Carbon black conveying device
By using a relay fan and frequency converter to increase negative pressure, combined with a gate valve and bypass pipeline, the problem of deposition and blockage during carbon black transportation was solved, achieving stable and efficient continuous carbon black production and reducing equipment maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-03-31
AI Technical Summary
In the carbon black production process, special carbon black EN200 is prone to deposition, which can cause blockage in the conveying pipeline. Existing technologies cannot provide sufficient suspending force, which affects production efficiency and increases costs. Furthermore, there is a lack of flexible conveying path switching mechanisms.
The negative pressure of the delivery pipeline is increased by using a relay fan and a frequency converter. Combined with the design of a slide gate valve and a bypass pipeline, the delivery path can be flexibly switched. Vibration is reduced by using shock-absorbing pads, and deposits are cleaned by using a pulse connection pipe.
It significantly improves the continuity and efficiency of carbon black production, reduces pipeline blockage rate and equipment maintenance costs, extends production time, and improves production line changeover efficiency.
Smart Images
Figure CN224061981U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of carbon black production technology, and in particular to a carbon black conveying device. Background Technology
[0002] In the production of specialty carbon black (EN200), EN200 has a low oil absorption value (50×10⁻). 5 With its high density and low concentration (m³ / kg), EN200 carbon black dust easily settles in the airflow during transport, forming deposits within the pipeline. Existing transport technologies, with their negative pressure (-0.5 to -1.0 kPa) and make-up air volume (800-2000 Nm³ / h) designs, struggle to generate sufficient levitation force to support the continuous and stable movement of EN200 carbon black dust with the airflow. As production continues, carbon black deposits gradually increase, eventually leading to frequent blockages in the transport pipeline. This not only interrupts production but also requires significant manpower and resources for cleaning and unblocking, severely impacting production efficiency and increasing costs. Furthermore, traditional transport devices lack a flexible transport path switching mechanism. When a section of the pipeline malfunctions or requires maintenance, the entire production line often has to be stopped, further exacerbating production losses. Therefore, we have introduced a carbon black transport device. Utility Model Content
[0003] The main objective of this invention is to provide a carbon black conveying device that can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A carbon black conveying device includes a main bag filter, characterized in that: a main bag connecting pipe is inserted and fixedly connected to the lower end of the main bag filter; a connecting assembly is inserted and fixedly connected to the lower end of the main bag connecting pipe; a pulse connecting pipe is inserted and fixedly connected to the outer surface of the connecting assembly; a pulse bag filter is inserted and fixedly connected to the upper end of the pulse connecting pipe; an air classifier is inserted and fixedly installed at the right end of the connecting assembly; and an air classifier outlet pipe is inserted and fixedly connected to the outer surface of the air classifier.
[0006] The connecting assembly includes an installation assembly, on the upper end of which a conveying assembly is fixedly installed. The left side of the outer surface of the conveying assembly is inserted and fixedly connected to the lower end of the main bag connecting pipe, and the right side of the outer surface of the conveying assembly is inserted and fixedly connected to the lower end of the pulse connecting pipe. The right end of the connecting assembly is inserted and fixedly connected to the outer surface of the air separator.
[0007] Preferably, the conveying assembly includes a mounting base, with a plurality of shock-absorbing pads fixedly connected to the lower end of the mounting base, and two through-hole elliptical fixing holes at the front and rear of the upper end of the mounting base, and two fixing seats fixedly connected to the upper end of the mounting base.
[0008] By adopting the above technical solution, strong vibrations are generated during the high-speed operation of the relay fan. The damping pads, which are distributed at equal intervals in pairs, can effectively absorb and disperse the vibration energy generated by the operation of the relay fan, reduce the relay fan failure caused by vibration, extend the service life of the relay fan, and ensure that the carbon black conveying device can operate stably for a long time, providing a solid guarantee for efficient production.
[0009] Preferably, the shock-absorbing pads are distributed in pairs at equal distances.
[0010] By adopting the above technical solution, the equidistant distribution of the mounting bases ensures uniform support, effectively preventing tilting or excessive local stress caused by uneven support.
[0011] Preferably, the conveying assembly includes a relay fan and a frequency converter. A first air delivery pipeline is fixedly installed at the left end of the relay fan. A bypass pipeline is fixedly connected to the outer surface of the first air delivery pipeline. A second air delivery pipeline is fixedly installed on the outer surface of the relay fan. The lower end of the bypass pipeline is fixedly connected to the outer surface of the second air delivery pipeline. A gate valve is movably installed on the outer surfaces of both the first air delivery pipeline and the bypass pipeline.
[0012] By adopting the above technical solution: a centrifugal relay fan with an air volume of 9000 Nm³ / h and a power of 75 kW is selected, and a frequency converter is used to adjust the air volume, so that the negative pressure of the pipeline is stably maintained in the range of -1.2 kPa to -1.5 kPa. Compared with the traditional conveying device, the negative pressure of the conveying pipeline is increased by more than 30%, and the air volume is increased to more than 2500 Nm³ / h, providing strong and stable airflow support for carbon black conveying. When conveying special carbon black (EN200), it can effectively suspend the carbon black dust, overcome the problems of low oil absorption value, high specific gravity and easy deposition of EN200, and significantly extend the continuous production time of EN200 from 48 hours to 155 hours. At the same time, the pipeline blockage rate is reduced by 90%, and the equipment maintenance cost is reduced by 40%, which greatly improves the production efficiency, ensures the continuity of production, and brings higher production capacity benefits to enterprises. The added bypass pipeline improves the production line switching efficiency by 50%.
[0013] Preferably, the outer surface of the relay fan is fixedly connected to the inner wall of the fixed base, and the lower end of the frequency converter is fixedly connected to the upper end of the mounting base.
[0014] By adopting the above technical solution—the fixed connection between the relay fan and the fixed base—the stability of the relay fan during operation is ensured.
[0015] Preferably, the relay fan and the frequency converter are electrically connected via a connecting line, the outer surface of the first air delivery pipeline is inserted and fixedly connected to the lower end of the main bag connecting pipe, the outer surface of the second air delivery pipeline is inserted and fixedly connected to the lower end of the pulse connecting pipe, and the right end of the second air delivery pipeline is inserted and fixedly connected to the outer surface of the air separator.
[0016] By adopting the above technical solution: the carbon black-containing airflow output from the relay fan is transmitted through the second air conveying pipeline. During this process, the pulse connecting pipe intermittently sprays gas to help clean the carbon black on the inner walls of the conveying components and connecting components, preventing deposition and blockage, and ensuring smooth conveying in the second air conveying pipeline. At the same time, the second air conveying pipeline delivers the pre-treated carbon black-containing airflow to the air separator, providing a stable material input for the air separation process, ensuring that the air separator can continuously and efficiently screen and separate carbon black, and maintaining the stable operation of the entire carbon black production process.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] In this invention, the gate valve and bypass pipeline greatly facilitate the switching of the conveying path. When the first air delivery pipeline needs maintenance or is at risk of blockage, the gate valve on the first air delivery pipeline can be quickly closed, while the gate valve on the bypass pipeline can be opened at the same time, allowing the carbon black-containing gas flow to enter the second air delivery pipeline through the bypass, thus realizing flexible switching of the conveying path. This avoids production line downtime caused by pipeline maintenance or failure, improves production line switching efficiency, significantly reduces losses caused by production interruption, and also makes maintenance work more timely and convenient, reducing equipment maintenance costs.
[0019] In this invention, by adding a relay fan, the negative pressure of the conveying pipeline is successfully increased. The strong negative pressure and sufficient air volume can effectively suspend EN200 carbon black dust, allowing it to flow smoothly in the conveying pipeline. This greatly reduces the phenomenon of carbon black deposition and blockage, significantly improves production efficiency, and ensures the continuity and stability of production. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of a carbon black conveying device according to the present invention;
[0021] Figure 2 This is a schematic diagram of the connection assembly of a carbon black conveying device according to the present invention;
[0022] Figure 3 This utility model relates to a carbon black conveying device. Figure 2 Enlarged view of the structure at point A in the image;
[0023] Figure 4 This is a schematic diagram of the installation components of a carbon black conveying device according to the present invention;
[0024] Figure 5 This is a schematic diagram of the conveying component of a carbon black conveying device according to the present invention.
[0025] In the diagram: 1. Main bag filter; 2. Main bag connecting pipe; 3. Connecting assembly; 4. Pulse connecting pipe; 5. Pulse bag filter; 6. Air separator; 7. Air separator outlet pipe; 31. Mounting assembly; 32. Conveying assembly; 311. Mounting base; 312. Vibration damping pad; 313. Oval fixing hole; 314. Fixing seat; 321. Relay fan; 322. Variable frequency controller; 323. First air delivery pipeline; 324. Bypass pipeline; 325. Second air delivery pipeline; 326. Slide valve. Detailed Implementation
[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] Please see Figure 1-5 This utility model provides a technical solution:
[0030] A carbon black conveying device includes a main bag filter 1, characterized in that: a main bag connecting pipe 2 is inserted and fixedly connected to the lower end of the main bag filter 1, a connecting component 3 is inserted and fixedly connected to the lower end of the main bag connecting pipe 2, a pulse connecting pipe 4 is inserted and fixedly connected to the outer surface of the connecting component 3, a pulse bag filter 5 is inserted and fixedly connected to the upper end of the pulse connecting pipe 4, an air classifier 6 is inserted and fixedly installed at the right end of the connecting component 3, and an air classifier outlet pipe 7 is inserted and fixedly connected to the outer surface of the air classifier 6.
[0031] In this embodiment, the connecting component 3 includes an installation component 31. A conveying component 32 is fixedly installed on the upper end of the installation component 31. The left side of the outer surface of the conveying component 32 is inserted and fixedly connected to the lower end of the main bag connecting pipe 2, and the right side of the outer surface of the conveying component 32 is inserted and fixedly connected to the lower end of the pulse connecting pipe 4. The right end of the connecting component 3 is inserted and fixedly connected to the outer surface of the air separator 6. The conveying component 32 includes an installation base 311. Several shock-absorbing pads 312 are fixedly connected to the lower end of the installation base 311. Two elliptical fixing holes 313 are opened at the front and rear of the upper end of the installation base 311. Two fixing seats 314 are fixedly connected to the upper end of the installation base 311. The several shock-absorbing pads 312 are distributed in pairs at equal distances. The conveying component 32 includes a relay fan 321 and a frequency converter 322. A first air delivery pipeline 323 is inserted and fixedly installed on the left end of the relay fan 321. A bypass pipe 324 is fixedly connected to the outer surface of the first air delivery pipe 323. A second air delivery pipe 325 is fixedly installed on the outer surface of the relay fan 321. The lower end of the bypass pipe 324 is fixedly connected to the outer surface of the second air delivery pipe 325. A gate valve 326 is movably installed on both the outer surface of the first air delivery pipe 323 and the outer surface of the bypass pipe 324. The outer surface of the relay fan 321 is fixedly connected to the inner wall of the fixed base 314. The lower end of the frequency converter 322 is fixedly connected to the upper end of the mounting base 311. The relay fan 321 and the frequency converter 322 are electrically connected through a connecting wire. The outer surface of the first air delivery pipe 323 is fixedly connected to the lower end of the main bag connecting pipe 2. The outer surface of the second air delivery pipe 325 is fixedly connected to the lower end of the pulse connecting pipe 4. The right end of the second air delivery pipe 325 is fixedly connected to the outer surface of the air separator 6.
[0032] It should be noted that this utility model is a carbon black conveying device. During use, after ensuring that the main bag filter 1 has stored an appropriate amount of carbon black to be conveyed, the power supply of the frequency converter 322 is turned on, and initial parameters are set. According to the carbon black conveying requirements, the target speed of the relay fan 321 is set. This speed is related to the air volume and negative pressure. The goal is to increase the negative pressure of the conveying pipeline to above 1.2 kPa to meet the requirements of suspending EN200 carbon black dust. The frequency converter 322 is then started, and it sends signals to the relay fan 321 through the connecting cable. The signal is activated, causing the relay fan 321 to start operating. After starting, the relay fan 321 draws in the airflow containing carbon black dust from the main bag connecting pipe 2 through the first air delivery pipeline 323. At this time, the strong suction generated by the relay fan 321 creates a negative pressure within the delivery pipeline, causing the carbon black dust to flow towards the second air delivery pipeline 325 under the influence of the airflow. During the delivery process, the frequency converter 322 monitors the negative pressure and airflow data within the delivery pipeline in real time. If the detected negative pressure or airflow deviates from the set value, the frequency converter 322 automatically adjusts... The output frequency is adjusted to change the speed of the relay fan 321, thereby stabilizing the negative pressure and air volume in the conveying pipeline and ensuring continuous and stable carbon black conveying. When maintenance is required on the first air conveying pipeline 323 or a risk of blockage is detected, the gate valve 326 on the first air conveying pipeline 323 is closed, while the gate valve 326 on the bypass pipeline 324 is opened, allowing the carbon black-containing airflow to enter the second air conveying pipeline 325 through the bypass pipeline 324. This enables flexible switching of the conveying path, ensuring the production line continues to process carbon black without interruption. In the conveying operation, the carbon black-containing airflow delivered through the second air conveying pipeline 325 enters the air separator 6. The air separator 6 separates the carbon black particles according to their different characteristics. The carbon black that meets the requirements enters the collection equipment through the air separator outlet pipe 7 for collection. During this process, the pulse connecting pipe 4 and the pulse bag filter 5 work together. The gas in the pulse bag filter 5 is intermittently pulsed into the connecting component 3 through the pulse connecting pipe 4 to remove the carbon black adhering to the inner wall of the conveying component 32 and the connecting component 3, preventing carbon black deposition and blockage, and ensuring smooth conveying.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A carbon black conveying device comprising a main bag filter (1), characterized in that: The lower end of the main bag filter (1) is fixedly connected with a main bag connecting pipe (2), the lower end of the main bag connecting pipe (2) is fixedly connected with a connecting assembly (3), the outer surface of the connecting assembly (3) is fixedly connected with a pulse connecting pipe (4), the upper end of the pulse connecting pipe (4) is fixedly connected with a pulse bag filter (5), the right end of the connecting assembly (3) is fixedly installed with an air separator (6), and the outer surface of the air separator (6) is fixedly connected with an air separator outlet pipe (7). The connecting assembly (3) comprises an installation assembly (31), the upper end of the installation assembly (31) is fixedly installed with a conveying assembly (32), the outer surface of the left part of the conveying assembly (32) is fixedly connected with the lower end of the main bag connecting pipe (2), the outer surface of the right part of the conveying assembly (32) is fixedly connected with the lower end of the pulse connecting pipe (4), and the right end of the connecting assembly (3) is fixedly connected with the outer surface of the air separator (6).
2. The carbon black delivery device of claim 1, wherein: The conveying assembly (32) comprises an installation base (311), the lower end of the installation base (311) is fixedly connected with a plurality of shock pads (312), the upper end of the installation base (311) is provided with two oval fixed holes (313) penetrating in the up-down direction at the front and rear parts, and the upper end of the installation base (311) is fixedly connected with two fixed seats (314).
3. A carbon black delivery device according to claim 2, wherein: The plurality of shock pads (312) are distributed at equal distances.
4. The carbon black delivery device of claim 2, wherein: The conveying assembly (32) comprises a booster fan (321) and a frequency converter (322), the left end of the booster fan (321) is fixedly installed with a first air conveying pipeline (323), the outer surface of the first air conveying pipeline (323) is fixedly connected with a bypass pipeline (324), the outer surface of the booster fan (321) is fixedly installed with a second air conveying pipeline (325), the lower end of the bypass pipeline (324) is fixedly connected with the outer surface of the second air conveying pipeline (325), and the outer surfaces of the first air conveying pipeline (323) and the bypass pipeline (324) are movably installed with plug valves (326).
5. A carbon black delivery device according to claim 4, wherein: The outer surface of the booster fan (321) is fixedly connected with the inner wall surface of the fixed seat (314), and the lower end of the frequency converter (322) is fixedly connected with the upper end of the installation base (311).
6. The carbon black delivery device of claim 4, wherein: The booster fan (321) and the frequency converter (322) are electrically connected through a connecting line, the outer surface of the first air conveying pipeline (323) is fixedly connected with the lower end of the main bag connecting pipe (2), the outer surface of the second air conveying pipeline (325) is fixedly connected with the lower end of the pulse connecting pipe (4), and the right end of the second air conveying pipeline (325) is fixedly connected with the outer surface of the air separator (6).