Powder metallurgy raw material linkage crushing device and raw material crushing processing technology thereof

Abstract

The application discloses a kind of powder metallurgy raw material linkage crushing device and raw material crushing processing technology, specifically related to powder metallurgy raw material linkage crushing technical field, including the bottom shell of crusher, the side of the bottom shell of crusher is communicated with inverted hopper, the inner wall top end of the inverted hopper is installed with crushing mechanism, and the upper surface of crusher bottom shell is equipped with turnover assembly;The crushing mechanism includes the crushing tooth plate installed in the inner wall top end of inverted hopper.The application can realize crushing according to specified crushing particle diameter by crushing mechanism, turnover assembly and material guiding assembly, avoid causing some raw material block shape larger also will not cause sieve plate blockage, without re-implementing crushing, higher crushing efficiency, can improve the processing efficiency of equipment, shorten maintenance time, without personnel later sweeping back the raw material after crushing that overflow, improve crushing efficiency, and the above can effectively improve the linkage crushing efficiency of powder metallurgy raw material.

Description

Technical Field

[0001] This invention relates to the field of powder metallurgy raw material crushing technology, and more specifically, to a powder metallurgy raw material crushing device and its raw material crushing and processing technology. Background Technology

[0002] Powder metallurgy is a process technology that produces metal powders or uses metal powders as raw materials, and manufactures metal materials, composite materials and various types of products through forming and sintering. Powder metallurgy raw materials are produced by crushing block raw materials into a crusher.

[0003] The prior art patent CN111359704B discloses a powder metallurgy raw material linkage crushing device, including a square cylinder, a primary crushing mechanism, and a secondary crushing mechanism. The lower end of the square cylinder is installed on an existing working surface, the primary crushing mechanism is installed at the upper end of the inside of the square cylinder, and the secondary crushing mechanism is arranged directly below the primary crushing mechanism. The secondary crushing mechanism is installed inside the square cylinder by a sliding fit. This invention adopts a multi-stage grinding structure design concept for metallurgical raw material crushing and processing. Based on the primary and secondary crushing mechanisms, an auxiliary grinding structure is added, thereby improving the crushing degree of metallurgical raw materials and increasing the qualification rate of the crushed metallurgical raw material products. At the same time, a structure is set up to recycle and reprocess missed metallurgical raw materials or metallurgical raw materials that have not been ground, so as to maximize the utilization of metallurgical raw materials.

[0004] However, the following defects still exist in the use of the above-mentioned powder metallurgy raw material linkage crushing device;

[0005] 1. The primary crushing mechanism and the secondary crushing mechanism are linked to achieve crushing. Although they can crush in contact, they cannot crush according to the specified particle diameter. This can easily cause some larger raw material blocks to move to the screen plate and cause blockage, requiring them to be crushed again, resulting in low crushing efficiency.

[0006] 2. Since the equipment uses high-speed rotation for crushing, if the equipment is damaged or stones get stuck, maintenance will require disassembling each bolt on the outer shell, which is inconvenient and affects the crushing efficiency. Summary of the Invention

[0007] This invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different approach. To overcome the aforementioned deficiencies of existing technologies, this invention provides a powder metallurgy raw material linkage crushing device and its raw material crushing process. This solves the problems mentioned in the background technology, such as the inability to crush according to a specified particle diameter, the tendency for larger raw material blocks to move onto the screen plate and cause blockages, and the inconvenience and reduced crushing efficiency caused by disassembling bolts one by one during maintenance if equipment damage or stones become stuck.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a powder metallurgy raw material linkage crushing device, including a crusher bottom shell, a hopper connected to one side of the crusher bottom shell, a crushing mechanism installed at the top of the inner wall of the hopper, and a tilting component provided on the upper surface of the crusher bottom shell;

[0009] The crushing mechanism includes a crushing tooth plate installed at the top of the inner wall of the hopper, and a hydraulic cylinder is fixedly connected to the top of the crushing tooth plate. A rotating rod is movably inserted into one side of the crusher bottom shell and located at one side of the hopper. A rotating sleeve shaft is fixedly fitted on the outer wall of the rotating rod near its middle. Multiple sets of crushing blades are evenly distributed in a ring on the outer wall of the rotating sleeve shaft. Friction tooth plates are installed between two adjacent sets of crushing blades. A positioning arc-shaped mesh plate is fixedly connected to the inner wall of the crusher bottom shell.

[0010] Preferably, the acute angle formed between the hopper and the bottom shell of the crusher is 45 degrees, and the inner wall of the hopper is polished. The pushing end of the hydraulic cylinder passes through the top of the hopper and extends to the upper surface of the crushing tooth plate. The pushing end of the hydraulic cylinder is movably connected to the hopper. The friction tooth plate and the rotating sleeve shaft are fixedly connected by welding technology. Both the rotating sleeve shaft and the friction tooth plate are made of stainless steel.

[0011] Preferably, a support frame for vertical support of the crusher bottom shell is fixedly connected to the bottom end of the crusher bottom shell, and pulleys are fitted on the outside of the rotating rod and near the other side of the crusher bottom shell. A drive pulley is installed below the pulley, and a drive belt is drivenly fitted on the outer wall of the drive pulley. A drive motor is coaxially connected to one end of the drive pulley.

[0012] Preferably, the tilting assembly includes a crusher top shell hinged to the upper surface of the crusher bottom shell, a collar block welded to one side of the crusher top shell, a locking cap provided above the collar block, and a connecting rod welded to the bottom of the locking cap at its center point. A movably connected collar rotating rod is installed outside the connecting rod and below the crusher bottom shell. Sleeve blocks are movably fitted on the outer wall of the collar rotating rod and on both sides of the outer wall of the connecting rod. A servo reduction motor is coaxially driven to one end of the collar rotating rod, and an angle sensor is coaxially fixed to the other end of the collar rotating rod. A tightening cylinder is fixedly connected to the bottom of the connecting rod.

[0013] Preferably, the bottom of the crusher bottom shell is provided with a cover plate at the discharge port position. A material guiding assembly is fixedly installed on both sides of the cover plate. The material guiding assembly includes a linkage block fixedly installed on one side of the cover plate, and an upward pushing cylinder is fixedly connected to the bottom end of the linkage block. A receiving box for receiving powder metallurgy raw materials is provided below the cover plate. A pressure sensor is in contact with the bottom end of the receiving box, and a guide frame is provided on the outside of the receiving box. The receiving box and the guide frame are movably connected, and the outer wall of the receiving box is polished.

[0014] A raw material crushing and processing technology for a powder metallurgy raw material linkage crushing device, the specific steps of which are as follows:

[0015] Step 1: During crushing, the powder metallurgy lumps are poured into the hopper. The support frame supports the bottom shell of the crusher, ensuring that the powder metallurgy lumps move downwards along the inclined surface of the hopper. Simultaneously, the hydraulic cylinder is activated to drive the crushing tooth plates downwards and then upwards, thus quickly compressing the powder metallurgy lumps into a form that can enter the bottom shell of the crusher. After the powder metallurgy lumps enter the bottom shell, the drive motor is activated to drive the drive pulley to rotate at high speed. The drive pulley drives the drive belt, causing the pulley to... High-speed rotation: The pulley drives the rotating rod to rotate, which in turn drives the rotating sleeve shaft to make multiple sets of crushing blades rotate at high speed. When the multiple sets of crushing blades come into contact with the powder metallurgy lumpy raw material, they achieve multi-point splitting, quickly crushing the powder metallurgy lumpy raw material to the specified particle size. Furthermore, the rotating sleeve shaft can drive the friction tooth plate to continuously rotate and grind the powder metallurgy lumpy raw material. Only when the powder metallurgy lumpy raw material is ground to the same particle size as the mesh of the positioning arc-shaped mesh plate will the powder metallurgy lumpy raw material move along the positioning arc-shaped mesh plate to the left side of the cover plate.

[0016] Step 2: During quantitative feeding, the upward-pushing cylinder can be activated to move the linkage block upward. The linkage block moves the cover plate upward along the bottom shell of the crusher, opening the bottom shell of the crusher. The crushed material is then guided along the inclined surface of the bottom shell to the loading box and enters through it. When the set weight matches the weight sensed by the pressure sensor, the upward-pushing cylinder is activated to move the linkage block downward. The linkage block then moves the cover plate to close the bottom shell of the crusher, preventing the crushed material from overflowing. This eliminates the need for personnel to clean up any overflowing material later, thus improving crushing efficiency.

[0017] Step 3: During maintenance, when a set of crushing blades inside the crusher's bottom shell is damaged or jammed, the tightening cylinder can be activated to move the connecting rod upward along the internal guide of the collar rotating rod. The connecting rod moves the locking cap upward, creating a large gap between the locking cap and the collar block. Then, the servo reduction motor is activated to rotate the collar rotating rod 90 degrees. The collar rotating rod then drives the connecting rod, causing the locking cap to rotate. This allows the connecting rod to rotate out of the groove on the collar block, thus eliminating the limiting operation on the collar block. The angle sensor can detect the rotation angle of the collar rotating rod. Once the collar rotating rod has rotated 90 degrees, the servo reduction motor can be stopped via the PLC controller. Then, the crusher's top shell can be rotated upward, allowing it to be hinged open.

[0018] The technical effects and advantages of this invention are as follows:

[0019] 1. This invention uses a crushing mechanism to pour powder metallurgy lumps into the hopper. The hydraulic cylinder is activated to drive the crushing toothed plate to press downwards and then move upwards. The rotating rod drives the rotating sleeve shaft to make multiple sets of crushing blades rotate at high speed and achieve multi-point splitting when in contact with the powder metallurgy lumps. The rotating sleeve shaft drives the friction toothed plate to continuously rotate and grind the powder metallurgy lumps. It can crush according to the specified crushing particle diameter, avoids some raw material blocks being too large, and does not cause screen plate blockage. There is no need to re-crush, and the crushing efficiency is higher.

[0020] 2. When a set of crushing blades inside the bottom shell of the crusher is damaged or jammed by the flipping component, the tightening cylinder is activated to drive the connecting rod to move upward along the internal guide of the collar rotating rod. The servo reduction motor drives the collar rotating rod to rotate 90 degrees, and the connecting rod rotates out from the groove position on the collar block. The connecting rod no longer limits the collar block, so the top shell of the crusher can be quickly disassembled automatically. Then, the entire top shell of the crusher can be opened by flipping it up to open the equipment for maintenance. Therefore, the processing efficiency of the equipment can be improved and the maintenance time can be shortened.

[0021] 3. The present invention adopts a material guiding component. The upward push cylinder is activated to drive the linkage block to move upward. The linkage block drives the cover plate to open the bottom shell of the crusher. When the set weight is the same as the weight sensed by the pressure sensor, the upward push cylinder is activated to drive the linkage block to move downward. This will not cause the crushed material to overflow. There is no need for personnel to clean up the overflowed crushed material later, thus improving the crushing efficiency.

[0022] In summary, through the interaction of the above-mentioned multiple functions, crushing can be achieved according to the specified particle diameter, avoiding the occurrence of some raw material blocks that are too large and will not cause screen plate blockage. There is no need to re-crush, resulting in higher crushing efficiency. This can improve the processing efficiency of the equipment, shorten maintenance time, and eliminate the need for personnel to clean up the crushed raw materials that have overflowed later, thus improving crushing efficiency. In conclusion, this can effectively improve the linkage crushing efficiency of powder metallurgy raw materials. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of a powder metallurgy raw material linkage crushing device according to the present invention.

[0024] Figure 2 This is a side view of a powder metallurgy raw material linkage crushing device according to the present invention.

[0025] Figure 3 This is a schematic diagram of the vertical cross-section structure of a powder metallurgy raw material linkage crushing device according to the present invention.

[0026] Figure 4 This is a schematic diagram of the vertical cross-section of the connection between the bottom shell and the top shell of the crusher in a powder metallurgy raw material linkage crushing device according to the present invention.

[0027] Figure 5 For the present invention Figure 1 Enlarged structural diagram at point A in the middle.

[0028] Figure 6 This is a schematic diagram of the vertical cross-sectional structure of the connection between the bottom shell and the cover plate of the crusher in a powder metallurgy raw material linkage crushing device according to the present invention.

[0029] The attached figures are labeled as follows: 1. Crusher bottom shell; 2. Conveying hopper; 3. Crushing tooth plate; 4. Hydraulic cylinder; 5. Rotating rod; 6. Rotating sleeve shaft; 7. Crushing blade; 8. Friction tooth plate; 9. Positioning arc-shaped mesh plate; 10. Support base frame; 11. Pulley; 12. Drive pulley; 13. Drive belt; 14. Drive motor; 15. Crusher top shell; 16. Collar block; 17. Locking cap; 18. Connecting rod; 19. Collar rotating rod; 20. Sleeve block; 21. Angle sensor; 22. Servo geared motor; 23. Tightening cylinder; 24. Cover plate; 25. Linkage block; 26. Upward push cylinder; 27. Loading box; 28. Guide frame; 29. ​​Pressure sensor. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] As attached Figure 1-6 The diagram shows a powder metallurgy raw material crushing device. The movable base is equipped with a crushing mechanism, a tilting component, and a material guiding component. The arrangement of these mechanisms and components enables crushing to a specified particle size, eliminating the need for subsequent re-crushing, thus improving crushing efficiency and maintenance. The specific structural configuration of each mechanism and component is as follows:

[0032] In some embodiments, as shown in the appendix Figure 1-3 As shown, the crushing mechanism includes a crushing toothed plate 3 installed at the top of the inner wall of the hopper 2, and a hydraulic cylinder 4 is fixedly connected to the top of the crushing toothed plate 3. A rotating rod 5 is movably inserted into one side of the crusher bottom shell 1 and located at one side of the hopper 2. A rotating sleeve shaft 6 is fixedly fitted on the outer wall of the rotating rod 5 near its middle. Multiple sets of crushing blades 7 are evenly distributed in a ring on the outer wall of the rotating sleeve shaft 6. Friction toothed plates 8 are installed between two adjacent sets of crushing blades 7. A positioning arc-shaped mesh plate 9 is fixedly connected to the inner wall of the crusher bottom shell 1. The acute angle formed between the hopper 2 and the crusher bottom shell 1 is 45 degrees. The inner wall of the hopper 2 is polished. The pushing end of the hydraulic cylinder 4 passes through the top of the hopper 2 and extends to the upper surface of the crushing toothed plate 3. The pushing end of the hydraulic cylinder 4 is movably connected to the hopper 2. The friction toothed plate 8 and the rotating sleeve shaft 6 are fixedly connected by welding technology. Both the rotating sleeve shaft 6 and the friction toothed plate 8 are made of stainless steel.

[0033] In some embodiments, as shown in the appendix Figure 1-2 As shown, a support frame 10 is fixedly connected to the bottom end of the crusher bottom shell 1 to provide vertical support for the crusher bottom shell 1, so that the support frame 10 can provide vertical support for the crusher bottom shell 1 and increase the stability of the crusher bottom shell 1. Pulleys 11 are fitted on the outside of the rotating rod 5 and on the other side of the crusher bottom shell 1. A drive pulley 12 is installed below the pulley 11. A drive belt 13 is driven onto the outer wall of the drive pulley 12. A drive motor 14 is coaxially connected to one end of the drive pulley 12 so that the drive pulley 12 can be driven to rotate at high speed by starting the drive motor 14. The drive pulley 12 drives the drive belt 13 to make the pulley 11 rotate at high speed, and the pulley 11 drives the rotating rod 5 to rotate.

[0034] In some embodiments, as shown in the appendix Figure 2-4 As shown, the overturning assembly includes a crusher top shell 15 hinged to the upper surface of the crusher bottom shell 1. A collar block 16 is welded to one side of the crusher top shell 15. A locking cap 17 is provided above the collar block 16, and a connecting rod 18 is welded to the bottom of the locking cap 17 at its center point. A movable collar rotating rod 19 is installed on the outside of the connecting rod 18 and below the crusher bottom shell 1. Sleeve blocks 20 are movably fitted on the outer wall of the collar rotating rod 19 and on both sides of the outer wall of the connecting rod 18. A servo reduction motor 22 is coaxially driven to one end of the collar rotating rod 19, and an angle sensor 21 is coaxially fixed to the other end of the collar rotating rod 19. A tightening cylinder 23 is fixedly connected to the bottom of the connecting rod 18.

[0035] In some embodiments, as shown in the appendix Figure 3-6 As shown, a cover plate 24 is provided at the bottom discharge port of the crusher bottom shell 1. A material guiding assembly is fixedly installed on both sides of the cover plate 24. The material guiding assembly includes a linkage block 25 fixedly installed on one side of the cover plate 24, and an upward push cylinder 26 is fixedly connected to the bottom end of the linkage block 25. A receiving box 27 for receiving powder metallurgy raw materials is provided below the cover plate 24. A pressure sensor 29 is in contact with the bottom end of the receiving box 27, and a guide frame 28 is provided on the outside of the receiving box 27. The receiving box 27 and the guide frame 28 are movably connected, and the outer wall of the receiving box 27 is polished.

[0036] The working principle of this invention is as follows: During crushing, the powder metallurgy block raw material is poured into the hopper 2. The hydraulic cylinder 4 is started to drive the crushing tooth plate 3 to squeeze downward and then move upward. In this way, the powder metallurgy block raw material is quickly squeezed into the bottom shell 1 of the crusher. The drive motor 14 is started to drive the drive pulley 12 to rotate at high speed. The pulley 11 drives the rotating rod 5 to rotate. The rotating rod 5 drives the rotating sleeve shaft 6 to make multiple sets of crushing blades 7 rotate at high speed. When they come into contact with the powder metallurgy block raw material, they achieve multi-point splitting and quickly crush the powder metallurgy block raw material to the specified particle size. The rotating sleeve shaft 6 drives the friction tooth plate 8 to continuously rotate and grind the powder metallurgy block raw material. When the powder metallurgy block raw material is ground to the same particle size as the mesh of the positioning arc-shaped mesh plate 9, the powder metallurgy block raw material will move along the positioning arc-shaped mesh plate 9 to the left side of the cover plate 24.

[0037] When feeding in a fixed quantity, the upward push cylinder 26 can be activated to drive the linkage block 25 to move upward. The linkage block 25 drives the cover plate 24 to open the position of the crusher bottom shell 1. In this way, the crushed material is guided along the inclined surface of the bottom of the crusher bottom shell 1 to move to the position of the receiving box 27. When the set weight is the same as the weight sensed by the pressure sensor 29, the upward push cylinder 26 is activated to drive the linkage block 25 to move downward, and the crusher bottom shell 1 is closed. This prevents the crushed material from overflowing and eliminates the need for personnel to clean up the overflowed crushed material later, thus improving crushing efficiency.

[0038] During maintenance, when a set of crushing blades 7 inside the crusher bottom shell 1 is damaged or jammed, the tightening cylinder 23 is activated, which drives the connecting rod 18 to move upward along the internal guide of the collar rotating rod 19. There is a large gap between the locking cap 17 and the collar block 16. The servo reduction motor 22 is activated, which drives the collar rotating rod 19 to rotate 90 degrees. The connecting rod 18 rotates out from the groove position on the collar block 16, and the connecting rod 18 no longer limits the collar block 16. The angle sensor 21 can sense the rotation angle of the collar rotating rod 19. After the collar rotating rod 19 rotates 90 degrees, the drive of the servo reduction motor 22 can be stopped by the PLC controller, and the crusher top shell 15 can be hinged open.

[0039] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0040] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0041] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A powder metallurgy raw material linkage crushing device, comprising a crusher bottom shell (1), one side of the crusher bottom shell (1) is communicated with a pouring hopper (2), and a crushing mechanism is installed at the top end of the inner wall of the pouring hopper (2), characterized in that: The upper surface of the crusher bottom shell (1) is provided with a turnover assembly; The crushing mechanism includes a crushing tooth plate (3) mounted on the top end of the inner wall of the inverted hopper (2), and the top end of the crushing tooth plate (3) is fixedly connected with a hydraulic cylinder (4); one side of the crusher bottom shell (1) and located at one side of the inverted hopper (2) is movably connected with a rotating rod (5); the outer wall of the rotating rod (5) and close to the middle part is fixedly sleeved with a rotating sleeve shaft (6); a plurality of groups of crushing blades (7) are equidistantly distributed on the outer wall of the rotating sleeve shaft (6) in a circular ring; a friction tooth plate (8) is mounted between adjacent two groups of crushing blades (7); the inner wall of the crusher bottom shell (1) is fixedly connected with a positioning arc mesh plate (9); the overturning assembly includes a crusher top shell (15) hingedly arranged on the upper surface of the crusher bottom shell (1); a sleeve ring block (16) is welded on one side of the crusher top shell (15); a locking cap (17) is arranged above the sleeve ring block (16); a connecting rod (18) is welded and connected at the bottom end of the locking cap (17) and located at the center point position; an actively connected sleeve ring rotating rod (19) is mounted on the outside of the connecting rod (18) and located below the crusher bottom shell (1); a sleeve joint block (20) is movably sleeved on the outer wall of the sleeve ring rotating rod (19) and located at both sides of the outer wall of the connecting rod (18); the friction tooth plate (8) and the rotating sleeve shaft (6) are fixedly connected by welding; the rotating sleeve shaft (6) and the friction tooth plate (8) are both made of stainless steel; a belt pulley (11) is sleeved on the outside of the rotating rod (5) and close to the other side of the crusher bottom shell (1); a driving belt pulley (12) is mounted below the belt pulley (11); a driving belt (13) is drivingly sleeved on the outer wall of the driving belt pulley (12); a driving motor (14) is coaxially and drivingly connected to one end of the driving belt pulley (12); a servo speed reducer motor (22) is coaxially and drivingly connected to one end of the sleeve ring rotating rod (19); an angle sensor (21) is coaxially fixed to the other end of the sleeve ring rotating rod (19); a tightening cylinder (23) is fixedly connected to the bottom end of the connecting rod (18); after the powder metallurgy blocky raw material enters the inside of the crusher bottom shell (1), the driving motor (14) is started to drive the driving belt pulley (12) to rotate at high speed; the driving belt pulley (12) drives the driving belt (13) to make the belt pulley (11) rotate at high speed; the belt pulley (11) drives the rotating rod (5) to rotate; the rotating rod (5) drives the rotating sleeve shaft (6) to make the plurality of groups of crushing blades (7) rotate at high speed; when the plurality of groups of crushing blades (7) contact the powder metallurgy blocky raw material, multi-point splitting is realized, and the powder metallurgy blocky raw material is quickly crushed to a specified particle size; the rotating sleeve shaft (6) drives the friction tooth plate (8) to continuously rotate and grind the powder metallurgy blocky raw material; when one group of crushing blades (7) inside the crusher bottom shell (1) is damaged or stuck during maintenance, the tightening cylinder (23) is started to drive the connecting rod (18) to move upwards along the inside of the sleeve ring rotating rod (19); the connecting rod (18) drives the locking cap (17) to move upwards,There is a large gap between the locking cap (17) and the collar block (16), then start servo deceleration motor (22) drive collar rotating rod (19) rotation ninety degrees, collar rotating rod (19) drive connecting rod (18) make locking cap (17) start to rotate, so that the connecting rod (18) from the collar block (16) on the recess position rotates out, so that the connecting rod (18) no longer play a limiting operation to the collar block (16), and through the angle sensor (21) to the collar rotating rod (19) rotation angle realization induction, when the collar rotating rod (19) rotates ninety degrees can be through the PLC controller to stop servo deceleration motor (22) drive, then turn the crusher top shell (15) upward, the crusher top shell (15) can be hinged open.

2. The powder metallurgy feedstock in-line crushing device of claim 1, wherein: The acute angle between the pouring hopper (2) and the crusher bottom shell (1) is forty-five degrees, and the inner wall of the pouring hopper (2) is polished.

3. The powder metallurgy feedstock in-line crushing device of claim 1, wherein: The pushing end of the hydraulic cylinder (4) penetrates into the upper part of the hopper (2) and extends to the upper surface of the crushing tooth plate (3), and the pushing end of the hydraulic cylinder (4) is movably connected with the pouring hopper (2).

4. The powder metallurgy feedstock in-line crushing device of claim 1, wherein: The bottom end of the crusher bottom shell (1) is fixedly connected with a supporting bottom frame (10) for vertically supporting the crusher bottom shell (1).

5. The powder metallurgy feedstock in-line comminution device of claim 1, wherein: A cover plate (24) is arranged at the bottom discharge port position of the crusher bottom shell (1), guide assemblies are fixedly installed on both sides of the cover plate (24), the guide assembly comprises a linkage block (25) fixedly installed on one side of the cover plate (24), the bottom end of the linkage block (25) is fixedly connected with an upward pushing air cylinder (26), a containing box (27) for containing powder metallurgy raw materials is arranged below the cover plate (24), a pressure sensor (29) is in contact with the bottom end of the containing box (27), and a guide frame (28) is arranged outside the containing box (27).

6. The powder metallurgy feedstock in-line crushing apparatus of claim 5, wherein: The containing box (27) is movably connected with the guide frame (28), and the outer wall of the containing box (27) is polished.

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