A system and process for gas recovery and dust handling for a mixer

Abstract

The application discloses a system and process method for gas recovery and dust treatment of a mixing machine, and relates to the technical field of gas recovery and dust treatment. The system comprises a first sealed cavity for material mixing, and a second sealed cavity outside the first sealed cavity, which wraps the first sealed cavity. The system further comprises an exhaust dust removal pipeline in communication with the first sealed cavity, and a dust remover, a condenser and a vacuum pump arranged on the exhaust dust removal pipeline. The vacuum pump is used for sucking the gas containing dust in the exhaust dust removal pipeline, the dust remover is used for absorbing the dust in the gas, and the condenser is used for condensing and recovering the harmful substances in the gas. The system can realize gas recovery, dust treatment and vacuum explosion prevention during the mixing process of the material.

Description

Technical Field

[0001] This application relates to the field of gas recovery and dust treatment technology, and particularly to a system for gas recovery and dust treatment in a mixer. It also relates to a process method for gas recovery and dust treatment in a mixer. Background Technology

[0002] A mixer is a mechanical device that mixes two or more materials evenly.

[0003] Currently, the mixing process of special materials generates harmful gases and dust. Traditional mixers can no longer meet the needs for the recovery and treatment of gases and dust generated by special materials. Therefore, it is urgent for those skilled in the art to provide a system and process for gas recovery and dust treatment in mixers to solve the problems of gas recovery and dust treatment. Summary of the Invention

[0004] The purpose of this application is to provide a system for gas recovery and dust treatment in a mixer, capable of performing gas recovery, dust treatment, and vacuum explosion protection during the material mixing process. Another purpose of this application is to provide a process method for gas recovery and dust treatment in a mixer.

[0005] To achieve the above objectives, this application provides a system for gas recovery and dust treatment in a mixer, comprising a first sealed chamber for material mixing, and a second sealed chamber surrounding the first sealed chamber; the system further comprises an exhaust dust removal pipeline communicating with the first sealed chamber, the exhaust dust removal pipeline being provided with a dust collector, a condenser and a vacuum pump, the vacuum pump being used to draw dust-containing gas into the exhaust dust removal pipeline, the dust collector being used to absorb dust in the gas, and the condenser being used to condense and recover harmful substances in the gas.

[0006] In some embodiments, the exhaust dust removal pipeline includes a main line, a first branch line, and a second branch line. The dust collector, the condenser, and the vacuum pump are installed on the main line. The first end of the first branch line and the first end of the second branch line are connected to the main line via a tee. The second end of the first branch line is connected to the first sealing cavity, and the second end of the second branch line is connected to the second sealing cavity.

[0007] In some embodiments, the system further includes a ventilation tank disposed on the main road, and a first filter disposed after the ventilation tank, the first filter being located before the dust collector, the condenser and the vacuum pump.

[0008] In some embodiments, a first solenoid valve is provided on the first branch and a second solenoid valve is provided on the second branch.

[0009] In some embodiments, the system further includes an inert gas pipeline communicating with the first sealed cavity, wherein a third solenoid valve is provided on the inert gas pipeline, and the inert gas pipeline is used to introduce inert gas into the first sealed cavity to promote the entry of gas in the first sealed cavity into the exhaust dust removal pipeline.

[0010] In some embodiments, a dust storage tank is provided on the first branch, the lower part of the dust storage tank is funnel-shaped, a first vacuum gauge is provided on the upper part of the dust storage tank, and a second filter and a second vacuum gauge are provided on the second branch.

[0011] In some embodiments, the air exchange tank, the first filter, the dust collector, the condenser, and the vacuum pump are arranged sequentially on the main road.

[0012] In some embodiments, the main road is further provided with an exhaust port located after the vacuum pump, the exhaust port being connected to a drain pipe for discharging the treated gas into an underground pipeline.

[0013] In some embodiments, the first sealing cavity is the inner cavity of the mixing cylinder, the second sealing cavity is the inner cavity of the mixing machine body, and the mixing machine body is provided with a temperature control device for adjusting the temperature of the mixing cylinder and the material.

[0014] This application also provides a process method for gas recovery and dust treatment in a mixer, applied to the aforementioned system for gas recovery and dust treatment in a mixer, comprising:

[0015] The gas in the first sealed chamber is discharged into the main road through the first branch, and the gas in the second sealed chamber is discharged into the main road through the second branch.

[0016] Dust removal treatment is performed on the gas in the main road, and harmful substances are condensed and recovered from the gas in the main road.

[0017] Compared with the above-mentioned background technology, the system for gas recovery and dust treatment of a mixer provided in this application includes a first sealed chamber for material mixing, and a second sealed chamber surrounding the first sealed chamber; the system also includes an exhaust dust removal pipeline communicating with the first sealed chamber, and a dust collector, a condenser and a vacuum pump are provided on the exhaust dust removal pipeline. The vacuum pump is used to draw gas containing dust into the exhaust dust removal pipeline, the dust collector is used to absorb dust in the gas, and the condenser is used to condense and recover harmful substances in the gas.

[0018] This system for gas recovery and dust treatment in mixers can perform gas recovery, dust treatment, and vacuum explosion protection during the material mixing process. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a system for gas recovery and dust treatment in a mixer, provided in an embodiment of this application.

[0021] Figure 2 A top view of a system for gas recovery and dust treatment in a mixer, provided in an embodiment of this application;

[0022] Figure 3 This is a schematic flow diagram of a process method for gas recovery and dust treatment in a mixer, provided in an embodiment of this application.

[0023] in:

[0024] 1-First sealing chamber, 2-Second sealing chamber, 301-Main road, 302-First branch road, 303-Second branch road, 4-Dust collector, 5-Condenser, 6-Vacuum pump, 7-T-way valve, 8-Gas exchange tank, 9-First filter, 10-First solenoid valve, 11-Second solenoid valve, 12-Dust storage tank, 13-First vacuum gauge, 14-Second filter, 15-Second vacuum gauge, 16-Exhaust port, 17-Pipeline, 18-Third vacuum gauge, 19-Manual valve, 20-Mixer granulator, 21-Top cover, 22-Mixer frame, 23-Frame. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Please refer to Figures 1 to 3 ,in, Figure 1 This is a schematic diagram of the system for gas recovery and dust treatment in a mixer provided in an embodiment of this application. Figure 2 This is a top view of a system for gas recovery and dust treatment in a mixer, provided in an embodiment of this application. Figure 3 This is a schematic flow diagram of a process method for gas recovery and dust treatment in a mixer, provided in an embodiment of this application.

[0028] like Figure 1 As shown, the system for gas recovery and dust treatment of a mixer includes an internal part of the mixer and an external part of the mixer. The internal part of the mixer has a first sealed chamber 1 and a second sealed chamber 2, and the external part of the mixer has an exhaust dust removal pipeline, a dust collector 4, a condenser 5 and a vacuum pump 6.

[0029] The function of the first sealed cavity 1 is to load and mix materials. The mixing of materials is prior art and will not be elaborated here. The second sealed cavity 2 is located outside the first sealed cavity 1, enclosing it. The function of the second sealed cavity 2 is to provide vacuum protection for the first sealed cavity 1 and the materials within it. The second sealed cavity 2 is evacuated to create a vacuum state before use. The second sealed cavity 2 also provides a second layer of protection against gases overflowing from the first sealed cavity 1, with the first sealed cavity 1 serving as the first layer of protection. Furthermore, the first sealed cavity 1 can also be evacuated to create a vacuum state; therefore, both the first sealed cavity 1 and the second sealed cavity 2 are vacuum chambers.

[0030] In one case, the exhaust dust removal pipeline is connected to the first sealing chamber 1. In another case, the exhaust dust removal pipeline can be connected to both the first sealing chamber 1 and the second sealing chamber 2.

[0031] The exhaust dust removal pipeline is equipped with a dust collector 4, a condenser 5, and a vacuum pump 6. The vacuum pump 6 serves as the power source for drawing gas containing dust into the exhaust dust removal pipeline. When the exhaust dust removal pipeline is connected to the first sealed chamber 1, the gas drawn is from the first sealed chamber 1; when the exhaust dust removal pipeline is connected to both the first sealed chamber 1 and the second sealed chamber 2, the gas drawn is from both the first sealed chamber 1 and the second sealed chamber 2. After the vacuum pump 6 delivers gas into the exhaust dust removal pipeline, the dust collector 4 treats the dust in the gas, absorbing the dust particles. Additionally, the condenser 5 recovers the gas from the exhaust dust removal pipeline, condensing and recovering harmful substances from the gas.

[0032] For example, during the mixing process of special materials, harmful substances such as acetone gas, iron molecules, and dust are generated inside the first sealed chamber 1, in addition to the mixed materials. Regarding the first sealed chamber 1 and the second sealed chamber 2, on the one hand, the second sealed chamber 2 provides a vacuum explosion-proof environment to the first sealed chamber 1 from the outside, preventing hazards caused by the violent movement of iron molecules. On the other hand, the second sealed chamber 2 acts as a second layer of protection outside the first sealed chamber 1, preventing acetone gas and dust from diffusing into the external environment and polluting it. Regarding the exhaust dust removal pipeline, on the one hand, the exhaust dust removal pipeline uses the vacuum pump 6 to send the gas to the dust collector 4 for dust treatment, removing dust from the gas. On the other hand, the exhaust dust removal pipeline also sends the gas to the condenser 5 for gas recovery, allowing acetone to be converted from gas to liquid at low temperature for recovery.

[0033] Based on the above structural and process descriptions, this system for gas recovery and dust treatment in a mixer can perform gas recovery, dust treatment, and vacuum explosion protection during the material mixing process.

[0034] Please continue to refer to this. Figure 1 In one specific embodiment, the exhaust dust removal pipeline includes a main pipeline 301, a first branch pipeline 302, and a second branch pipeline 303. A dust collector 4, a condenser 5, and a vacuum pump 6 are installed on the main pipeline 301. The first end of the first branch pipeline 302 and the first end of the second branch pipeline 303 are connected to the main pipeline 301 through a tee 7. The second end of the first branch pipeline 302 is connected to the first sealing cavity 1, and the second end of the second branch pipeline 303 is connected to the second sealing cavity 2.

[0035] In this embodiment, the first branch 302 connects to the first sealed cavity 1, and the second branch 303 connects to the second sealed cavity 2. Because of the connection between the main road 301 and the first branch 302 and the second branch 303, as well as the interaction between the vacuum pump 6 and the main road 301, the gas in the first sealed cavity 1 and the second sealed cavity 2 can be drawn into the main road 301, and then treated by the dust collector 4 and recovered by the condenser 5.

[0036] In some embodiments, the system further includes an air exchange tank 8, which is disposed on the main road 301. A first filter 9 is disposed after the air exchange tank 8, and the first filter 9 is located before the dust collector 4, the condenser 5 and the vacuum pump 6.

[0037] In this embodiment, the gas in the first branch 302 and the second branch 303 enters the main road 301 through the tee 7 and is concentrated in the gas exchange tank 8. Before the concentrated gas undergoes dust treatment and gas recovery, it is filtered by the first filter 9, thereby improving the effect of subsequent dust treatment and gas recovery.

[0038] In some embodiments, a first solenoid valve 10 is provided on the first branch 302, and a second solenoid valve 11 is provided on the second branch 303.

[0039] In this embodiment, the first solenoid valve 10 controls the opening and closing of the first branch 302, and the second solenoid valve 11 controls the opening and closing of the second branch 303. When feeding material into the mixer, that is, when loading material into the first sealed cavity 1, the first solenoid valve 10 and the second solenoid valve 11 are in the closed state; when dust treatment and gas recovery are required during or after mixing, the first solenoid valve 10 and the second solenoid valve 11 are in the open state, so that the gas in the first branch 302 and the second branch 303 enters the main road 301 through the three-way valve 7.

[0040] In one specific embodiment, the system further includes an inert gas pipeline connected to the first sealed cavity 1, and a third solenoid valve is provided on the inert gas pipeline.

[0041] In this embodiment, the inert gas pipeline serves to introduce inert gas into the first sealed cavity 1. The inert gas pipeline's opening and closing is controlled by a third solenoid valve. The inert gas pipeline is also connected to an inert gas preparation device. When dust treatment and gas recovery are required after mixing, the third solenoid valve is opened, introducing inert gas into the first sealed cavity 1. This causes the gas in the first sealed cavity 1 to be flushed out of the first sealed cavity 1 and into the first branch 302, thereby promoting the entry of the gas in the first sealed cavity 1 into the exhaust dust removal pipeline. In one case, the inert gas is nitrogen.

[0042] In some embodiments, a dust storage tank 12 is provided on the first branch 302. The lower part of the dust storage tank 12 is funnel-shaped to facilitate the material to fall back into the first sealed cavity 1. A first vacuum gauge 13 is provided on the upper part of the dust storage tank 12 to facilitate the detection of the vacuum level of the first branch 302.

[0043] A second filter 14 is installed on the second branch 303 to facilitate the filtration of gas entering the second branch 303 from the second sealed cavity 2. A second vacuum gauge 15 is also installed on the second branch 303 to facilitate the detection of the vacuum level of the second branch 303.

[0044] like Figure 1 and Figure 2As shown, in some embodiments, the air exchange tank 8, the first filter 9, the dust collector 4, the condenser 5, and the vacuum pump 6 are arranged sequentially on the main road 301, so that the gas in the first branch 302 and the second branch 303 is concentrated by the air exchange tank 8, and then, under the suction of the vacuum pump 6, passes sequentially along the main road 301 through the first filter 9, the dust collector 4, the condenser 5, and the vacuum pump 6. Therefore, the concentrated gas is filtered before the first filter 9, then the dust is treated by the dust collector 4, and then the gas is recovered by the condenser 5. Finally, the air at the vacuum pump 6 is cleaned of harmful substances and dust.

[0045] Furthermore, the main road 301 is also equipped with an exhaust port 16 located after the vacuum pump 6. The exhaust port 16 is connected to a drain pipe 17, which is used to discharge the treated gas into an underground pipeline.

[0046] In one specific embodiment, the mixer is a mixing granulator 20, which has a mixing machine body, a mixing cylinder and a top cover 21. The mixing cylinder is located inside the mixing machine body, and the top cover 21 covers the mixing machine body. The first sealing cavity 1 is the inner cavity of the mixing cylinder, and the second sealing cavity 2 is the inner cavity of the mixing machine body. The mixing machine body is equipped with a temperature control device, which is used to adjust the temperature of the mixing cylinder and the material, and to dry the material containing moisture.

[0047] exist Figure 1 In this configuration, the mixing granulator 20 is mounted on the mixing frame 22. The air exchange tank 8 is mounted on the frame 23. A manual valve 19 is installed between the vacuum pump 6 and the condenser 5. A third vacuum gauge 18 is located near the position of the tee 7.

[0048] During use, for vacuum explosion protection, the first sealing chamber 1 and the second sealing chamber 2 form a vacuum state for space protection. In specific operation, the three sets of solenoid valves are in the closed state, and the power supply of each machine is turned on and ready for use; the top cover 21 is raised, the material is added according to the standard amount, and then the top cover 21 is closed. The three sets of solenoid valves are opened, and the vacuum pump 6, the air exchange tank 8, and the dust collector 4 start working; when the third vacuum gauge 18 reaches a certain value, it is closed. At this time, the first sealing chamber 1 and the second sealing chamber 2 form a vacuum state; at the same time, the mixer is started, and the main body of the mixer drives the mixing cylinder to rotate through the motor. It runs at the set speed for a certain period of time (1 to 3 minutes), then stops running, the top cover 21 is opened, and the material is unloaded manually.

[0049] For dust treatment and gas recovery, considering that leakage of material and gas is inevitable at the contact point between the sealing part of the mixing cylinder and the rotating motion, the second sealing chamber 2 forms a second layer of protection for the first sealing chamber 1. The residual gas is sucked out by the vacuum pump 6 and the dust collector 4 and filtered to remove trace amounts of dust. At this time, the dust collector 4 is responsible for filtering and collecting dust. Then the mixed gas enters the condenser 5. The condenser 5 forms a low temperature state that can be adjusted to a minimum of -70℃ through the operation of its own three-stage compressor. At this time, the gas can be turned into liquid at any time and enter the recovery tank in the condenser 5 for recovery. The treated air is discharged into the underground pipeline through the drain pipe 17.

[0050] This application also provides a process method for gas recovery and dust treatment in a mixer, applied to the aforementioned system for gas recovery and dust treatment in a mixer, and the process method should have all the beneficial effects of the aforementioned system.

[0051] In this embodiment, the process includes: S1, discharging the gas in the first sealed chamber 1 into the main line 301 through the first branch 302, and discharging the gas in the second sealed chamber 2 into the main line 301 through the second branch 303; S2, performing dust removal treatment on the gas in the main line 301, and condensing and recovering harmful substances from the gas in the main line 301.

[0052] In one specific implementation, when dust treatment and gas recovery are required after mixing, the above-mentioned process method is used to open three sets of solenoid valves, and vacuum pump 6 works to draw the gas in the first sealed chamber 1 and the second sealed chamber 2 into the exhaust dust removal pipeline. The gas is treated for dust when passing through dust collector 4 and recovered for gas when passing through condenser 5. The treated air is discharged into the underground pipeline through drain pipe 17.

[0053] It should be noted that many of the components mentioned in this application are general standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0054] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0055] The system and process for gas recovery and dust treatment in a mixer provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A system for gas recovery and dust treatment in a mixer, characterized in that, The system includes a first sealed chamber for mixing materials, and a second sealed chamber surrounding the first sealed chamber. The system also includes an exhaust dust removal pipeline connected to the first sealed chamber. The exhaust dust removal pipeline is equipped with a dust collector, a condenser, and a vacuum pump. The vacuum pump is used to draw dust-containing gas into the exhaust dust removal pipeline, the dust collector is used to absorb dust from the gas, and the condenser is used to condense and recover harmful substances from the gas. The exhaust dust removal pipeline includes a main line, a first branch line, and a second branch line. The dust collector, the condenser, and the vacuum pump are installed on the main line. The first end of the first branch line and the first end of the second branch line are connected to the main line through a tee. The second end of the first branch line is connected to the first sealing cavity, and the second end of the second branch line is connected to the second sealing cavity. It also includes a ventilation tank, which is located on the main road, and a first filter is installed after the ventilation tank. The first filter is located before the dust collector, the condenser and the vacuum pump. A dust storage tank is provided on the first branch, the lower part of the dust storage tank is funnel-shaped, and a first vacuum gauge is provided on the upper part of the dust storage tank. A second filter and a second vacuum gauge are provided on the second branch. The first sealing cavity is the inner cavity of the mixing cylinder, and the second sealing cavity is the inner cavity of the mixing machine body. The mixing machine body is equipped with a temperature control device, which is used to adjust the temperature of the mixing cylinder and the material.

2. The system for gas recovery and dust treatment in a mixer according to claim 1, characterized in that, A first solenoid valve is installed on the first branch, and a second solenoid valve is installed on the second branch.

3. The system for gas recovery and dust treatment in a mixer according to claim 1 or 2, characterized in that, It also includes an inert gas pipeline connected to the first sealed cavity, and a third solenoid valve is provided on the inert gas pipeline. The inert gas pipeline is used to introduce inert gas into the first sealed cavity to promote the gas in the first sealed cavity to enter the exhaust dust removal pipeline.

4. The system for gas recovery and dust treatment in a mixer according to claim 1 or 2, characterized in that, The air exchange tank, the first filter, the dust collector, the condenser, and the vacuum pump are arranged sequentially on the main road.

5. The system for gas recovery and dust treatment in a mixer according to claim 4, characterized in that, The main road is also equipped with an exhaust port located after the vacuum pump. The exhaust port is connected to a pipe, which is used to discharge the treated gas into an underground pipeline.

6. A process method for gas recovery and dust treatment in a mixer, applied to the system for gas recovery and dust treatment in a mixer as described in any one of claims 1 to 5, characterized in that, include: The gas in the first sealed chamber is discharged into the main road through the first branch, and the gas in the second sealed chamber is discharged into the main road through the second branch. Dust removal treatment is performed on the gas in the main road, and harmful substances are condensed and recovered from the gas in the main road.

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