Carbon forming mixing and kneading system and method for solving uncontrolled loss of powder
By setting up sealed communication pipelines and control valves in the carbon molding and kneading system, and controlling powder circulation is controlled by using positive and negative pressure difference, the problem of uncontrolled loss of powder is solved, and the production stability and product quality are improved.
Patent Information
- Application Number
- CN202510431902.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2025-08-19
AI Technical Summary
In the prior art, the dust collection system of the carbon forming mixing system is gradually blocked as the use time is extended, and negative pressure fluctuations lead to uncontrolled loss of powder, resulting in product quality defects and fluctuations in material unit consumption.
By setting up a sealed communication pipe between the dry mixing pot and the wet mixing pot, and circulating the powder in the system using the positive and negative pressure difference to avoid spillage and dust, the control valve and double-position bottom opening door are used to control the cutting speed, and combined with heating temperature and adhesive, a sealing system is formed.
The powder is circulated in the system without spillage, avoids dust and product quality deviation, stabilizes the material formula, reduces asphalt flue gas emissions, and improves production stability.
Smart Images
Figure CN120502273A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of carbon molding, and in particular to a carbon molding mixing system and method for solving the problem of uncontrolled powder loss. Background Art
[0002] Carbon forming is a production process in which calcined coke + residual anode particles or graphite particles are added, a binder is added, heated and mixed in a kneading pot, and then a forming machine is used to produce a carbon green body with a certain geometric shape.
[0003] Pellets of varying particle sizes are metered and added to a specific ratio in an intermediate bin (re-weighed), or directly to a dry mixer (dry mixer feeding). Within the dry mixer, the materials are uniformly stirred and heated, then discharged from the dry mixer into the wet mixer. Within the wet mixer, they continue to be stirred, kneaded, and heated until the set time or temperature is reached, at which point the materials are discharged.
[0004] To prevent dust from escaping, both the dry and wet mixing pots are equipped with dust collection pipes. However, when the dry mixing pot is being fed, the fine powder in the material will be drawn into the dust collection system connected to the dry mixing pot; when the dry mixing pot is being discharged (and the wet mixing pot is being fed), the fine powder in the material will be drawn into the dust collection system connected to the wet mixing pot; the amount of fine powder drawn into the dust collection system depends on the negative pressure and the amount of instantaneous dust. As the use time increases, the pipes gradually become clogged, and the dust collection system cycles between blockage, clearing the blockage, and then clogging. The negative pressure fluctuates accordingly, causing fine powder to be drawn out, and the amount is often difficult to determine. The actual formula deviates from the set formula, resulting in product quality defects and fluctuations in the unit consumption of materials (asphalt). Summary of the Invention
[0005] The purpose of the present invention is to provide a carbon forming and kneading system and method for solving the problem of uncontrolled loss of powder, and to solve the technical problems in the prior art that the pipeline gradually becomes blocked as the use time increases, the dust collection system cycles between blockage-cleaning blockage-blockage, and the negative pressure fluctuates accordingly, resulting in fine powder being extracted, and the amount is often difficult to determine, and the actual formula deviates from the set formula, resulting in product quality defects and fluctuations in material (asphalt) unit consumption.
[0006] The present invention discloses a carbon forming kneading system for solving the problem of uncontrolled powder loss. The system comprises a dry mixing pot, the upper part of which is connected to the upper part of a weighing device via a first pipe, the lower part of which is connected to a wet mixing pot, the upper part of which is connected to the upper part of the dry mixing pot via a second pipe, and the entire kneading system is in a sealed state.
[0007] Working Principle: When the recheck scale discharges material into the dry mixing pot, the impact of the material creates positive pressure in the dry mixing pot, while the recheck scale generates negative pressure due to the material discharge. Dust in the dry mixing pot is returned to the weighing device under the influence of positive and negative pressure, preventing it from overflowing. This prevents the formula (powder content ratio) from being affected and generates no dust.
[0008] When the dry mixer discharges material into the wet mixer, the impact of the material creates positive pressure in the wet mixer, while the dry mixer creates negative pressure due to the material discharge. The dust in the wet mixer returns to the dry mixer under the influence of positive and negative pressure, preventing it from overflowing. This prevents the formula (the powder content ratio in the material) from being disrupted and generates no dust.
[0009] Furthermore, the weighing device is a review scale or a batching scale.
[0010] Furthermore, a first control valve is provided on the first pipeline.
[0011] By setting a first control valve on the first pipeline, when the review scale / batching scale discharges materials into the dry mixing pot, the valve is opened in conjunction with other valves, and the powder is returned to the review scale / metering scale under the combined action of positive pressure and negative pressure.
[0012] Furthermore, a second control valve is provided on the second pipeline.
[0013] By setting a second control valve on the second pipeline, when the dry mixing pot is discharged into the wet mixing pot, the valve is opened in conjunction with other valves, and the powder is returned to the dry mixing pot under the combined action of positive pressure and negative pressure.
[0014] Furthermore, the first pipeline is connected to the second pipeline, and a third control valve is provided on the pipeline close to the weighing device.
[0015] By connecting the first pipeline with the second pipeline, the second pipeline can be shared, and by setting the third control valve, the dust in the wet mixing pot can be controlled to return to the dry mixing pot.
[0016] Furthermore, a double bottom-opening door is provided at the lower part of the dry mixing pot.
[0017] The unloading speed is controlled by setting a double-position bottom-opening door, which ensures that the material is unloaded evenly within 2 minutes and that all the materials are unloaded in the end.
[0018] Furthermore, a double-position bottom-opening door is provided at the lower part of the wet mixing pot.
[0019] By setting a double-position bottom-opening door, the unloading speed is controlled, which ensures that the material is unloaded evenly within 2 minutes and that all the materials are unloaded in the end.
[0020] Furthermore, the upper portion of the wet mixing pot is connected to a smoke exhaust pipe. After the dry materials enter the wet mixing pot, the second control valve is closed, and the binder liquid asphalt is added to the wet mixing pot, and the asphalt smoke is discharged from the smoke exhaust pipe.
[0021] By setting up the smoke exhaust pipe, the asphalt smoke can be discharged and sent to the asphalt smoke purification system for purification.
[0022] A carbon molding and kneading method for solving the problem of uncontrolled powder loss comprises the above-mentioned kneading system.
[0023] Furthermore, the pressure in the dry mixing pot is 900-1200 Pa.
[0024] Furthermore, the pressure in the wet mixing pot is 900-1200 Pa.
[0025] Furthermore, the content of powder less than 0.075 mm in the materials in the system accounts for 32-39%.
[0026] Furthermore, the heating temperature of the dry mixing pot is 90-140°C.
[0027] By setting the heating temperature of the dry mixing pot material, the temperature difference between the material and the binder asphalt is reduced, thereby improving the penetration performance of the asphalt into the material.
[0028] Furthermore, an adhesive needs to be added to the wet mixing pot before stirring.
[0029] By adding adhesives, the aggregates are connected to form a highly plastic paste.
[0030] Furthermore, the adhesive is asphalt.
[0031] By setting the adhesive to asphalt, it can connect the aggregate in liquid form at above 160°C, and form a solid with a certain strength together with the aggregate when it is off-site.
[0032] Compared with the prior art, the present invention has the following beneficial effects:
[0033] 1. By connecting the upper and lower equipment, the upstream equipment generates negative pressure and the downstream equipment generates positive pressure when the material moves, so the powder circulates within the system without overflowing, thus solving the problem of uncontrolled powder loss in the carbon molding and kneading system. No additional power is required, and no external dust collection system is required. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only represent some embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.
[0035] Figure 1 Schematic diagram of the structure of the kneading system of the present invention.
[0036] In the above drawings, the meanings of the various symbols are: 1-dry mixing pot, 2-first pipeline, 3-weighing device, 4-wet mixing pot, 5-second pipeline, 6-first control valve, 7-second control valve, 8-exhaust pipe, 9-third control valve. DETAILED DESCRIPTION
[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.
[0038] Example 1
[0039] This embodiment discloses a carbon forming and kneading system and method for solving the problem of uncontrolled powder loss. The specific structure is as follows: Figure 1 As shown, it includes a dry mixing pot 1, the upper part of the dry mixing pot 1 is connected to the upper part of the weighing device 3 through a first pipe 2, the lower part of the dry mixing pot 1 is connected to a wet mixing pot 4, and the upper part of the wet mixing pot 4 is connected to the upper part of the dry mixing pot 1 through a second pipe 5. The entire kneading system is in a sealed state.
[0040] Working Principle: When weighing device 3 discharges material into dry mixing pot 1, all 6 tons of material must enter dry mixing pot 1 within 2 minutes. The impact of the material generates a positive pressure of 900-1200 Pa in dry mixing pot 1, while weighing device 3 generates a negative pressure of -900-1200 Pa due to the material discharge. The positive and negative pressures return the dust in dry mixing pot 1 to weighing device 3, preventing it from overflowing. This prevents the formulation from being disrupted (powder particles less than 0.075 mm account for 36%) and generates no dust.
[0041] When dry mixer 1 discharges into wet mixer 4, all 6 tons of material must enter dry mixer 1 within 2 minutes. The impact of the material creates a positive pressure of 900-1200 Pa in wet mixer 4, while dry mixer 1 generates a negative pressure of -900-1200 Pa due to the material discharge. The positive and negative pressures in wet mixer 4 return the dust in dry mixer 1 to prevent it from overflowing, thus maintaining the formula (powder content ratio) and generating no dust.
[0042] Example 2
[0043] This example, as a preferred embodiment of the present invention, discloses a carbon molding and kneading system and method for solving the problem of uncontrolled loss of powder. The only change on the basis of Example 1 is that the weighing device 3 is a review scale or a batching scale, and the first pipe 2 is provided with a first control valve 6.
[0044] By setting a first control valve 6 on the first pipeline 2, when the rechecking scale / batch scale discharges materials into the dry mixing pot 1, the valve and other valves are opened, and the powder is returned to the rechecking scale / metering scale under the combined action of positive pressure and negative pressure.
[0045] Example 3
[0046] This example, as a preferred embodiment of the present invention, discloses a carbon molding and kneading system and method for solving the problem of uncontrolled powder loss. The only change on the basis of Example 2 is that a second control valve 7 is provided on the second pipeline 5.
[0047] By setting a second control valve 7 on the second pipeline 5, when the dry mixing pot 1 is discharged into the wet mixing pot 4, the valve is opened and the other valves are closed, and the powder is returned to the dry mixing pot 1 under the combined action of positive pressure and negative pressure.
[0048] Example 4
[0049] This example, as a preferred embodiment of the present invention, discloses a carbon molding and kneading system and method for solving the problem of uncontrolled loss of powder. The only change on the basis of Example 3 is that the first pipeline 2 is connected to the second pipeline 5, and a third control valve 9 is provided on the pipeline near the weighing device 3.
[0050] By connecting the first pipeline 2 with the second pipeline 5, the second pipeline 5 can be shared. By setting the third control valve 9, it can be controlled whether the dust in the wet mixing pot 4 returns to the weighing device 3 or returns to the dry mixing pot 1.
[0051] Example 5
[0052] This example, as a preferred embodiment of the present invention, discloses a carbon molding kneading system and method for solving the problem of uncontrolled loss of powder. The only change on the basis of Example 4 is that the lower part of the dry mixing pot 1 is provided with a double-position bottom-opening door.
[0053] The unloading speed is controlled by setting a double-position bottom-opening door, which ensures that the material is unloaded evenly within 2 minutes and that all the materials are unloaded in the end.
[0054] Example 6
[0055] This example, as a preferred embodiment of the present invention, discloses a carbon molding kneading system and method for solving the problem of uncontrolled loss of powder. The only change on the basis of Example 5 is that the lower part of the wet mixing pot 4 is provided with a double-position bottom-opening door.
[0056] By setting a double-position bottom-opening door, the unloading speed is controlled, which ensures that the material is unloaded evenly within 2 minutes and that all the materials are unloaded in the end.
[0057] Example 7
[0058] This example, as a preferred embodiment of the present invention, discloses a carbon molding kneading system and method for solving the problem of uncontrolled powder loss. The only change on the basis of Example 6 is that the heating temperature of the dry mixing pot 1 is 90-140°C.
[0059] By setting the heating temperature of the material in the dry mixing pot 1, the temperature difference between the material and the binder asphalt is reduced, thereby improving the penetration performance of the asphalt into the material.
[0060] Example 8
[0061] This example, as a preferred embodiment of the present invention, discloses a carbon molding kneading system and method for solving the problem of uncontrolled powder loss. The only change on the basis of Example 7 is that an adhesive needs to be added to the wet mixing pot 4 before stirring, and the adhesive is asphalt.
[0062] By adding adhesives, the aggregates are connected to form a highly plastic paste.
[0063] By setting the adhesive to asphalt, it can connect the aggregate in liquid form at above 160°C, and form a solid with a certain strength together with the aggregate when it is off-site.
[0064] Example 9
[0065] This example, as a preferred embodiment of the present invention, discloses a carbon molding kneading system and method for solving the problem of uncontrolled loss of powder. The only change on the basis of Example 8 is that the upper part of the wet mixing pot 4 is further connected to a smoke exhaust pipe 8. After the above-mentioned dry materials enter the wet mixing pot 4, the second control valve 7 is closed, and the binder liquid asphalt is added to the wet mixing pot 4, and the asphalt smoke is discharged from the smoke exhaust pipe 8.
[0066] By providing the smoke exhaust pipe 8, the asphalt smoke can be discharged and sent to the asphalt smoke purification system for purification.
[0067] The above are the implementation methods listed in this embodiment, but this embodiment is not limited to the above optional implementation methods. Those skilled in the art can arbitrarily combine the above methods to obtain other various implementation methods. Anyone can derive other various forms of implementation methods based on the inspiration of this embodiment. The above specific implementation methods should not be understood as limiting the scope of protection of this embodiment. The scope of protection of this embodiment shall be based on the definition in the claims, and the description can be used to interpret the claims.
Claims
1. A carbon forming and kneading system for solving the problem of uncontrolled powder loss, characterized by: The invention comprises a dry mixing pot (1), wherein the upper part of the dry mixing pot (1) is connected to the upper part of a weighing device (3) via a first pipe (2), the lower part of the dry mixing pot (1) is connected to a wet mixing pot (4), and the upper part of the wet mixing pot (4) is connected to the upper part of the dry mixing pot (1) via a second pipe (5), and the entire kneading system is in a sealed state.
2. The carbon forming and kneading system for solving the problem of uncontrolled powder loss according to claim 1, characterized in that: The weighing device (3) is a check scale or a batching scale.
3. The carbon forming and kneading system for solving the problem of uncontrolled powder loss according to claim 1, characterized in that: A first control valve (6) is provided on the first pipeline (2).
4. A carbon forming and kneading system for solving the problem of uncontrolled powder loss according to claim 3, characterized in that: A second control valve (7) is provided on the second pipeline (5).
5. The carbon forming and kneading system for solving the problem of uncontrolled powder loss according to claim 4, characterized in that: The first pipeline (2) is connected to the second pipeline (5), and a third control valve (9) is provided on the pipeline close to the weighing device (3).
6. A carbon forming and kneading system for solving the problem of uncontrolled powder loss according to claim 5, characterized in that: The upper portion of the wet mixing pot (4) is also connected to a smoke exhaust pipe (8).
7. A carbon forming and kneading method for solving the problem of uncontrolled powder loss, characterized by: A carbon forming and kneading system for solving the problem of uncontrolled powder loss as described in any one of claims 1 to 6.
8. The carbon forming and kneading method for solving the problem of uncontrolled powder loss according to claim 7, characterized in that: The content of powder less than 0.075 mm in the materials in the system accounts for 32-39%.
9. The carbon forming and kneading method for solving the problem of uncontrolled powder loss according to claim 7, characterized in that: The heating temperature of the dry mixing pot (1) is 90-140°C.
10. The carbon forming and kneading method for solving the problem of uncontrolled powder loss according to claim 7, characterized in that: The wet mixing pot (4) needs to be added with adhesive before stirring.