Hammer mill

Abstract

The application provides a hammer crusher, which comprises a frame, a power component and a crushing chamber, a power shaft of the power component penetrates into the crushing chamber, the crushing chamber is provided with an inlet hole and an outlet hole below the inlet hole, a sieve plate covering the outlet hole is connected to an inner wall of the crushing chamber, a plurality of mounting seats arranged in stacks are connected to a positioning plate, the mounting seat comprises a support plate and a support cylinder, the support plate is fixed to one end of the support cylinder, two sliding grooves evenly arranged along an axis of the support cylinder are formed in the support cylinder, a hammer head is slidably connected in the sliding groove, a fixing bolt and an adjusting shaft are arranged on an end cover, the fixing bolt penetrates through the mounting seat and is threadedly connected with the positioning plate, the fixing bolt is abutted against the end cover, the adjusting shaft penetrates through a containing cavity and is rotationally connected to the support plate, the adjusting shaft is rotated and moves the hammer head along a length direction of the sliding groove through a transmission assembly, and the service life of the hammer head is prolonged, the maintenance frequency is reduced, and the operation efficiency of the equipment is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pulverizing machinery, in particular, to a hammer crusher. BACKGROUND

[0002] At present, a sterile hammer crusher is disclosed in Chinese patent CN222000088U, wherein the input shaft is hollow, the input shaft is provided with a long hole one, the input shaft is connected with a pulverizing hammer, the input shaft is rotatably connected with a switching hollow cylinder, the switching hollow cylinder is provided with a long hole two, the switching hollow cylinder is rotatably connected with a fixed hollow cylinder, the fixed hollow cylinder is provided with a long hole three, the fixed hollow cylinder is fixedly arranged, the switching hollow cylinder can be rotated and locked through an adjusting mechanism, the fixed hollow cylinder is connected with a high-temperature fan, when pulverizing, the three long holes are not communicated with each other, the pulverizing hammer pulverizes raw materials, when sterilizing after production, the three long holes are communicated by controlling the rotation of the switching hollow cylinder, the high-temperature hot air directly irradiates the inner wall of the pulverizing chamber and the rotating pulverizing hammer, the residual materials are removed with the hot air, and the hot air is sterilized without dead angle.

[0003] In the sterile hammer crusher, the fixed hammer head must be replaced as a whole after wearing, which causes frequent shutdown maintenance, high replacement cost and low production efficiency in actual production. Especially when processing high-hardness materials, the hammer head wears more rapidly, and these problems are more prominent. Therefore, an innovative design is urgently needed to prolong the service life of the hammer head, reduce the maintenance frequency and improve the operation efficiency of the equipment. SUMMARY

[0004] Therefore, the present application aims to provide a hammer crusher to prolong the service life of the hammer head, reduce the maintenance frequency and improve the operation efficiency of the equipment.

[0005] In order to solve the above technical problems, the technical scheme of the present application is: a hammer crusher, comprising a rack, a power component and a crushing chamber, the power component and the crushing chamber are both fixed on the rack, the power shaft of the power component penetrates into the crushing chamber, the crushing chamber is provided with an inlet hole and an outlet hole below the inlet hole, the inner wall of the crushing chamber is connected with a sieve plate covering the outlet hole, the power shaft is fixed with a positioning plate, the positioning plate is connected with a plurality of mounting seats arranged in stacks, the mounting seat comprises a support plate and a support cylinder, the support plate is fixed at one end of the support cylinder and forms a cavity between the support plate and the support cylinder, the support cylinder is provided with two sliding grooves arranged uniformly along the axis of the support cylinder, the hammer head is slidably connected in the sliding groove, the end of the support cylinder away from the power component is fixed with an end cover, the end cover is provided with a fixing bolt and an adjusting shaft, the fixing bolt penetrates through the mounting seat and is threadedly connected with the positioning plate, the fixing bolt is abutted against the end cover, the adjusting shaft penetrates through the cavity and is rotationally connected with the support plate, the adjusting shaft rotates and drives the hammer head to move along the length direction of the sliding groove through a transmission assembly, and the adjusting shaft is threadedly connected with a locking sleeve for abutting against the end cover.

[0006] The above technical scheme is realized, the hammer head position is adjusted by rotating the adjusting shaft to drive the hammer head to move along the sliding groove, so that the un-worn part of the hammer head can be utilized, the service life of the hammer head is significantly prolonged, the replacement frequency and maintenance downtime are reduced, the maintenance cost is reduced, and the production efficiency is improved. In addition, the adjustable hammer head position can also make the crusher more suitable for the processing requirements of different materials. The cooperation of the fixing bolt and the locking sleeve ensures the stability and operation safety of the adjusted hammer head.

[0007] As a preferred scheme of the present application, the hammer heads on the adjacent mounting seats are arranged in a cross arrangement.

[0008] The above technical scheme is realized, the hammer heads on the adjacent mounting seats are staggered, so that the material is more likely to be impacted by the second layer of hammer heads after being impacted by the first layer of hammer heads, thereby improving the crushing efficiency and fineness. Secondly, the cross arrangement helps to improve the flowability of the material in the crushing chamber, reduces the possibility of material accumulation and blockage, and makes the crushing process more smooth. In addition, this staggered impact mode also helps to disperse the impact force, reduces the overall vibration and noise of the equipment, and improves the operation stability of the equipment. More importantly, the uniform distribution and staggered operation of the hammer heads can more evenly utilize the space in the crushing chamber, avoiding excessive local load, thereby possibly reducing the local wear of the hammer heads and the sieve plate, and further prolonging the service life.

[0009] As a preferred scheme of the present application, the conducting assembly comprises an adjusting disc, an adjusting chute and a convex column, the adjusting disc is located in the cavity, the adjusting shaft passes through the adjusting disc and is fixedly connected with the adjusting disc, the adjusting chute is arranged on the hammer head, and the convex column is slidably connected to the adjusting disc through the elastic assembly, and the convex column is used to penetrate into the adjusting chute.

[0010] The rotation of the adjusting shaft makes the adjustment of the position of the hammer head more accurate and controllable, and the operator can finely adjust the gap between the hammer head and the screen plate to optimize the crushing effect.

[0011] As a preferred scheme of the present application, the elastic assembly comprises an elastic hole, an elastic member and a anti-dropping ring, the elastic hole is arranged on the adjusting disc, the convex column is slidably connected in the elastic hole, the two ends of the elastic member are respectively in contact with the inner wall of the elastic hole and the convex column, and the anti-dropping ring is fixed at the opening of the elastic hole and is in contact with the convex column.

[0012] The above technical scheme is realized, when the convex column on the adjusting disc is aligned with the adjusting chute on the hammer head during installation, the elastic member in the elastic assembly immediately generates a pushing force to accurately push the convex column slidably connected in the elastic hole into the adjusting chute of the hammer head, thereby realizing the quick connection between the adjusting disc and the hammer head.

[0013] As a preferred scheme of the present application, the end of the hammer head penetrating into the cavity is provided with a guide slope, and the end of the convex column away from the adjusting disc is in a semispherical shape, and the guide slope is used to be in contact with the end of the convex column.

[0014] The above technical scheme is realized, when the hammer head slides into the cavity along the sliding groove to approach the adjusting disc during installation, the guide slope first contacts the semispherical end of the convex column, the cooperation of the guide slope and the semisphere can play a good guiding role, so that the convex column slides along the surface of the hammer head and the convex column further generates pressure on the elastic member, the elastic member is further compressed, and when the convex column corresponds to the adjusting chute, the convex column is penetrated into the adjusting chute through the elastic force of the elastic member.

[0015] As a preferred scheme of the present application, the end cover is provided with a locking bolt, the locking bolt passes through the supporting plate and is threadedly connected with the positioning plate, the hammer head is provided with a connecting groove for penetrating the locking bolt, the length direction of the connecting groove is parallel to the length direction of the hammer head, and the locking bolt is fixedly provided with a pressing plate for abutting against the surface of the hammer head.

[0016] The above technical scheme is realized, after the hammer head is moved to the required position by the adjusting shaft, the operator screws the locking bolt on the end cover. The locking bolt passes through the support plate and is threadedly connected with the positioning plate. The pressing plate on the locking bolt moves with the locking bolt and tightly abuts against the surface of the hammer head. The hammer head is firmly fixed in the sliding groove of the support cylinder through the friction force, effectively resisting the huge centrifugal force generated during high-speed rotation, preventing the hammer head from loosening or shifting. The connecting groove parallel to the length direction of the hammer head is opened on the hammer head, which cleverly allows the locking bolt to pass through, so that the locking bolt does not hinder the sliding of the hammer head when adjusting the position of the hammer head. Only after the adjustment is completed, the pressing plate plays its fixing role by screwing the locking bolt. This design is simple and effective, which not only ensures the adjustability of the position of the hammer head, but also ensures the stability of the hammer head in the working state.

[0017] As a preferred scheme of the present application, the auxiliary rod is slidingly connected to the support plate, and the end of the auxiliary rod is fixedly connected with the auxiliary plate. The locking bolt is rotated and makes the auxiliary plate abut against the side wall of the hammer head or separates the auxiliary plate from the hammer head through the connecting assembly.

[0018] The above technical scheme is realized, when the locking bolt is rotated to fix the hammer head, the connecting assembly synchronously drives the auxiliary rod to slide, so that the auxiliary plate tightly abuts against the side wall of the hammer head, forming an additional lateral support, which cooperates with the fixing provided by the pressing plate to realize the double fixing of the hammer head. This design significantly enhances the stability of the hammer head during high-speed operation, effectively prevents lateral swinging, and improves the smoothness of the operation of the equipment. The lateral support also helps to disperse the stress received by the hammer head in the sliding groove, reduces unnecessary friction and wear, thereby prolonging the service life of the hammer head and the sliding groove. More importantly, the rotation of the locking bolt simultaneously controls the radial and lateral fixing, which is simple and efficient to operate, and the overall fixing or loosening of the hammer head can be completed without additional steps, which provides a strong guarantee for the reliable operation of the hammer crusher.

[0019] As a preferred scheme of the present application, the connecting assembly comprises a gear slot, a connecting shaft, a gear and a rack. A plurality of gear slots are opened on the outer wall of the locking bolt and are uniformly distributed along the axis of the locking bolt. The connecting shaft is rotationally connected to the support plate. The gear is fixed on the connecting shaft and is coaxially arranged. The rack is fixed on the auxiliary rod and is engaged with the gear.

[0020] When the locking bolt is operated, the teeth on the outer wall drive the gear on the connecting shaft to rotate, which in turn drives the rack fixed to the auxiliary rod to slide linearly, finally achieving the abutting or separation of the auxiliary plate and the side wall of the hammer head. This design brings significant advantages. First, the gear and rack mechanism can accurately convert rotary motion into linear motion, ensuring accurate and reliable positioning of the auxiliary plate. Second, the mechanism has high transmission efficiency, making it easy to control the movement of the auxiliary plate when operating the locking bolt. In addition, the gear and rack structure is relatively compact and durable, suitable for long-term stable operation in the complex environment inside the crusher. More importantly, this linkage ensures that the rotation of the locking bolt and the movement of the auxiliary plate are synchronized, simplifying the operation process and improving the overall convenience and reliability, providing a solid mechanical foundation for the stable fixation of the hammer head.

[0021] As a preferred scheme of the present application, high-hardness PU pads are fixedly connected to the pressing plate and the auxiliary plate, and abut against the outer wall of the hammer head.

[0022] Implementing the above technical solution, first, high-hardness PU material has excellent wear resistance and impact resistance, which can effectively protect the surface of the hammer head, reduce wear and damage caused by direct metal contact, and further prolong the service life of the hammer head. Second, the PU pad can provide good friction, enhance the clamping force and lateral support force of the pressing plate and the auxiliary plate on the hammer head, ensure that the hammer head does not loosen or shift during high-speed operation, and improve the stability and safety of operation. In addition, PU material also has certain shock absorption and noise reduction performance, which can absorb part of the vibration and noise generated during the crushing process, improving the working environment of the equipment. Finally, PU material usually has certain corrosion resistance, which can adapt to the complex environment in the crushing chamber, further improving the reliability and durability of the entire locking mechanism.

[0023] As a preferred scheme of the present application, a cooling plate is fixedly connected to the outer wall of the crushing chamber, a cooling area is formed between the cooling plate and the crushing chamber, and a liquid inlet pipe and a liquid outlet pipe are fixedly connected to the cooling plate and communicate with the cooling area.

[0024] Implementing the above technical solution, the cooling liquid circulates in the cooling area, taking away the heat of the crushing chamber wall, thereby accurately controlling the temperature in the crushing chamber. This is crucial for handling heat-sensitive materials, preventing material deterioration, decomposition or affecting product quality due to overheating. At the same time, appropriate temperature also helps to improve the crushing efficiency, avoid material adhesion, and prolong the service life of key components such as hammer head and screen plate, reducing maintenance costs. In addition, for some materials with potential safety hazards, the cooling system can effectively reduce the risk of overheating and improve the safety of equipment operation.

[0025] In summary, the present application has the following advantages:

[0026] 1、The adjustable hammer head position not only prolongs the service life of the hammer head, reduces the maintenance frequency and cost, but also optimizes the crushing effect according to the material characteristics. The cross arrangement of the hammer heads of adjacent mounting seats further improves the crushing efficiency and material flowability, and helps to reduce the equipment vibration. The locking pin combined with the double fixing mechanism of the pressing plate and the auxiliary plate ensures the high stability and safety of the hammer head under high-speed operation. The delicate conduction assembly and elastic assembly make the adjustment of the hammer head position more accurate, convenient and reliable. Finally, the addition of the cooling system effectively controls the temperature in the crushing chamber, ensures the material quality, improves the safety of equipment operation and prolongs the service life of the parts. These technical features cooperate with each other to comprehensively improve the efficiency, durability and operation convenience of the hammer crusher. If one hammer head breaks, only two hammer heads on the mounting seat need to be replaced, reducing the maintenance cost.

[0027] 2、Currently, there are also schemes for fixing each hammer head by independent screws, that is, the screw is inserted through the mounting seat, and the screw is tightly pressed against the side wall of the hammer head. However, this way has three disadvantages, first, the screw is exposed outside the mounting seat and is easy to be damaged by the material; second, the screw near the positioning plate is blocked by many hammer heads, and it is not easy to operate the screw rotation by hand into the bottom of the crushing chamber; third, it is not practical to tighten and loosen each screw.

[0028] In this patent application, the locking pin is located on the side of the support cylinder and will not be in direct contact with the material, so the locking pin is not easy to be damaged, and the locking pin is tightened and loosened on the end cover, so that all the hammer heads can be positioned and released, and the operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 To embody the structural schematic diagram of the feeding hopper;

[0030] Figure 2 To embody the structural schematic diagram of the discharge hole;

[0031] Figure 3 To embody the structural schematic diagram of the sieve plate;

[0032] Figure 4 To embody the structural schematic diagram of the fixing pin;

[0033] Figure 5 To embody the structural schematic diagram of the connection structure of the two adjacent mounting seats;

[0034] Figure 6 To embody the position schematic diagram of the adjusting shaft;

[0035] Figure 7 To embody the position schematic diagram of the adjusting shaft; Figure 6 the enlarged view of A;

[0036] Figure 8 for embodying the position of the locking bolt;

[0037] Figure 9 for Figure 8 enlarged view of B;

[0038] Figure 10 for embodying the position of the magnet;

[0039] Figure 11 for embodying the structure of the end cover;

[0040] Figure 12 for embodying the external structure of the present application;

[0041] Figure 13 for embodying the external structure of the crushing chamber.

[0042] The drawings show that the hammer crusher comprises a frame 1, a power component 2 and a crushing chamber 3. The power component 2 and the crushing chamber 3 are fixed on the frame 1, a power shaft of the power component 2 penetrates into the crushing chamber 3, the power component 2 is provided with a motor, and the power shaft is a power shaft of the motor. The crushing chamber 3 is provided with an inlet hole 4 and an outlet hole 5 located below the inlet hole 4. The inlet hole 4 is fixed with an inlet hopper 6. DETAILED DESCRIPTION

[0043] The specific embodiments of the present application are further described in detail below with reference to the drawings, so that the technical scheme of the present application is easier to understand and master.

[0044] The hammer crusher comprises a frame 1, a power component 2 and a crushing chamber 3. The power component 2 and the crushing chamber 3 are fixed on the frame 1, a power shaft of the power component 2 penetrates into the crushing chamber 3, the power component 2 is provided with a motor, and the power shaft is a power shaft of the motor. The crushing chamber 3 is provided with an inlet hole 4 and an outlet hole 5 located below the inlet hole 4. The inlet hole 4 is fixed with an inlet hopper 6.

[0045] A clamping block 7 is fixed on the inner wall of the crushing chamber 3, and the cross section of the clamping block 7 is L-shaped. A sieve plate 8 is arranged in an arc shape and is slidably connected to the clamping block 7, so that the sieve plate 8 covers the outlet hole 5. The drawings show that the hammer crusher comprises a frame 1, a power component 2 and a crushing chamber 3. The power component 2 and the crushing chamber 3 are fixed on the frame 1, a power shaft of the power component 2 penetrates into the crushing chamber 3, the power component 2 is provided with a motor, and the power shaft is a power shaft of the motor. The crushing chamber 3 is provided with an inlet hole 4 and an outlet hole 5 located below the inlet hole 4. The inlet hole 4 is fixed with an inlet hopper 6.

[0046] A positioning plate 9 is fixed on the power shaft and coaxially arranged with the power shaft. A plurality of mounting seats 10 are connected to the positioning plate 9 and arranged in stacks. Each mounting seat 10 comprises a support plate 11 and a support cylinder 12. The support plate 11 is fixed to one end of the support cylinder 12 and forms a cavity between the support plate 11 and the support cylinder 12. The support cylinder 12 is annular, and the support plate 11 is disc-shaped.

[0047] Two sliding grooves 13 are formed on each support cylinder 12 and evenly arranged along the axis of the support cylinder 12. The length direction of the sliding groove 13 is arranged along the radial direction of the support cylinder 12. A hammer head 14 is slidably connected in each sliding groove 13. An O-ring (not shown in the figure) is fixedly connected to the inner wall of the sliding groove 13. The inner wall of the O-ring is in contact with the outer wall of the hammer head 14 to achieve sealing.

[0048] The hammer heads 14 on the adjacent two mounting seats 10 are arranged in a cross shape.

[0049] An end cover 15 is fixed to the end of the support cylinder 12 away from the power component 2. The end cover 15 has one and is coaxially arranged with the support cylinder 12. A fixing bolt 16 and an adjusting shaft 17 are arranged on the end cover 15. The fixing bolt 16 has four and is evenly distributed along the axis of the end cover 15. The fixing bolt 16 penetrates through all the mounting seats 10 and is threadedly connected with the positioning plate 9. The fixing bolt 16 is in contact with the end cover 15 to fix all the mounting seats 10 on the positioning plate 9.

[0050] The adjusting shaft 17 has one and is coaxially arranged with the end cover 15. The end of the adjusting shaft 17 is threadedly connected with a locking sleeve 18 for being in contact with the outer wall of the end cover 15. The adjusting shaft 17 penetrates through the cavity and is rotationally connected with the support plate 11 abutting on the positioning plate 9. The adjusting shaft 17 penetrates through the remaining support plates 11. The locking sleeve 18 is a nut. Multiple locking sleeves 18 can be arranged.

[0051] The adjusting shaft 17 is rotated and moves the hammer head 14 along the length direction of the sliding groove 13 through a transmission assembly 19.

[0052] The transmission assembly 19 comprises an adjusting disc 20, an adjusting inclined groove 21 and a convex column 22. The adjusting inclined groove 21 is formed on the hammer head 14. The convex column 22 is slidably connected to the adjusting disc 20 through an elastic assembly 27. The convex column 22 penetrates into the adjusting inclined groove 21 and the end of the convex column 22 is in contact with the inner wall of the support plate 11.

[0053] The adjusting disc 20 is located in the accommodating cavity, the adjusting shaft 17 passes through the adjusting disc 20 and is coaxially arranged, the mounting hole 23 is formed in the outer wall of the adjusting shaft 17, the magnet 24 is fixedly connected in the mounting hole 23, the limiting groove 25 is formed in the outer wall of the adjusting shaft 17, and the limiting strip 26 is fixed to the inner wall of the adjusting disc 20. When the adjusting shaft 17 passes through the adjusting disc 20, the limiting strip 26 is arranged in the limiting groove 25, and the adjusting disc 20 is moved along the length direction of the adjusting shaft 17, so that the adjusting disc 20 is positioned on the adjusting shaft 17 through the magnetic force of the magnet 24, and the magnet 24 adsorbs the limiting strip 26.

[0054] First, the adjusting disc 20 is sleeved on the adjusting shaft 17, the adjusting disc 20 is limited, the mounting seat 10 is sleeved on the adjusting shaft 17, then another adjusting disc 20 is sleeved on the adjusting shaft 17, and then another mounting seat 10 is sleeved on the adjusting shaft 17. In this way, the mounting seat 10 is repeatedly installed on the adjusting shaft 17.

[0055] The elastic assembly 27 comprises elastic recesses 28, elastic members 29 and anti-dropping rings 30. The elastic recesses 28 are formed in the adjusting disc 20, and two elastic recesses 28 are uniformly distributed along the axis of the adjusting disc 20. The convex column 22 is slidingly connected in the elastic recess 28, the two ends of the elastic member 29 are respectively in contact with the inner wall of the elastic recess 28 and the convex column 22, and the anti-dropping ring 30 is fixed at the opening of the elastic recess 28 and is used for being in contact with the convex column 22. The elastic member 29 is a spring.

[0056] The guiding slope 31 is formed at one end of the hammer head 14 penetrating into the accommodating cavity, and the end of the convex column 22 away from the adjusting disc 20 is in a hemispherical shape. The guiding slope 31 is used for being in contact with the end of the convex column 22.

[0057] After all the mounting seats 10 and the adjusting discs 20 are installed, the hammer head 14 is penetrated into the accommodating cavity along the sliding groove 13, the guiding slope 31 on the hammer head 14 is in contact with the end of the convex column 22, the convex column 22 is moved along the guiding slope 31 and the elastic member 29 is further compressed, and when the convex column 22 corresponds to the adjusting inclined groove 21, the convex column 22 is penetrated into the adjusting inclined groove 21 through the elastic force of the elastic member 29. Due to the magnetic force of the magnet 24, the adjusting disc 20 keeps a distance from the supporting plate 11, so that the hammer head 14 is penetrated into the adjusting disc 20 and the supporting plate 11.

[0058] When the adjusting shaft 17 rotates, the adjusting disc 20 rotates, the convex column 22 is in contact with the inner wall of the adjusting inclined groove 21, and the hammer head 14 slides along the sliding groove 13.

[0059] A locking bolt 32 is rotatably arranged on the end cover 15, and is threadedly connected with the positioning plate 9 through the support plate 11. A connecting slot 33 is formed on the hammer head 14 near the accommodating cavity, and is used for passing through the locking bolt 32. The length direction of the connecting slot 33 is parallel to the length direction of the hammer head 14. A pressing plate 34 is fixed on the locking bolt 32, and is used for abutting against the surface of the hammer head 14.

[0060] An auxiliary rod 35 is slidably connected with the support plate 11. An auxiliary plate 36 is fixed on the end of the auxiliary rod 35. The locking bolt 32 is rotated to abut the auxiliary plate 36 against the side wall of the hammer head 14 through a connecting assembly 37, or to separate the auxiliary plate 36 from the hammer head 14.

[0061] The connecting assembly 37 comprises a gear slot 38, a connecting shaft 39, a gear wheel 40 and a gear rack 41. A plurality of gear slots 38 are formed on the outer wall of the locking bolt 32 and are uniformly distributed along the axis of the locking bolt 32. The connecting shaft 39 is rotatably connected with the support plate 11, and the axis of the connecting shaft 39 is parallel to the axis of the locking bolt 32. The gear wheel 40 is fixed on the connecting shaft 39 and is coaxially arranged with the connecting shaft 39. The gear rack 41 is fixed on the auxiliary rod 35 and is engaged with the gear wheel 40.

[0062] When the locking bolt 32 is rotated, the pressing plate 34 moves towards the hammer head 14. The gear wheel 40 is rotated through the gear slot 38. The gear rack 41 is driven by the gear wheel 40 and moves the auxiliary rod 35 towards the hammer head 14, so that the auxiliary plate 36 abuts against the side wall of the hammer head 14. A spring washer (not shown in the figure) is sleeved on the locking bolt 32 and is located on the side of the end cover 15 away from the mounting base 10. The locking bolt 32 is screwed on the positioning plate 9, so that the spring washer is deformed under the pressure of the locking bolt 32 and the end cover 15, thereby preventing the locking bolt 32 from being detached.

[0063] High-hardness PU pads 42 are fixed on the pressing plate 34 and the auxiliary plate 36, and abut against the outer wall of the hammer head 14. The high-hardness PU pads 42 have a certain elasticity, so as to avoid the situation that the auxiliary plate 36 does not abut against the hammer head 14 when the pressing plate 34 abuts against the hammer head 14 due to process errors.

[0064] A cooling plate 43 is fixed on the outer wall of the crushing chamber 3, and a cooling area is formed between the cooling plate 43 and the crushing chamber 3. An inlet pipe 44 and an outlet pipe 45 are fixed on the cooling plate 43 and are in communication with the cooling area. A water tank (not shown in the figure) and a water pump (not shown in the figure) are fixed in the power component 2, and the water pump is installed in the inlet pipe 44. Cooling liquid is injected into the water tank. The inlet pipe 44 and the outlet pipe 45 are in communication with the water tank. When the water pump is started, the cooling liquid is injected into the cooling area from the inlet pipe 44, and then flows back to the water tank from the outlet pipe 45.

[0065] Of course, the above are only typical examples of the present application, in addition to which the present application can have other various specific embodiments, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. A hammer mill, comprising a frame, a power unit, and a grinding chamber, wherein the power unit and the grinding chamber are both fixed to the frame, the power shaft of the power unit passes through the grinding chamber, the grinding chamber has a feed hole and a discharge hole located below the feed hole, and a sieve plate covering the discharge hole is connected to the inner wall of the grinding chamber, characterized in that: The power shaft is fixed with a positioning plate, a plurality of mounting seats are connected to the positioning plate in a stacked manner, the mounting seat comprises a support plate and a support cylinder, the support plate is fixed to one end of the support cylinder and forms a cavity between the support plate and the support cylinder, two sliding grooves are formed on the support cylinder and are uniformly arranged along the axis of the support cylinder, a hammer head is slidably connected in the sliding groove, an end cover is fixed to the end of the support cylinder away from the power component, a fixing bolt and an adjusting shaft are arranged on the end cover, the fixing bolt passes through the mounting seat and is threadedly connected with the positioning plate, the fixing bolt is abutted against the end cover, the adjusting shaft passes through the cavity and is rotatably connected to the support plate, the adjusting shaft is rotated and moves the hammer head along the length direction of the sliding groove through a transmission assembly, a locking sleeve for abutting against the end cover is threadedly connected to the adjusting shaft, a locking bolt is arranged on the end cover, the locking bolt passes through the support plate and is threadedly connected with the positioning plate, a connecting groove for passing the locking bolt is formed in the hammer head, the length direction of the connecting groove is parallel to the length direction of the hammer head, a pressing plate for abutting against the surface of the hammer head is fixed to the locking bolt, an auxiliary rod is slidably connected to the support plate, an auxiliary plate is fixedly connected to the end of the auxiliary rod, the locking bolt is rotated and abuts the auxiliary plate against the side wall of the hammer head or separates the auxiliary plate from the hammer head through a connecting assembly.

2. A hammer mill according to claim 1, characterised in that: The hammers on the adjacent mounting seats are cross-arranged.

3. A hammer mill according to claim 1, characterised in that: The transmission assembly comprises an adjusting disc, an adjusting inclined groove and a convex column, the adjusting disc is located in the cavity, the adjusting shaft passes through the adjusting disc and is fixedly connected with the adjusting disc, the adjusting inclined groove is formed in the hammer head, and the convex column is slidably connected to the adjusting disc through an elastic assembly, and the convex column is used to penetrate into the adjusting inclined groove.

4. A hammer mill according to claim 3, characterised in that: The elastic assembly comprises an elastic recess, an elastic member and an anti-dropping ring, the elastic recess is formed in the adjusting disc, the convex column is slidably connected in the elastic recess, the elastic member is in abutment with the inner wall of the elastic recess and the convex column at two ends respectively, and the anti-dropping ring is fixed to the opening of the elastic recess and is in abutment with the convex column.

5. A hammer mill according to claim 3, characterised in that: A guide inclined surface is formed in the end of the hammer head penetrating into the cavity, and the end of the convex column away from the adjusting disc is in a semispherical shape, and the guide inclined surface is used to abut against the end of the convex column.

6. A hammer mill according to claim 1, characterized in that: The connecting assembly comprises a tooth groove, a connecting shaft, a gear, and a rack, a plurality of tooth grooves are formed in the outer wall of the locking bolt and are uniformly distributed along the axis of the locking bolt, the connecting shaft is rotatably connected to the support plate, the gear is fixed to the connecting shaft and is coaxially arranged, and the rack is fixed to the auxiliary rod and is in mesh with the gear.

7. A hammer mill according to claim 6, characterised in that: High-hardness PU pads are fixedly connected to the pressing plate and the auxiliary plate and are in abutment with the outer wall of the hammer head.

8. A hammer mill according to claim 1, characterized in that: A cooling plate is fixedly connected to the outer wall of the crushing chamber, a cooling area is formed between the cooling plate and the crushing chamber, an inlet pipe and an outlet pipe which are in communication with the cooling area are fixedly connected to the cooling plate.

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