Automatic control device for mixed and kneaded flue gas

Abstract

The utility model relates to the technical field of carbon product production, and provides an automatic control device for mixed kneading smoke, which comprises a mixed kneading machine, a smoke valve and a PLC (programmable logic controller) system, the smoke valve is mounted on the mixed kneading machine, a smoke treatment system is connected outside the smoke valve, and a vacuum pressure gauge is further mounted on the mixed kneading machine. Different actual production requirements can be met, an operator can freely switch according to specific conditions, the device can be flexibly applied to various complex working conditions, the universality and operation flexibility of the device are greatly improved, and more diversified choices are provided for the production process; the automatic control function is achieved, an automatic mode or a self-adjusting mode can be selected, and intelligent control over the smoke valve in the mixing and kneading process is achieved. In the automatic control mode, the program can be paused, the opening degree of the air valve is restored to the initial value, an observation window can be conveniently opened in the mixing and kneading process to check the paste condition, and meanwhile the problem that mixing and kneading smoke escapes due to insufficient negative pressure is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of carbon product manufacturing technology, and in particular to an automatic control device for kneading flue gas. Background Technology

[0002] The production process of specialty carbon graphite materials is complex, with kneading being a crucial step. The kneader heats fine coke powder to over 150°C and mixes it with molten liquid asphalt or asphalt particles / powder, ensuring thorough wetting, penetration, and mixing to form a paste with strong bonding. The kneading process requires controlling the volatile matter content of the paste, which is affected by factors such as the amount of asphalt used, its specifications, kneading temperature, time, and the opening of the exhaust valve.

[0003] However, existing automatic control devices for mixing flue gas still have some problems in use:

[0004] Existing kneading machines are divided into hot kneading machines and cold kneading machines. After the hot kneading meets the process requirements, it is transferred to the cold kneading machine. The flue gas valve is connected to the electrostatic precipitator, etc., which requires manual operation on site. However, the kneading machine operates in a high-temperature environment, making manual operation extremely inconvenient.

[0005] The opening of the air valve relies on manual experience for adjustment. Different people have different control methods, and there are many factors that affect the volatile matter, resulting in poor stability of manual control of the volatile matter in the paste.

[0006] Frequent manual adjustments to the equipment resulted in a high failure rate. Utility Model Content

[0007] The purpose of this invention is to provide an automatic control device for mixing flue gas, which solves the above-mentioned problems.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an automatic control device for kneading flue gas, including a kneader, a flue gas valve and a PLC system. The kneader is equipped with a flue gas valve, and the flue gas valve is externally connected to a flue gas treatment system. The kneader is also equipped with a vacuum pressure gauge, and the vacuum pressure gauge is externally connected to a PLC system.

[0009] Preferably, a vacuum pressure gauge is used to measure the pressure inside the kneader, and a PLC system is used to collect the data from the vacuum pressure gauge.

[0010] Preferably, the kneader is equipped with a kneading roller inside, and a connecting turntable is provided at both ends of the kneading roller. The kneading roller is installed between two oppositely arranged connecting turntables. The side wall of the connecting turntable is provided with a slot, and a connecting block is provided in the slot. The connecting block is fixed at the middle position of both ends of the kneading roller. The outer side wall of the connecting block is provided with a fixing groove, and the outer side wall of the slot is provided with a threaded groove. The number of threaded grooves is the same as the number of fixing grooves and their positions are directly corresponding. A threaded pin is threadedly connected to the internal threads of the corresponding set of threaded grooves and fixing grooves.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. The present invention provides an automatic control device for mixing and kneading flue gas. The device has multiple control modes to meet different actual production needs. Operators can switch freely according to specific circumstances, making the device flexible and applicable under various complex working conditions. This greatly improves the versatility and operational flexibility of the device and provides more diversified options for the production process.

[0013] 2. This utility model provides an automatic control device for kneading flue gas, which has an automatic control function and can select between automatic mode and self-adjustment mode, realizing intelligent control of the flue gas valve during the kneading process. In automatic control mode, the program can be paused to restore the valve opening to its initial value, facilitating the opening of the observation window to check the paste status during kneading. It also effectively avoids the problem of kneading flue gas escaping due to insufficient negative pressure, ensuring the safety of the operator's working environment, improving the convenience of production operations, and reducing the intensity of manual operation.

[0014] 3. This utility model provides an automatic control device for kneading flue gas. By automatically controlling the flue gas valve using a PLC, it eliminates the influence of differences in manual experience and operating techniques, and removes the problem of control instability caused by numerous influencing factors related to volatile matter. After program setting, it can accurately and stably control the flue gas valve, ensuring the stability of volatile matter control in the paste, thereby improving the paste quality and playing a key role in enhancing the performance of the final carbon and graphite material products.

[0015] 4. The automatic control device for mixing flue gas provided by this utility model avoids the need for frequent manual adjustments to the equipment, reduces the probability of equipment failure caused by frequent manual operation, improves the operational reliability and service life of the equipment, reduces equipment maintenance costs and downtime, ensures the continuity and stability of production, and helps to improve production efficiency and enterprise economic benefits.

[0016] 5. The automatic control device for mixing flue gas provided by this utility model changes the mixing roller to a detachable design, which facilitates the replacement of the mixing roller, not only making it easier to inspect, maintain and replace, but also making it easier to clean the mixing roller and prevent some impurities from remaining on the mixing roller. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the kneading machine structure of this utility model;

[0018] Figure 2 This is a partial structural cross-sectional view of the kneading machine of this utility model;

[0019] Figure 3 A partial structural cross-section of this utility model Figure 1 ;

[0020] Figure 4 A partial structural cross-section of this utility model Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the flue gas control structure of the kneader of this utility model.

[0022] The following are the annotations in the figure: 1. Kneader; 11. Kneading roller; 12. Connecting turntable; 121. Slot; 122. Connecting block; 123. Threaded groove; 124. Threaded pin; 125. Fixing groove; 2. Flue gas valve; 3. Flue gas treatment system; 4. Vacuum pressure gauge; 5. PLC system. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0025] Combination Figures 1 to 5 As shown, the present invention provides an automatic control device for kneading flue gas, comprising a kneader 1, a flue gas valve 2, and a PLC system 5. The kneader 1 is equipped with a flue gas valve 2, and the flue gas valve 2 is externally connected to a flue gas treatment system 3. The kneader 1 is also equipped with a vacuum pressure gauge 4, and the vacuum pressure gauge 4 is externally connected to the PLC system 5.

[0026] Vacuum pressure gauge 4 is used to measure the pressure inside the kneader 1, and PLC system 5 is used to collect the data from vacuum pressure gauge 4.

[0027] The kneading machine 1 is equipped with a kneading roller 11 inside. The two ends of the kneading roller 11 are provided with connecting turntables 12. The kneading roller 11 is installed between two oppositely arranged connecting turntables 12. The side wall of the connecting turntable 12 is provided with a slot 121. The slot 121 is provided with a connecting block 122. The connecting block 122 is fixed at the middle position of the two ends of the kneading roller 11. The outer side wall of the connecting block 122 is provided with a fixing groove 125. The outer side wall of the slot 121 is provided with a threaded groove 123. The number of threaded grooves 123 and the fixing grooves 125 are the same and their positions are directly corresponding. A threaded pin 124 is threadedly connected to the inside of the corresponding set of threaded grooves 123 and the fixing grooves 125.

[0028] Specifically, flue gas valve 2 is electrically adjustable and has multiple modes including manual and remote control. The opening degree of flue gas valve 2 is adjustable from 0 to 100%, and it adopts the form of a flap or slide plate, with a high-temperature resistant bushing to ensure sealing, and a temperature resistance of 300℃.

[0029] The system is equipped with a vacuum pressure gauge 4, which is used to measure the pressure inside the kneader 1, with a range of -50 kPa to 10 kPa.

[0030] The system is controlled by a PLC or PID instrument, and the control parameters can be set freely; the automatic program is divided into node mode and continuous mode, which can be selected according to actual needs.

[0031] Furthermore,

[0032] The flue gas valve 2 is an electric valve with multiple operating modes. The flue gas valve 2 is externally connected to the flue gas treatment system 3, such as an electrostatic precipitator. The high negative pressure generated by the flue gas treatment system 3 draws away the flue gas in the kneader 1. The PLC system 5 can automatically control the opening degree of the flue gas valve 2 according to the value of the vacuum pressure gauge 4.

[0033] Furthermore,

[0034] Manual mode: The flue gas valve 2 has a pure manual mode. In this mode, the opening of the flue gas valve 2 can be freely adjusted using tools such as an Allen wrench, or the opening can be freely adjusted using the buttons on the flue gas valve 2 controller.

[0035] Automatic mode:

[0036] The flue gas valve 2 is automatically executed according to the program set by the PLC system 5. In this mode, the time and opening degree of the flue gas valve 2 can be freely set. After the set time, the flue gas valve 2 will automatically open to the corresponding opening degree. As shown in the table below, the time and opening degree of the flue gas valve 2 can be set arbitrarily.

[0037]

[0038]

[0039] The manual mode is divided into node mode and continuous mode: In node mode, at a certain time node, the flue gas valve 2 automatically adjusts to the corresponding opening degree until the next time node, when the corresponding valve opening degree requirement is executed; In continuous mode, the PLC system 5 automatically calculates the running time and the opening value of the flue gas valve 2 at different time nodes, so that at a certain time point, its valve opening degree is proportionally between the two time nodes. That is, the PLC system 5 continuously adjusts the opening degree of the flue gas valve 2 according to time, until the opening degree of the flue gas valve 2 reaches the corresponding opening requirement at the next time node.

[0040] In automatic mode, a pause operation can be performed. After the pause, the system timer will continue, and the valve opening will return to the initial value. After the pause is resumed, the program will continue to execute, and the opening of flue gas valve 2 will be automatically adjusted to the set value.

[0041] Self-adjustment mode

[0042] The time and pressure values ​​can be arbitrarily set through the program set by the PLC system 5. The PLC system 5 collects the pressure data of the kneader 1 from the vacuum pressure gauge 4 and automatically adjusts the opening of the flue gas valve 2 to maintain the vacuum pressure.

[0043] The values ​​in Table 4 meet the set requirements. As shown in the table below, the time and pressure values ​​can be set arbitrarily.

[0044]

[0045] The self-adjustment mode is divided into node mode and continuous mode: In node mode, at a certain time node, the PLC controls the opening of flue gas valve 2 to make the pressure meet the set value and maintain the pressure value stability until the next time node, when a new pressure value requirement is executed; In continuous mode, the PLC system 5 automatically calculates the running time and the pressure value at different time nodes, so that the pressure value at a certain time point is proportionally between the two time nodes. That is, the PLC system 5 continuously adjusts the opening of flue gas valve 2 according to time, until the pressure value reaches the corresponding pressure requirement at the next time node.

[0046] In self-adjustment mode, a pause operation can be performed. After the pause, the system timer continues, and the PLC controls the valve opening to restore the opening of flue gas valve 2 to its initial value. After the pause is resumed, the program continues to execute, and the opening of flue gas valve 2 is automatically adjusted to the set pressure value.

[0047] Working principle:

[0048] The mixing roller 11 is a detachable design. The connecting blocks 122 at both ends of the mixing roller 11 are inserted into the inner bottom wall of the connecting turntable 12 through the slots 121 on the side wall of the connecting turntable 12. At this time, the threaded groove 123 on the outer wall of the connecting turntable 12 is aligned with the fixing groove 125 on the outer wall of the connecting block 122. The threaded pin 124 is screwed into the fixing groove 125 through the threaded groove 123 to fix the connecting block 122 in the slot 121, thus completing the installation operation of the mixing roller 11.

[0049] Similarly, by unscrewing the threaded pin 124 out of the fixing groove 125 and separating the connecting block 122 from the slot 121, the mixing roller 11 can be removed from the inside of the mixing machine 1.

[0050] The disassembly and assembly of the mixing roller 11 not only facilitates its inspection, maintenance and replacement, but also makes it easier to clean the mixing roller 11 and prevents some impurities from remaining on the mixing roller 11.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic control device for kneading flue gas, comprising a kneader (1), a flue gas valve (2), and a PLC system (5), characterized in that: The kneader (1) is equipped with a flue gas valve (2), and the flue gas valve (2) is externally connected to a flue gas treatment system (3). The kneader (1) is also equipped with a vacuum pressure gauge (4), and the vacuum pressure gauge (4) is externally connected to a PLC system (5).

2. The automatic control device for mixing flue gas according to claim 1, characterized in that: The vacuum pressure gauge (4) is used to measure the pressure inside the kneader (1), and the PLC system (5) is used to collect the data from the vacuum pressure gauge (4).

3. The automatic control device for mixing flue gas according to claim 1, characterized in that: The kneading machine (1) is equipped with a kneading roller (11) inside. The two ends of the kneading roller (11) are equipped with connecting turntables (12). The kneading roller (11) is installed between two oppositely arranged connecting turntables (12). The side wall of the connecting turntable (12) is provided with a slot (121). The slot (121) is provided with a connecting block (122). The connecting block (122) is fixed at the middle position of the two ends of the kneading roller (11). The outer side wall of the connecting block (122) is provided with a fixing groove (125). The outer side wall of the slot (121) is provided with a threaded groove (123). The number of threaded grooves (123) and the fixing grooves (125) are the same and their positions are directly corresponding. A threaded pin (124) is threadedly connected to the inside of the corresponding set of threaded grooves (123) and the fixing grooves (125).

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