A material mixing device

Abstract

The application provides a material mixing device. A first driving member and a plurality of feeding hoppers are arranged at the top of a mixing cylinder, the lower end of the mixing cylinder is provided with a discharge port, a rotating rod is vertically arranged in the mixing cylinder and is in transmission connection with the first driving member, the first driving member is used for driving the rotating rod to rotate, a plurality of first mixing leaf plates are arranged on the rotating rod, a movable ring is rotatably arranged outside the discharge port and is in transmission connection with a second driving member through a transmission assembly, a plurality of second mixing leaf plates are arranged in the mixing cylinder, and the lower ends of the plurality of second mixing leaf plates are arranged along the inner wall of the movable ring in a ring shape, wherein the second driving member drives the movable ring to rotate in the direction opposite to the rotation direction of the rotating rod through the transmission assembly, so that the plurality of first mixing leaf plates and the plurality of second mixing leaf plates form a three-dimensional stirring.

Description

Technical Field

[0001] This invention relates to the field of coal chemical equipment, specifically a material mixing device. Background Technology

[0002] The coal chemical dry powder furnace is a key piece of equipment in the coal gasification process of the modern coal chemical industry. It is mainly used to fully react solid coal powder and gasification agent under high temperature and high pressure to convert them into core products such as syngas. It is an important hub connecting coal raw materials and subsequent chemical product processing.

[0003] However, since the current coal chemical dry powder furnace uses direct injection of coal powder and gasification agent for reaction, the coal powder is prone to agglomeration and adhesion due to factors such as humidity and pressure changes during the mixing and feeding process, resulting in extremely poor uniformity of the injected coal powder mixing, that is, the phenomenon of local coal powder concentration being too high or too low is easy to occur. Summary of the Invention

[0004] In view of this, embodiments of the present invention provide a material mixing device to solve the problem that existing coal chemical dry powder furnaces, when directly injecting coal powder and gasifying agent for reaction, are prone to agglomeration and adhesion due to factors such as humidity and pressure changes, which leads to excessively high or low local coal powder concentrations.

[0005] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0006] A material mixing device includes: a mixing cylinder, a first driving member, a second driving member, a rotating rod, a transmission assembly, a movable ring, a plurality of first mixing blades, a plurality of second mixing blades, and a plurality of feed hoppers;

[0007] The first drive unit and multiple feed hoppers are all located at the top of the mixing cylinder;

[0008] The mixing drum has a discharge port at its lower end;

[0009] The rotating rod is vertically installed inside the mixing cylinder and is connected to the first driving component, which is used to drive the rotating rod to rotate.

[0010] Multiple first mixing blades are arranged on the rotating rod;

[0011] The movable ring is rotatably mounted on the outside of the discharge port and is connected to the second drive component via a transmission assembly;

[0012] Multiple second mixing blades are disposed inside the mixing cylinder, and the lower ends of the multiple second mixing blades are arranged circumferentially along the inner wall of the movable ring. The second driving member drives the movable ring rotating rod to rotate in the opposite direction of the rotation through the transmission assembly, so that the multiple first mixing blades and the multiple second mixing blades form a three-dimensional mixing.

[0013] Optionally, the transmission assembly includes: a first gear and a second gear;

[0014] The second driving component is a motor, which is located on one side of the mixing drum;

[0015] The first gear is mounted on the shaft of the second drive component;

[0016] The second gear has an axial mounting hole for mounting a movable ring and meshes with the first gear.

[0017] Optionally, the upper part of the mixing cylinder is a cylindrical structure, and the lower part of the mixing cylinder is a conical structure.

[0018] Optionally, multiple first mixing blades are arranged circumferentially and axially along the rotating rod.

[0019] Optionally, the second mixing blade includes: a first scraper and a plurality of first mixing blades;

[0020] Multiple first mixing plates are arranged along the length direction of the scraper, and all multiple first mixing plates face the rotating rod, wherein a channel is formed between adjacent first mixing plates for the passage of the first mixing blade;

[0021] The first scraper includes a first scraping section and a second scraping section;

[0022] The first scraper section is positioned at a first preset angle in the lower chamber. The lower end of the first scraper section is connected to the movable ring, and the first scraper section is in contact with the inner wall of the lower part of the mixing cylinder.

[0023] The lower end of the second scraper section is connected to the upper end of the first scraper section and is attached to the inner wall of the upper part of the mixing cylinder.

[0024] Optional features also include: flow deflectors;

[0025] The guide is located at the top of the mixing cylinder, forming an upper chamber and a lower chamber. The center of the guide has a through hole for the rotating rod to pass through and for guiding the material in the upper chamber to the lower chamber. The guide has a conical structure, and the diameter of the upper end of the guide is larger than the diameter of the lower end of the guide.

[0026] Multiple first mixing blades and multiple second mixing blades are disposed in the lower chamber.

[0027] Optionally, it may also include: multiple third mixing blades;

[0028] Multiple third mixing blades are arranged circumferentially along the rotating rod and located in the upper chamber.

[0029] Optionally, the third mixing blade includes: a second mixing plate and a second scraper;

[0030] One end of the second mixing plate is connected to the rotating rod, and the second mixing plate and the rotating rod are set at a second preset angle;

[0031] The second scraper is positioned at a third preset angle in the upper chamber, with one end of the second scraper connected to the end of the second mixing plate away from the rotating rod, and the other end facing the rotating rod. The second scraper is in contact with the conical surface of the guide member.

[0032] Optionally, the lower end of the rotating rod is provided with helical blades.

[0033] Optional components also include: a conveyor cylinder, a third drive unit, a screw conveyor, a connecting cylinder, and an outer pipe.

[0034] The connecting cylinder is vertically positioned below the discharge port, and the movable ring is rotatably positioned between the discharge port and the connecting cylinder;

[0035] The conveying cylinder is horizontally positioned below the connecting cylinder, and a first opening is provided on the upper side of one end of the conveying cylinder to connect with the lower end of the connecting cylinder;

[0036] A second outlet for discharging material is provided on the lower side of the other end of the conveyor cylinder;

[0037] An external connector is installed at the second port and is used to connect to external equipment.

[0038] The screw conveyor is installed inside the conveyor cylinder;

[0039] The third driving component is located at one end of the conveying cylinder and is connected to the screw conveyor rod for transmission.

[0040] Based on the above, the present invention provides a material mixing device in which a first driving member and multiple feeding hoppers are disposed at the top of a mixing cylinder, a discharge port is provided at the lower end of the mixing cylinder, a rotating rod is vertically disposed inside the mixing cylinder and is connected to the first driving member for transmission. The first driving member is used to drive the rotating rod to rotate, multiple first mixing blades are disposed on the rotating rod, a movable ring is rotatably disposed outside the discharge port and is connected to the second driving member for transmission through a transmission assembly, multiple second mixing blades are disposed inside the mixing cylinder, and the lower ends of the multiple second mixing blades are arranged circumferentially along the inner wall of the movable ring. The second driving member drives the movable ring to rotate in the opposite direction to the rotation of the rotating rod through the transmission assembly, so that the multiple first mixing blades and the multiple second mixing blades form a three-dimensional mixing. The material mixing device disclosed above allows for the feeding of pulverized coal and gasifying agent into the mixing cylinder from different feed hoppers. The first driving component drives the first mixing blade to rotate via a rotating rod, while the second driving component drives the second mixing blade to rotate. The first and second mixing blades work together to perform three-dimensional mixing of the pulverized coal and gasifying agent, ensuring the mixing effect of the pulverized coal and gasifying agent, and thus ensuring the mixing effect of the pulverized coal and gasifying agent. When the mixed pulverized coal is transported to the coal chemical dry powder furnace for reaction, the stability of the reaction of the pulverized coal in the coal chemical dry powder furnace can be guaranteed. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the structure of a material mixing device provided in an embodiment of the present invention;

[0043] Figure 2 A cross-sectional view of a material mixing device provided in an embodiment of the present invention;

[0044] Figure 3 A schematic diagram of the cooperation between multiple first mixing blades and multiple second mixing blades provided in an embodiment of the present invention;

[0045] Figure 4 This is a schematic diagram of the transmission assembly provided in an embodiment of the present invention;

[0046] Figure 5 This is a schematic diagram of the transmission assembly and the second mixing blade provided in an embodiment of the present invention.

[0047] The components include: mixing cylinder 1, discharge port 1-1; first driving component 2; second driving component 3; rotating rod 4; transmission assembly 5, first gear 51, second gear 52; movable ring 6; first mixing blade 7; second mixing blade 8, first scraper 81, first mixing plate 82; feed hopper 9; guide component 10; third mixing blade 11, second mixing plate 111, second scraper 112; conveying cylinder 12; third driving component 13; spiral conveying rod 14; connecting cylinder 15; outer pipe 16; support 19; and protective cover 20. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] In this application, the terms "comprising," "including," or any other variations thereof are intended to cover a 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 a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] This invention provides a material mixing device, see [link to relevant documentation]. Figure 1 and combined Figures 2 to 5 , Figure 1 The diagram shows the structure of a material mixing device, which includes: a mixing cylinder 1, a first driving component 2, a second driving component 3, a rotating rod 4, a transmission assembly 5, a movable ring 6, multiple first mixing blades 7, multiple second mixing blades 8, and multiple feed hoppers 9.

[0051] The first drive unit 2 and multiple feed hoppers 9 are all located at the top of the mixing cylinder 1;

[0052] The lower end of the mixing cylinder 1 is provided with a discharge port 1-1;

[0053] The rotating rod 4 is vertically arranged inside the mixing cylinder 1 and is connected to the first driving member 2 for driving the rotating rod 4 to rotate.

[0054] Multiple first mixing blades 7 are disposed on the rotating rod 4;

[0055] The movable ring 6 is rotatably disposed on the outside of the discharge port 1-1 and is connected to the second drive component 3 via the transmission assembly 5.

[0056] Multiple second mixing blades 8 are disposed inside the mixing cylinder 1, and the lower ends of the multiple second mixing blades 8 are arranged circumferentially along the inner wall of the movable ring 6. The second driving member 3 drives the movable ring 6 to rotate in the opposite direction to the rotation of the rotating rod through the transmission assembly 5, so that the multiple first mixing blades 7 and the multiple second mixing blades 8 form a three-dimensional mixing.

[0057] It should be noted that the material mixing device of this application mainly mixes pulverized coal and gasifying agent, and then conveys them to the coal chemical dry powder furnace for reaction. However, the material mixing device of this application is not only used for mixing pulverized coal and gasifying agent, but can also mix other materials that need to be mixed. For ease of understanding, the following examples all use the mixing of pulverized coal and gasifying agent.

[0058] In this embodiment of the invention, the first driving member 2 and multiple feeding hoppers 9 are all disposed at the top of the mixing cylinder 1. The lower end of the mixing cylinder 1 is provided with a discharge port 1-1. The rotating rod 4 is vertically disposed inside the mixing cylinder 1 and is connected to the first driving member 2 for transmission. The first driving member 2 is used to drive the rotating rod 4 to rotate. Multiple first mixing blades 7 are disposed on the rotating rod 4. The movable ring 6 is rotatably disposed outside the discharge port 1-1 and is connected to the second driving member 3 for transmission through the transmission assembly 5. Multiple second mixing blades 8 are disposed inside the mixing cylinder 1, and the lower ends of the multiple second mixing blades 8 are arranged circumferentially along the inner wall of the movable ring 6. The second driving member 3 drives the movable ring 6 to rotate in the opposite direction to the rotation of the rotating rod 4 through the transmission assembly 5, so that the multiple first mixing blades 7 and the multiple second mixing blades 8 form a three-dimensional mixing. The material mixing device disclosed above allows for the feeding of pulverized coal and gasifying agent into the mixing cylinder 1 from different feed hoppers 9. The first driving component 2 drives the first mixing blade 7 to rotate via the rotating rod 4, while the second driving component 3 drives the second mixing blade 8 to rotate. The first mixing blade 7 and the second mixing blade 8 work together to perform three-dimensional mixing of the pulverized coal and gasifying agent, ensuring the mixing effect of the pulverized coal and gasifying agent, and thus ensuring the mixing effect of the pulverized coal and gasifying agent. When the mixed pulverized coal is transported to the coal chemical dry powder furnace for reaction, the stability of the reaction of the pulverized coal in the coal chemical dry powder furnace can be guaranteed.

[0059] Preferably, the first driving component 2 is a motor.

[0060] It should be noted that the first driving component 2 can be an electric motor or other power mechanism that can drive the rotating rod 4 to rotate (such as an internal combustion engine, a pneumatic motor, etc.). Those skilled in the art can choose according to their needs.

[0061] It should also be noted that the first drive component 2 is a 1.1kW~1.5kW explosion-proof variable frequency motor, and the rotating rod 4 is a deep groove ball dustproof bearing, model 6312, with a sealed design to prevent coal dust from entering.

[0062] After the first driving component 2 is started, it can drive the rotating rod 4 to rotate stably at 120~200r / min. The two bearings support and limit the rotating rod 4, reduce the frictional resistance during its rotation, avoid shaft wear, and ensure the smoothness of the conveying process. The rotating rod 4 can continuously push the falling coal powder forward through the rotation of the spiral blades. At the same time, it can shear and crush the slightly agglomerated coal powder, prevent the coal powder from sticking and blocking the conveying channel, and ensure that the feeding speed is stable at 0.5~2t / h.

[0063] Specifically, the transmission assembly 5 includes: a first gear 51 and a second gear 52;

[0064] The second driving component 3 is a motor, which is located on one side of the mixing drum 1;

[0065] The first gear 51 is disposed on the rotating shaft of the second driving component 3;

[0066] The second gear 52 has an axial mounting hole for mounting the movable ring 6 and meshes with the first gear 51.

[0067] It should be noted that the second driving component 3 is a motor and is set on one side of the mixing drum 1. The first gear 51 is set on the rotating shaft of the second driving component 3. The second gear 52 has an axially opened mounting hole for mounting the movable ring 6 and meshes with the first gear 51. Thus, when the second driving component 3 drives the first gear 51 to rotate, the first gear 51 will drive the second gear 52 to rotate. Since the movable ring 6 is installed in the mounting hole of the second gear 52, the rotation of the second gear 52 will drive the movable ring 6 to rotate, thereby driving the multiple second mixing blades 8 and multiple first mixing blades 7 installed on the movable ring 6 to cooperate for three-dimensional mixing.

[0068] It should also be noted that the second driving component 3 can be an electric motor or other power mechanism that can drive the first gear 51 to rotate (such as an internal combustion engine, a pneumatic motor, etc.). Those skilled in the art can choose according to their needs.

[0069] It is worth noting that the second drive component 3 uses a 0.75kW~1.5kW explosion-proof variable frequency motor with an IP65 protection level, which is suitable for dust explosion-proof working conditions and has an adjustable speed range of 0~1500r / min.

[0070] In addition, the meshing clearance between the first gear 51 and the second gear 52 in this application is controlled between 0.2 mm and 0.3 mm to ensure smooth power transmission without jamming.

[0071] Specifically, the upper part of the mixing cylinder 1 is a cylindrical structure, and the lower part of the mixing cylinder 1 is a conical structure.

[0072] It should be noted that by setting the upper part of the mixing cylinder 1 as a cylindrical structure and the lower part of the mixing cylinder 1 as a conical structure, when the coal powder and gasifying agent are mixed and enter the lower part of the mixing cylinder 1, they can more easily slide along the conical surface of the conical structure to the discharge port 1-1 under the action of gravity, effectively avoiding the problem of coal powder accumulating in the mixing cylinder 1.

[0073] Specifically, multiple first mixing blades 7 are arranged along the circumference and axial direction of the rotating rod 4.

[0074] It should be noted that by arranging multiple first mixing blades 7 along the circumference and axial direction of the rotating rod 4, the frequency and number of contact collisions between the coal powder and the gasifying agent are increased after the coal powder and the gasifying agent enter the mixing cylinder 1, so that the coal powder and the gasifying agent can be mixed more fully, effectively improving the mixing efficiency and mixing effect of the coal powder and the gasifying agent.

[0075] Specifically, the second mixing blade 8 includes: a first scraper 81 and a plurality of first mixing blades 82;

[0076] Multiple first mixing plates 82 are arranged along the length direction of the first scraper 81, and all multiple first mixing plates 82 face the rotating rod 4, wherein a channel is formed between adjacent first mixing plates 82 for the passage of the first mixing blade 7;

[0077] The first scraper 81 includes a first scraping section and a second scraping section;

[0078] The first scraper section is set at a first preset angle in the lower chamber. The lower end of the first scraper section is connected to the movable ring 6, and the first scraper section is in contact with the inner wall of the lower part of the mixing cylinder 1.

[0079] The lower end of the second scraper section is connected to the upper end of the first scraper section and is attached to the inner wall of the upper part of the mixing cylinder 1.

[0080] It should be noted that multiple first mixing plates 82 are arranged along the length of the first scraper 81, and all multiple first mixing plates 82 face the rotating rod 4. A channel for the passage of the first mixing blade 7 is formed between adjacent first mixing plates 82. The first scraper 81 includes a first scraping section and a second scraping section. The first scraping section is arranged in the lower chamber at a first preset angle. The lower end of the first scraping section is connected to the movable ring 6, and the first scraping section is in contact with the inner wall of the lower part of the mixing cylinder 1 (with a gap of less than 0.5 mm). The lower end of the second scraping section is connected to the upper end of the first scraping section and is in contact with the inner wall of the upper part of the mixing cylinder 1 (with a gap of less than 0.5 mm). With the second mixing blade 8 disclosed above, when the second driving member 3 drives the movable ring 6 to rotate, since the first scraper section is attached to the inner wall of the lower part of the mixing cylinder 1 and the second scraper section is attached to the inner wall of the upper part of the mixing cylinder 1, the movable ring 6 drives the first scraper 81 connected to the movable ring 6 to rotate, which can scrape and clean the inner wall of the mixing cylinder 1, prevent coal powder and / or gasifying agent from sticking to the inner wall of the mixing cylinder 1, and effectively avoid coal powder and / or gasifying agent from agglomerating in the mixing cylinder 1.

[0081] It should also be noted that the first preset angle of this application is the same as the cone angle of the lower part of the mixing cylinder 1. Setting the first preset angle to be the same as the cone angle of the lower part of the mixing cylinder 1 can make the first scraper better fit with the lower part of the mixing cylinder 1, thereby enabling better scraping and cleaning of the inner wall of the mixing cylinder 1.

[0082] Furthermore, the material mixing device also includes: a flow guide 10;

[0083] The guide member 10 is disposed at the upper part of the mixing cylinder 1 to form an upper chamber and a lower chamber. The guide member 10 has a through hole in the center for the rotating rod 4 to pass through and for guiding the material in the upper chamber to the lower chamber. The guide member 10 has a conical structure and the diameter of the upper end of the guide member 10 is larger than the diameter of the lower end of the guide member 10.

[0084] Multiple first mixing blades 7 and multiple second mixing blades 8 are disposed in the lower chamber.

[0085] It should be noted that by setting the guide component 10, the coal powder and gasifying agent are introduced into the corresponding feed hopper 9 and fall onto the conical surface of the guide component 10 under the action of gravity. Then, they slide along the conical surface of the guide component 10 to the through hole to gather and enter the lower chamber through the through hole. When the guide component 10 gathers the coal powder and gasifying agent together, it can form an initial mixture. Then, through the three-dimensional stirring of multiple second mixing blades 8 and multiple first mixing blades 7 in the lower chamber, the coal powder and gasifying agent can be further fully mixed, thereby further improving the mixing efficiency and mixing effect of the coal powder and gasifying agent.

[0086] Specifically, the material mixing device also includes: multiple third mixing blades 11;

[0087] Multiple third mixing blades 11 are arranged circumferentially along the rotating rod 4 and located in the upper chamber.

[0088] It should be noted that multiple third mixing blades 11 are arranged circumferentially along the rotating rod 4 and located in the upper chamber. After the pulverized coal and gasifying agent enter the upper chamber through the corresponding feed hopper 9, the multiple third mixing blades 11 stir the pulverized coal and gasifying agent, making the initial mixing of pulverized coal and gasifying agent more thorough. Then, after the pulverized coal and gasifying agent enter the lower chamber through the guide 10, they are further stirred three-dimensionally by multiple second mixing blades 8 and multiple first mixing blades 7 in the lower chamber, which can further make the pulverized coal and gasifying agent more thoroughly mixed, and further improve the mixing efficiency and mixing effect of pulverized coal and gasifying agent.

[0089] Specifically, the third mixing blade 11 includes: a second mixing plate 111 and a second scraper 112;

[0090] One end of the second mixing plate 111 is connected to the rotating rod 4, and the second mixing plate 111 and the rotating rod 4 are set at a second preset angle;

[0091] The second scraper 112 is positioned at a third preset angle in the upper chamber, with one end of the second scraper 112 connected to the end of the second mixing plate 111 away from the rotating rod 4, and the other end facing the rotating rod 4. The second scraper 112 is in contact with the conical surface of the guide member 10.

[0092] It should be noted that one end of the second mixing plate 111 is connected to the rotating rod 4, and the second mixing plate 111 and the rotating rod 4 are set at a second preset angle. The second scraper 112 is set at a third preset angle in the upper chamber, and one end of the second scraper 112 is connected to the end of the second mixing plate 111 away from the rotating rod 4, while the other end faces the rotating rod 4. The second scraper 112 is in contact with the conical surface of the guide member 10 (with a gap of less than 0.5 mm). Thus, when the rotating rod 4 rotates, it can not only drive the second mixing plate 111 to stir the coal powder and gasifying agent, but also drive the second scraper 112 to scrape and clean the conical surface of the guide member 10, preventing the coal powder and / or gasifying agent from sticking to the inner wall of the guide member 10, thereby avoiding the coal powder and / or gasifying agent from clumping on the inner wall of the guide member 10.

[0093] It should also be noted that the second preset angle of this application can be set by those skilled in the art based on the space inside the upper cavity, and no specific limitation is made here. The third preset angle is set based on the cone angle of the guide 10, so that when the rotating rod 4 drives the second scraper 112 to rotate, the second scraper 112 can always be in contact with the cone surface of the guide 10 (with a gap of less than 0.5mm).

[0094] Specifically, the lower end of the rotating rod 4 is equipped with helical blades.

[0095] It should be noted that by setting a spiral blade at the lower end of the rotating rod 4, the mixed coal powder can be continuously transported to the next stage of processing through the spiral blade, so as to achieve stable transportation of the mixed coal powder and effectively improve the coal powder transportation efficiency.

[0096] Furthermore, the material mixing device also includes: a conveying cylinder 12, a third driving component 13, a screw conveyor 14, a connecting cylinder 15, and an outer pipe 16;

[0097] The connecting cylinder 15 is vertically positioned below the discharge port 1-1, and the movable ring 6 is rotatably positioned between the discharge port 1-1 and the connecting cylinder 15.

[0098] The conveying cylinder 12 is horizontally positioned below the connecting cylinder 15, and a first opening is provided on the upper side of one end of the conveying cylinder 12 to connect with the lower end of the connecting cylinder 15.

[0099] A second outlet for discharging material is provided on the lower side of the other end of the conveying cylinder 12;

[0100] External connector 16 is installed at the second port and is used to connect to external equipment;

[0101] The screw conveyor rod 14 is disposed inside the conveyor cylinder 12;

[0102] The third driving component 13 is located at one end of the conveying cylinder 12 and is connected to the screw conveyor 14 for transmission.

[0103] It should be noted that the connecting cylinder 15 is vertically positioned below the discharge port 1-1, the movable ring 6 is rotatably positioned between the discharge port 1-1 and the connecting cylinder 15, the conveying cylinder 12 is horizontally positioned below the connecting cylinder 15, and a first opening is opened on the upper side of one end of the conveying cylinder 12 to connect with the lower end of the connecting cylinder 15, and a second opening for discharge is opened on the lower side of the other end of the conveying cylinder 12. The outer pipe 16 is positioned at the second opening and is connected to external equipment. The screw conveyor 14 is positioned inside the conveying cylinder 12, and the third drive component 13 is positioned at one end of the conveying cylinder 12 and is connected to the screw conveyor 14 for transmission. Thus, after the coal powder and gasifying agent are mixed, they can directly enter the conveying cylinder 12 through the connecting cylinder 15. Then, the third drive component 13 drives the screw conveyor 14 to rotate and transport the mixed coal powder to external equipment (such as a coal chemical dry powder furnace) for the next stage of processing, effectively preventing coal powder leakage and ensuring environmental safety.

[0104] Preferably, the outer pipe 16 is provided with a flange connection.

[0105] It should be noted that by providing flange connections to the external pipe 16, it is possible to quickly disassemble and assemble with external equipment, thereby improving the installation efficiency of the material mixing device and external equipment (such as coal chemical dry powder furnace).

[0106] It should also be noted that the flange of the external pipe 16 is a standard PN16 flange with a diameter of DN300, and is equipped with a graphite spiral wound gasket to achieve a sealed connection with external equipment.

[0107] Preferably, the material mixing device further includes a support 19 for supporting the mixing cylinder 1.

[0108] It should be noted that by setting a support 19 for supporting the mixing cylinder 1, the stability of the material mixing device during the mixing of pulverized coal and gasifying agent can be improved, ensuring the mixing efficiency and effect of pulverized coal and gasifying agent.

[0109] Preferably, the material mixing device further includes a protective cover 20 disposed on the transmission assembly 5.

[0110] It should be noted that by providing a protective cover 20 to the transmission assembly 5, external dust can be prevented from entering the transmission assembly 5 and causing damage to the transmission assembly 5.

[0111] To facilitate understanding, the material mixing device will be further explained below.

[0112] The second mixing blade 8 of this application consists of 6 to 8 blades, which are evenly arranged around the circumference of the movable ring 6. The material of the second mixing blade 8 is wear-resistant hard alloy.

[0113] Each of the second mixing blades 8 is equipped with 3 to 4 first mixing blades 82.

[0114] The rotating rod 4 has a diameter of 35mm and is made of 40Cr steel with a coaxiality error of ≤0.1mm; multiple third mixing blades 11 are fixedly connected to the outer surface of the rotating rod 4.

[0115] The second mixing plate 111 is located 50mm above the guide 10, and the length of the second mixing plate 111 is 200mm.

[0116] Multiple first mixing blades 7 are mounted on the rotating rod 4. There are 6 to 8 first mixing blades 7 arranged in 3 layers with a layer spacing of 120 mm. They are staggered with the second mixing blades 8 (with a cross gap of 10 mm).

[0117] The first driving component 2 rotates at 80~150 r / min, driving multiple first mixing blades 7 and multiple third mixing blades 11 to stir the pulverized coal, and cooperates with the second mixing plate 111 to form a three-dimensional stirring, ensuring that the pulverized coal composition deviation after mixing is ≤2% and avoiding local concentration deviation.

[0118] The connecting cylinder 15 has a conical structure and a sealing rating of IP67. The connecting cylinder 15 is equipped with an electric regulating valve. The electric regulating valve is an intelligent explosion-proof electronic regulating valve with a diameter of DN250. The control method is 4~20mA analog quantity + PLC remote control, which can realize stepless adjustment of 0~100% opening degree and adjustment accuracy of ±1%.

[0119] The electric regulating valve can flexibly adjust the pulverized coal falling speed according to the load requirements of the dry pulverized coal furnace, realize precise closed-loop control of the feed rate, and ensure the stability of the feed.

[0120] The support 19 is made of channel steel welded together with a thickness of 12mm. The two supports 19 are welded to both sides of the mixing cylinder 1 respectively. The outer surface of each support 19 has 4 φ24mm mounting holes, which are adapted to M20 expansion bolts for fixing, so as to ensure the stability of the whole machine installation.

[0121] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A material mixing device, characterized in that, include: Mixing cylinder (1), first drive unit (2), second drive unit (3), rotating rod (4), transmission assembly (5), moving ring (6), multiple first mixing blades (7), multiple second mixing blades (8), and multiple feed hoppers (9); The first driving member (2) and the plurality of feed hoppers (9) are all disposed on the top of the mixing cylinder (1); The mixing cylinder (1) has a discharge port (1-1) at its lower end. The rotating rod (4) is vertically arranged inside the mixing cylinder (1) and is connected to the first driving member (2) for transmission. The first driving member (2) is used to drive the rotating rod (4) to rotate. Multiple first mixing blades (7) are disposed on the rotating rod (4); The movable ring (6) is rotatably disposed on the outside of the discharge port (1-1) and is connected to the second driving member (3) through the transmission assembly (5); Multiple second mixing blades (8) are disposed inside the mixing cylinder (1), and the lower ends of the multiple second mixing blades (8) are arranged circumferentially along the inner wall of the movable ring (6). The second driving member (3) drives the movable ring (6) to rotate in the opposite direction to the rotation of the rotating rod (4) through the transmission assembly (5), so that the multiple first mixing blades (7) and the multiple second mixing blades (8) form a three-dimensional mixing.

2. The material mixing device according to claim 1, characterized in that, The transmission assembly (5) includes: a first gear (51) and a second gear (52); The second driving component (3) is a motor, which is located on one side of the mixing cylinder (1); The first gear (51) is disposed on the shaft of the second drive member (3); The second gear (52) has an axially formed mounting hole for mounting the movable ring (6) and meshes with the first gear (51).

3. The material mixing device according to claim 1, characterized in that, The upper part of the mixing cylinder (1) is a cylindrical structure, and the lower part of the mixing cylinder (1) is a conical structure.

4. The material mixing device according to claim 3, characterized in that, Multiple first mixing blades are arranged circumferentially and axially along the rotating rod (4).

5. The material mixing device according to claim 4, characterized in that, The second mixing blade (8) includes: a first scraper (81) and a plurality of first mixing blades (82); A plurality of first mixing plates (82) are arranged along the length direction of the first scraper (81), and the plurality of first mixing plates (82) are all facing the rotating rod (4), wherein a channel for the passage of the first mixing blade is formed between adjacent first mixing plates (82); The first scraper (81) includes a first scraping section and a second scraping section; The first scraper section is set at a first preset angle in the lower chamber, the lower end of the first scraper section is connected to the movable ring (6), and the first scraper section is in contact with the lower inner wall of the mixing cylinder (1); The lower end of the second scraper is connected to the upper end of the first scraper and is attached to the inner wall of the upper part of the mixing cylinder (1).

6. The material mixing device according to claim 3, characterized in that, Also includes: Flow guide (10); The guide member (10) is disposed on the upper part of the mixing cylinder (1) to form an upper chamber and a lower chamber. The guide member (10) has a through hole in the center for the rotating rod (4) to pass through and for guiding the material in the upper chamber to the lower chamber. The guide member (10) has a conical structure and the diameter of the upper end of the guide member (10) is larger than the diameter of the lower end of the guide member (10). Multiple first mixing blades (7) and multiple second mixing blades (8) are disposed in the lower chamber.

7. The material mixing device according to claim 6, characterized in that, Also includes: Multiple third mixing blades (11); Multiple third mixing blades (11) are arranged circumferentially along the rotating rod (4) and located in the upper chamber.

8. The material mixing device according to claim 7, characterized in that, The third mixing blade (11) includes: a second mixing plate (111) and a second scraper (112); One end of the second mixing plate (111) is connected to the rotating rod (4), and the second mixing plate (111) and the rotating rod (4) are set at a second preset angle; The second scraper (112) is set at a third preset angle in the upper chamber, and one end of the second scraper (112) is connected to the end of the second mixing plate (111) away from the rotating rod (4), and the other end faces the rotating rod (4), wherein the second scraper (112) is in contact with the conical surface of the guide (10).

9. The material mixing device according to claim 1, characterized in that, The lower end of the rotating rod (4) is provided with a helical blade.

10. The material mixing device according to claim 1, characterized in that, Also includes: Conveying cylinder (12), third drive unit (13), screw conveyor (14), connecting cylinder (15) and outer pipe (16); The connecting cylinder (15) is vertically arranged below the discharge port (1-1), and the movable ring (6) is rotatably arranged between the discharge port (1-1) and the connecting cylinder (15). The conveying cylinder (12) is arranged horizontally below the connecting cylinder (15), and a first opening is provided on the upper side of one end of the conveying cylinder (12) to connect with the lower end of the connecting cylinder (15); A second outlet for discharging material is provided on the lower side of the other end of the conveying cylinder (12); The external connector (16) is disposed at the second port and is used to communicate with external equipment; The spiral conveyor rod (14) is disposed inside the conveyor cylinder (12); The third driving component (13) is located at one end of the conveying cylinder (12) and is connected to the spiral conveying rod (14) for transmission.

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