Feeding and distributing system for lump ore dryer
By combining the upper and lower hoppers, along with the material distribution mechanism and special bucket structure, the problems of material sticking and clogging in lump ore are solved, achieving uniform material distribution and stable drying of lump ore, and reducing equipment energy consumption and maintenance costs.
Patent Information
- Application Number
- CN202422492388.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-10-15
AI Technical Summary
The existing feed chute cannot adapt to the characteristics of lump ore such as high water content, high powder content, and high viscosity, which easily leads to material sticking and blockage, affecting the screening effect and blast furnace smelting cost.
The design combines an upper and lower hopper, along with a material distribution mechanism and a special bucket structure. Through the material distribution cone, movable valves, and material level detection devices, it achieves efficient material distribution and uniform material distribution of lump ore, avoiding material sticking and blockage.
It achieves uniform material distribution of lump ore, reduces equipment energy consumption, increases equipment operating rate, reduces maintenance, and ensures the uniformity and stability of drying effect.
Smart Images
Figure CN223525524U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to lump ore drying cloth equipment, concretely relates to a feeding cloth system for lump ore drying machine belongs to lump ore drying technical field. BACKGROUND
[0002] Lump ore is generally high in viscosity and powder content, especially overseas imported lump ore, which generally contains about 6% moisture and more than 20% powder. Due to water transportation, long-distance transportation, multiple logistics links, open-air storage during turnover, increased damage during unloading and other reasons, the powder content of lump ore can even be more than 30%. At the same time, the increase of moisture in lump ore causes a large amount of powder to adhere to the surface of lump ore, and the screen deck of the vibrating screen is often blocked during screening, which does not achieve the screening effect, causing the powder adhering to the surface of lump ore to eventually enter the blast furnace, affecting the permeability of the blast furnace, increasing the smelting cost of the blast furnace, and affecting the stable operation of the blast furnace. Therefore, the reduction of moisture content in lump ore is of great significance to reducing the cost of ironmaking and enhancing the stability of the furnace condition.
[0003] Therefore, many steel enterprises have begun to increase the lump ore drying system. This lump ore drying process first dries the lump ore, with a moisture content of 6% to 7% before drying and 2% to 3% after drying, and then screens. The advantages of this process are obvious drying effect, which can effectively reduce the powder content of the furnace lump ore, thereby reducing the smelting cost of the blast furnace. The existing ring belt dryer has a similar structure to the ring cooler, so a feeding chute is usually used for drying conditions, which mainly has the following problems: ① The bottom of the chute body is arranged with a bottom plate, and 2~3 layers of stacking plates are arranged in the chute body. After long-term accumulation of wet powder, it is easy to cause sticking and blocking. ② The moisture content in the lump ore changes greatly, and the drying time needs to be adjusted, so the thickness of the material on the trolley should be adjusted according to the working condition. The outlet of the feeding chute is a fixed structure and cannot adapt to the adjustment of the material thickness. SUMMARY
[0004] In view of the problem that the existing feeding chute in the prior art cannot adapt to the characteristics of high moisture content, high powder content and high viscosity of lump ore, and is prone to sticking and blocking, the utility model provides a feeding and cloth system for a lump ore drying machine, which combines a double straight-through funnel-type stock bin with a special hopper-type design, realizes efficient distribution and discharge of lump ore, and avoids sticking and blocking caused by accumulation of ore. It has the characteristics of simple structure, convenient operation, stable and controllable discharge.
[0005] To achieve the above technical purposes, the technical scheme adopted by the utility model is as follows:
[0006] A feeding and distributing system for a lump ore dryer, which comprises an upper bin and a lower bin. The upper bin is designed as an inverted funnel with a narrow top and a wide bottom, and the lower bin is designed as a funnel with a wide top and a narrow bottom. The upper opening of the lower bin is connected with the lower opening of the upper bin. A distributing mechanism is arranged in the upper bin. In the running direction of the material in the lump ore dryer, the front and rear side walls of the lower bin are inclined side walls, and the other two side walls of the lower bin are vertical side walls. The angle between the front side wall of the lower bin and the vertical plane is greater than the angle between the rear side wall of the lower bin and the vertical plane.
[0007] As a preference, the angle between the front side wall and the vertical plane is 60-80°, preferably 65-75°.
[0008] As a preference, the angle between the lower rear side wall and the vertical plane is 65-85°, preferably 70-80°.
[0009] As a preference, the lower wall body of the front side wall is arranged vertically to form a vertical part. A discharge port is arranged at the bottom of the vertical part, and a movable valve is arranged at the discharge port.
[0010] As a preference, the movable valve comprises a shutter, a push rod and a driving device. The shutter is vertically arranged on the discharge port at the bottom of the vertical part. The driving device is arranged on the vertical part and located above the shutter. The upper end of the push rod is connected with the driving device, and the lower end of the push rod is connected with the shutter. The driving device drives the shutter to ascend and descend in the vertical direction through the push rod, so as to adjust the opening degree of the discharge port at the bottom of the vertical part.
[0011] As a preference, the driving device is one of a hydraulic device, a pneumatic device and an electric motor.
[0012] As a preference, the distributing mechanism in the upper bin is a distributing cone. The top cone angle of the distributing cone is opposite to the feeding port of the upper bin.
[0013] As a preference, the distributing cone comprises a supporting cone plate and a face plate. The face plate is wrapped on the upper surface of the supporting cone plate by an elastic member. Preferably, the elastic member is a spring.
[0014] As a preference, a material level meter is arranged in the lower bin. The material level meter is arranged at the upper part of the inner cavity of the lower bin and located directly below the distributing cone.
[0015] As a preference, a vibration motor is arranged on the side wall of the lower bin. Preferably, a vibration motor is independently arranged on the front side wall and the rear side wall of the lower bin.
[0016] As a preference, an inspection door is arranged at the bottom of the rear side wall. Preferably, a safety switch interlocked with the lump ore dryer is arranged on the inspection door.
[0017] Preferably, the inner surface of the lower bin side wall and the surface of the distribution cone are both lined with stainless steel wear-resistant lining plates.
[0018] In the prior art, the feeding and distributing system of the ring-belt drying device needs to adapt to the characteristics of high water content, high powder content, high viscosity and low flushing of the lump ore, reduce the sticking of the material in the chute, improve the operation rate of the device, reduce the maintenance amount of the device, make the distribution on the trolley uniform, the material surface flat, and improve the uniformity of the drying effect, and reduce the energy consumption of the drying device. When the existing feeding chute is provided with a stacking plate and the discharge port is fixed, there are phenomena of sticking and blocking of the material, and the deficiency that the material thickness cannot be adjusted. The upper bin with a distribution function is arranged on the upper part of the utility model, and the lower bin with a special hopper type is arranged on the lower part, so that the lump ore material conveyed by the belt can be efficiently dispersed and buffered, the whole process is natural and smooth, and the blocking phenomenon is avoided. In addition, a valve is arranged to adjust the opening degree of the material distribution discharge port, so as to reasonably adjust the material layer thickness Figure 2 H in the middle, so as to adapt to the working condition characteristics that the water content in the lump ore changes greatly and the drying time needs to be adjusted frequently.
[0019] In the utility model, the lump ore is mostly sent into the ring-belt dryer by the belt conveyor, the discharge port of the belt conveyor is small, the lump ore is easy to form large blocks, and directly entering the bin can cause blocking and affect the distribution of the trolley. Therefore, the distribution mechanism is arranged in the upper bin, the material conveyed by the belt is dispersed, becomes a thin material layer, slides along the surface of the distribution mechanism, and is uniformly distributed in the lower bin. In order to improve the wear resistance of the distribution mechanism, a stainless steel lining plate can be arranged on the surface of the distribution mechanism, so as to ensure the wear resistance and reduce the sticking of the material.
[0020] Further, in order to improve the distribution effect, the distribution mechanism is preferably a conical structure with a sharp upper part and a wide lower part (i.e. a distribution cone), and the top angle of the distribution cone is opposite to the feeding port of the upper bin. The lump ore (which may exist in the form of agglomeration due to long-term accumulation) from the belt conveyor falls into the upper bin and is uniformly distributed in the lower bin under the action of the distribution cone. Further, the distribution cone is designed as a double-layer design with a support cone plate and a face plate wrapped on the support cone plate, the support cone plate is fixed in the lower bin by a fixed rod or beam, and an elastic member (such as a spring) is arranged between the support cone plate and the face plate, so that the face plate has a certain activity relative to the support cone plate. When the face plate is impacted by the material above, the face plate has a certain buffering effect under the action of the elastic member, and also has a certain shock effect, which can realize the dispersion and distribution of the material, and also prevent the sticking of the material.
[0021] In the utility model, because the feeding of the belt feeder has fluctuation and the requirement of thickness adjustment, the lower stock bin needs to have a certain volume, and the lower trolley is small in size, so the lower stock bin has an upper large and lower small structure. Because the lump ore has high water content, high powder content and large viscosity, the side walls of the bucket body of the lower stock bin should reduce bending and cancel the stacking plate, and the front side wall and the rear side wall of the lower stock bin are designed as inclined side walls, and the other two side walls of the lower stock bin are designed as vertical side walls, which can effectively avoid the sticking and blocking of the powder ore after the accumulation of the powder ore. In addition, the inner wall of the lower stock bin can also be paved with stainless steel lining plates, thereby further reducing the sticking while ensuring the wear resistance.
[0022] Further, the material level detection device is also arranged in the lower stock bin at the bottom of the distributing cone, which can detect the material level in the lower stock bin in real time, avoid the situation that the material level is too low to meet the thickness adjustment and the material surface is not flat, and the material level is too high to increase the risk of blocking, and the material level detection is installed at this position to avoid the interference of the material flow and ensure the accuracy of the detection.
[0023] In the utility model, the movable valve includes a gate, a push rod and a driving device, under the action of the driving device and the push rod, the gate is lifted in the vertical direction, thereby adjusting the size of the opening degree of the discharge port at the bottom of the vertical part, and finally realizing the control of the material distribution thickness. It should be noted that the gate is arranged on the vertical part of the front side wall through a guide rod (similar to a latch), and the guide rod can move freely in the vertical direction. However, upper and lower limit limit switches are arranged at the upper end and the lower end of the guide rod (interlocked with the driving device).
[0024] In the utility model, vibration motors are arranged on the outer sides of the front and rear side walls of the lower stock bin, thereby avoiding the sticking of the inclined plate, and the other two side walls are vertically arranged, and generally do not need to be provided with vibration motors.
[0025] In the utility model, a large-size maintenance door is also arranged at the bottom of the rear side wall, when a fault occurs, the stored material in the lower stock bin can be discharged to the discharge chute of the dryer through the door, and then transported away by the belt feeder, which greatly reduces the workload of cleaning the material, and the maintenance door is provided with a door detection safety switch, which is interlocked with the dryer, so that the dryer can be normally started only in the closed state of the maintenance door.
[0026] Compared with the prior art, the utility model has the beneficial technical effects as follows:
[0027] 1: The feeding and distribution system of the utility model can adapt to the characteristics of high moisture lump ore and large viscosity, and can automatically adjust the thickness according to the working condition.
[0028] 2: The feeding and distributing system has the advantages of simple structure, convenient operation, good uniformity of distribution, no material sticking and blocking, self-adaptation of material thickness, high practicability, low investment and maintenance cost, and suitability for popularization and application. BRIEF DESCRIPTION OF DRAWINGS
[0029] Figure 1 It is a structural schematic view of the feeding chute of the prior art.
[0030] Figure 2 It is a structural schematic view of the feeding and distributing system of the utility model.
[0031] Figure 3 It is a front side view of the feeding and distributing system of the utility model.
[0032] Figure 4 It is an enlarged structural schematic view of the movable valve.
[0033] Figure 5 It is an enlarged structural schematic view of the manhole.
[0034] Figure 6 It is a structural schematic view of the material distributing cone.
[0035] Reference signs: 1: upper bin; 2: lower bin; 201: front side wall; 202: rear side wall; 203: vertical part; 204: material level meter; 205: vibration motor; 206: manhole; 207: safety switch; 3: movable valve; 301: gate plate; 302: push rod; 303: driving device; 4: material distributing cone; 401: supporting cone plate; 402: face plate; 403: elastic member. DETAILED DESCRIPTION
[0036] The technical scheme of the utility model will be illustrated below, and the scope of protection of the utility model includes but is not limited to the following embodiments.
[0037] A feeding and distributing system for lump ore drying machine, which comprises an upper bin 1 and a lower bin 2. The upper bin 1 is designed as an inverted funnel with narrow upper part and wide lower part, and the lower bin 2 is designed as a funnel with wide upper part and narrow lower part. The upper opening of the lower bin 2 is in communication with the lower opening of the upper bin 1. A material distributing mechanism is arranged in the upper bin 1. In the running direction of the material in the lump ore drying machine, the front side wall 201 and the rear side wall 202 of the lower bin 2 are both inclined side walls, and the other two side walls of the lower bin 2 are vertical side walls. The included angle between the front side wall 201 of the lower bin 2 and the vertical plane is greater than the included angle between the rear side wall 202 of the lower bin 2 and the vertical plane.
[0038] Preferably, the included angle between the front side wall 201 and the vertical plane is 60-80°, preferably 65-75°.
[0039] Preferably, the angle between the lower rear side wall 202 and the vertical plane is 65-85°, preferably 70-80°.
[0040] Preferably, the lower part of the front side wall 201 is vertically arranged to form a vertical part 203. A discharge port is formed at the bottom of the vertical part 203, and a movable valve 3 is arranged at the discharge port.
[0041] Preferably, the movable valve 3 comprises a shutter 301, a push rod 302, and a driving device 303. The shutter 301 is vertically arranged to cover the discharge port at the bottom of the vertical part 203. The driving device 303 is arranged on the vertical part 203 and located above the shutter 301. The upper end of the push rod 302 is connected to the driving device 303, and the lower end of the push rod 302 is connected to the shutter 301. The driving device 303 drives the shutter 301 to move up and down in the vertical direction through the push rod 302, thereby adjusting the opening degree of the discharge port at the bottom of the vertical part 203.
[0042] Preferably, the driving device 303 is one of a hydraulic device, a pneumatic device, or an electric motor.
[0043] Preferably, the material distribution mechanism in the upper bin 1 is a material distribution cone 4. The top cone angle of the material distribution cone 4 is opposite to the feeding port of the upper bin 1.
[0044] Preferably, the material distribution cone 4 comprises a support cone plate 401 and a face plate 402. The face plate 402 is covered on the upper surface of the support cone plate 401 by an elastic member 403. Preferably, the elastic member 403 is a spring.
[0045] Preferably, a material level meter 204 is further arranged in the lower bin 2. The material level meter 204 is arranged on the upper part of the inner cavity of the lower bin 2 and located directly below the material distribution cone 4.
[0046] Preferably, a vibration motor 205 is further arranged on the side wall of the lower bin 2. Preferably, the vibration motor 205 is independently arranged on the front side wall 201 and the rear side wall 202 of the lower bin 2.
[0047] Preferably, an access door 206 is further arranged at the bottom of the rear side wall 202. Preferably, a safety switch 207 that is interlocked with the lump ore dryer is further arranged on the access door 206.
[0048] Preferably, stainless steel wear-resistant lining plates are arranged on the inner surface of the side wall of the lower bin 2 and the surface of the material distribution cone 4. Embodiment 1
[0049] As Figures 2-5As shown, a feeding and distributing system for a lump ore dryer, which comprises an upper bin 1 and a lower bin 2. The upper bin 1 is designed as an inverted funnel with a narrow top and a wide bottom, and the lower bin 2 is designed as a funnel with a wide top and a narrow bottom. The upper opening of the lower bin 2 is in communication with the lower opening of the upper bin 1. A distributing mechanism is arranged in the upper bin 1. In the running direction of the material in the lump ore dryer, the front side wall 201 and the rear side wall 202 of the lower bin 2 are both inclined side walls, and the other two side walls of the lower bin 2 are vertical side walls. The angle between the front side wall 201 of the lower bin 2 and the vertical plane is greater than the angle between the rear side wall 202 of the lower bin 2 and the vertical plane. Example 2
[0050] Example 1 is repeated, except that the angle between the front side wall 201 and the vertical plane is 65°. Example 3
[0051] Example 1 is repeated, except that the angle between the front side wall 201 and the vertical plane is 70°. Example 4
[0052] Example 3 is repeated, except that the angle between the lower rear side wall 202 and the vertical plane is 75°. Example 5
[0053] Example 3 is repeated, except that the angle between the lower rear side wall 202 and the vertical plane is 80°. Example 6
[0054] Example 5 is repeated, except that the lower wall of the front side wall 201 is arranged vertically to form a vertical portion 203. A discharge opening is formed in the bottom of the vertical portion 203, and a movable valve 3 is arranged at the discharge opening. Example 7
[0055] Example 6 is repeated, except that the movable valve 3 comprises a shutter 301, a push rod 302 and a driving device 303. The shutter 301 is vertically arranged to cover the discharge opening in the bottom of the vertical portion 203. The driving device 303 is arranged on the vertical portion 203 and located above the shutter 301. The upper end of the push rod 302 is connected to the driving device 303, and the lower end of the push rod 302 is connected to the shutter 301. The driving device 303 drives the shutter 301 to move up and down in the vertical direction through the push rod 302, so as to adjust the opening degree of the discharge opening in the bottom of the vertical portion 203. Example 8
[0056] Example 7 is repeated, except that the driving device 303 is an electric motor. Example 9
[0057] Example 7 is repeated, except that the driving device 303 is a hydraulic device. Example 10
[0058] Example 9 is repeated, except that the distributing mechanism in the upper bin 1 is a distributing cone 4. The top cone angle of the distributing cone 4 is directed to the feeding port of the upper bin 1. Example 11
[0059] Example 10 is repeated, except that the distributing cone 4 comprises a supporting cone plate 401 and a face plate 402. The face plate 402 is covered on the upper surface of the supporting cone plate 401 by elastic members 403. Example 12
[0060] Example 11 is repeated, except that the elastic members 403 are springs. Example 13
[0061] Example 12 is repeated, except that a material level meter 204 is further arranged in the lower bin 2. The material level meter 204 is arranged on the upper portion of the inner cavity of the lower bin 2 and directly below the distributing cone 4. Example 14
[0062] Example 13 is repeated, except that a vibrating motor 205 is further arranged on the side wall of the lower bin 2. Example 15
[0063] Example 14 is repeated, except that the vibrating motor 205 is independently arranged on the front side wall 201 and the rear side wall 202 of the lower bin 2, respectively. Example 16
[0064] Example 15 is repeated, except that an access door 206 is further arranged on the bottom of the rear side wall 202. Example 17
[0065] Example 16 is repeated, except that a safety switch 207 is further arranged on the access door 206, which is interlocked with the lump ore dryer. Example 18
[0066] Example 17 is repeated, except that a stainless steel wear-resistant lining plate is arranged on the inner surface of the side wall of the lower bin 2 and the surface of the distributing cone 4.
Claims
1. A feed distribution system for a lump ore dryer, characterised in that: The system comprises an upper bin (1) and a lower bin (2); the upper bin (1) is designed as an inverted funnel with a narrow top and a wide bottom, and the lower bin (2) is designed as a funnel with a wide top and a narrow bottom; the upper opening of the lower bin (2) is in communication with the lower opening of the upper bin (1); a material distribution mechanism is arranged in the upper bin (1); in the running direction of the material in the lump ore dryer, the front side wall (201) and the rear side wall (202) of the lower bin (2) are both inclined side walls, and the other two side walls of the lower bin (2) are vertical side walls; the included angle between the front side wall (201) of the lower bin (2) and the vertical plane is greater than the included angle between the rear side wall (202) of the lower bin (2) and the vertical plane.
2. The dosing and distribution system according to claim 1, characterized in that: The included angle between the front side wall (201) and the vertical plane is 60-80°; and the included angle between the rear side wall (202) and the vertical plane is 65-85°.
3. The dosing and distribution system according to claim 2, characterized in that: The included angle between the front side wall (201) and the vertical plane is 65-75°; and the included angle between the rear side wall (202) and the vertical plane is 70-80°.
4. The dosing and distribution system of claim 1, wherein: The lower wall body of the front side wall (201) is arranged vertically to form a vertical part (203); a discharge opening is formed in the bottom of the vertical part (203) and an active valve (3) is arranged.
5. The dosing and distribution system according to claim 4, characterized in that: The active valve (3) comprises a gate plate (301), a push rod (302) and a driving device (303); the gate plate (301) is vertically arranged on the bottom discharge opening of the vertical part (203); the driving device (303) is arranged on the vertical part (203) and located on the upper side of the gate plate (301); the upper end of the push rod (302) is connected with the driving device (303), and the lower end of the push rod (302) is connected with the gate plate (301); the driving device (303) drives the gate plate (301) to ascend and descend in the vertical direction through the push rod (302) to adjust the opening degree of the bottom discharge opening of the vertical part (203).
6. The dosing and distribution system according to claim 5, characterized in that: The driving device (303) is one of a hydraulic device, a pneumatic device and an electric motor.
7. The dosing and distribution system according to any one of claims 1-6, characterized in that: The material distribution mechanism in the upper bin (1) is a material distribution cone (4); the top cone angle of the material distribution cone (4) is opposite to the feeding opening of the upper bin (1).
8. The dosing and distribution system according to claim 7, characterized in that: The material distribution cone (4) comprises a supporting cone plate (401) and a face plate (402); the face plate (402) is covered on the upper surface of the supporting cone plate (401) through an elastic member (403).
9. The dosing and distribution system according to claim 8, characterized in that: The elastic member (403) is a spring.
10. The dosing and distribution system of claim 7, wherein: A material level meter (204) is further arranged in the lower bin (2); the material level meter (204) is arranged on the upper part of the inner cavity of the lower bin (2) and located directly below the material distribution cone (4).
11. The dosing and distribution system of claim 8, wherein: A material level meter (204) is further arranged in the lower bin (2); the material level meter (204) is arranged on the upper part of the inner cavity of the lower bin (2) and located directly below the material distribution cone (4).
12. The dosing and distribution system of any of claims 1-6, 8-11, characterized in that: A vibration motor (205) is further arranged on the side wall of the lower bin (2).
13. The dosing and distribution system of claim 7, wherein: A vibration motor (205) is further arranged on the side wall of the lower bin (2).
14. The dosing and distribution system of claim 12, wherein: A vibration motor (205) is independently arranged on the front side wall (201) and the rear side wall (202) of the lower bin (2), respectively.
15. The dosing and distribution system of claim 13, wherein: Vibration motors (205) are independently arranged on the front side wall (201) and the rear side wall (202) of the lower bin (2).
16. The dosing and distribution system of any of claims 1-6, 8-11, 13-15, characterized in that: A maintenance door (206) is further arranged at the bottom of the rear side wall (202).
17. The dosing and distribution system of claim 7, wherein: A maintenance door (206) is further arranged at the bottom of the rear side wall (202).
18. The dosing and distribution system of claim 12, wherein: A maintenance door (206) is further arranged at the bottom of the rear side wall (202).
19. The dosing and distribution system of claim 16, wherein: A safety switch (207) interlocked with the lump ore dryer is further arranged on the maintenance door (206).
20. The dosing and distribution system of claim 17 or 18, wherein: A safety switch (207) interlocked with the lump ore dryer is further arranged on the maintenance door (206).
21. The dosing and distribution system of claim 7, wherein: Stainless steel wear-resistant lining plates are laid on the inner surface of the side wall of the lower bin (2) and the surface of the distribution cone (4).