Catalyst carrier forming equipment

Abstract

The invention relates to the technical field of catalyst carrier forming, in particular to catalyst carrier forming equipment. The catalyst carrier forming equipment comprises a conveying device, the conveying device comprises a conveying machine shell with a conveying cavity and a conveying mechanism installed on the conveying machine shell, and a first feeding port communicated with the conveying cavity is formed in the conveying machine shell; the extrusion forming device comprises an extrusion machine shell with an extrusion cavity and an extrusion mechanism; the extrusion chamber is communicated with the conveying chamber, so that the conveying mechanism can convey a catalyst carrier raw material into the extrusion chamber from the first feeding hole; a forming part used for extrusion forming of the catalyst carrier raw materials is arranged on the extrusion machine shell, and an extrusion mechanism used for extruding the catalyst carrier raw materials in the extrusion cavity from the extrusion cavity to the forming part for forming is installed on the extrusion machine shell. The invention aims to overcome the problem of low production efficiency of a plunger type extruder in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of catalyst carrier molding, and in particular to catalyst carrier molding equipment. Background Art

[0002] The extrusion molding of the catalyst carrier is mainly achieved by a plunger extruder. The plunger extruder includes a cylinder, a plunger and a plunger drive device, and the plunger drive device drives the plunger to move back and forth in the cylinder.

[0003] The catalyst carrier raw material is a powder. In the catalyst carrier extrusion molding process, the catalyst carrier raw material needs to be pressed into a cylindrical shape that fits inside the cylinder, and then the cylindrical catalyst carrier raw material is placed in the cylinder. Then the plunger driving device drives the plunger to extrude the catalyst carrier raw material, so that the catalyst carrier raw material is continuously extruded at the molding part on the cylinder. At the same time, the cutting device located near the molding part cuts the continuously extruded catalyst carrier raw material to form a catalyst carrier product with a preset shape.

[0004] However, when using a plunger extruder for extrusion molding, the extrusion molding process will be paused every time the cylindrical catalyst carrier raw material in the cylinder is completely extruded, and then the extrusion molding can be continued after a new cylindrical catalyst carrier raw material is loaded. Therefore, the plunger extruder cannot achieve continuous production and has low production efficiency. Summary of the invention

[0005] The purpose of the invention is to overcome the problem of low production efficiency of the plunger extruder in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a catalyst carrier molding equipment, which includes: a conveying device, the conveying device includes a conveying casing with a conveying chamber and a conveying mechanism installed on the conveying casing, and the conveying casing is provided with a first feed port connected to the conveying chamber; and an extrusion molding device, the extrusion molding device includes an extrusion casing with an extrusion chamber and an extrusion mechanism; the extrusion chamber is connected with the conveying chamber so that the conveying mechanism can convey the catalyst carrier raw material from the first feed port to the extrusion chamber; the extrusion casing is provided with a molding component for extruding the catalyst carrier raw material, and the extrusion mechanism for extruding the catalyst carrier raw material in the extrusion chamber from the extrusion chamber to the molding component for molding is installed on the extrusion casing.

[0007] In some embodiments, the extrusion mechanism includes an extrusion screw and a second drive motor. The extrusion screw is installed in an extrusion chamber. The length direction of the extrusion screw is consistent with the length direction of the extrusion chamber. The second drive motor is installed on the outside of the extrusion casing. The second drive motor can drive the extrusion screw to rotate circumferentially.

[0008] In some embodiments, the length of the extrusion screw is 7-9 times its own diameter; and / or the pitch of the extrusion screw gradually decreases along the direction from the second drive motor to the forming component, and the pitch of the extrusion screw is between 25 mm and 35 mm.

[0009] In some embodiments, the catalyst carrier molding equipment further includes a vacuum pumping device, which is connected to the extrusion chamber; and / or the vacuum degree of the extrusion chamber is between -0.03MPa and -0.04MPa.

[0010] In some embodiments, the catalyst carrier molding equipment also includes a cooling device, and a second jacket is provided on the outside of the extrusion shell; the cooling device is connected to the inside of the second jacket so that the cooling liquid with a temperature range of 0℃-10℃ provided by the cooling device can circulate between the second jacket and the cooling device.

[0011] In some embodiments, the conveying mechanism includes a conveying screw and a first drive motor. The conveying screw is installed in a conveying chamber. The length direction of the conveying screw is consistent with the length direction of the conveying chamber. The first drive motor is installed on the outside of the conveyor housing. The first drive motor can drive the conveying screw to rotate circumferentially.

[0012] In some embodiments, the length of the conveying screw is 1-1.2 times the length of the extrusion screw, the diameter of the conveying screw is consistent with the diameter of the extrusion screw, and the pitch of the conveying screw is between 30 mm and 35 mm.

[0013] In some embodiments, the conveying device also includes a feed hopper connected to the first feed port, the first feed port is opened upward, and the feed hopper is located above the first feed port; preferably, an anti-blocking device is provided between the first feed port and the feed hopper to prevent the catalyst carrier raw material from being blocked at the first feed port; more preferably, the anti-blocking device includes a connecting tube, a third drive motor and two meshing screws; the top opening and the bottom opening of the connecting tube are respectively connected to the feed hopper and the first feed port, and two meshing screws meshing with each other are horizontally installed in the connecting tube, and the third drive motor is installed on the outside of the connecting tube, and the third drive motor can drive the two meshing screws to rotate circumferentially so that the catalyst carrier raw material falls along the position between the two meshing screws.

[0014] In some embodiments, the catalyst carrier molding equipment also includes a cooling device, and a first jacket is provided on the outside of the conveyor shell; the cooling device is connected to the inside of the first jacket so that the cooling liquid with a temperature range of 0℃-10℃ provided by the cooling device can circulate between the first jacket and the cooling device.

[0015] In some embodiments, the extrusion chamber is connected to the conveying chamber through a conveying pipe, in which a distribution plate is sealed and installed, and a plurality of through holes are arranged on the distribution plate, which are cylindrical holes or conical holes whose diameter gradually decreases along the conveying direction of the catalyst carrier raw material.

[0016] The technical solution of the present invention has the following beneficial effects:

[0017] The catalyst carrier raw material fed into the first feed port can enter the conveying chamber, the conveying mechanism can convey the catalyst carrier raw material in the conveying chamber to the extrusion chamber, and the extrusion mechanism can extrude the catalyst carrier raw material in the extrusion chamber from the forming component. Therefore, the extrusion forming device can realize continuous production by only continuously feeding the catalyst carrier raw material into the conveying device, and the raw material feeding and product production can be carried out simultaneously, which helps to improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic cross-sectional view of a catalyst carrier forming device in one embodiment of the present invention.

[0019] Description of Reference Numerals

[0020] 1. Conveying device; 11. Conveying housing; 12. Conveying screw; 13. First drive motor; 14. Feed hopper; 15. Anti-blocking device; 151. Connecting cylinder; 152. Engaging screw; 2. Extrusion molding device; 21. Extrusion housing; 22. Extrusion screw; 23. Molding component; 24. Second drive motor; 25. Vacuum tube; 3. Cutting device; 31. Fourth drive motor; 32. Blade. DETAILED DESCRIPTION

[0021] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention, rather than to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0022] like Figure 1As shown, the present invention provides a catalyst carrier molding device, which includes a conveying device 1 and an extrusion molding device 2. The conveying device 1 includes a conveying casing 11 having a conveying chamber and a conveying mechanism installed on the conveying casing 11, and the conveying casing 11 is provided with a first feed port connected to the conveying chamber. The extrusion molding device 2 includes an extrusion casing 21 having an extrusion chamber and an extrusion mechanism. The extrusion chamber is connected to the conveying chamber so that the conveying mechanism can convey the catalyst carrier raw material from the first feed port to the extrusion chamber; the extrusion casing 21 is provided with a molding component 23 for extrusion molding of the catalyst carrier raw material, and an extrusion mechanism for extruding the catalyst carrier raw material in the extrusion chamber from the extrusion chamber to the molding component 23 for molding is installed on the extrusion casing 21.

[0023] In this embodiment, the catalyst carrier raw material put into the first feed port can enter the conveying chamber, the conveying mechanism can convey the catalyst carrier raw material in the conveying chamber to the extrusion chamber, and the extrusion mechanism can extrude the catalyst carrier raw material in the extrusion chamber from the molding part 23. Therefore, it is only necessary to continuously put the catalyst carrier raw material into the conveying device 1 to enable the extrusion molding device 2 to achieve continuous production, and the raw material feeding and product production can be carried out at the same time, which helps to improve production efficiency. In addition, the catalyst carrier molding equipment of the present invention does not need to press the catalyst carrier raw material into a cylindrical shape in advance, and does not need to add raw materials by suspending production.

[0024] It should be noted that the molding component 23 is a block component with a molding channel inside, and the molding channel has a preset shape and size. The molding channel of the molding component 23 is connected to the extrusion chamber, and the extrusion mechanism can squeeze the catalyst carrier raw material from the extrusion chamber into the molding channel so that the catalyst carrier raw material is formed into a specific shape. Of course, the molding component 23 can adopt a catalyst carrier molding component 23 or a catalyst carrier molding die common in the art, as long as it can be adapted to the extrusion molding device 2 of the present invention, and the present invention does not limit this.

[0025] like Figure 1 As shown, in some embodiments of the present invention, the extrusion mechanism includes an extrusion screw 22 and a second drive motor 24. The extrusion screw 22 is installed in an extrusion chamber. The length direction of the extrusion screw 22 is consistent with the length direction of the extrusion chamber. The second drive motor 24 is installed on the outside of the extrusion casing 21. The second drive motor 24 can drive the extrusion screw 22 to rotate circumferentially.

[0026] Specifically, the extrusion casing 21 has a second feed port, and the second feed port is connected to the first discharge port, and the catalyst carrier can enter the extrusion chamber through the first discharge port and the second feed port. The molding component 23 and the second feed port are spaced apart in the length direction of the extrusion chamber; in other words, the molding component 23 and the second feed port are spaced apart in the length direction of the extrusion screw 22. Of course, the distance between the molding component 23 and the second feed port needs to be as large as possible. Preferably, the molding component 23 is installed at the end of the extrusion casing 21 in the length direction of the extrusion chamber to facilitate the extrusion of the catalyst carrier raw material. Both ends of the extrusion screw 22 are rotatably installed on the shell wall of the extrusion casing 21, and one end of the extrusion screw 22 is connected to the second drive motor 24.

[0027] In this embodiment, after the catalyst carrier raw material enters the extrusion chamber, the second drive motor 24 can drive the extrusion screw 22 to rotate circumferentially, and the extrusion screw 22 extrudes the catalyst carrier raw material in the direction of the forming component 23, so that the catalyst carrier raw material is extruded from the forming component 23. In addition, during the extrusion process of the catalyst carrier raw material, the catalyst carrier raw material can also be fully stirred, which helps to form a catalyst carrier product with a uniform and compact texture.

[0028] In some embodiments, the extrusion screw 22 may be plated with a friction-resistant metal layer, such as a stainless steel layer or tungsten carbide.

[0029] In some embodiments of the present invention, the length of the extrusion screw 22 is 7-9 times its diameter.

[0030] Specifically, in order to ensure that the catalyst carrier raw material can form a dense whole when being extruded into the forming part 23, there needs to be enough stroke in the extrusion chamber to transport and extrude the catalyst carrier raw material, so the extrusion screw 22 needs to have a sufficiently long length. At the same time, there needs to be a large pressure in the extrusion chamber, for example, the pressure needs to reach 12MPa-16MPa. Therefore, the extrusion screw 22 needs to have a large enough diameter to provide a large enough torque. However, if the extrusion screw 22 is too long, it will increase the manufacturing difficulty of the entire device. It is an appropriate ratio to set the length of the extrusion screw 22 to 7-9 times its own diameter, for example, it can be 8 times.

[0031] In some embodiments of the present invention, the pitch of the extrusion screw 22 gradually decreases along the direction from the second driving motor 24 to the forming component 23, and the pitch of the extrusion screw 22 is between 25 mm and 35 mm.

[0032] Specifically, along the direction from the second drive motor 24 to the forming component 23, the extrusion screw 22 includes a screw first section, a screw middle section and a screw end section which are distributed in sequence, the screw first section is connected to the second drive motor 24, the screw first section has a pitch between 30 mm and 35 mm, the screw middle section has a pitch between 25 mm and 30 mm, and the screw end section has a pitch between 20 mm and 25 mm. The screw first section is a large pitch suitable for conveying raw materials, the screw middle section is a standard pitch suitable for conveying and extruding raw materials, and the screw end section is a double-headed pitch suitable for extruding raw materials. Therefore, along the direction from the second drive motor 24 to the forming component 23, the extrusion screw 22 gradually changes from mainly conveying to mainly extruding, and the pressure in the extrusion chamber gradually increases, which is conducive to the discharge of air in the catalyst carrier raw material and the full stirring and mixing of the catalyst carrier raw material.

[0033] In some embodiments of the present invention, the catalyst carrier molding equipment further includes a vacuum pumping device, which is connected to the extrusion chamber.

[0034] Specifically, the catalyst carrier product should be a solid product with a uniform and compact texture. When there are cavities containing air in the catalyst carrier product, the quality of the catalyst carrier product is reduced. The vacuum pumping device can continuously evacuate the catalyst carrier raw material during extrusion, so that the air in the extrusion chamber is extracted, and it is not easy to form cavities containing air in the catalyst carrier raw material, which helps to avoid the formation of cavities containing air in the catalyst carrier product. Of course, since the extrusion chamber and the conveying chamber are connected, the vacuum pumping device can also evacuate the conveying chamber to keep the conveying chamber and the extrusion chamber at a vacuum degree above -0.03MPa.

[0035] It should be noted that the vacuum device can be any conventional vacuum device in the art that can be adapted to the present invention, and the present invention does not limit this. For example, the vacuum device can be a conventional vacuum pump.

[0036] In some embodiments, a vacuum tube 25 communicating with the extrusion chamber is disposed on the extrusion housing 21 , and the vacuum tube 25 is communicated with the vacuum device.

[0037] In some embodiments of the present invention, the vacuum degree of the extrusion chamber is between -0.03MPa and -0.04MPa. Specifically, when the vacuum degree is within this range, it is difficult to form a cavity with air in the catalyst carrier raw material, and it is difficult for the catalyst carrier raw materials to bond to form a dense whole (after the catalyst carrier raw materials are bonded to form a dense whole, the extrusion screw 22 will be difficult to transport and extrude).

[0038] In some embodiments of the present invention, the catalyst carrier molding equipment also includes a cooling device, and a second jacket is provided on the outside of the extrusion casing 21; the cooling device is connected to the inside of the second jacket so that the coolant provided by the cooling device with a temperature range of 0°C-10°C can circulate between the second jacket and the cooling device.

[0039] Specifically, during the transportation of the catalyst carrier raw material, the catalyst carrier raw materials are continuously squeezed and rubbed to generate heat, and the heat of the second drive motor 24 is also conducted to the transportation chamber, thereby causing the temperature of the catalyst carrier raw material to rise. The cooling device can drive a coolant with a temperature range of 0°C-10°C to circulate between the inside of the second jacket and the cooling device, thereby reducing the temperature of the catalyst carrier raw material.

[0040] In some embodiments, the second jacket is provided with a second jacket liquid inlet and a second jacket liquid outlet, and the second jacket liquid inlet and the second jacket liquid outlet are respectively connected to the cooling device.

[0041] like Figure 1 As shown, in some embodiments of the present invention, the conveying mechanism includes a conveying screw 12 and a first drive motor 13. The conveying screw 12 is installed in a conveying chamber. The length direction of the conveying screw 12 is consistent with the length direction of the conveying chamber. The first drive motor 13 is installed on the outside of the conveying machine housing 11. The first drive motor 13 can drive the conveying screw 12 to rotate circumferentially.

[0042] Specifically, the conveyor housing 11 also has a first discharge port, which is connected to the extrusion chamber, and the catalyst carrier can enter the extrusion chamber through the first discharge port. The first feed port and the first discharge port are spaced apart in the length direction of the conveying chamber; or, the first feed port and the first discharge port are spaced apart in the length direction of the conveying screw 12. Of course, the first feed port and the first discharge port need to be kept as large a distance as possible. Both ends of the conveying screw 12 are rotatably mounted on the shell wall of the conveyor housing 11, and one end of the conveying screw 12 is connected to the first drive motor 13.

[0043] In this embodiment, after the catalyst carrier raw material enters the conveying chamber from the first feed port, the second drive motor 24 can drive the conveying screw 12 to rotate circumferentially, and the conveying screw 12 conveys the catalyst carrier raw material in the direction of the first discharge port, so that the catalyst carrier raw material is conveyed to the extrusion chamber. In addition, during the conveying process of the catalyst carrier raw material, the catalyst carrier raw material can also be fully stirred, which helps to form a catalyst carrier product with a uniform and compact texture.

[0044] In some embodiments, the side of the conveying chamber away from the first drive motor 13 is connected to the side of the extrusion chamber close to the second drive motor 24 to increase the conveying distance and the extrusion distance, thereby increasing the processing capacity of the catalyst carrier raw material.

[0045] It should be noted that in order to ensure that the catalyst carrier raw material can form a dense whole when it is extruded into the molding component 23, a large pressure is required in the extrusion chamber, for example, the pressure needs to reach 12MPa-16MPa, so the extrusion screw 22 needs to provide a sufficiently large torque. At the same time, there needs to be a sufficiently long stroke in the extrusion chamber to transport and extrude the catalyst carrier raw material, so the extrusion screw 22 also needs to have a sufficiently long length. However, if the extrusion screw 22 is too long, the extrusion screw 22 is easily damaged and will increase the difficulty of equipment manufacturing. However, the conveying chamber can assume part of the functions of conveying and stirring and mixing, which helps to make the extrusion screw 22 have a suitable length under the premise of outputting a large torque.

[0046] In some embodiments of the present invention, the length of the conveying screw 12 is 1-1.2 times the length of the extrusion screw 22. The longer length of the conveying screw 12 helps to fully stir and mix the catalyst carrier raw material. The diameter of the conveying screw 12 is consistent with the diameter of the extrusion screw 22, so the conveying screw 12 can also output a larger torque. The pitch of the conveying screw 12 is between 30 mm and 35 mm, so the conveying screw 12 has a large pitch suitable for conveying the catalyst carrier raw material. The catalyst carrier raw material will not be over-extruded by the conveying screw 12, ensuring that the catalyst carrier raw material has a certain degree of looseness when entering the extrusion chamber.

[0047] like Figure 1 As shown, in some embodiments of the present invention, the conveying device 1 further includes a feed hopper 14 connected to the first feed port, the first feed port is opened upward, and the feed hopper 14 is located above the first feed port.

[0048] Specifically, the catalyst carrier raw material can be applied from the feed hopper 14, which can make the raw material application more convenient. Preferably, the cross section of the feed hopper 14 can gradually increase from top to bottom, for example, the feed hopper 14 is set to be conical.

[0049] like Figure 1 As shown, in some embodiments of the present invention, an anti-clogging device 15 is provided between the first feed port and the feed hopper 14 for preventing the catalyst carrier raw material from being blocked at the first feed port.

[0050] Specifically, the size of the first feed port is relatively small, and a large amount of catalyst carrier raw material is easily added to the first feed port, which may cause the catalyst carrier raw material to be blocked, thereby affecting the normal operation of the conveying mechanism. The anti-blocking device 15 can control the amount of catalyst carrier raw material applied, thereby preventing the catalyst carrier raw material from being blocked at the first feed port.

[0051] like Figure 1 As shown, in some embodiments of the present invention, the anti-blocking device 15 includes a connecting cylinder 151, a third driving motor and two meshing screws 152; the top opening and the bottom opening of the connecting cylinder 151 are respectively connected to the feed hopper 14 and the first feed port, and the two meshing screws 152 meshing with each other are horizontally installed in the connecting cylinder 151, and the third driving motor is installed on the outside of the connecting cylinder 151. The third driving motor can drive the two meshing screws 152 to rotate circumferentially so that the catalyst carrier raw material falls along the position between the two meshing screws 152.

[0052] Specifically, the axial length of the meshing screw 152 is equal to the length of the top opening of the connecting cylinder 151. The sum of the radial widths of the two meshing screws 152 is greater than the width of the top opening of the connecting cylinder 151 to prevent the catalyst carrier raw material from falling between the meshing screw 152 and the cylinder wall of the connecting cylinder 151. The meshing screw 152 is rotatably installed in the connecting cylinder 151, and the two meshing screws 152 can be meshed and connected by a gear structure. For example, a gear is installed on each meshing screw 152, the gears of the two meshing screws 152 are meshed with each other, and one of the gears is connected to the third drive motor as a driving gear. The third drive motor can drive the meshing screws 152 to rotate toward each other from top to bottom. For example, Figure 1 As described above, the left engaging screw 152 rotates clockwise, and the right engaging screw 152 rotates counterclockwise.

[0053] In this embodiment, when the catalyst carrier raw material is applied to the feed hopper 14, the third drive motor drives the two meshing screws 152 to rotate. The two rotating meshing screws 152 can cause the catalyst carrier raw material to gradually fall along the position between the two meshing screws 152, thereby avoiding blockage at the first feed port due to a large amount of catalyst carrier raw material.

[0054] In some embodiments, the anti-blocking device 15 may include a fifth drive motor and a fan blade, the fifth drive motor is installed on the conveyor housing 11, the fan blade is connected to the fifth drive motor, the fan blade is located at the first feed inlet, and the fifth drive motor can drive the fan blade to rotate. The rotating fan blade can hit the catalyst carrier raw material blocked at the first feed inlet. Of course, the anti-blocking device 15 can also be other structural forms, and the present invention is not limited thereto.

[0055] In some embodiments of the present invention, the catalyst carrier molding equipment also includes a cooling device, and a first jacket is provided on the outside of the conveyor housing 11; the cooling device is connected to the inside of the first jacket so that the coolant provided by the cooling device can circulate between the first jacket and the cooling device.

[0056] Specifically, during the transportation of the catalyst carrier raw materials, the catalyst carrier raw materials are constantly squeezed and rubbed to generate heat, and the heat of the first drive motor 13 is also conducted to the transportation chamber, thereby causing the temperature of the catalyst carrier raw materials to rise. The increase in the temperature of the catalyst carrier raw materials may reduce the quality of the catalyst carrier product. The cooling device can drive a coolant with a temperature range of 0°C-10°C to circulate between the interior of the first jacket and the cooling device. The coolant transported to the interior of the first jacket can absorb the heat of the transport shell and the catalyst carrier raw material to reduce the temperature of the catalyst carrier raw material. The cooling device can drive the coolant that absorbs heat to return to the cooling device for heat exchange, so that the temperature of the coolant returned to the cooling device is reduced to 0°C-10°C.

[0057] It should be noted that the cooling device may be any conventional cooling device in the art that can be adapted to the present invention, and the present invention does not limit this.

[0058] In some embodiments, the first jacket is provided with a first jacket liquid inlet and a first jacket liquid outlet, and the first jacket liquid inlet and the first jacket liquid outlet are respectively connected to the cooling device.

[0059] In some embodiments of the present invention, the extrusion chamber is connected to the conveying chamber through a conveying pipe, and a distribution plate is sealed in the conveying pipe. The distribution plate is provided with a plurality of through holes, which are cylindrical holes or conical holes whose diameters gradually decrease along the conveying direction of the catalyst carrier raw material.

[0060] Specifically, the delivery pipe is connected to the side of the extrusion chamber, so the port of the delivery pipe is opposite to the extrusion screw 22. The catalyst carrier raw material has a large pressure when entering the extrusion chamber from the delivery pipe. The distribution plate can bear part of the pressure to reduce the pressure of the catalyst carrier raw material on the extrusion screw 22, thereby preventing the extrusion screw 22 from deforming due to long-term radial pressure. In addition, the cylindrical hole is particularly suitable for catalyst carrier raw materials with a higher water content, and the catalyst carrier raw materials are not easy to be blocked, such as catalyst carrier raw materials with a water content of 15%-20%; the conical hole is particularly suitable for catalyst carrier raw materials with a lower water content. The catalyst carrier raw materials can be extruded once when passing through the conical hole to prevent air from entering the extrusion chamber, such as catalyst carrier raw materials with a water content of 12%-15%.

[0061] In some embodiments of the present invention, a pressure relief device is further provided on the conveying pipeline. The pressure relief device includes a pressure relief pipe, the end of which is connected to the conveying pipeline, and an end cap is placed at the head end of the pressure relief pipe. Since the extrusion chamber is under negative pressure, the conveying pipeline connected to the extrusion chamber is also under negative pressure. Under the influence of the negative pressure, the end cap is sealed and fitted to the head end of the pressure relief pipe. When a fault occurs in the extrusion chamber and the catalyst carrier raw material cannot be extruded smoothly, the catalyst carrier raw material can push the end cap open and be discharged from the pressure relief pipe to prevent excessive raw material from being blocked in the extrusion chamber.

[0062] like Figure 1 As shown, in some embodiments of the present invention, the catalyst carrier molding equipment also includes a cutting device 3 distributed relative to the molding component 23, and the cutting device 3 includes a fourth drive motor 31 and a blade 32. The fourth drive motor 31 can drive the blade 32 to cut the catalyst carrier raw material of the extruded molding component 23 perpendicular to the extrusion direction of the catalyst carrier raw material.

[0063] Specifically, the cutting device 3 is located outside the conveying chamber and the extrusion chamber. Preferably, the cutting device 3 can be connected to the outside of the extrusion shell to ensure that the position of the cutting device 3 is fixed. Of course, the cutting device 3 can also be fixed to the relative position of the molding component 23 in other ways, which is not limited by the present invention. The rotating shaft of the fourth drive motor 31 faces the direction of the extrusion shell, and the blade 32 is installed on the rotating shaft of the fourth drive motor 31. The blade 32 can cut in a direction perpendicular to the extrusion direction of the catalyst carrier raw material, so that the catalyst carrier raw material is cut into a catalyst carrier product of a preset shape and size. Of course, the blade 32 is spaced apart from the port of the molding component 23 by a preset spacing so that the catalyst carrier product has a preset length.

[0064] In some embodiments, the blade 32 is in a straight line shape, the two ends of the blade 32 are cutting parts, the middle of the blade 32 is a mounting part, and the mounting part is connected to the fourth drive motor 31. In some embodiments, the blade 32 is in a cross shape, the four ends of the blade 32 are cutting parts, the middle of the blade 32 is a mounting part, and the mounting part is connected to the fourth drive motor 31.

[0065] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the present invention to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A catalyst carrier forming device, characterized in that: include: A conveying device (1), the conveying device (1) comprising a conveying casing (11) having a conveying chamber and a conveying mechanism installed on the conveying casing (11), the conveying casing (11) being provided with a first feed port communicating with the conveying chamber; and An extrusion molding device (2), the extrusion molding device (2) comprising an extrusion casing (21) having an extrusion chamber and an extrusion mechanism; the extrusion chamber is connected to the conveying chamber so that the conveying mechanism can convey the catalyst carrier raw material from the first feed port to the extrusion chamber; the extrusion casing (21) is provided with a molding component (23) for extruding the catalyst carrier raw material, and the extrusion mechanism for extruding the catalyst carrier raw material in the extrusion chamber from the extrusion chamber to the molding component (23) for molding is installed on the extrusion casing (21).

2. The catalyst carrier forming equipment according to claim 1, characterized in that: The extrusion mechanism comprises an extrusion screw (22) and a second drive motor (24); the extrusion screw (22) is installed in the extrusion chamber, the length direction of the extrusion screw (22) is consistent with the length direction of the extrusion chamber, and the second drive motor (24) is installed on the outside of the extrusion housing (21); the second drive motor (24) can drive the extrusion screw (22) to rotate circumferentially.

3. The catalyst carrier forming equipment according to claim 2, characterized in that: The length of the extrusion screw (22) is 7-9 times its own diameter; and / or Along the direction from the second driving motor (24) to the forming component (23), the pitch of the extrusion screw (22) gradually decreases, and the pitch of the extrusion screw (22) is between 25 mm and 35 mm.

4. The catalyst carrier forming equipment according to any one of claims 2 to 3, characterized in that: The catalyst carrier molding equipment further comprises a vacuum pumping device, wherein the vacuum pumping device is connected to the extrusion chamber; and / or The vacuum degree of the extrusion chamber is between -0.03MPa and -0.04MPa.

5. The catalyst carrier forming equipment according to any one of claims 2 to 3, characterized in that: The catalyst carrier molding equipment also includes a cooling device, and a second jacket is provided on the outer side of the extrusion shell (21); the cooling device is connected to the inside of the second jacket so that a coolant with a temperature range of 0°C-10°C provided by the cooling device can circulate between the second jacket and the cooling device.

6. The catalyst carrier forming equipment according to claim 3, characterized in that: The conveying mechanism comprises a conveying screw (12) and a first drive motor (13); the conveying screw (12) is installed in the conveying chamber, the length direction of the conveying screw (12) is consistent with the length direction of the conveying chamber, and the first drive motor (13) is installed on the outside of the conveyor housing (11); the first drive motor (13) can drive the conveying screw (12) to rotate circumferentially.

7. The catalyst carrier forming equipment according to claim 6, characterized in that: The length of the conveying screw (12) is 1-1.2 times the length of the extrusion screw (22), the diameter of the conveying screw (12) is consistent with the diameter of the extrusion screw (22), and the pitch of the conveying screw (12) is between 30 mm and 35 mm.

8. The catalyst carrier molding equipment according to claim 6, characterized in that: The conveying device (1) further comprises a feed hopper (14) connected to the first feed inlet, the first feed inlet is opened upward, and the feed hopper (14) is located above the first feed inlet; Preferably, an anti-clogging device (15) is provided between the first feed port and the feed hopper (14) for preventing the catalyst carrier raw material from being blocked at the first feed port; More preferably, the anti-clogging device (15) includes a connecting cylinder (151), a third drive motor and two meshing screws (152); the top opening and the bottom opening of the connecting cylinder (151) are respectively connected to the feed hopper (14) and the first feed port, the two meshing screws (152) meshing with each other are horizontally installed in the connecting cylinder (151), and the third drive motor is installed on the outside of the connecting cylinder (151), and the third drive motor can drive the two meshing screws (152) to rotate circumferentially so that the catalyst carrier raw material falls along the position between the two meshing screws (152).

9. The catalyst carrier forming equipment according to claim 6, characterized in that: The catalyst carrier molding equipment also includes a cooling device, and a first jacket is provided on the outer side of the conveyor shell (11); the cooling device is connected to the inside of the first jacket so that a coolant with a temperature range of 0°C-10°C provided by the cooling device can circulate between the first jacket and the cooling device.

10. The catalyst carrier forming equipment according to any one of claims 1 to 3, characterized in that: The extrusion chamber is connected to the conveying chamber through a conveying pipe, in which a distribution plate is sealed and installed, and a plurality of through holes are arranged on the distribution plate, and the through holes are cylindrical holes or conical holes whose diameters gradually decrease along the conveying direction of the catalyst carrier raw material.

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