Catalyst pellet cutting mechanism

Abstract

The present application relates to the technical field of catalyst, in particular to a kind of catalyst cutting mechanism, including workbench, die head, butt joint die tube and cutting mechanism.In the present application, first of all, support fulcrum is formed on the left and right sides of the part to be cut of catalyst by die head and butt joint die tube, the influence of catalyst's own gravity is reduced, and it is ensured that cutting knife cuts with vertical knife edge, so that the cut is straight, secondly, by cleaning brush and discharge assembly, the material adhered to the cutting knife is cleaned, abrasive assembly is polished, so that the area of cutting knife that has not been cut is maintained good cutting ability, and by the working mode that knife rest moves forward and backward, the part of cutting knife that has been cleaned and polished can be replaced to cutting area to cut, in summary, the problem that catalyst particle end face is uneven or torn due to material adhered to cutting knife is avoided, the cutting effect of cutting knife is maintained, and it is ensured that the cutting effect of catalyst meets the demand.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of catalysts, in particular to a catalyst cutting mechanism. BACKGROUND

[0002] A catalyst is a substance capable of changing the rate of a chemical reaction without itself undergoing any chemical change in mass and chemical properties before and after the reaction, is a cornerstone of modern chemical industry, and about 90% of chemical processes rely on catalysts. In order to reduce the bed pressure drop, improve the mechanical strength, optimize the mass and heat transfer performance, and facilitate loading and unloading and operation, etc., some catalysts need to be cut into particles during production and processing, so that the catalysts are formed into particles with specific size and shape (such as cylindrical, three-leaf clover, four-leaf clover).

[0003] In the existing operation process, the mixed material is extruded into a columnar strip through an extruder, and a rotating cutter continuously rotates at the discharge port to cut the catalyst strip, that is, the rotating cutter continuously cuts the catalyst while the catalyst is continuously extruded.

[0004] In the existing cutting operation process, the following problems exist: the two sides of the catalyst cutting position are not supported, so the part of the catalyst to be cut is placed in suspension, and under the action of gravity, the part of the catalyst naturally falls, and in addition, the rotating cutter also exerts a downward shearing force on the catalyst during cutting, which deforms the catalyst, and finally causes problems such as uneven end face of the catalyst particles, bending of the catalyst particles, tearing or formation of a horseshoe-shaped end face.

[0005] In addition, the rotating cutter itself has certain wear during long-term cutting operation, and the rotating cutter is also attached with sticky material generated during cutting, which affects the slitting performance of the rotating cutter during cutting, that is, it also causes problems such as uneven end face of the catalyst particles, bending of the catalyst particles, tearing or formation of a horseshoe-shaped end face. SUMMARY

[0006] Therefore, it is necessary to provide a catalyst cutting mechanism to solve the above problems of the prior art.

[0007] The application provides a catalyst cutting mechanism, which comprises an operation table, an extrusion assembly is arranged on the upper end face of the operation table, a die head is arranged on the left side of the extrusion assembly, a moving frame is slidably arranged on the operation table, and a butt joint die pipe is arranged on the moving frame.

[0008] A slitting mechanism is arranged on the operation table, and the slitting mechanism comprises a cutter holder, the cutter holder is slidably arranged on the operation table, and a cutting knife is rotatably arranged on the cutter holder.

[0009] The die head and the docking die tube are jointly provided with a cleaning unit for cleaning the cutting blade. The cleaning unit includes a cleaning brush and a material discharge assembly. The cleaning brush cleans the rotating cutting blade and the material discharge assembly cleans and discharges the sticky material. The cleaning unit also includes a grinding assembly, which polishes the cleaned cutting blade.

[0010] The docking mold tube is equipped with a discharge unit for limiting the cutting length and assisting in material feeding.

[0011] The die head and the docking die tube together form a support structure on the left and right sides, forming support points on the left and right sides of the area to be cut. The cleaning brush in the cleaning unit cleans the non-cutting area on the cutting blade. The material discharge component collects the sticky material and the abrasive component grinds the area on the cutting blade. This process forms a combination of two-sided support, cutting blade cleaning, and changing the actual cutting position of the cutting blade for pelletizing.

[0012] According to an advantageous embodiment, the discharge unit includes a fixed frame, a fixed frame is fixedly installed on the front side of the docking mold tube, and two sliding frames are slidably installed on the fixed frame via a fixed column with a vertical axis. The opposite surfaces of the two sliding frames are rotatably provided with rotating wheels with axes extending forward and backward via a U-shaped frame.

[0013] The docking mold tube has a working groove corresponding to the rotating wheel.

[0014] According to an advantageous embodiment, two symmetrically spaced rings are fixedly sleeved on the fixed column, and two sliding frames are located between the two spaced rings.

[0015] When the sliding frame is in contact with the corresponding spacer ring, the distance between the two rotating wheels is the same as the catalyst diameter. When the U-shaped frame is in contact with the mating mold tube, the distance between the two rotating wheels is less than the catalyst diameter.

[0016] According to an advantageous embodiment, a frustum-shaped discharge cylinder with a smaller right side and a larger left side is fixedly provided on the left end face of the docking mold tube. Multiple circumferentially distributed air holes are provided on the inclined inner wall of the discharge cylinder, which are inclined from left to right toward the axis of the discharge cylinder. A cavity ring is fixedly sleeved on the outer side of the discharge cylinder, and the air holes are connected to the cavity inside the cavity ring.

[0017] According to an advantageous embodiment, the cleaning unit further includes a mounting bracket, with mounting brackets fixedly provided on both the front and rear sides of the mold head and the docking mold tube.

[0018] The mounting bracket has two screws fixedly installed on both the upper and lower ends, with the screws distributed in front and behind and with the axis vertical. The cleaning brush is movably sleeved on the two adjacent screws on the upper side, and the bristles of the cleaning brush face the adjacent mounting brackets on the left and right sides. The distance between the two cleaning brushes on the left and right sides is greater than the thickness of the cutting blade.

[0019] According to an advantageous embodiment, the discharge assembly includes a collection chamber, which is provided in the mounting frame. The opposing surfaces of two adjacent mounting frames are provided with a plurality of suction holes arranged in a matrix, and the two opposite suction holes are symmetrical and inclined upward from right to left.

[0020] According to an advantageous embodiment, the grinding tool assembly includes mounting blocks, with mounting blocks movably sleeved on two screws on the lower side of the same mounting bracket, and grinding blocks fixedly disposed on the opposite surfaces of two adjacent mounting blocks, the distance between the two opposite grinding blocks being the same as the thickness of the cutting blade.

[0021] According to an advantageous embodiment, a reciprocating threaded rod with its axis extending back and forth is rotatably mounted on the worktable, and the thread of the reciprocating threaded rod passes through the tool holder.

[0022] A docking post with its axis extending forward and backward is fixedly installed on the front side of the tool holder, and a docking sleeve that fits into the docking post is fixedly installed on the rear side of the docking mold tube.

[0023] According to an advantageous embodiment, a guide post with an axis extending from left to right is fixedly installed on the right end face of the fixing frame, and guide blocks are fixedly installed on the front end faces of the two front mounting frames. The left guide block is fixedly sleeved on the guide post, and the right guide block is slidably sleeved on the guide post.

[0024] A fitting ring is fixedly sleeved on the guide post. When the fitting ring fits the right guide block, the distance between the die head and the docking die tube is adapted to the thickness of the cutting blade.

[0025] In summary, the present invention has the following beneficial effects: Firstly, the die head and the docking die tube form support points on the left and right sides of the part to be cut on the catalyst, reducing the influence of the catalyst's own gravity and ensuring that the cutting blade cuts particles with a vertical blade edge, thereby making the cut straight, improving the cutting accuracy, and avoiding problems such as catalyst bending deformation, tearing, or forming a horseshoe-shaped end face due to catalyst being suspended during cutting.

[0026] Secondly, the cleaning brush and discharge assembly clean the material adhering to the cutting blade, and the grinding assembly polishes the cutting blade, ensuring that the areas on the cutting blade that are not being granulated always maintain good cutting ability. By moving the blade holder back and forth, the cleaned and polished parts of the cutting blade can be replaced in the granulation area for granulation. In summary, this avoids the problem of uneven or torn catalyst particle end faces caused by materials adhering to the cutting blade, maintains the granulation effect of the cutting blade, and ensures that the granulation effect of the catalyst meets the requirements. Attached Figure Description

[0027] 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.

[0028] Figure 1 A three-dimensional structural schematic diagram of a catalyst pelletizing mechanism provided according to an embodiment of the present invention is shown.

[0029] Figure 2 A partial front view of a catalyst pelletizing mechanism provided according to an embodiment of the present invention is shown.

[0030] Figure 3 A partial cross-sectional perspective view of the three-dimensional structure between the mold head, the docking mold tube, and the rotating wheel provided according to an embodiment of the present invention is shown.

[0031] Figure 4 A three-dimensional structural diagram of the docking post, guide post, and tool holder provided according to an embodiment of the present invention is shown.

[0032] Figure 5 A front view of the mounting bracket, cleaning brush, and abrasive block provided according to an embodiment of the present invention is shown.

[0033] Figure 6 A partial cross-sectional front view of the mounting bracket, suction hole, and grinding block provided according to an embodiment of the present invention is shown.

[0034] The above-mentioned attached drawings include the following reference numerals: 1. Workbench; 2. Extrusion assembly; 3. Die head; 4. Moving frame; 5. Connecting die tube; 6. Cutting mechanism; 60. Tool holder; 600. Cutting blade; 601. Reciprocating threaded rod; 61. Cleaning unit; 610. Cleaning brush; 611. Mounting frame; 612. Screw; 613. Discharge assembly; 6130. Collection chamber; 6131. ​​Suction hole; 614. Grinding die assembly; 6140. Mounting block; 6141. Grinding block; 62. Discharge unit; 620. Fixed frame; 621. Sliding frame; 622. Rotating wheel; 623. Spacing ring; 624. Discharge cylinder; 625. Air hole; 626. Cavity ring; 63. Connecting post; 630. Connecting sleeve; 631. Guide post; 632. Guide block; 633. Fitting ring. Detailed Implementation

[0035] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] like Figure 1 As shown, a catalyst pelletizing mechanism includes: a worktable 1, an extrusion assembly 2 is provided on the upper surface of the worktable 1, a die head 3 is provided on the left side of the extrusion assembly 2, a movable frame 4 is slidably provided on the worktable 1, the movable frame 4 is driven to move left and right by an external pneumatic push rod (not shown in the figure), and a docking die tube 5 with its axis collinear with the axis of the die head 3 is provided on the movable frame 4, and the opening at the right end of the docking die tube 5 is chamfered.

[0037] like Figure 1 and Figure 2 As shown, a slitting mechanism 6 is provided on the workbench 1. The slitting mechanism 6 includes a blade holder 60. The blade holder 60 is slidably arranged on the workbench 1. A cutting blade 600 is rotatably arranged on the blade holder 60. The inner diameter of the mating mold tube 5 and the mold head 3 are the same and they are opposite each other. The adjacent ends of the mating mold tube 5 and the mold head 3 are all chamfered.

[0038] like Figure 1 , Figure 2 and Figure 5 As shown, the die head 3 and the docking die tube 5 are jointly provided with a cleaning unit 61 for cleaning the cutting blade 600. The cleaning unit 61 includes a cleaning brush 610 and a discharge assembly 613. The cleaning brush 610 cleans the rotating cutting blade 600 and the discharge assembly 613 cleans and discharges the sticky material. The cleaning unit 61 also includes a grinding assembly 614, which polishes the cleaned cutting blade 600.

[0039] like Figure 1 As shown, the docking mold tube 5 is provided with a discharge unit 62 for limiting the cutting length and assisting in material feeding.

[0040] During operation, the position of the docking die tube 5 is first moved to the right. The left end of the catalyst is then manually placed into the docking die tube 5, and the distance between the die head 3 and the docking die tube 5 is adjusted so that the distance is greater than the thickness of the cutting blade 600 to avoid blade collision. Then, the extrusion assembly 2 continues to extrude round catalyst particles. At the same time, the cutting blade 600 is driven to rotate by an external servo motor and continuously cuts the catalyst. In summary, the catalyst pelleting operation is continuously carried out, and the resulting catalyst particles fall out through the left side of the docking die tube 5 and are collected.

[0041] Regarding the working process between the die head 3 and the docking die tube 5, it should be noted that the die head 3 and the docking die tube 5 provide support for the left and right sides of the cutting point. Compared with the traditional cutting method that only provides support at the discharge point, the cutting method in this solution takes the cutting point as the center and, together with the support effect on both sides, provides a fulcrum for the cutting action, making the cut straighter, improving the cutting accuracy, and avoiding problems such as catalyst bending deformation, tearing, or forming a horseshoe-shaped end face due to catalyst being suspended during cutting.

[0042] Regarding the pelletizing process described above, it should be noted that during pelletizing, the blade holder 60 moves back and forth intermittently, changing the cutting area on the cutting blade 600 that is in contact with the catalyst. This prevents the same area from being continuously cut on the same blade 600, which would lead to low utilization and reduced lifespan. Secondly, during continuous pelletizing, the cleaning brush 610 cleans the areas on the cutting blade 600 that were not being cut, and the discharge assembly 613 collects the resulting residue, preventing it from re-adhering to the cutting blade 600 and affecting its normal cutting process. Furthermore, through grinding... The component 614 grinds the areas on the cutting blade 600 that have not been cut, ensuring that the cutting performance of the cutting blade 600 meets the cutting requirements. Therefore, when the cutting blade 600 moves back and forth, the areas on the cutting blade 600 that were previously cut are removed from between the die head 3 and the docking die tube 5, while the cleaned and ground cutting areas on the cutting blade 600 are moved into between the die head 3 and the docking die tube 5 for cutting. This avoids problems such as the cutting effect being affected by the material adhering to the cutting blade 600 and the reduced cutting performance of the cutting blade 600, and avoids uneven particle cuts, horseshoe-shaped cuts, burrs, or trailing. In summary, the cutting effect is improved.

[0043] Secondly, the discharge unit 62 assists in the process of collecting pellets after pelletizing, improving the convenience of collecting pellets. At the same time, it, together with the extrusion component 2, limits the cutting length and improves the pelletizing accuracy.

[0044] like Figure 1 and Figure 3 As shown, the discharge unit 62 includes a fixed frame 620. The fixed frame 620 is fixedly installed on the front side of the docking mold tube 5. Two sliding frames 621 are slidably installed on the fixed frame 620 through a fixed column with a vertical axis. The fixed frame 620 is provided with a high-speed electric push rod for driving the sliding frames 621 to move up and down. The opposite surfaces of the two sliding frames 621 are rotatably provided with rotating wheels 622 with their axes extending back and forth through a U-shaped frame. The rotating wheels 622 are driven to rotate by an external motor (not shown in the figure). The docking mold tube 5 is provided with a working groove corresponding to the rotating wheels 622.

[0045] like Figure 3As shown, two symmetrically spaced rings 623 are fixedly sleeved on the fixed column, and two sliding frames 621 are located between the two spaced rings 623.

[0046] When the sliding frame 621 is in contact with the corresponding spacer ring 623, the distance between the two rotating wheels 622 is the same as the catalyst diameter. When the U-shaped frame is in contact with the mating mold tube 5, the distance between the two rotating wheels 622 is less than the catalyst diameter.

[0047] like Figure 2 and Figure 3 As shown, a frustum-shaped discharge cylinder 624 with a smaller right side and a larger left side is fixedly installed on the left end face of the docking mold tube 5. The inner wall of the discharge cylinder 624 has multiple circumferentially distributed air holes 625 that are obliquely oriented from left to right toward the axis of the discharge cylinder 624. A cavity ring 626 is fixedly sleeved on the outside of the discharge cylinder 624. The air holes 625 are connected to the chambers inside the cavity ring 626. The cavity ring 626 is connected to an external air pump (not shown in the figure).

[0048] During pelleting, as the catalyst is fed from right to left, the two U-shaped frames are in contact with the die tube 5. The distance between the two rotating wheels 622 is less than the catalyst diameter. Therefore, the two rotating wheels 622 prevent the catalyst from continuously moving to the left within the die tube 5, thus limiting the cutting length of the catalyst. During the interval between the single cut of the catalyst by the cutting blade 600 and subsequent cuts, the high-speed electric push rod moves the sliding frame 621. The two sliding frames 621 move away from each other, so that the sliding frame 621 is in contact with the corresponding spacer ring 623. The distance between the two rotating wheels 622 is the same as the catalyst diameter. The rotating wheels 622 are driven to rotate by an external motor. When the sliding frame 621 moves the rotating wheels 622 and the rotating wheels 622 contact the cut pellets, the rotation of the two rotating wheels 622 applies a horizontal leftward frictional force to the pellets, thus causing the pellets to move to the left and be fed. After feeding, the high-speed electric push rod resets, and then the next pelleting operation is performed. The above operation is repeated continuously for pelleting.

[0049] Regarding the aforementioned high-speed electric push rod, extrusion assembly 2, and external motor 1, it should be further explained that all three are controlled by existing control circuits to ensure the accuracy of their coordinated operation and to complete the aforementioned operation process with precision. All three components and the control circuits are existing external technologies, which will not be elaborated further here.

[0050] After pelleting, the pellets enter the discharge cylinder 624 through the docking die tube 5. An external air pump pumps air into the cavity ring 626 and pumps it out through the air hole 625. The air pushes the pellets from right to left through the discharge cylinder 624. Therefore, the catalyst pellets can be collected manually on the left side of the discharge cylinder 624. Compared with the traditional cutting method, where the pellets are splashed by the rotating blade and are difficult to collect directly, the collection method in this technical solution improves the convenience of collecting pellets and enhances its practicality.

[0051] like Figure 1 , Figure 2 and Figure 5 As shown, the cleaning unit 61 also includes a mounting bracket 611. Mounting brackets 611 are fixedly installed on both the front and rear sides of the mold head 3 and the docking mold tube 5. The upper sides of the two adjacent mounting brackets 611 are chamfered.

[0052] like Figure 2 , Figure 5 and Figure 6 As shown, two screws 612, distributed front to back and with vertical axes, are fixedly installed on both the upper and lower end faces of the mounting bracket 611. The cleaning brush 610 is movably sleeved on the two adjacent screws 612 on the upper side, and the bristles of the cleaning brush 610 face the adjacent mounting brackets 611 on the left and right sides. The distance between the two cleaning brushes 610 on the left and right sides is greater than the thickness of the cutting blade 600.

[0053] like Figure 6 As shown, the discharge assembly 613 includes a collection chamber 6130. The collection chamber 6130 is provided in the mounting frame 611. The collection chamber 6130 is connected to an external air pump (not shown in the figure) through a discharge pipe. Multiple suction holes 6131 are arranged in a matrix on the opposite sides of two adjacent mounting frames 611. The two suction holes 6131 on the left and right sides are symmetrical. Taking the suction hole 6131 on the right mounting frame 611 as an example, the suction hole 6131 is inclined upward from right to left. The upper side of the suction hole 6131 is flared.

[0054] like Figure 2 , Figure 5 and Figure 6 As shown, the grinding tool assembly 614 includes a mounting block 6140. The mounting block 6140 is movably sleeved on two screws 612 on the lower side of the same mounting bracket 611. Grinding blocks 6141 are fixedly arranged on the opposite surfaces of two adjacent mounting blocks 6140. The distance between the two opposite grinding blocks 6141 is the same as the thickness of the cutting blade 600.

[0055] Before pelletizing, the cleaning brush 610 is fitted onto the corresponding screw 612, and the cleaning brush 610 is locked in place by the corresponding nut on the screw 612. Therefore, when the cutting blade 600 rotates and cuts, the area on the cutting blade 600 that is not actually being cut passes between the two mounting brackets 611. The cleaning brush 610 cleans the material adhering to the corresponding area on the cutting blade 600. This material, affected by the cutting blade 600, falls from top to bottom along the area between the two mounting brackets 611. The external air pump 2 operates, causing the suction hole 6... 131 adsorbs the sticky material, and the inclined orientation and flared opening of the suction hole 6131 facilitate the free fall of the sticky material into it. Finally, the collection chamber 6130 collects the sticky material, preventing it from re-adhering to the cutting blade 600. In summary, through the above cleaning and material collection process, the cutting blade 600 is cleaned to prevent the material adhering to the cutting blade 600 from becoming less sharp, which could cause unevenness or tearing of the catalyst particle end face. This maintains the cutting effect of the cutting blade 600 and ensures that the particle cutting effect of the catalyst meets the requirements.

[0056] When the cutting blade 600 has been performing pelletizing operations for a long time, simply cleaning the material is no longer sufficient to maintain the cutting requirements of the cutting blade 600. If pelletizing operations continue for a period of time, the output of pellets will not meet the demand. At this point, the machine is stopped, and the grinding block 6141 is manually installed onto the mounting bracket 611. The corresponding grinding block 6141 is locked by the corresponding nut of the mounting screw 612. Therefore, during the subsequent pelletizing operations of the cutting blade 600, the blade holder 60 moves back and forth, so the grinding block 6141 grinds the cutting area on the cutting blade 600 in turn to maintain the sharpness of the cutting blade 600 and ensure that the cutting operation can continue. At the same time, the pelletizing operation is carried out simultaneously during the above grinding process, which improves the operation efficiency while maintaining the pelletizing effect.

[0057] like Figure 4 As shown, a reciprocating threaded rod 601 with its axis extending back and forth is rotatably mounted on the workbench 1. The reciprocating threaded rod 601 is threaded through the tool holder 60 and is connected to an external motor 2 (not shown in the figure).

[0058] like Figure 4 As shown, a docking post 63 with its axis extending forward and backward is fixedly installed on the front side of the tool holder 60, and a docking sleeve 630 that fits into the docking post 63 is fixedly installed on the rear side of the docking mold tube 5.

[0059] like Figure 4 As shown, a guide post 631 with an axis extending from left to right is fixedly installed on the right end face of the fixed frame 620, and guide blocks 632 are fixedly installed on the front end faces of the two front mounting frames 611. The left guide block 632 is fixedly sleeved on the guide post 631, and the right guide block 632 is slidably sleeved on the guide post 631.

[0060] A fitting ring 633 is fixedly sleeved on the guide post 631. When the fitting ring 633 fits the right guide block 632, the distance between the die head 3 and the docking die tube 5 is adapted to the thickness of the cutting blade 600.

[0061] Before the cutting operation, the tool holder 60 is positioned away from the docking mold tube 5, and the docking post 63 is located outside the docking sleeve 630. The position of the docking mold tube 5 is adjusted as follows: the external electric push rod operates, causing the moving frame 4 to move the docking mold tube 5 to the right synchronously. The fixed frame 620 moves the guide post 631 to the right synchronously. The right end of the guide post 631 passes through the right guide block 632, and finally the fitting ring 633 is tightly attached to the right guide block 632. At this time, the distance between the die head 3 and the docking mold tube 5 is adapted to the thickness of the cutting blade 600, the distance between the two grinding blocks 6141 on the left and right is the same as the thickness of the cutting blade 600, and the distance between the two adjacent mounting brackets 611 on the left and right is greater than the thickness of the cutting blade 600. Next, during the above process, the left end of the catalyst is manually placed into the docking mold tube 5.

[0062] Then, the external motor 2 drives the reciprocating threaded rod 601 to rotate. Through the threaded engagement between the reciprocating threaded rod 601 and the tool holder 60, the tool holder 60 moves forward. The tool holder 60 drives the docking post 63 on it to move forward synchronously. Finally, the docking post 63 is engaged in the docking sleeve 630. Through the above-mentioned coordination with the guide post 631 and the right guide block 632, the axis of the docking die tube 5 and the die head 3 are ensured to be collinear. At the same time, the docking die tube 5 is locked, and the whole is locked in an integrated manner, which improves the stability of the extrusion assembly 2 during material discharge and pelletizing operations.

[0063] After completing the above operations, the pelletizing operation is carried out continuously. During the pelletizing operation, the external motor 2 continuously moves left and right, causing the blade holder 60 to move back and forth. However, during the movement, it is ensured that the docking post 63 is always located inside the docking sleeve 630. Through the cooperation between the docking post 63 on the upper side of the blade holder 60 and the docking sleeve 630, the stability of the blade holder 60 during the reciprocating movement is maintained, that is, the stability of the cutting blade 600 when moving to pelletize is indirectly maintained.

[0064] It should be further explained that in the existing technical solution, after the catalyst is extruded, it is directly granulated by a rotating cutter. The sides of the catalyst cutting point are not supported, and the adhering material on the rotating cutter during the cutting process is not cleaned in time. This easily leads to problems such as uneven particle end faces and particle deformation. This technical solution adds a docking die tube 5, a cleaning brush 610, a discharge assembly 613, and a grinding die assembly 614. The docking die tube 5 and the die head 3 form support points on both sides of the cutting position, making the cut straighter, improving cutting accuracy, and avoiding problems such as catalyst bending, tearing, or horseshoe-shaped end faces caused by catalyst being cut while suspended. Secondly, through… The cleaning brush 610 and the discharge assembly 613 clean the material adhering to the cutting blade 600, the grinding assembly 614 grinds the cutting blade 600, and the back-and-forth movement of the blade holder 60 ensures that the area on the cutting blade 600 maintains good cutting ability. By providing two fulcrums and maintaining the cutting ability of the cutting blade 600, problems such as uneven particle end faces and particle deformation caused by cutting are avoided. All of the above components are conventional existing mechanical parts, which can be used for a long time after a single installation. Compared with the long-term benefits brought by the improved pelletizing effect, the cost of adding components is negligible. In summary, this technical solution is a specific improvement made entirely based on the defects of the existing technology and to solve the defects of the technology.

[0065] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0066] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0068] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A catalyst pelletizing mechanism, characterized in that, include: The workbench has an extrusion assembly on its upper surface, a die head on its left side, and a movable frame that slides left and right on the workbench. The movable frame has a docking die tube whose axis is collinear with the axis of the die head. The docking die tube has the same inner diameter as the die head and is opposite to it on the left and right. The worktable is equipped with a slitting mechanism, which includes a blade holder. The blade holder is slidably mounted on the worktable, and a cutting blade is rotatably mounted on the blade holder. During the pelletizing process, the blade holder moves back and forth intermittently, so that the cutting area on the cutting blade that is in contact with the catalyst is replaced. The die head and the docking die tube are jointly provided with a cleaning unit for cleaning the cutting blade. The cleaning unit includes a cleaning brush and a material discharge assembly. The cleaning brush cleans the rotating cutting blade and the material discharge assembly cleans and discharges the sticky material. The cleaning unit also includes a grinding assembly, which polishes the cleaned cutting blade. The docking mold tube is equipped with a discharge unit for limiting the cutting length and assisting in material feeding; The die head and the docking die tube together form a support structure on the left and right sides, forming support points on the left and right sides of the area to be cut. The cleaning brush in the cleaning unit cleans the non-cutting area on the cutting blade. The discharge component collects the sticky material and the abrasive component grinds the area on the cutting blade. This forms a pelletizing operation with the support on both sides, cleaning the cutting blade, and changing the actual cutting position of the cutting blade. The discharge unit includes a fixed frame, a fixed frame is fixedly installed on the front side of the docking mold tube, and two sliding frames are slidably installed on the fixed frame through a vertical fixed column with an axis. The opposite surfaces of the two sliding frames are rotatably provided with rotating wheels with an axis extending forward and backward through a U-shaped frame. The docking mold tube is provided with a working groove corresponding to the rotating wheel; Two symmetrically spaced rings are fixedly sleeved on the fixed column, and two sliding frames are located between the two spaced rings. When the sliding frame is in contact with the corresponding spacer ring, the distance between the two rotating wheels is the same as the catalyst diameter. When the U-shaped frame is in contact with the mating mold tube, the distance between the two rotating wheels is less than the catalyst diameter.

2. The catalyst pelletizing mechanism according to claim 1, characterized in that: The left end face of the docking mold tube is fixedly provided with a frustum-shaped discharge cylinder that is smaller on the right and larger on the left. The inner wall of the discharge cylinder is provided with multiple circumferentially distributed air holes that are obliquely oriented towards the axis of the discharge cylinder from left to right. A cavity ring is fixedly sleeved on the outside of the discharge cylinder, and the air holes are connected to the cavity inside the cavity ring.

3. The catalyst pelletizing mechanism according to claim 1, characterized in that: The cleaning unit also includes a mounting frame, with mounting frames fixedly installed on both the front and rear sides of the mold head and the docking mold tube; The mounting bracket has two screws fixedly installed on both the upper and lower ends, with the screws distributed in front and behind and with the axis vertical. The cleaning brush is movably sleeved on the two adjacent screws on the upper side, and the bristles of the cleaning brush face the adjacent mounting brackets on the left and right sides. The distance between the two cleaning brushes on the left and right sides is greater than the thickness of the cutting blade.

4. A catalyst pelletizing mechanism according to claim 3, characterized in that: The discharge assembly includes a material collection chamber. The material collection chamber is provided in the mounting frame. Multiple suction holes are arranged in a matrix on the opposite faces of two adjacent mounting frames. The two suction holes on the left and right sides are symmetrical. The suction holes on the right mounting frame are inclined upward from right to left.

5. A catalyst pelletizing mechanism according to claim 3, characterized in that: The grinding tool assembly includes mounting blocks. Mounting blocks are movably sleeved on two screws on the lower side of the same mounting bracket. Grinding blocks are fixedly mounted on the opposite surfaces of two adjacent mounting blocks. The distance between two opposite grinding blocks is the same as the thickness of the cutting blade.

6. The catalyst pelletizing mechanism according to claim 1, characterized in that: A reciprocating threaded rod with its axis extending back and forth is rotatably mounted on the worktable, and the thread of the reciprocating threaded rod passes through the tool holder. A docking post with its axis extending forward and backward is fixedly installed on the front side of the tool holder, and a docking sleeve that fits into the docking post is fixedly installed on the rear side of the docking mold tube.

7. A catalyst pelletizing mechanism according to claim 1, characterized in that: The right end face of the fixed frame is fixedly provided with a guide post whose axis extends from left to right. The front end faces of the two front mounting frames are fixedly provided with guide blocks. The left guide block is fixedly sleeved on the guide post, and the right guide block is slidably sleeved on the guide post. A fitting ring is fixedly sleeved on the guide post. When the fitting ring fits the right guide block, the distance between the die head and the docking die tube is adapted to the thickness of the cutting blade.

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