Strip extruding device for producing residual oil hydrogenation catalyst

Abstract

The invention discloses a strip extrusion device for producing a residual oil hydrogenation catalyst, and relates to the field of hydrogenation catalyst processing equipment, the strip extrusion device comprises a machine barrel, a mixing bin and a die head; an extrusion screw rod is mounted in the machine barrel and is driven by a driving motor; a connecting cylinder is arranged at the discharging port, the die head is installed on the connecting cylinder, a runner hole used for extruding and discharging is formed in the die head, a pressure relief hole is formed in the connecting cylinder, a piston cylinder is connected to the pressure relief hole, a floating piston is installed in the piston cylinder, and a pressurizing spring is arranged between the end, away from the pressure relief hole, of the piston cylinder and the floating piston. When the die head is not blocked, the pressure on the two sides of the floating piston is balanced; by arranging the pressure relief hole and the piston cylinder, the blocked materials are buffered, the pressure of the materials accumulated at the connecting cylinder is relieved, and the situation that the extrusion screw is damaged due to the fact that the internal pressure of the machine barrel is increased dramatically is avoided.

Description

Technical Field

[0001] The present invention relates to the field of processing equipment for hydrogenation catalysts, and particularly to an extrusion device for producing residue hydrotreating catalysts. Background Art

[0002] Residue hydrotreating catalysts refer to hydrotreating catalysts used for processing residues (such as vacuum residue, deoiled asphalt, etc.) generated during the petroleum processing. The main function of such catalysts is to convert the large-molecule and high-impurity residues into cleaner and more easily processed light oils through hydrogenation reactions, while removing impurities such as sulfur, nitrogen, and metals. In the production of residue hydrotreating catalysts, the extrusion molding method is an important method for industrially producing catalyst carriers. The catalyst is extruded into a strip structure by an extruder, which balances the mechanical strength, mass transfer efficiency, industrial adaptability, and stability of the catalyst. During the extrusion production process of hydrogenation catalysts, the viscous raw materials move along the barrel to the die head under the pushing pressure of the extrusion screw and are extruded into strips through the die head. When the die head becomes blocked, the raw materials in the barrel accumulate, causing an increase in the load on the extrusion screw and easily burning out the driving unit of the extrusion screw. Summary of the Invention

[0003] The problem to be overcome by the present invention is that when the die head becomes blocked, the raw materials in the barrel accumulate, causing an increase in the load on the extrusion screw and easily burning out the driving unit of the extrusion screw. The purpose is to provide an extrusion device for producing residue hydrotreating catalysts.

[0004] The technical problems to be solved by the present invention are achieved by adopting the following technical solutions: An extrusion device for producing residue hydrotreating catalysts, comprising: a barrel, a mixing bin, and a die head; An extrusion screw is installed inside the barrel, and the extrusion screw is driven by a driving motor. One end of the barrel is provided with a feed inlet, and the other end is provided with a discharge outlet. The mixing bin is arranged on the upper part of the barrel, and one end of the mixing bin is communicated with the feed inlet; A connecting cylinder is provided at the discharge outlet, the die head is installed on the connecting cylinder, the die head is provided with a flow channel hole for extrusion and discharge, the connecting cylinder is provided with a pressure relief hole, a piston cylinder is connected to the pressure relief hole, a floating piston is installed in the piston cylinder, and a boosting spring is arranged between the end of the piston cylinder away from the pressure relief hole and the floating piston.

[0005] Furthermore, a support frame is slidably installed on the barrel, a cleaning cover is installed on the support frame, a mounting disc is rotatably arranged on the cleaning cover, the mounting disc is in one-to-one correspondence with the flow channel holes on the die head, a spiral blade is installed on the mounting disc, and the support frame moves along the axis of the barrel and can push the spiral blade into the flow channel holes on the die head.

[0006] Further, a transmission shaft is rotatably installed on the cleaning cover. A hollow cavity is provided inside the extrusion screw. The transmission shaft passes through the die head and the connecting cylinder and coaxially and slidably inserts into the hollow cavity inside the extrusion screw. A driven gear disc is provided on the transmission shaft. A toothed segment meshing with the driven gear disc is provided on the side wall of the hollow cavity inside the extrusion screw. When the transmission shaft moves towards the inside of the extrusion screw, the driven gear disc can be pushed into the toothed segment. A linkage gear disc is installed at the other end of the transmission shaft, and the linkage gear disc meshes with the installation disc.

[0007] Further, a pushing ring is slidably installed on the barrel. The pushing ring is pushed by a telescopic driving unit to move along the axial direction of the barrel. A cooperation ring is fixed on the support frame.

[0008] Further, a piston rod is installed on the floating piston. A pressing block is provided at the end of the piston rod. When the pushing ring moves along the axial direction of the barrel, the pressing block can be pushed to move.

[0009] Further, a reset groove is provided on the side of the piston rod close to the pressing block. Guide ridges are arranged along the axial direction on the side of the barrel. The guide ridges are arranged on both sides of the piston rod. The inside of the guide ridges is hollow. A pressing column is slidably installed on the guide ridges. A support spring is installed inside the guide ridges and applies a force towards the piston rod to the pressing column. A connecting rod is slidably installed inside the guide ridges. A pressing spring is arranged between the connecting rod and the end of the guide ridge close to the piston cylinder. The connecting rod penetrates through the pressing column. An inclined plane cooperating with the pressing column is provided on the connecting rod. When the pressing column moves towards the piston rod side, it squeezes the inclined plane and pushes the connecting rod towards the pressing spring side. The other end of the connecting rod is hinged with a stop block, and the stop block is hinged on the guide ridge. A reset spring is provided between the pushing ring and the cooperation ring.

[0010] Further, a stirring rod is rotatably installed in the mixing bin, and the stirring rod is driven by a stirring motor.

[0011] Further, a lifting cylinder is installed on the support frame. The upper end of the lifting cylinder is connected to the mixing bin through a guide plate. A receiving hopper is provided at the lower part of the cleaning cover, and the lower part of the receiving hopper is communicated with the lower end of the lifting cylinder. A lifting screw is rotatably installed in the lifting cylinder.

[0012] Further, a cooperation frame is provided at the upper part of the lifting cylinder. A cooperation shaft is rotatably installed on the side of the mixing bin. The cooperation shaft is connected to the stirring rod through belt transmission. The cooperation shaft slidably passes through the cooperation frame. A cooperation disc is rotatably installed on the cooperation frame. The cooperation disc is slidably installed on the cooperation shaft through a keyway fit. A cooperation gear is installed at the upper end of the lifting screw, and the cooperation gear meshes with the cooperation disc.

[0013] Further, a pressure relief groove is provided in the transmission shaft along the axial direction. When the transmission shaft moves towards the extrusion screw, the material in the connecting cylinder can be discharged through the pressure relief groove.

[0014] The beneficial effects of the present invention are as follows: In the case of die head blockage, by providing a pressure relief hole and a piston cylinder to buffer the blocked material and relieve the pressure of the material accumulated at the connecting cylinder, it is possible to avoid a sharp increase in the internal pressure of the barrel and damage the extrusion screw. By moving the support frame along the axial direction of the barrel, driving the cleaning cover to move closer to or away from the die head, and then pushing the spiral blade to dock with the flow channel hole on the die head. Through the docking of the spiral blade with the flow channel hole on the die head, the blocked material in the flow channel hole can be cleaned by the rotation of the spiral blade. During the cleaning process, there is no need to stop the extruding device or replace the die head. After the cleaning is completed, through the connection structure between the piston rod and the support frame and the push of the telescopic drive unit, the floating piston can be quickly reset. The material cleaned by the spiral blade is collected by the receiving hopper, and the collected material is then lifted to the mixing bin by the lifting screw in the lifting cylinder, so that the material cleaned by the spiral blade can be reprocessed, reducing material waste. Description of the Drawings

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is an installation schematic diagram of the connecting cylinder of the present invention; Figure 3 It is an installation schematic diagram of the cleaning cover of the present invention; Figure 4 It is an installation schematic diagram of the guiding rib of the present invention; Figure 5 It is a sectional view schematic diagram of the guiding rib of the present invention; Figure 6 It is an installation schematic diagram of the cooperation frame of the present invention; In the figure: 1, barrel; 2, mixing bin; 3, die head; 12, extrusion screw; 13, drive motor; 14, feed inlet; 15, discharge outlet; 16, flow channel hole; 21, connecting cylinder; 22, pressure relief hole; 23, piston cylinder; 24, floating piston; 25, booster spring; 31, support frame; 32, cleaning cover; 33, mounting plate; 34, spiral blade; 35, transmission shaft; 36, driven sprocket; 37, tooth segment; 38, linkage sprocket; 41, pushing ring; 42, telescopic drive unit; 43, cooperation ring; 44, piston rod; 45, pressing block; 401, reset groove; 402, guiding rib; 403, pressing column; 404, support spring; 405, connecting rod; 406, pressing spring; 407, inclined plane; 408, stop block; 409, reset spring; 51, stirring rod; 52, stirring motor; 53, lifting cylinder; 54, receiving hopper; 55, lifting screw; 61, cooperation frame; 62, cooperation shaft; 63, cooperation disk; 64, cooperation gear; 65, pressure relief groove. Detailed implementation mode

[0016] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below with reference to specific drawings. Embodiment

[0017] As Figure 1-2 shown, an extrusion device for producing residue hydrotreating catalyst includes: a barrel 1, a mixing bin 2, and a die head 3; An extrusion screw 12 is installed inside the barrel 1. The extrusion screw 12 is driven by a drive motor 13. One end of the barrel 1 is provided with a feed inlet 14, and the other end is provided with a discharge outlet 15. The mixing bin 2 is arranged on the upper part of the barrel 1, and one end of the mixing bin 2 is communicated with the feed inlet 14; A connecting cylinder 21 is provided at the discharge outlet 15. The die head 3 is installed on the connecting cylinder 21. The die head 3 is provided with a flow channel hole 16 for extruding the material. The connecting cylinder 21 is provided with a pressure relief hole 22. A piston cylinder 23 is connected to the pressure relief hole 22. A floating piston 24 is installed in the piston cylinder 23. A booster spring 25 is arranged between one end of the piston cylinder 23 far from the pressure relief hole 22 and the floating piston 24. The booster spring 25 is used to apply pressure to the floating piston 24 to balance the pressures on both sides of the floating piston 24 when the die head 3 is not blocked; When the die head 3 is blocked, the extrusion screw 12 in the barrel 1 continues to rotate, pushing the material in the barrel 1 towards the connecting cylinder 21, so that the material at the connecting cylinder 21 accumulates. The accumulated material flows more into the pressure relief hole 22 under the action of pressure and is extruded into the piston cylinder 23 through the pressure relief hole 22. The material in the piston cylinder 23 pushes the floating piston 24 to move; Thus, in the case where the die head 3 is blocked, by providing a pressure relief hole 22 and a piston cylinder 23, the blocked material is buffered, and the pressure of the material accumulated at the connecting cylinder 21 is relieved, so as to avoid the internal pressure of the barrel 1 increasing sharply and damaging the extrusion screw 12. Embodiment

[0018] Based on Embodiment 1, as Figure 1-5 shown, a support frame 31 is slidably mounted on the barrel 1, a cleaning cover 32 is mounted on the support frame 31, a mounting disc 33 is rotatably provided on the cleaning cover 32, the mounting disc 33 is in one-to-one matching with the flow channel holes 16 on the die head 3, a spiral blade 34 is mounted on the mounting disc 33, and the support frame 31 moves along the axis of the barrel 1, and the spiral blade 34 can be pushed into the flow channel holes 16 on the die head 3. The spiral blade 34, the mounting disc 33 and the flow channel holes 16 are coaxially arranged; By using the support frame 31 to move along the axis direction of the barrel 1, driving the cleaning cover 32 to move closer to or away from the die head 3, and further pushing the spiral blade 34 to dock with the flow channel holes 16 on the die head 3; When the cleaning cover 32 moves towards the die head 3, the spiral blade 34 on the cleaning cover 32 is pushed into the flow channel holes 16 on the die head 3. By rotating the mounting disc 33, the spiral blade 34 rotates in the flow channel holes 16, and the blocked material in the flow channel holes 16 is pushed to move by the rotation of the spiral blade 34, and the blockage in the flow channel holes 16 is taken out of the flow channel holes 16, so as to realize the dredging of the flow channel holes 16; After the cleaning of the flow channel holes 16 is completed, the support frame 31 pushes the cleaning cover 32 to move away from the die head 3, driving the spiral blade 34 to disengage from the flow channel holes 16. At this time, the pressurized material in the connecting cylinder 21 can form a normal strip structure again when being discharged through the flow channel holes 16 on the die head 3; A transmission shaft 35 is rotatably mounted on the cleaning cover 32. There is a hollow cavity inside the extrusion screw 12. The transmission shaft 35 passes through the die head 3 and the connecting cylinder 21 and coaxially and slidably inserts into the hollow cavity inside the extrusion screw 12. A driven gear disc 36 is provided on the transmission shaft 35, and a tooth engaging section 37 meshing with the driven gear disc 36 is provided on the side wall of the hollow cavity inside the extrusion screw 12. When the transmission shaft 35 moves towards the inside of the extrusion screw 12, the driven gear disc 36 can be pushed into the tooth engaging section 37. A linkage gear disc 38 is mounted at the other end of the transmission shaft 35, and the linkage gear disc 38 meshes with the mounting disc 33; When the support frame 31 drives the cleaning cover 32 to move towards the die head 3, the cleaning cover 32 drives the transmission shaft 35 to insert into the extrusion screw 12. The transmission shaft 35 pushes the driven gear disc 36 to extend into the tooth engaging section 37 inside the extrusion screw 12. When the extrusion screw 12 rotates, through the meshing of the tooth engaging section 37 and the driven gear disc 36, the transmission shaft 35 is driven to rotate. The transmission shaft 35 drives the linkage gear disc 38 to rotate, and further drives the mounting disc 33 to rotate. Thus, the spiral blade 34 is driven to rotate self - rotatably; A pushing ring 41 is slidably mounted on the barrel 1. The pushing ring 41 is pushed by a telescopic driving unit 42 to move along the axial direction of the barrel 1. A cooperation ring 43 is fixed on the support frame 31. The telescopic driving unit 42 can be a hydraulic push rod or a cylinder. Here, the cylinder is taken as an example. When the cylinder contracts, it drives the pushing ring 41 to move away from the piston cylinder 23. The pushing ring 41 contacts the cooperation ring 43 and pushes the cooperation ring 43 to move, thereby driving the support frame 31 and the cleaning cover 32 to move towards the die head 3 side, and inserting the spiral blade 34 into the flow channel hole 16. A piston rod 44 is mounted on the floating piston 24. A pressing block 45 is provided at the end of the piston rod 44. When the pushing ring 41 moves along the axial direction of the barrel 1, it can push the pressing block 45 to move. When the cylinder pushes the pushing ring 41 to move towards the piston cylinder 23 side, the pushing ring 41 contacts the pressing block 45 and pushes the pressing block 45 and the piston rod 44 to move into the piston cylinder 23, thereby quickly resetting the floating piston 24 inside the piston cylinder 23 and discharging the material that has entered the piston cylinder 23. A reset groove 401 is provided on the side of the piston rod 44 close to the pressing block 45. Guide ridges 402 are arranged along the axial direction on the side of the barrel 1. The guide ridges 402 are arranged on both sides of the piston rod 44. The inside of the guide ridges 402 is hollow. A pressing column 403 is slidably mounted on the guide ridges 402. A support spring 404 is installed inside the guide ridges 402. The support spring 404 exerts a force on the pressing column 403 towards the piston rod 44. A connecting rod 405 is slidably mounted inside the guide ridges 402. A pressing spring 406 is provided between the connecting rod 405 and the end of the guide ridges 402 close to the piston cylinder 23. The connecting rod 405 passes through the pressing column 403. An inclined plane 407 cooperating with the pressing column 403 is provided on the connecting rod 405. When the pressing column 403 moves towards the piston rod 44 side, it squeezes the inclined plane 407 and pushes the connecting rod 405 to move towards the pressing spring 406 side. The other end of the connecting rod 405 is hinged with a stop block 408. The stop block 408 is hinged on the guide ridges 402. A reset spring 409 is provided between the pushing ring 41 and the cooperation ring 43. When the die head 3 is blocked, the internal pressure of the barrel 1 increases. The material accumulated in the connecting barrel 21 enters the piston cylinder 23, pushing the floating piston 24 to move. The floating piston 24 pushes the piston cylinder 23 to move. At this time, the pressing column 403 disengages from the reset groove 401 on the side of the piston rod 44. Extruded by the piston rod 44, the pressing column 403 contracts into the guiding rib 402. The acting force of the pressing column 403 on the inclined plane 407 of the connecting rod 405 decreases. Under the action of the pressing spring 406, the connecting rod 405 moves towards the stopper 408, thereby pushing the stopper 408 to deflect. One end of the stopper 408 deflects outside the guiding rib 402. When dredging the die head 3, the cylinder contracts to drive the pushing ring 41 to move away from the side of the piston cylinder 23, driving the cooperative ring 43 to move. The cooperative ring 43 pulls the support frame 31 and the cleaning cover 32 to move together. When the cooperative ring 43 moves to the position of the stopper 408, the cylinder stops contracting. The spiral blade 34 on the cleaning cover 32 is inserted into the flow channel hole 16 to clean the flow channel hole 16. When resetting the floating piston 24, the cylinder is pressurized. The cylinder pushes the pushing ring 41 to move towards the side of the piston cylinder 23. At this time, due to the limitation of the stopper 408, the cooperative ring 43 separates from the pushing ring 41. The pushing ring 41 moves to push the pressing block 45 and the piston rod 44 into the piston cylinder 23. As the piston rod 44 pushes the floating piston 24 to move, the material in the piston cylinder 23 is extruded into the connecting barrel 21. When the reset groove 401 on the piston rod 44 is docked with the pressing column 403, the pressing column 403 is inserted into the reset groove 401 under the action of the support spring 404. As the pressing column 403 moves, it pushes the connecting rod 405 towards the pressing spring 406, thereby driving the stopper 408 to deflect. The end of the stopper 408 contracts into the guiding rib 402. At this time, without the limitation of the stopper 408, the cooperative ring 43 quickly moves towards the pushing plate under the action of the reset spring 409, thereby pushing the support frame 31 and the cleaning cover 32 to move away from the die head 3, causing the spiral blade 34 to disengage from the flow channel hole 16. After completing the above operations, the cylinder contracts, causing the pushing ring 41 to displace to the middle position of the guiding rib 402, waiting for the next cleaning operation of the flow channel hole 16; While cleaning the die head 3, it is possible to clean the material in the piston cylinder 23 and quickly reset the floating piston 24. During the cleaning process of the die head 3, there is no need to stop the extrusion device and no need to replace the die head 3. Embodiment

[0019] Based on Embodiment 2, as Figure 1-6 shown, a stirring rod 51 is rotatably installed in the mixing bin 2, and the stirring rod 51 is driven by a stirring motor 52; the materials to be mixed enter the mixing bin 2, and the stirring motor 52 drives the stirring rod 51 to rotate to mix the materials in the mixing bin 2. The mixed materials then enter the barrel 1 through the feed port 14 of the barrel 1 to promote the mixing of the materials; A lifting cylinder 53 is installed on the support frame 31. The upper end of the lifting cylinder 53 is connected to the mixing bin 2 through a feeding plate. A material receiving hopper 54 is provided at the lower part of the cleaning cover 32. The lower part of the material receiving hopper 54 is communicated with the lower end of the lifting cylinder 53. A lifting screw 55 is rotatably installed in the lifting cylinder 53; When the cleaning cover 32 is cleaning the die head 3, during this process, the material carried out by the rotation of the spiral blade 34 is not in strips and thus cannot be used as a qualified product. The material receiving hopper 54 is used to collect the material cleaned by the spiral blade 34, and the collected material is then lifted to the mixing bin 2 by the lifting screw 55 in the lifting cylinder 53. Thus, the material cleaned by the spiral blade 34 can be reprocessed, reducing material waste; A cooperation frame 61 is provided at the upper part of the lifting cylinder 53. A cooperation shaft 62 is rotatably installed on the side of the mixing bin 2. The cooperation shaft 62 is connected to the stirring rod 51 through belt drive. The cooperation shaft 62 slidably passes through the cooperation frame 61. A cooperation disk 63 is rotatably installed on the cooperation frame 61. The cooperation disk 63 is slidably installed on the cooperation shaft 62 through keyway fit. A cooperation gear 64 is installed at the upper end of the lifting screw 55, and the cooperation gear 64 meshes with the cooperation disk 63; When the stirring rod 51 rotates, it drives the cooperation shaft 62 to rotate. The cooperation shaft 62 drives the cooperation disk 63 to rotate through keyway fit. The rotation of the cooperation disk 63 drives the cooperation gear 64 to rotate. When the cooperation gear 64 rotates, it drives the lifting screw 55 to rotate. By using the rotation of the lifting screw 55, the material at the lower part of the lifting cylinder 53 can be lifted to the upper part of the lifting cylinder 53, and the material in the material receiving hopper 54 can be conveyed to the mixing bin 2; A pressure relief groove 65 is arranged along the axial direction of the transmission shaft 35. When the transmission shaft 35 moves towards the extrusion screw 12, the material in the connecting cylinder 21 can be discharged through the pressure relief groove 65; Since when the air cylinder pushes the pushing ring 41 to move, it will first push the floating piston 24 to reset. The material in the piston cylinder 23 is squeezed into the connecting cylinder 21, which will cause the pressure inside the connecting cylinder 21 to increase. When the top pressure column 403 does not enter the reset groove 401, the cooperation ring 43 is restricted by the stop block and is located at one end of the guiding rib 402. At this time, the cooperation ring 43, the support frame 31, and the cleaning cover 32 cannot move. The spiral blade 34 on the cleaning cover 32 is inserted into the flow channel hole 16, and the insertion of the spiral blade 34 will also affect the outflow of the material inside the connecting cylinder 21. Therefore, by arranging the pressure relief groove 65 on the transmission shaft 35, before the spiral blade 34 is inserted into the flow channel hole 16, it is ensured that the material in the connecting cylinder 21 can flow out through the pressure relief groove 65, and the connecting cylinder 21 can also be decompressed when the floating piston 24 resets; When cleaning the die head 3, when the transmission shaft 35 moves into the extrusion screw 12, one end of the pressure relief groove 65 moves with the transmission shaft 35 and extends into the die head 3. The material in the connecting cylinder 21 can enter the pressure relief groove 65 and be discharged from the connecting cylinder 21 through the pressure relief groove 65, thereby reducing the material pressure inside the connecting cylinder 21.

[0020] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An extrusion device for producing residue hydrotreating catalysts, characterized in that, Including: A barrel (1), a mixing bin (2), and a die head (3); An extrusion screw (12) is installed inside the barrel (1), the extrusion screw (12) is driven by a driving motor (13), a feed inlet (14) is provided at one end of the barrel (1), a discharge outlet (15) is provided at the other end, the mixing bin (2) is arranged above the barrel (1), and one end of the mixing bin (2) is communicated with the feed inlet (14); A connecting cylinder (21) is provided at the discharge outlet (15), the die head (3) is installed on the connecting cylinder (21), a flow channel hole (16) for extruding the material is provided on the die head (3), a pressure relief hole (22) is provided on the connecting cylinder (21), a piston cylinder (23) is connected to the pressure relief hole (22), a floating piston (24) is installed in the piston cylinder (23), and a boosting spring (25) is arranged between one end of the piston cylinder (23) away from the pressure relief hole (22) and the floating piston (24).

2. The extrusion device for producing residue hydrotreating catalyst according to claim 1, characterized in that, A support frame (31) is slidably installed on the barrel (1), a cleaning cover (32) is installed on the support frame (31), a mounting disc (33) is rotatably arranged on the cleaning cover (32), the mounting disc (33) is in one-to-one correspondence with the flow channel hole (16) on the die head (3), a spiral blade (34) is installed on the mounting disc (33), and the support frame (31) moves along the axis of the barrel (1) and can push the spiral blade (34) into the flow channel hole (16) on the die head (3).

3. The extrusion device for producing residue hydrotreating catalyst according to claim 2, characterized in that, A transmission shaft (35) is rotatably installed on the cleaning cover (32), a hollow cavity is provided inside the extrusion screw (12), the transmission shaft (35) passes through the die head (3) and the connecting cylinder (21) and coaxially and slidably inserts into the hollow cavity inside the extrusion screw (12), a driven gear disc (36) is provided on the transmission shaft (35), a tooth engaging section (37) engaged with the driven gear disc (36) is provided on the side wall of the hollow cavity inside the extrusion screw (12), when the transmission shaft (35) moves towards the inside of the extrusion screw (12), the driven gear disc (36) can be pushed into the tooth engaging section (37), and a linkage gear disc (38) is installed at the other end of the transmission shaft (35), and the linkage gear disc (38) is engaged with the mounting disc (33).

4. The extrusion device for producing residue hydrotreating catalyst according to claim 2, characterized in that, A pushing ring (41) is slidably installed on the barrel (1), the pushing ring (41) is pushed by a telescopic driving unit (42) to move along the axis direction of the barrel (1), and a cooperation ring (43) is fixed on the support frame (31).

5. A extrusion device for producing residue hydrotreating catalyst according to claim 4, characterized in that, A piston rod (44) is installed on the floating piston (24), a pressing block (45) is provided at the end of the piston rod (44), and when the pushing ring (41) moves along the axis direction of the barrel (1), the pressing block (45) can be pushed to move.

6. The extrusion device for producing residue hydrotreating catalyst according to claim 5, characterized in that, On one end side of the piston rod (44) close to the pressing block (45), a reset groove (401) is provided. On the side of the barrel (1), a guiding rib (402) is arranged along the axial direction. The guiding ribs (402) are arranged on both sides of the piston rod (44). The inside of the guiding rib (402) is hollow. A pressing column (403) is slidably mounted on the guiding rib (402). A supporting spring (404) is installed inside the guiding rib (402). The supporting spring (404) applies a force to the pressing column (403) in the direction of the piston rod (44). A connecting rod (405) is slidably mounted inside the guiding rib (402). A pressing spring (406) is arranged between the connecting rod (405) and one end of the guiding rib (402) close to the piston cylinder (23). The connecting rod (405) penetrates through the pressing column (403). An inclined plane (407) cooperating with the pressing column (403) is arranged on the connecting rod (405). When the pressing column (403) moves towards the piston rod (44), the inclined plane (407) is squeezed, and the connecting rod (405) is pushed to move towards the pressing spring (406). The other end of the connecting rod (405) is hingedly installed with a stop block (408). The stop block (408) is hinged on the guiding rib (402). A reset spring (409) is arranged between the pushing ring (41) and the cooperating ring (43).

7. A extrusion device for producing residue hydrotreating catalyst according to claim 2, characterized in that, A stirring rod (51) is rotatably installed in the mixing bin (2). The stirring rod (51) is driven by a stirring motor (52).

8. A extrusion device for producing residue hydrotreating catalyst according to claim 7, characterized in that, A lifting cylinder (53) is installed on the support frame (31). The upper end of the lifting cylinder (53) is connected to the mixing bin (2) through a guiding plate. A receiving hopper (54) is provided at the lower part of the cleaning cover (32). The lower part of the receiving hopper (54) is communicated with the lower end of the lifting cylinder (53). A lifting screw (55) is rotatably installed in the lifting cylinder (53).

9. The extrusion device for producing residue hydrotreating catalyst according to claim 8, wherein, A cooperating frame (61) is provided at the upper part of the lifting cylinder (53). A cooperating shaft (62) is rotatably installed on the side of the mixing bin (2). The cooperating shaft (62) is connected to the stirring rod (51) through belt transmission. The cooperating shaft (62) slidably penetrates through the cooperating frame (61). A cooperating disk (63) is rotatably installed on the cooperating frame (61). The cooperating disk (63) is slidably installed on the cooperating shaft (62) through keyway fit. A cooperating gear (64) is installed at the upper end of the lifting screw (55). The cooperating gear (64) meshes with the cooperating disk (63).

10. The extrusion device for producing residue hydrotreating catalyst according to claim 1, characterized in that, A pressure relief groove (65) is arranged along the axial direction of the transmission shaft (35). When the transmission shaft (35) moves towards the extrusion screw (12), the material in the connecting cylinder (21) can be discharged through the pressure relief groove (65).

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