Special-shaped catalyst carrier forming die and special-shaped catalyst carrier forming device

Abstract

The utility model relates to the technical field of catalyst carrier forming, in particular to a special-shaped catalyst carrier forming die and a special-shaped catalyst carrier forming device. The special-shaped catalyst carrier forming die comprises a first die and a second die, a mounting groove is formed in the top of the first die, a plurality of forming holes distributed at intervals are formed in the bottom of the first die, and protruding blocks are arranged on the lower middle portions of the hole walls of the forming holes; the mounting frame is mounted in the mounting groove; a plurality of feeding holes which are distributed at intervals and communicate with the forming holes are formed in the mounting frame, a plurality of forming needles extending in the axial direction of the forming holes are mounted on the mounting frame at intervals, the forming needles penetrate through the forming holes in a one-to-one correspondence mode, and the forming needles extend out of the corresponding forming holes; and the forming needles are spaced from the bumps in the corresponding forming holes along the radial direction. The special-shaped catalyst carrier forming die disclosed by the utility model can be used for producing a special-shaped catalyst carrier which is relatively complex in structure and relatively large in exposed surface.

Description

Technical Field

[0001] The utility model relates to the technical field of catalyst carrier molding, in particular to a special-shaped catalyst carrier molding die and a special-shaped catalyst carrier molding device. Background Art

[0002] A catalyst carrier is a solid material used to support the active substance. Once loaded, the active substance prevents it from being lost in the oil. When catalysis is required, a certain amount of the catalyst carrier, loaded with the active substance, is stacked on the reactor bed. The gaps within the catalyst carrier stack allow the oil to flow through these gaps and fully contact the active substance within the catalyst carrier, allowing the oil to fully react.

[0003] During the catalytic process, the oil is mainly in contact with the exposed surface of the catalyst carrier, so the larger the exposed surface of the catalyst carrier, the faster the oil reaction rate. At present, the sizes of catalyst carriers are basically the same, so the shape and structure of the catalyst carrier determines the size of the exposed surface of the catalyst carrier, so the shape and structure of the catalyst carrier will have a greater impact on the reaction rate of the oil. However, the current catalyst carrier molding mold can only produce catalyst carriers with simple shapes and structures, such as cylindrical or rectangular catalyst carriers. The exposed surface of catalyst carriers with simple shapes and structures is relatively small and cannot meet the needs of further improving the reaction rate of the oil. Therefore, in order to further improve the reaction rate of the oil, it is extremely necessary to design a mold that can produce special-shaped catalyst carriers with relatively large exposed surfaces. Utility Model Content

[0004] The purpose of the utility model is to overcome the problem in the prior art that the existing catalyst carrier forming mold can only produce catalyst carriers with relatively small exposed surfaces.

[0005] In order to achieve the above-mentioned purpose, the utility model provides, on the one hand, a special-shaped catalyst carrier forming mold, which includes: a first mold, a mounting groove is provided on the top of the first mold, a plurality of spaced forming holes are provided on the bottom of the first mold, the forming holes are connected to the mounting groove, and a protrusion is provided in the middle and lower part of the hole wall of the forming hole; and a mounting frame, the mounting frame is installed in the mounting groove, and the bottom surface of the mounting frame is spaced apart from the bottom wall of the mounting groove; the mounting frame is provided with a plurality of feed holes that are spaced apart and connected to the forming holes, and a plurality of forming needles extending axially along the forming holes are installed on the mounting frame at intervals, and the plurality of forming needles are correspondingly inserted into the plurality of forming holes, and the forming needles extend from the corresponding forming holes, and the forming needles are radially spaced apart from the protrusions in the corresponding forming holes.

[0006] In some embodiments, an annular support platform is provided on the bottom surface of the mounting groove, the support platform surrounds all the forming holes, the mounting frame is installed on the top surface of the support platform, the outer side surface of the mounting frame is in contact with the side wall of the mounting groove, and the bottom surface of the mounting frame is flush with the top surface of the first mold.

[0007] In some embodiments, the formed hole includes a first hole segment and a second hole segment, the first hole segment is located between the mounting slot and the second hole segment, the top of the first hole segment is connected to the mounting slot, the bottom of the first hole segment is connected to the top of the second hole segment, the diameter of the first hole segment gradually decreases from top to bottom, and the angle between the hole wall of the first hole segment and the axis of the first hole segment ranges from 35° to 60°; the diameter of the second hole segment is equal to the minimum diameter of the first hole segment, the protrusion is connected to the side wall of the second hole segment, and the length of the protrusion is equal to the length of the second hole segment.

[0008] In some embodiments, there are multiple protrusions, which are distributed at intervals along the circumference of the second hole segment, and the radial width of the protrusion in the second hole segment is smaller than the radius of the second hole segment, and the side of the protrusion transitions to the hole wall of the second hole segment through an arc surface.

[0009] In some embodiments, the mounting frame includes an annular mounting ring and a mounting net. The mounting ring is mounted on the top surface of the support platform, the mounting net is arranged on the inner side of the mounting ring and fixedly connected to the radial inner portion of the mounting ring, the feed hole is arranged on the mounting net, the forming needle is fixedly mounted on the mounting net, and the bottom surface of the mounting net is separated from the bottom wall of the mounting groove.

[0010] In some embodiments, the mounting net includes a plurality of parallel and spaced-apart first mounting rods and a plurality of parallel and spaced-apart second mounting rods, both ends of the first mounting rod and both ends of the second mounting rod are respectively connected to the radial inner side of the mounting ring, the extension direction of the first mounting rod is perpendicular to the extension direction of the second mounting rod, and a forming needle is installed at the intersection of each first mounting rod and the second mounting rod; the width of the first mounting rod and the width of the second mounting rod are less than the minimum diameter of the first hole section.

[0011] In some embodiments, the distance between two adjacent first mounting rods is greater than the maximum diameter of the first hole segment, and the distance between two adjacent second mounting rods is greater than the maximum diameter of the first hole segment.

[0012] In some embodiments, the forming needle includes a connecting portion and a forming portion that are interconnected, the connecting portion is arranged at the intersection of the first mounting rod and the second mounting rod, the forming portion is arranged in the forming hole, the forming portion extends from the forming hole, and the diameter of the connecting portion is larger than the diameter of the forming portion.

[0013] In some embodiments, the special-shaped catalyst carrier forming mold further includes a second mold, the second mold is provided with a positioning hole extending through, the first mold is detachably installed in the positioning hole, and the axis of the forming hole is parallel to the axis of the positioning hole.

[0014] The utility model also provides a special-shaped catalyst carrier forming device, which includes a catalyst carrier extruder and the special-shaped catalyst carrier forming mold of the above embodiment, and the special-shaped catalyst carrier forming mold is installed at the catalyst carrier outlet of the catalyst carrier extruder.

[0015] The above technical solution of the utility model has the following beneficial effects:

[0016] The catalyst carrier extruder can squeeze the catalyst carrier raw material from the feed hole of the mounting frame into the mounting groove, and the catalyst carrier raw material in the mounting groove will be further squeezed into the forming hole. Since a protrusion is provided in the middle and lower part of the hole wall of the forming hole, and the forming needle is inserted into the forming hole, the special-shaped catalyst carrier extruded from the forming hole can form a groove located at its outer periphery and a channel located in its middle. And the groove wall of the groove is connected to the peripheral wall of the special-shaped catalyst carrier, and the hole wall of the channel is connected to the outside, so the groove wall of the groove and the hole wall of the channel are both exposed surfaces of the special-shaped catalyst carrier, so the special-shaped catalyst carrier has a relatively large exposed surface. Therefore, the special-shaped catalyst carrier forming mold of the present invention can produce special-shaped catalyst carriers with relatively complex shapes and structures and relatively large exposed surfaces, which helps to meet the demand for further improving the reaction rate of the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic cross-sectional view of a molding die for a special-shaped catalyst carrier in one embodiment of the present invention;

[0018] Figure 2 It is a cross-sectional schematic diagram of the first mold in one embodiment of the present utility model;

[0019] Figure 3 This is a schematic top view of the first mold in one embodiment of the present utility model;

[0020] Figure 4 It is a cross-sectional schematic diagram of a mounting frame in one embodiment of the present utility model;

[0021] Figure 5 This is a schematic top view of a mounting frame in one embodiment of the present utility model;

[0022] Figure 6 It is a cross-sectional schematic diagram of a molding die for a special-shaped catalyst carrier in another embodiment of the present invention;

[0023] Figure 7 This is a schematic top view of the second mold in one embodiment of the present utility model;

[0024] Figure 8 It is a schematic cross-sectional view of a special-shaped catalyst carrier in one embodiment of the present utility model.

[0025] Description of Reference Numerals

[0026] 1. First mold; 11. Mounting groove; 12. Forming hole; 121. First hole section; 122. Second hole section; 123. Bump; 13. Support platform;

[0027] 2. Mounting frame; 21. Feed hole; 22. Forming needle; 221. Connecting portion; 222. Forming portion; 23. Mounting ring; 24. Mounting net; 241. First mounting rod; 242. Second mounting rod;

[0028] 3. Second mold; 31. Positioning hole; 32. Card slot;

[0029] 4. Special-shaped catalyst carrier; 41. Groove; 42. Pore. DETAILED DESCRIPTION

[0030] 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 more clear, 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 and not 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 merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.

[0031] like Figures 1 to 5 As shown and Figure 8 As shown, the utility model provides a special-shaped catalyst carrier forming mold, which includes a first mold 1 and a mounting frame 2. The top of the first mold 1 is provided with a mounting groove 11, and the bottom of the first mold 1 is provided with a plurality of spaced forming holes 12, which are connected to the mounting groove 11, and a protrusion 123 is provided in the middle and lower part of the hole wall of the forming hole 12. The mounting frame 2 is installed in the mounting groove 11, and the bottom surface of the mounting frame 2 is spaced apart from the bottom wall of the mounting groove 11; the mounting frame 2 is provided with a plurality of spaced feeding holes 21 that are connected to the forming holes 12, and the mounting frame 2 is provided with a plurality of forming needles 22 extending along the axial direction of the forming holes 12 at intervals. The plurality of forming needles 22 are correspondingly inserted into the plurality of forming holes 12, and the forming needles 22 extend from the corresponding forming holes 12, and the forming needles 22 are radially spaced apart from the protrusions 123 in the corresponding forming holes 12.

[0032] Specifically, the catalyst carrier extruder can squeeze the catalyst carrier raw material from the feed hole 21 of the mounting frame 2 into the mounting groove 11, and the catalyst carrier raw material in the mounting groove 11 will be further squeezed into the forming hole 12. Since the middle and lower parts of the hole wall of the forming hole 12 are provided with a protrusion 123, and the forming needle 22 is inserted into the forming hole 12, the shaped catalyst carrier 4 extruded from the forming hole 12 can form a groove 41 located at its outer periphery and a channel 42 located in its middle. Moreover, the groove wall of the groove 41 is connected to the peripheral wall of the shaped catalyst carrier 4, and the hole wall of the channel 42 is connected to the outside, so the groove wall of the groove 41 and the hole wall of the channel 42 are both exposed surfaces of the shaped catalyst carrier 4, so the shaped catalyst carrier 4 has a relatively large exposed surface. Therefore, the shaped catalyst carrier forming mold of the present invention can produce shaped catalyst carriers with relatively complex shapes and structures and relatively large exposed surfaces, which helps to meet the demand for further improving the reaction rate of the oil.

[0033] like Figures 1 to 2 As shown, in some embodiments of the present invention, an annular support platform 13 is provided on the bottom surface of the mounting groove 11, the support platform 13 surrounds all the forming holes 12, the mounting frame 2 is installed on the top surface of the support platform 13, the outer side surface of the mounting frame 2 is in contact with the side wall of the mounting groove 11, and the bottom surface of the mounting frame 2 is flush with the top surface of the first mold 1.

[0034] Specifically, the bottom of the support platform 13 is connected to the bottom wall of the mounting groove 11, and the side of the support platform 13 is connected to the side wall of the mounting groove 11. The outer diameter of the support platform 13 is the same as the diameter of the mounting groove 11. The support platform 13 surrounds the distribution area of ​​the molding holes 12, and the height of the support platform 13 is less than the depth of the mounting groove 11. The sum of the height of the support platform 13 and the height of the mounting frame 2 is equal to the depth of the mounting groove 11. Therefore, after the mounting frame 2 is installed on the support platform 13, the top surface of the mounting frame 2 is flush with the top surface of the first mold 1. The mounting frame 2 can be installed in the mounting groove 11 by an interference fit, or it can be bolted to the support platform 13. The present invention does not limit the installation and fixing method of the mounting frame 2. Preferably, the support platform 13 and the first mold 1 are integrally formed. Preferably, the diameter of the upper portion of the mounting frame 2 is larger than the diameter of the lower portion, so that the outer portion of the mounting frame 2 forms a stepped structure, thereby better adapting to the mounting groove 11.

[0035] In this embodiment, the support platform 13 can support the mounting frame 2 to a certain height, so that a storage space is formed between the mounting frame 2 and the bottom wall of the mounting groove 11. The catalyst carrier raw material can enter the storage space through the feed hole 21 of the mounting frame 2, and then enter the various forming holes 12 from the storage space, so that the catalyst carrier raw material can be evenly distributed to the various forming holes 12.

[0036] like Figures 1 to 2 As shown, in some embodiments of the present invention, the forming hole 12 includes a first hole segment 121 and a second hole segment 122, the first hole segment 121 is located between the mounting groove 11 and the second hole segment 122, the top of the first hole segment 121 is connected to the mounting groove 11, and the bottom of the first hole segment 121 is connected to the top of the second hole segment 122, the diameter of the first hole segment 121 gradually decreases from top to bottom, and the angle between the hole wall of the first hole segment 121 and the axis of the first hole segment 121 ranges from 35° to 60°; the diameter of the second hole segment 122 is equal to the minimum diameter of the first hole segment 121, the protrusion 123 is connected to the side wall of the second hole segment 122, and the length of the protrusion 123 is equal to the length of the second hole segment 122.

[0037] Specifically, the first hole segment 121 and the second hole segment 122 are interconnected and extend linearly along the thickness direction of the first mold 1. Of course, the connection position between the second hole segment 121 and the second hole segment 122 can be smoothly transitioned to facilitate the movement of the catalyst carrier raw material. The inlet of the first hole segment 121 is located at the bottom wall of the mounting groove 11, and the outlet of the second hole segment 122 is located at the bottom surface of the first mold 1. Furthermore, the axial length of the first hole segment 121 is less than the axial length of the second hole segment 122. For example, the axial length of the second hole segment 122 can be twice the axial length of the first hole segment 121.

[0038] In addition, the first hole section 121 is configured as a tapered hole, which can guide the catalyst carrier raw material from the mounting groove 11 into the second hole section 122. However, if the inclination angle of the hole wall of the first hole section 121 is too small, the catalyst carrier raw material is not easily extruded; if the inclination angle of the hole wall of the first hole section 121 is too large, the movement speed of the catalyst carrier raw material is fast, the extrusion pressure of the catalyst carrier raw material is low, and the extruded strip is not compact enough. Therefore, the angle between the hole wall of the first hole section 121 and the axis of the first hole section 121 is set in the range of 35° to 60°, so that the catalyst carrier raw material can be extruded from the second hole section 122 at an appropriate speed and form a compact extruded strip. Moreover, the protrusion 123 is provided in the second hole section 122, which can form the special-shaped catalyst carrier 4 into a special-shaped structure with a relatively large exposed surface.

[0039] like Figure 3 As shown, in some embodiments of the present invention, there are multiple protrusions 123, and the multiple protrusions 123 are distributed at intervals along the circumference of the second hole segment 122, and the radial width of the protrusion 123 in the second hole segment 122 is smaller than the radius of the second hole segment 122, and the side surface of the protrusion 123 transitions to the hole wall of the second hole segment 122 through an arc surface.

[0040] Specifically, a plurality of protrusions 123 are arranged at intervals in the second hole section 122, which can form the catalyst carrier into a special-shaped structure with a relatively large exposed surface. Figure 8 For example, after molding, the outer side of the irregularly shaped catalyst carrier 4 has multiple circumferentially spaced grooves 41, and the groove sidewalls of the grooves 41 smoothly transition with the peripheral wall of the irregularly shaped catalyst carrier 4. Obviously, compared with traditional catalyst carriers, the irregularly shaped catalyst carrier 4 produced by this irregularly shaped catalyst carrier molding mold has a larger exposed surface.

[0041] like Figures 4 and 5 As shown, in some embodiments of the present invention, the mounting frame 2 includes an annular mounting ring 23 and a mounting net 24. The mounting ring 23 is installed on the top surface of the support platform 13. The mounting net 24 is arranged on the inner side of the mounting ring 23 and is fixedly connected to the radial inner side of the mounting ring 23. The feed hole 21 is arranged on the mounting net 24. The forming needle 22 is fixedly installed on the mounting net 24. The bottom surface of the mounting net 24 is spaced apart from the bottom wall of the mounting groove 11.

[0042] Specifically, the mounting groove 11 is a cylindrical groove, and the mounting ring 23 is set to a ring shape so that the mounting ring 23 can adapt to the shape of the mounting groove 11, the bottom surface of the mounting ring 23 fits with the top surface of the support platform 13, and the outer surface of the mounting ring 23 fits with the groove side wall of the mounting groove 11. The mounting ring 23 is distributed around the mounting net 24; in other words, the mounting net 24 is located on the inner side of the mounting ring 23. The mounting ring 23 and the mounting net 24 can be formed as one piece. A plurality of larger feed holes 21 are provided on the mounting net 24, so the mounting net 24 will not block the catalyst carrier raw material from flowing to the forming hole 12, and the mounting net 24 can also fix the forming needle 22, so that the forming needle 22 is firmly fixed at the preset position.

[0043] like Figure 5 As shown, in some embodiments of the present invention, the mounting net 24 includes a plurality of parallel and spaced first mounting rods 241 and a plurality of parallel and spaced second mounting rods 242, both ends of the first mounting rod 241 and both ends of the second mounting rod 242 are respectively connected to the radial inner side of the mounting ring 23, the extension direction of the first mounting rod 241 is perpendicular to the extension direction of the second mounting rod 242, and a forming needle 22 is installed at the intersection of each first mounting rod 241 and the second mounting rod 242; the width of the first mounting rod 241 and the width of the second mounting rod 242 are less than the minimum diameter of the first hole section 121.

[0044] Specifically, these first mounting rods 241 and second mounting rods 242 crisscross to form a plurality of grids, which serve as feed holes 21. The dense distribution of feed holes 21 facilitates the flow of catalyst carrier material into forming holes 12. Preferably, the width of the first mounting rods 241 and the width of the second mounting rods 242 are 1.1-1.3 times the diameter of the forming needles 22, to make the feed holes 21 as large as possible.

[0045] like Figure 5 As shown, in some embodiments of the present invention, the distance between two adjacent first mounting rods 241 is greater than the maximum diameter of the first hole section 121 , and the distance between two adjacent second mounting rods 242 is greater than the maximum diameter of the first hole section 121 .

[0046] Specifically, the above arrangement can minimize the number of first mounting rods 241 and second mounting rods 242, thereby reducing manufacturing costs; and can maximize the size of feed hole 21, thereby facilitating the flow of catalyst carrier raw material. Preferably, first mounting rod 241 and second mounting rod 242 are rectangular parallelepiped rods.

[0047] like Figure 4 As shown, in some embodiments of the present invention, the molding needle 22 includes a connecting portion 221 and a molding portion 222 that are interconnected, the connecting portion 221 is arranged at the intersection of the first mounting rod 241 and the second mounting rod 242, the molding portion 222 is arranged in the molding hole 12, the molding portion 222 extends from the molding hole 12, and the diameter of the connecting portion 221 is greater than the diameter of the molding portion 222.

[0048] Specifically, a perforation is provided at the intersection of the first mounting rod 241 and the second mounting rod 242, and the connecting portion 221 of the molding needle 22 is provided in the perforation, and the connecting portion 221 can be connected to the perforation in an interference fit manner to fix the molding needle 22 in a preset position. And because the diameter of the connecting portion 221 is relatively large, the molding needle 22 is not easy to shake in the perforation, so the position of the molding needle 22 is more stable. The molding portion 222 is used to mold the channel of the catalyst carrier. Preferably, the width of the first mounting rod 241 and the width of the second mounting rod 242 are 1.1-1.3 times the diameter of the connecting portion 221, and the diameter of the connecting portion 221 is 1.1-1.3 times the diameter of the molding portion 222. Preferably, the molding portion 222 and the connecting portion 221 are integrally molded.

[0049] like Figures 6 and 7 As shown, in some embodiments of the present invention, the special-shaped catalyst carrier forming mold also includes a second mold 3, the second mold 3 is provided with a positioning hole 31 extending through, the first mold 1 is detachably installed in the positioning hole 31, and the axis of the forming hole 12 is parallel to the axis of the positioning hole 31.

[0050] Specifically, the second mold 3 is configured to be cylindrical, and a positioning hole 31 extending along its axis is provided in the second mold 3. The first mold 1 is also configured to be cylindrical, and the first mold 1 can be fixedly installed in the positioning hole 31. And the axis of the first mold 1 coincides with the axis of the second mold 3. The outer side of the second mold 3 is provided with a plurality of slots 32, and these slots 32 are along the circumferentially spaced portion of the second mold 3. The second mold 3 can be clamped at the catalyst carrier outlet of the catalyst carrier extruder through the slots 32. Preferably, the diameter of the upper part of the first mold 1 is larger than the diameter of the lower part thereof, so that the outer side of the first mold 1 is formed into a stepped structure; accordingly, the positioning hole 31 is configured as a stepped hole to facilitate adaptation to the first mold 1.

[0051] Of course, the first die 1 can also be installed at the catalyst carrier outlet of the catalyst carrier extruder in other forms, and the present invention does not impose any limitation thereto.

[0052] The utility model also provides a special-shaped catalyst carrier forming device, which includes a catalyst carrier extruder and the special-shaped catalyst carrier forming mold of the above embodiment, and the special-shaped catalyst carrier forming mold is installed at the catalyst carrier outlet of the catalyst carrier extruder.

[0053] Specifically, the catalyst carrier raw material extruded by the catalyst carrier extruder flows along the feed hole 21, the mounting groove 11, and the forming hole 12, ultimately forming a special-shaped catalyst carrier 4 with a large exposed surface. In this embodiment, the special-shaped catalyst carrier forming device adopts the above-mentioned special-shaped catalyst carrier forming mold, so the above-mentioned technical effects can also be achieved.

[0054] 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 scope of protection of the present invention.

Claims

1. A special-shaped catalyst carrier forming mold, characterized in that: include: A first mold (1), wherein a mounting groove (11) is provided on the top of the first mold (1), a plurality of spaced-apart forming holes (12) are provided on the bottom of the first mold (1), the forming holes (12) are communicated with the mounting groove (11), and a protrusion (123) is provided at the middle and lower part of the hole wall of the forming hole (12); and A mounting frame (2), wherein the mounting frame (2) is mounted in the mounting groove (11), and the bottom surface of the mounting frame (2) is spaced apart from the bottom wall of the mounting groove (11); the mounting frame (2) is provided with a plurality of feed holes (21) that are spaced apart and communicated with the forming hole (12); the mounting frame (2) is spaced apart and provided with a plurality of forming needles (22) extending axially along the forming hole (12); the plurality of forming needles (22) are correspondingly inserted into the plurality of forming holes (12), the forming needles (22) extend from the corresponding forming holes (12), and the forming needles (22) are spaced apart radially from the protrusions (123) in the corresponding forming holes (12).

2. The special-shaped catalyst carrier forming mold according to claim 1, characterized in that: An annular support platform (13) is provided on the bottom surface of the mounting groove (11), and the support platform (13) surrounds all the forming holes (12). The mounting frame (2) is mounted on the top surface of the support platform (13), and the outer side surface of the mounting frame (2) is in contact with the groove side wall of the mounting groove (11), and the bottom surface of the mounting frame (2) is flush with the top surface of the first mold (1).

3. The special-shaped catalyst carrier forming mold according to claim 2, characterized in that: The forming hole (12) comprises a first hole section (121) and a second hole section (122), the first hole section (121) is located between the mounting groove (11) and the second hole section (122), the top of the first hole section (121) is connected to the mounting groove (11), and the bottom of the first hole section (121) is connected to the top of the second hole section (122), the diameter of the first hole section (121) gradually decreases from top to bottom, and the angle between the hole wall of the first hole section (121) and the axis of the first hole section (121) ranges from 35° to 60°; the diameter of the second hole section (122) is equal to the minimum diameter of the first hole section (121), the protrusion (123) is connected to the side wall of the second hole section (122), and the length of the protrusion (123) is equal to the length of the second hole section (122).

4. The special-shaped catalyst carrier forming mold according to claim 3, characterized in that: There are multiple protrusions (123), and the multiple protrusions (123) are distributed at intervals along the circumference of the second hole segment (122). The radial width of the protrusion (123) in the second hole segment (122) is smaller than the radius of the second hole segment (122), and the side surface of the protrusion (123) transitions to the hole wall of the second hole segment (122) through an arc surface.

5. The special-shaped catalyst carrier forming die according to claim 3, characterized in that: The mounting frame (2) includes an annular mounting ring (23) and a mounting net (24), wherein the mounting ring (23) is mounted on the top surface of the support platform (13), the mounting net (24) is arranged on the inner side of the mounting ring (23) and is fixedly connected to the radial inner side of the mounting ring (23), the feed hole (21) is arranged on the mounting net (24), the forming needle (22) is fixedly mounted on the mounting net (24), and the bottom surface of the mounting net (24) is spaced apart from the bottom wall of the mounting groove (11).

6. The special-shaped catalyst carrier forming die according to claim 5, characterized in that: The mounting net (24) comprises a plurality of parallel and spaced first mounting rods (241) and a plurality of parallel and spaced second mounting rods (242), the two ends of the first mounting rod (241) and the two ends of the second mounting rod (242) being respectively connected to the radial inner side of the mounting ring (23), the extension direction of the first mounting rod (241) and the extension direction of the second mounting rod (242) being perpendicular, and a forming needle (22) being installed at the intersection of each first mounting rod (241) and the second mounting rod (242); the width of the first mounting rod (241) and the width of the second mounting rod (242) being smaller than the minimum diameter of the first hole section (121).

7. The special-shaped catalyst carrier forming die according to claim 6, characterized in that: The distance between two adjacent first mounting rods (241) is greater than the maximum diameter of the first hole section (121), and the distance between two adjacent second mounting rods (242) is greater than the maximum diameter of the first hole section (121).

8. The special-shaped catalyst carrier forming die according to claim 6, characterized in that: The molding needle (22) comprises a connecting portion (221) and a molding portion (222) connected to each other, wherein the connecting portion (221) is arranged at a position where the first mounting rod (241) and the second mounting rod (242) intersect, and the molding portion (222) is arranged in the molding hole (12). The molding portion (222) extends from the molding hole (12), and the diameter of the connecting portion (221) is greater than the diameter of the molding portion (222).

9. The special-shaped catalyst carrier forming die according to claim 1, characterized in that: The special-shaped catalyst carrier forming mold further comprises a second mold (3), wherein the second mold (3) is provided with a positioning hole (31) extending therethrough, the first mold (1) is detachably mounted in the positioning hole (31), and the axis of the forming hole (12) is parallel to the axis of the positioning hole (31).

10. A device for forming a special-shaped catalyst carrier, characterized in that: The invention comprises a catalyst carrier extruder and a special-shaped catalyst carrier forming die according to any one of claims 1 to 9, wherein the special-shaped catalyst carrier forming die is installed at the catalyst carrier outlet of the catalyst carrier extruder.

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