motor (41) is fixed to the lifting end of the lifting mechanism (3), and its output shaft extends vertically out of the housing of the motor (41) to form a rotating shaft (411) for driving the stirrer (42) to rotate; the rotating shaft ( The lower end of the rotating shaft (411) passes through the lifting end of the lifting mechanism (3) and the pot lid (5) in sequence; the rotating shaft (411) is a hollow shaft, the lower end of which is elastically connected to the stirrer (42), and the steam input pipe (43) is provided on its hollow inner side; the rotating shaft (411), the stirrer (42) and the steam input pipe (43) constitute the stirring end of the stirring assembly (4); the spray assembly (6) includes a liquid separator (61), a liquid storage tank (62), a liquid delivery pipe (63) and a liquid pump (64), wherein the liquid separator... The box (61) is arranged in a ring shape around the circumference of the rotating shaft (411), with the pot lid (5) fixedly connected to its top and several drainage holes (611) evenly distributed at the bottom; two liquid storage tanks (62) are fixed on the lifting end of the lifting mechanism (3), one of which is a water storage tank and the other is an activation liquid storage tank; the two liquid storage tanks (62) are respectively connected to the dispensing tank (61) through a delivery pipe (63), and each delivery pipe (63) is equipped with a liquid pump (64).

2. The pretreatment mixing equipment for steel slag roads as described in claim 1, characterized in that: The lifting mechanism (3) includes a telescopic rod (31) and a lifting seat (32), wherein the telescopic rod (31) is fixed to the top rear side of the base (1); the rear end of the lifting seat (32) is fixedly connected to the output end of the telescopic rod (31), and the front end is located above the tilting pot (2); the front end of the lifting seat (32) is the lifting end of the lifting mechanism (3).

3. The pretreatment mixing equipment for steel slag roads as described in claim 1, characterized in that: The stirring assembly (4) also includes a spring (44), wherein there are several springs (44) arranged in a circumferential ring around the rotating shaft (411); a flange (4111) is provided on the lower end of the rotating shaft (411); the spring (44) is arranged vertically, with its upper end fixedly connected to the flange (4111) and its lower end fixedly connected to the stirrer (42).

4. The pretreatment mixing equipment for steel slag roads as described in claim 1, characterized in that: The steam input pipe (43) extends downward through the hollow of the rotating shaft (411).

5. The pretreatment mixing equipment for steel slag roads as described in claim 3, characterized in that: The stirrer (42) includes a frame (421), blades (422) and a top plate (423), wherein the blades (422) are fixedly connected to the side of the frame (421) and the top plate (423) is fixedly connected to the top; the spring (44) is fixedly connected to the top of the top plate (423).

6. The pretreatment mixing equipment for steel slag roads as described in claim 1, characterized in that: The lid (5) is tightly attached to the opening of the flip pot (2) by the lifting mechanism (3).

7. The pretreatment mixing equipment for steel slag roads as described in claim 1, characterized in that: The rotating pot (2) is an electrically heated reaction pot.

8. The pretreatment mixing equipment for steel slag roads as described in claim 1, characterized in that: The side of the tilting pot (2) is fixedly provided with a tilting shaft (21) in the transverse direction, wherein the tilting shaft (21) is rotatably provided on the base (1); a handwheel (22) is fixed on one end of one of the tilting shafts (21).

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