Hammer crusher

Abstract

The hammer crusher comprises a machine body, a feeding hopper is arranged on the machine body, the hammer crusher further comprises a plurality of crushing hammers, a machining barrel, a rotating shaft and a driving assembly, the machining barrel is slidably connected to the machine body, a feeding port and a discharging port are formed in the machining barrel, a grinding barrel is arranged in the machining barrel, and a feeding port and a plurality of filtering holes are formed in the grinding barrel; the rotating shaft is rotationally connected to the machine body, one end of the rotating shaft penetrates into the machining cylinder, the multiple breaking hammers are evenly arranged on the rotating shaft, grinding plates are slidably connected to the multiple breaking hammers, and the distances between the two ends of the multiple grinding plates and the two side walls of the machining cylinder are always kept consistent; the driving assembly is used for driving the machining barrel and the grinding plates to move and driving the rotating shaft to rotate at the same time. When rotating, the crushing hammer performs high-frequency striking on the material to crush a fiber structure; and the processing cylinder slides to drive the grinding cylinder to slide together, so that the crushing hammer repeatedly extrudes and grinds the beaten fiber materials, and the crushing efficiency and thoroughness of the tough materials are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical raw material pretreatment, in particular to a hammer crusher. BACKGROUND

[0002] The hammer crusher is mainly used for crushing processing of pharmaceutical raw materials in the medical field. It can crush roots, stems or tree bark of traditional Chinese medicinal materials and blocky chemical raw materials into fine powder or particles that meet the requirements of pharmaceutical process. It has high crushing efficiency and easy-to-control particle size, which can meet the requirements of subsequent preparation production on the fineness of raw materials, help release of effective components of medicinal materials, and be used for pretreatment of materials in pharmaceutical production to ensure smooth pharmaceutical process and stable pharmaceutical quality.

[0003] Although the hammer crusher in the prior art can process various materials, it is not easy to completely crush the tough material rich in fibers, which causes blockage of the machine and reduces the efficiency. SUMMARY

[0004] In order to improve the crushing efficiency of the hammer crusher on tough materials, the present application provides a hammer crusher.

[0005] The hammer crusher provided by the present application adopts the following technical scheme: A hammer crusher comprises a machine body, wherein a feeding hopper is arranged on the machine body, characterized in that it further comprises a plurality of crushing hammers, a processing cylinder, a rotating shaft and a driving assembly. The processing cylinder is slidably connected to the machine body. The processing cylinder is provided with a feeding pipe and a discharge port. The feeding pipe is communicated with the feeding hopper. A grinding cylinder is detachably connected to the inner wall of the processing cylinder. An inlet is formed in one end of the grinding cylinder facing the feeding pipe, and a plurality of filter holes are formed in one side of the grinding cylinder close to the discharge port. The rotating shaft is rotatably connected to the machine body, and one end of the rotating shaft penetrates into the processing cylinder. The plurality of crushing hammers are uniformly arranged on the circumferential side surface of the rotating shaft. A plurality of grinding plates are slidably connected to the plurality of crushing hammers along the sliding direction of the processing cylinder. The distance between the two ends of the plurality of grinding plates and the side walls of the processing cylinder is always consistent. The driving assembly is used to simultaneously drive the movement of the processing cylinder and the plurality of grinding plates and the rotation of the rotating shaft.

[0006] Through the above technical scheme, the crushing hammer rotates to hit the material at high frequency to preliminarily crush the fiber structure. The processing cylinder slides to drive the grinding cylinder on the inner wall to slide together, so that the crushing hammer repeatedly extrudes and grinds the fiber material after being hit, breaks the tough connection between the fibers, and avoids the fiber winding and accumulation. At the same time, the sliding of the processing cylinder changes the position of the filter hole dynamically to ensure that the fine powder is discharged in time, and improves the crushing efficiency and completeness of the tough material.

[0007] Preferably, the driving assembly comprises a motor, a cam and a sealed bearing, an inner ring of the sealed bearing is fixedly connected to the processing cylinder, a plurality of the grinding plates are respectively installed on an outer ring of the sealed bearing, the cam is rotationally connected to the machine body and a circumferential side thereof is always abutted on the processing cylinder, a first bevel gear is coaxially arranged on the cam, the motor is installed on the machine body, an output shaft of the motor is coaxially and fixedly connected to the rotating shaft, a second bevel gear is coaxially and fixedly connected to the output shaft of the motor, and the first bevel gear is meshingly connected to the second bevel gear.

[0008] By adopting the above technical scheme, the movement of the processing cylinder is completed by the cam, and the sealed bearing has the dual characteristics of "axial rigid connection + radial rotation freedom", which allows the grinding plate to rotate circumferentially with the breaking hammer while realizing the axial synchronous sliding of the processing cylinder and the grinding plate.

[0009] Preferably, the machine body is provided with a mounting cavity, the motor and the cam are located in the mounting cavity, the processing cylinder is provided with a limiting seat, the limiting seat is slidably connected to the machine body and one end thereof penetrates into the mounting cavity, one end of the limiting seat is provided with a wear-resistant block, and the wear-resistant block is abutted on the circumferential side of the cam.

[0010] By adopting the above technical scheme, the motor and the cam are fixed in the mounting cavity of the machine body, the limiting seat on the processing cylinder penetrates through the wall of the mounting cavity and is slidably connected to the machine body through the slide rail. When the cam rotates, the circumferential side thereof is always abutted on the wear-resistant block at the end of the limiting seat, which pushes the limiting seat to drive the processing cylinder to reciprocatingly slide along the slide rail. The closed structure of the mounting cavity blocks the dust in the crushing area from entering the cavity, thereby protecting the motor and the bevel gear; the limiting seat and the slide rail cooperate to ensure the stability of the sliding direction of the processing cylinder, and the wear-resistant block avoids direct friction between the processing cylinder and the cam.

[0011] Preferably, the breaking hammer is provided with a piston cavity, the grinding plate is provided with a piston block, the piston block is slidably connected in the piston cavity, the breaking hammer is provided with a suction hole and a plurality of air outlet holes which communicate with the piston cavity, and the rotating shaft is provided with an air inlet channel, the suction hole is opposite to the air inlet channel when the breaking hammer is installed on the rotating shaft.

[0012] By adopting the above technical scheme, when the grinding plate slides with the processing cylinder, the piston block reciprocatingly moves in the piston cavity, so that the volume of the piston cavity changes and air is sprayed out of the air outlet hole. The sprayed air flow blows away the powder adhered to the breaking hammer or the grinding plate, thereby preventing blockage.

[0013] Preferably, the air inlet end of the air inlet channel is arranged on the circumferential side of the rotating shaft away from the processing cylinder, and the axis of the air inlet end is arranged at an angle with the axis of the rotating shaft, and a guide arc surface inclined to the rotating direction of the rotating shaft is arranged at the air inlet end port; the air inlet channel extends axially along the rotating shaft to the internal region of the processing cylinder, and then communicates with the air extraction holes of the crushing hammers through a plurality of radial branch holes; when the rotating shaft rotates, the guide arc surface guides the external airflow to enter the air inlet channel in the tangential direction, thereby providing a continuous air source for the piston cavity.

[0014] By adopting the above technical scheme, when the rotating shaft rotates, the circumferential side air inlet end generates negative pressure due to centrifugal force. External air enters the air inlet channel in the tangential direction under the action of negative pressure. The airflow flows axially along the air inlet channel to the internal region of the processing cylinder, enters the air extraction holes of the crushing hammers through the radial branch holes, and finally fills the piston cavity, thereby providing a continuous air source for the air jet of the air outlet hole.

[0015] Preferably, an annular clamping groove is arranged on the inner wall of the processing cylinder, a bolt hole is arranged on the annular clamping groove, an annular clamping block adapted to the annular clamping groove is arranged on the outer side of the grinding cylinder, and a positioning bolt is rotatably connected to the annular clamping block; when the grinding cylinder is installed on the processing cylinder, the annular clamping block is clamped and matched with the annular clamping groove, and the positioning bolt is threadedly connected in the bolt hole.

[0016] By adopting the above technical scheme, when the grinding cylinder is worn due to long-term processing of tough materials, the positioning bolts on the side wall of the processing cylinder are unscrewed, the annular clamping block is taken out of the annular clamping groove, and a new grinding cylinder is replaced. Or after disassembly, the grinding cylinder can be thoroughly cleaned of residual materials to avoid cross contamination; different textures of grinding cylinders are replaced according to the characteristics of the materials to ensure the crushing effect.

[0017] Preferably, one end of the feeding pipe is installed on the feeding hopper, the other end of the feeding pipe is provided with a sliding plate, and a sliding groove for the sliding plate to slide is arranged in the processing cylinder; when the processing cylinder slides on the machine body, the sliding plate slides in the sliding groove.

[0018] By adopting the above technical scheme, the sliding plate is always fixedly connected with the feeding port and slides in the sliding groove. The two cooperate closely to prevent material from leaking out and ensure that the material continuously enters the grinding cylinder through the feeding port.

[0019] The technical effects of the present application mainly reflect in the following aspects: 1. The present application preliminarily crushes the fiber structure by high-frequency impact of the crushing hammer when the crushing hammer rotates; the processing cylinder slides to drive the grinding cylinder on the inner wall to slide together, so that the crushing hammer repeatedly extrudes and grinds the fiber material after impact, breaks the toughness connection between fibers, and avoids fiber entanglement and accumulation. At the same time, the dynamic change of the filter hole position is ensured by the sliding of the processing cylinder, so that the fine powder is discharged in time, and the crushing efficiency and completeness of the tough material are improved; 2、The application completes the movement of the processing cylinder through the cam, and has the double characteristics of "axial rigid connection + radial rotation freedom" through the sealing bearing, so that the grinding plate can rotate circumferentially with the breaking hammer while realizing the axial synchronous sliding of the processing cylinder and the grinding plate. 3、When the grinding plate slides with the processing cylinder, the piston block is driven to reciprocate in the piston cavity, so that the volume of the piston cavity changes, and the air is sprayed from the air outlet hole; the sprayed air flow blows away the powder adhered to the breaking hammer or the grinding plate, preventing blockage. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the embodiment of the application.

[0021] Figure 2 is a schematic diagram of the processing cavity structure of the embodiment of the application.

[0022] Figure 3 is a schematic diagram of the installation cavity structure of the embodiment of the application.

[0023] Figure 4 is an enlarged view of A in FIG. Figure 3

[0024] Figure 5 is a schematic diagram of the grinding cylinder structure of the embodiment of the application.

[0025] Figure 6 is a schematic diagram of the processing cylinder structure of the embodiment of the application.

[0026] Figure 7 is a schematic diagram of the grinding plate structure of the embodiment of the application.

[0027] Figure 8 is a schematic diagram of the breaking hammer structure of the embodiment of the application.

[0028] BRIEF DESCRIPTION OF DRAWINGS1, machine body; 2, installation cavity; 3, processing cavity; 4, feeding funnel; 5, discharging channel; 6, processing cylinder; 7, breaking hammer; 8, rotating shaft; 9, driving assembly; 10, limiting seat; 11, opening; 12, window; 13, feeding pipe; 14, discharge port; 15, grinding cylinder; 16, feeding port; 17, filter hole; 18, grinding plate; 19, motor; 20, cam; 21, sealing bearing; 22, wear-resistant block; 23, limiting block; 24, limiting sliding groove; 25, first bevel gear; 26, second bevel gear; 27, piston cavity; 28, piston block; 29, air outlet hole; 30, air outlet hole; 31, air inlet channel; 32, one-way valve; 33, air inlet end; 34, radial branch hole; 35, annular clamping groove; 36, bolt hole; 37, annular clamping block; 38, positioning bolt; 39, sliding plate; 40, sliding groove; 41, controller; 42, sliding rail. DETAILED DESCRIPTION

[0029] The application will be further described in detail below with reference to the accompanying drawings. Figures 1-8 The application will be further described in detail below with reference to the accompanying drawings.

[0030] The application discloses a hammer crusher.

[0031] With reference to Figure 1 and Figure 3 , the hammer crusher comprises a body 1, an installation cavity 2 and a processing cavity 3 are respectively arranged in the body 1, a feeding hopper 4 is fixedly connected to the outer side of the body 1, one end of the feeding hopper 4 penetrates into the processing cavity 3, and a discharging channel 5, which is in communication with the processing cavity 3 and the outside, is further arranged on the body 1.

[0032] With reference to Figure 2 and Figure 5 , the hammer crusher further comprises a processing barrel 6, a plurality of crushing hammers 7, a rotating shaft 8 and a driving assembly 9.

[0033] With reference to Figure 2 and Figure 5 , the processing barrel 6 is slidingly connected in the processing cavity 3 in a horizontal direction, one end of the processing barrel 6 in the axial direction is fixedly connected with a limiting seat 10, the limiting seat 10 is slidingly connected to the body 1, and the other end of the limiting seat 10 penetrates into the installation cavity 2, an opening 11 is arranged on the other end of the processing barrel 6 in the axial direction, and a window 12, which can close the opening 11, is rotatably connected to the processing barrel 6, a feeding pipe 13 is slidingly connected to the upper side wall of the processing barrel 6 in the sliding direction of the processing barrel 6, the feeding pipe 13 is coaxial with the feeding hopper 4 and is in plug-in cooperation with the feeding hopper 4, and the feeding pipe 13 is in communication with the feeding hopper 4, a discharging port 14 is arranged on the lower side wall of the processing barrel 6, the discharging port 14 is in communication with the discharging channel 5, and a grinding barrel 15 is detachably connected to the inner wall of the processing barrel 6 through bolts, a feeding port 16 is arranged on one end of the grinding barrel 15, and a plurality of filter holes 17 are arranged on the side close to the discharging port 14.

[0034] With reference to Figure 5 and Figure 6 , the rotating shaft 8 is coaxial with the processing barrel 6 and is rotatably connected to the body 1, and one end of the rotating shaft 8 penetrates into the processing barrel 6, the plurality of crushing hammers 7 are uniformly arranged on the circumferential side of the rotating shaft 8, and the plurality of crushing hammers 7 are all located in the grinding barrel 15, a plurality of grinding plates 18 are slidingly connected to the plurality of crushing hammers 7 in the sliding direction of the processing barrel 6, and the distance between the two ends of the plurality of grinding plates 18 and the two side walls of the processing barrel 6 is always the same, and the driving assembly 9 is used for simultaneously driving the movement of the processing barrel 6 and the plurality of grinding plates 18 and the rotation of the rotating shaft 8.

[0035] With reference to Figure 2 and Figure 6, the broken hammer 7 rotates to high-frequency impact on the material, and the fiber structure is preliminarily broken; the processing cylinder 6 slides to drive the grinding cylinder 15 on the inner wall to slide together, so that the broken hammer 7 repeatedly extrudes and grinds the fiber material after impact, breaks the tenacity connection between the fibers, and avoids fiber winding and accumulation. At the same time, the sliding of the processing cylinder 6 makes the filter hole 17 position dynamically change, ensures that the fine powder is discharged in time, and improves the crushing efficiency and thoroughness of the tenacity material.

[0036] With reference to Figure 3 and Figure 4 , the drive assembly 9 includes a motor 19, a cam 20 and two sealed bearings 21, the inner rings of the two sealed bearings 21 are fixedly connected on the inner end face of the processing cylinder 6 and the window 12 respectively, and a plurality of grinding plates 18 are installed on the outer rings of the sealed bearings 21; the end of the limiting seat 10 located in the mounting cavity 2 is fixedly connected with a wear-resistant block 22, the wear-resistant block 22 is provided with a limiting block 23, the cam 20 is rotatably connected in the mounting cavity 2, and the circumferential side surface thereof always abuts on the wear-resistant block 22, a limiting sliding groove 24 is formed on the circumferential side surface of the cam 20, the limiting block 23 always slides along the limiting sliding groove 24, a first bevel gear 25 is coaxially and fixedly connected on the cam 20, the motor 19 is installed in the mounting cavity 2, the output shaft of the motor 19 is coaxial and fixedly connected with the rotating shaft 8, and a second bevel gear 26 is coaxially and fixedly connected on the output shaft of the motor 19, and the first bevel gear 25 and the second bevel gear 26 are meshingly connected.

[0037] With reference to Figure 3 and Figure 4 , the movement of the processing cylinder 6 is completed by the cam 20, and the sealed bearing 21 is provided, which has the dual characteristics of "axial rigid connection + radial rotation freedom", which allows the grinding plate 18 to rotate circumferentially with the broken hammer 7 while realizing the axial synchronous sliding of the processing cylinder 6 and the grinding plate 18. The limiting seat 10 on the processing cylinder 6 penetrates through the wall of the mounting cavity 2 and is slidably connected with the machine body 1 through the sliding rail 42. When the cam 20 rotates, the circumferential side surface thereof always abuts on the wear-resistant block 22 at the end of the limiting seat 10, which pushes the limiting seat 10 to drive the processing cylinder 6 to reciprocatingly slide along the sliding rail 42. The cooperation of the limiting seat 10 and the sliding rail 42 ensures the stability of the sliding direction of the processing cylinder 6, and the wear-resistant block 22 avoids direct friction between the processing cylinder 6 and the cam 20.

[0038] With reference to Figure 7 and Figure 8The piston cavity 27 is arranged in the breaking hammer 7, the piston block 28 is fixedly connected to the grinding plate 18, the piston block 28 is slidably connected in the piston cavity 27, the air exhaust hole 29 and the plurality of air outlet holes 30 are arranged in the breaking hammer 7 and communicate with the piston cavity 27, the plurality of air outlet holes 30 are uniformly distributed on the outer wall of the breaking hammer 7, the air inlet channel 31 is arranged on the rotating shaft 8, when the breaking hammer 7 is installed on the rotating shaft 8, the air exhaust hole 29 is opposite to the air inlet channel 31, and the air exhaust hole 29 and the plurality of air outlet holes 30 are respectively provided with the one-way valve 32. When the grinding plate 18 slides with the processing cylinder 6, the piston block 28 reciprocates in the piston cavity 27, the volume of the piston cavity 27 changes, and air is sprayed from the air outlet hole 30. The sprayed air flow blows away the powder adhered to the breaking hammer 7 or the grinding plate 18, preventing clogging.

[0039] With reference to Figure 5 and Figure 6 , the air inlet end 33 of the air inlet channel 31 is arranged on the circumferential side of the end of the rotating shaft 8 away from the processing cylinder 6, and the axis of the air inlet end 33 is arranged at an angle with the axis of the rotating shaft 8, and the air inlet end 33 is provided with a flow guide arc surface inclined to the rotating direction of the rotating shaft 8; the air inlet channel 31 extends axially along the rotating shaft 8 to the internal region of the processing cylinder 6, and then communicates with the air exhaust hole 29 of each breaking hammer 7 through a plurality of radial branch holes 34, when the rotating shaft 8 rotates, the flow guide arc surface guides the external air flow to enter the air inlet channel 31 in the tangential direction, providing a continuous air source for the piston cavity 27.

[0040] With reference to Figure 5 and Figure 6 , when the rotating shaft 8 rotates, the circumferential side air inlet end 33 generates negative pressure due to centrifugal force. Under the action of negative pressure, external air enters the air inlet channel 31 in the tangential direction along the flow guide arc surface. The air flow flows axially along the air inlet channel 31 to the internal region of the processing cylinder 6, enters the air exhaust hole 29 of each breaking hammer 7 through the radial branch hole 34, and finally fills the piston cavity 27, providing a continuous air source for the air outlet hole 30 to spray air flow.

[0041] With reference to Figure 2 and Figure 5 , the inner wall of the processing cylinder 6 is provided with an annular clamping groove 35, the annular clamping groove 35 is provided with a bolt hole 36, the outer side of the grinding cylinder 15 is provided with an annular clamping block 37 matched with the annular clamping groove 35, and the annular clamping block 37 is rotatably connected with a positioning bolt 38, when the grinding cylinder 15 is installed on the processing cylinder 6, the annular clamping block 37 is clamped and matched with the annular clamping groove 35, and the positioning bolt 38 is threadedly connected in the bolt hole 36. When the grinding layer is worn due to long-term processing of tough materials, the positioning bolt 38 on the side wall of the processing cylinder 6 is unscrewed, the annular clamping block 37 is taken out of the annular clamping groove 35, and a new grinding layer is replaced. Or after disassembly, the grinding layer residual material can be completely cleaned, avoiding cross contamination; different textures of grinding layers are replaced according to the characteristics of the material, ensuring the crushing effect.

[0042] With reference to Figure 6 One end of the feeding pipe 13 is coaxially and plug-connected to the feeding hopper 4, and the other end of the feeding pipe 13 is fixedly connected with a sliding plate 39. The processing cylinder 6 is provided with a sliding groove 40 for the sliding plate 39 to slide. When the processing cylinder 6 slides on the machine body 1, the sliding plate 39 slides in the sliding groove 40. The sliding plate 39 is always fixedly connected with the feeding port 16 and slides in the sliding groove 40. The two mating surfaces are tightly fitted to prevent material from leaking out and to ensure that the material continuously enters the grinding cylinder 15 through the feeding port 16.

[0043] With reference to Figure 1 It also comprises a controller 41 for controlling the rotation of the motor 19 and the coordination of the entire device.

[0044] Of course, the above is only a typical example of the present application, and in addition to this, 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 crusher, comprising a body (1), wherein a feed hopper (4) is provided on the body (1), characterized in that: It also includes several breaker hammers (7), a processing cylinder (6), a rotating shaft (8), and a drive assembly (9). The processing cylinder (6) is slidably connected to the machine body (1). The processing cylinder (6) is provided with a feed pipe (13) and a discharge port (14). The feed pipe (13) is connected to a feed funnel (4). A grinding cylinder (15) is detachably connected to the inner wall of the processing cylinder (6). The grinding cylinder (15) has a feed port (16) at one end facing the feed pipe (13) and several filter holes (17) at the side near the discharge port (14). The rotating shaft (8) is rotatably connected to the machine body (1), and one end of it passes through the processing cylinder (6). A plurality of the breaker hammers (7) are evenly arranged on the circumferential side of the rotating shaft (8). A grinding plate (18) is slidably connected to the plurality of breaker hammers (7) along the sliding direction of the processing cylinder (6). The distance between the two ends of the plurality of grinding plates (18) and the two side walls of the processing cylinder (6) is always consistent. The driving assembly (9) is used to simultaneously drive the movement of the processing cylinder (6) and the plurality of grinding plates (18) as well as the rotation of the rotating shaft (8).

2. A hammer crusher according to claim 1, characterized in that: The drive assembly (9) includes a motor (19), a cam (20), and a sealed bearing (21). The inner ring of the sealed bearing (21) is fixedly connected to the processing cylinder (6). Several grinding plates (18) are respectively installed on the outer ring of the sealed bearing (21). The cam (20) is rotatably connected to the machine body (1), and its circumferential side always abuts against the processing cylinder (6). A first bevel gear (25) is coaxially provided on the cam (20). The motor (19) is installed on the machine body (1). The output shaft of the motor (19) is coaxially fixedly connected to the rotating shaft (8). A second bevel gear (26) is coaxially fixedly connected to the output shaft of the motor (19). The first bevel gear (25) and the second bevel gear (26) are meshed.

3. A hammer crusher according to claim 2, characterized in that: The machine body (1) has an installation cavity (2), the motor (19) and the cam (20) are both located in the installation cavity (2), the processing cylinder (6) is provided with a limiting seat (10), the limiting seat (10) is slidably connected to the machine body (1), and one end of it passes through the installation cavity (2). One end of the limiting seat (10) is provided with a wear-resistant block (22), and the wear-resistant block (22) abuts against the circumferential side of the cam (20).

4. A hammer crusher according to claim 1, characterized in that: The breaker (7) has a piston chamber (27) inside, and the grinding plate (18) has a piston block (28) on it. The piston block (28) is slidably connected in the piston chamber (27). The breaker (7) has an air extraction hole (29) and several air outlet holes (30) that communicate with the piston chamber (27). The rotating shaft (8) has an air intake channel (31). When the breaker (7) is installed on the rotating shaft (8), the air extraction hole (29) is connected to the air intake channel (31).

5. A hammer crusher according to claim 4, characterized in that: The air intake end (33) of the air intake channel (31) is located on the circumferential side of the end of the rotating shaft (8) away from the processing cylinder (6), and the axis of the air intake end (33) is set at an angle to the axis of the rotating shaft (8). The port of the air intake end (33) is provided with a guide arc surface that is inclined in the direction of rotation of the rotating shaft (8). After the air intake channel (31) extends axially along the rotating shaft (8) into the internal area of ​​the processing cylinder (6), it is connected to the air extraction holes (29) of each breaker hammer (7) one by one through several radial branch holes (34). When the rotating shaft (8) rotates, the guide arc surface guides the external airflow to enter the air intake channel (31) tangentially, providing a continuous air source for the piston chamber (27).

6. A hammer crusher according to claim 1, characterized in that: The inner wall of the processing cylinder (6) is provided with an annular groove (35), and the annular groove (35) is provided with a bolt hole (36). The outer side of the grinding cylinder (15) is provided with an annular block (37) that is adapted to the annular groove (35), and a positioning bolt (38) is rotatably connected to the annular block (37). When the grinding cylinder (15) is installed on the processing cylinder (6), the annular block (37) is engaged with the annular groove (35), and the positioning bolt (38) is threaded in the bolt hole (36).

7. A hammer crusher according to claim 1, characterized in that: One end of the feed pipe (13) is installed on the feed funnel (4), and the other end of the feed pipe (13) is provided with a sliding plate (39). The processing cylinder (6) is provided with a sliding groove (40) for the sliding plate (39) to slide. When the processing cylinder (6) slides on the machine body (1), the sliding plate (39) slides in the sliding groove (40).

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