A modular lime dry digestion device for steelmaking and sintering

Abstract

The present invention relates to the technical field of steelmaking and sintering, and more specifically, to a modular lime dry digestion device for steelmaking and sintering, comprising a feed funnel, a digestion box, a controller, a water tank and a sealing plug. The feed funnel and the water tank are both arranged on the digestion box, the controller is arranged on the digestion box, a discharge port is provided on the digestion box, the sealing plug is movably arranged in the discharge port and the two are threadedly engaged. The lime dry digestion device also includes: a stirring structure, which is arranged in the digestion box and connected to the water tank, and is used to mix water and calcium oxide and stir them; an insulation module, which is arranged on the digestion box and connected to the stirring structure, and when the stirring structure is working, controls the insulation module to work and keeps the temperature in the digestion box warm. The entire process has a high degree of automation, which ensures the product quality of the lime finally produced.

Description

Technical Field

[0001] The present invention relates to the technical field of steelmaking and sintering, and more particularly to a modular lime dry smelting device for steelmaking and sintering. Background Art

[0002] Lime digestion equipment is a device that digests quicklime into lime milk. Quicklime digestion is widely used in the production processes of steel sintering plants, power plants, chemical industry, building materials and cement plants, etc. For example, the lime digestion process is used in the steel plant firing process, the quicklime digestion process is used in the desulfurization system, the preparation process of calcium treatment agent for sewage treatment, and the preparation process of industrial and commercial quality slaked lime for fine chemicals such as toothpaste and pharmaceuticals.

[0003] The existing dry lime digestion device has a simple structure, a low degree of automation, and a small degree of correlation between the various mechanical structures, resulting in poor quality of the lime finally produced. Summary of the Invention

[0004] The object of the present invention is to provide a modular lime dry slaking device for steelmaking and sintering to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A modular lime dry digestion device for steelmaking and sintering, comprising a feed hopper, a digestion box, a controller, a water tank, and a sealing plug, wherein the feed hopper and the water tank are both arranged on the digestion box, the controller is arranged on the digestion box, the digestion box is provided with a discharge port, the sealing plug is movably arranged in the discharge port and the two are threadedly engaged, and the lime dry digestion device further comprises:

[0007] A stirring structure is provided in the digestion tank and is connected to the water tank, and is used to mix water and calcium oxide and perform stirring treatment on them;

[0008] The heat preservation module is arranged on the digestion box and connected to the stirring structure. When the stirring structure is working, the heat preservation module is controlled to keep the temperature in the digestion box warm.

[0009] The stirring structure comprises:

[0010] A stirring plate, which is movable inside the digestion tank;

[0011] A stepper motor is disposed in the digestion tank and an output end thereof is connected to the stirring plate;

[0012] a water spray seat, disposed in the digestion tank and connected to the water tank; and

[0013] The valve unit is arranged in the digestion box and connected between the water spray seat and the stirring plate, and is used to control the opening and closing of the water spray seat.

[0014] A further technical solution of the present application is as follows: a plurality of guide grooves are arranged around the stirring disk, a movable blade is movably arranged in each of the guide grooves, and the movable blade is elastically connected to the stirring disk.

[0015] A further technical solution of the present application: the valve unit includes a gear, a damping disc, a blocking plate and a plurality of teeth;

[0016] The gear and the damping disk are both movably arranged in the digestion box and are coaxially connected. The damping disk and the stirring disk are slidably matched. The blocking plate is movably arranged in the digestion box and slides through the water spray seat. The blocking plate and the digestion box are elastically connected. A No. 2 through hole is formed on the blocking plate. A No. 1 through hole is provided in the water spray seat on the moving path of the No. 2 through hole. Several teeth are equidistantly arranged on the blocking plate, and the teeth are meshed with the gear.

[0017] A further technical solution of the present application: the insulation module includes:

[0018] The insulation pipes are arranged in a group and symmetrically on both sides of the digestion box;

[0019] A heating box is provided on the digestion box, wherein a heating rod is provided in the heating box, an input hole and an output hole are provided on the heating box, and a one-way valve is provided in each of the input hole and the output hole, and the input hole and the output hole are connected to both ends of the insulation pipe; and

[0020] The water driving unit is arranged in the heating box and connected to the stirring plate, and is used for controlling the input and output of water in the heating box.

[0021] A further technical solution of the present application is that the insulation pipe is S-shaped.

[0022] The present application has a further technical solution: the water displacement unit includes a piston, a movable seat and a transmission member;

[0023] The piston is movably arranged in the heating box, the movable seat is movably arranged in the heating box and is connected to the heating box through an elastic member, one end of the movable seat is connected to the piston, and the other end of the movable seat is connected to the stirring plate through a transmission member.

[0024] The present application has a further technical solution: the transmission part includes a plurality of No. 1 magnets and No. 2 magnets, the plurality of No. 1 magnets are arranged on the stirring plate, and the No. 2 magnets are arranged at the other end of the movable seat, and the No. 1 magnets and the No. 2 magnets meet and repel each other.

[0025] Compared with the prior art, the technical solution provided by the embodiments of the present invention has the following beneficial effects:

[0026] The embodiment of the present invention sets a stirring structure and an insulation module, and utilizes the linkage between the mechanical structures. While controlling the operation of the stirring structure, it can not only control the opening and closing of the water spray seat, but also control the operation of the insulation module to perform insulation treatment on the digestion environment of the limestone. The whole process has a high degree of automation, which ensures the product quality of the lime finally produced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of a modular lime dry smelting device for steelmaking and sintering according to an embodiment of the present invention;

[0028] Figure 2 Schematic diagram of the structure of the water spray seat and the blocking plate in the modular lime dry smelting device for steelmaking and sintering according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of the modular dry lime digestion device for steelmaking and sintering, which is an enlarged view of point A in the embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of the enlarged position B in the modular lime dry smelting device for steelmaking and sintering in an embodiment of the present invention.

[0031] Explanation of the numbers in the schematic diagram:

[0032] 1-feeding funnel, 2-digestion box, 3-controller, 4-water tank, 5-water spray seat, 6-sealing plate, 7-through hole No. 1, 8-through hole No. 2, 9-insulation tube, 10-stirring plate, 11-movable blade, 12-sealing plug, 13-magnet No. 1, 14-stepping motor, 15-gear, 16-damping plate, 17-teeth, 18-heating box, 19-movable seat, 20-piston, 21-magnet No. 2, 22-heating rod, 23-one-way valve, 24-spring. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. The present invention is further described below in conjunction with the embodiments.

[0034] See also Figure 1-Figure 4In one embodiment of the present application, a modular lime dry digestion device for steelmaking and sintering includes a feed hopper 1, a digestion box 2, a controller 3, a water tank 4, and a sealing plug 12. The feed hopper 1 and the water tank 4 are both arranged on the digestion box 2. The controller 3 is arranged on the digestion box 2. The digestion box 2 is provided with a discharge port. The sealing plug 12 is movably arranged in the discharge port and the two are threadedly engaged. The lime dry digestion device also includes:

[0035] A stirring structure is provided in the digestion tank 2 and is connected to the water tank 4, and is used to mix water and calcium oxide and perform stirring treatment on them;

[0036] The heat preservation module is arranged on the digestion box 2 and connected to the stirring structure. When the stirring structure is working, the heat preservation module is controlled to work and keep the temperature in the digestion box 2 warm.

[0037] The stirring structure comprises:

[0038] A stirring plate 10 is movably arranged in the digestion box 2;

[0039] A stepper motor 14 is disposed in the digestion tank 2 and has its output end connected to the stirring plate 10;

[0040] A water spray seat 5 is provided in the digestion tank 2 and is connected to the water tank 4; and

[0041] The valve unit is arranged in the digestion tank 2 and connected between the water spray seat 5 and the stirring plate 10, and is used to control the opening and closing of the water spray seat 5.

[0042] In a specific case of this embodiment, a plurality of guide grooves are arranged around the stirring disc 10 , and a movable blade 11 is movably provided in each of the guide grooves. The movable blade 11 is elastically connected to the stirring disc 10 .

[0043] In another specific case of this embodiment, the valve unit includes a gear 15, a damping disc 16, a blocking plate 6 and a plurality of teeth 17;

[0044] The gear 15 and the damping disc 16 are both movably arranged in the digestion box 2 and are coaxially connected. The damping disc 16 and the stirring disc 10 are slidably matched. The blocking plate 6 is movably arranged in the digestion box 2 and slides through the water spray seat 5. The blocking plate 6 and the digestion box 2 are elastically connected. A No. 2 through hole 8 is formed on the blocking plate 6. A No. 1 through hole 7 is provided in the water spray seat 5 on the moving path of the No. 2 through hole 8. Several teeth 17 are equidistantly arranged on the blocking plate 6, and the teeth 17 are meshed with the gear 15.

[0045] In actual application, calcium oxide is poured into the digestion box 2 along the feed funnel 1, and the controller 3 controls the stepper motor 14 to be powered on and rotated, which can drive the stirring disk 10 to rotate, thereby stirring the calcium oxide. In this process, under the action of the friction resistance between the stirring disk 10 and the damping disk 16, the damping disk 16 and the gear 15 can be driven to rotate, so that under the meshing action of the gear 15 and the rack, the sealing plate 6 is driven to move, thereby controlling the water spray seat 5 to open and input the water in the water tank 4 into the digestion box 2 to contact with the calcium oxide for digestion treatment. At the same time, when the stirring disk 10 rotates, it can drive the insulation module to work, thereby improving the lime digestion environment and ensuring the quality of the lime finally produced. By changing the rotation speed of the stepper motor 14, the centrifugal force exerted on the movable blade 11 can be changed, so that the movable blade 11 moves back and forth along the guide rail, thereby improving the stirring effect of the calcium oxide and water.

[0046] See also Figure 1 as well as Figure 4 As another preferred embodiment of the present application, the thermal insulation module includes:

[0047] The insulation pipes 9 are arranged in a group and symmetrically on both sides of the digestion box 2;

[0048] A heating box 18 is provided on the digestion box 2. A heating rod 22 is provided in the heating box 18. An input hole and an output hole are provided on the heating box 18. Both the input hole and the output hole are provided with a one-way valve 23. The input hole and the output hole are connected to both ends of the insulation pipe 9; and

[0049] The water driving unit is disposed in the heating box 18 and connected to the stirring plate 10 , and is used to control the input and output of water in the heating box 18 .

[0050] In this embodiment, for example, the thermal insulation tube 9 is S-shaped.

[0051] When the stirring disc 10 rotates, it can drive the water drive unit to work. The water drive unit can control the water flow in the insulation pipe 9 to be in a circulating state, and the controller 3 controls the heating rod 22 to heat the water, thereby ensuring the lime digestion processing environment.

[0052] See also Figure 1 as well as Figure 4 , as another preferred embodiment of the present application, the water displacement unit includes a piston 20, a movable seat 19 and a transmission member;

[0053] The piston 20 is movably arranged in the heating box 18, the movable seat 19 is movably arranged in the heating box 18 and is connected to the heating box 18 through an elastic member, one end of the movable seat 19 is connected to the piston 20, and the other end of the movable seat 19 is connected to the stirring plate 10 through a transmission member.

[0054] It should be noted that the elastic member may be a spring, a spring sheet or an elastic steel plate structure. In this embodiment, the elastic member is preferably a spring 24 , which is connected between the movable seat 19 and the heating box 18 .

[0055] In this embodiment, the transmission member includes several No. 1 magnets 13 and No. 2 magnets 21. Several No. 1 magnets 13 are distributed on the stirring plate 10, and the No. 2 magnet 21 is set at the other end of the moving seat 19. The No. 1 magnets 13 and No. 2 magnets 21 meet and repel each other.

[0056] It should be noted that this embodiment is not limited to the above-mentioned No. 1 magnet 13 and No. 2 magnet 21 to adjust the position of the movable seat 19 and the piston 20. A linear motor or electric cylinder direct drive can also be used instead, which will not be listed here one by one.

[0057] During the continuous rotation of the stirring disc 10, the No. 1 magnet 13 at different positions can be driven to successively meet the No. 2 magnet 21 and repel each other, thereby driving the movable seat 19 and the piston 20 to reciprocate in the heating box 18. During this process, the water in the insulation pipe 9 can be pumped into the heating box 18 and heated by the heating rod 22, and then discharged into the insulation pipe 9, thereby realizing the circulation of water flow and performing insulation treatment on the environment in the digestion box 2, thereby ensuring the dry digestion treatment effect of the lime.

[0058] How this application works:

[0059] Calcium oxide is poured into the digestion box 2 along the feed funnel 1, and the stepping motor 14 is powered on and rotated by the controller 3, which can drive the stirring disc 10 to rotate, thereby stirring the calcium oxide. In this process, under the action of the friction resistance between the stirring disc 10 and the damping disc 16, the damping disc 16 and the gear 15 can be driven to rotate, so that under the meshing action of the gear 15 and the rack, the blocking plate 6 is driven to move, thereby controlling the water spray seat 5 to open and input the water in the water tank 4 into the digestion box 2 to contact with the calcium oxide for digestion. During the continuous rotation of the stirring disc 10, the first magnet 13 at different positions is driven to successively meet the second magnet 21 and repel each other, thereby driving the movable seat 19 and the piston 20 to reciprocate within the heating box 18. During this process, the water in the insulation tube 9 can be pumped into the heating box 18 and heated by the heating rod 22, and then discharged into the insulation tube 9, thereby achieving water circulation and insulating the environment within the digestion box 2, thereby ensuring the dry digestion of lime. In addition, by changing the rotation speed of the stepper motor 14, the centrifugal force exerted on the movable blade 11 can be changed, causing the movable blade 11 to reciprocate along the guide rail, thereby improving the stirring effect of the calcium oxide and water.

[0060] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs a structure and embodiment similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

[0061] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A modular lime dry digestion device for steelmaking and sintering, comprising a feed hopper, a digestion box, a controller, a water tank, and a sealing plug, wherein the feed hopper and the water tank are both arranged on the digestion box, the controller is arranged on the digestion box, and the digestion box is provided with a discharge port, the sealing plug is movably arranged in the discharge port and the two are threadedly engaged, and the invention is characterized in that: The lime dry digestion device also includes: A stirring structure is provided in the digestion tank and is connected to the water tank, and is used to mix water and calcium oxide and perform stirring treatment on them; The heat preservation module is arranged on the digestion box and connected to the stirring structure. When the stirring structure is working, the heat preservation module is controlled to keep the temperature in the digestion box warm. The stirring structure comprises: A stirring plate, which is movable inside the digestion tank; A stepper motor is disposed in the digestion tank and an output end thereof is connected to the stirring plate; a water spray seat, disposed in the digestion tank and connected to the water tank; and The valve unit is arranged in the digestion tank and connected between the water spray seat and the stirring plate, and is used to control the opening and closing of the water spray seat; The thermal insulation module comprises: The insulation pipes are arranged in a group and symmetrically on both sides of the digestion box; A heating box is provided on the digestion box, wherein a heating rod is provided in the heating box, an input hole and an output hole are provided on the heating box, and a one-way valve is provided in each of the input hole and the output hole, and the input hole and the output hole are connected to both ends of the insulation pipe; and A water drive unit is provided in the heating box and connected to the stirring plate, and is used to control the input and output of water in the heating box; The water displacement unit includes a piston, a movable seat and a transmission member; The piston is movably arranged in the heating box, the movable seat is movably arranged in the heating box and is connected to the heating box through an elastic member, one end of the movable seat is connected to the piston, and the other end of the movable seat is connected to the stirring plate through a transmission member; The transmission member includes a plurality of No. 1 magnets and No. 2 magnets. The plurality of No. 1 magnets are arranged on the stirring plate. The No. 2 magnet is arranged at the other end of the moving seat. The No. 1 magnets and the No. 2 magnets repel each other when they meet.

2. The modular lime dry smelting device for steelmaking and sintering according to claim 1, characterized in that: A plurality of guide grooves are arranged on the stirring disk, and a movable blade is movably arranged in each guide groove. The movable blade is elastically connected to the stirring disk.

3. The modular lime dry smelting device for steelmaking and sintering according to claim 1, characterized in that: The valve unit includes a gear, a damping disc, a blocking plate and a plurality of teeth; The gear and the damping disk are both movably arranged in the digestion box and are coaxially connected. The damping disk and the stirring disk are slidably matched. The blocking plate is movably arranged in the digestion box and slides through the water spray seat. The blocking plate and the digestion box are elastically connected. A No. 2 through hole is formed on the blocking plate. A No. 1 through hole is provided in the water spray seat on the moving path of the No. 2 through hole. Several teeth are equidistantly arranged on the blocking plate, and the teeth are meshed with the gear.

4. The modular dry lime digestion device for steelmaking and sintering according to claim 1, characterized in that: The thermal insulation pipe is S-shaped.

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