CN117563703A - A heavy hammer impact crusher that can screen materials - Google Patents

Abstract

The invention discloses a hammer impact crusher capable of screening materials, which comprises: the two side frames are welded with plugging plates at the front and rear positions of the opposite surfaces of the two side frames, and a crushing cavity is formed between the two side frames and the two plugging plates. This but weight impact breaker of screening material has changed traditional driving motor A and has stopped one and move one, one moves one and stop the drive extrusion seat and drive the broken seat of weight and rotate hammering, avoid adopting the broken seat of scram formula drive weight to hammer the material, drive setting through magnetism and make driving motor A under the state of not shutting down, can drive the broken seat of weight constantly and rotate automatic whereabouts after hammering, driving motor A can continue to drive the broken seat of weight and rotate hammering after the whereabouts, with reduce driving motor A's wearing and tearing, control the model protection to driving motor A, with the life of improving driving motor A, reduce cost of maintenance, and, also can improve the frequency of the broken seat of weight to the material striking to a certain extent.

Description

A heavy hammer impact crusher that can screen materials

Technical field

The invention relates to the technical field of crushers, specifically a heavy hammer impact crusher that can screen materials.

Background technique

Crusher is a piece of equipment widely used in various industries. Its function is to break large materials into smaller pieces for transportation, use or further processing. Among various crushers, the hammer impact crusher is widely used in various fields such as mining, building materials, and transportation due to its advantages of high efficiency, durability, and good crushing effect.

When the crusher hammers the material, the motor drives the hammer plate to move and hammer the material. The motor is used as the power source of the hammer plate. When the hammer plate hammers the material, the gap is The material is hammered in a certain way. Therefore, the motor needs to be started and stopped to drive the hammer plate to move. That is, the motor needs to start and stop, and then move and stop to drive the hammer plate to hammer the material. This operation will aggravate the machine's damage. Wear, thereby reducing the service life of the motor, high maintenance costs, and low hammering efficiency.

Contents of the invention

The purpose of the present invention is to provide a hammer impact crusher capable of screening materials, so as to solve the problems raised in the above background technology.

In order to achieve the above objects, the present invention provides the following technical solutions:

A heavy hammer impact crusher that can screen materials, including:

Two side frames, blocking plates are welded at the front and rear positions of the opposite surfaces of the two side frames, and a crushing cavity is formed between the side frames on both sides and the two blocking plates, and the two blocking plates face each other. An extrusion seat is rotatably installed on both sides of the surface, and a heavy hammer crushing seat for hammering the material is detachably installed on the opposite side of the extrusion seat on both sides;

Brackets are welded on both sides of the opposite back sides of the two blocking plates, and a driving source for driving the rotation of the extrusion seat is installed on the bracket;

The screen assembly is installed between the side frames on both sides, and the screen end of the screen assembly is located directly below the extrusion seats on both sides. At the same time, there is a hole through the middle of one side of the side frame for the driving end of the screen assembly to pass through. of connecting ports.

As a further solution of the present invention: an axis hole is drilled through the upper position of the front surface of the extrusion seat, and a circle of magnet blocks is mounted on the inner wall surface of the axis hole at equal intervals. The interior of the extrusion seat is provided with useful A shaft is installed for rotation on the driving extrusion seat, and a ring of electromagnets for magnetic attraction between the magnet blocks is embedded in the outer wall of the installation shaft.

As a further solution of the present invention: the driving source includes a driving motor A installed on the bracket, and the driving end of the driving motor A is fixedly connected with a rotating sleeve connected to the installation shaft.

As a further solution of the present invention: a rotating ring is installed on the outer wall of the driving motor A through bearing rotation, and a power supply is mounted on the outer wall of the rotating ring at equal intervals. The output end of the power supply is connected to the electromagnet. Wires are fixedly arranged between the terminals, and the outer wall of the rotating sleeve is provided with a ring of wire troughs for storing the wires. The outer wall of the rotating sleeve is sleeved with a protective cover for shielding the wires. The protective cover A stabilizing sleeve is installed on the outer wall of the sleeve.

As a further solution of the present invention: the screen assembly includes a U-shaped seat that is limited and slides between the side frames on both sides. Vertical baffles are welded on both sides of the top of the U-shaped seat. The U-shaped seat There is a rectangular cavity running through the top of the vertical baffles on both sides. A set of pedestals A are welded to the opposite surfaces of the vertical baffles on both sides, and the two pedestals A of the same group are installed rotationally. There is a winding shaft, and a screen is installed between the winding shafts on both sides. The drive motor C that drives the winding shaft to rotate is installed on the shaft frame A on the left and right sides. The front and back sides of the inner wall of the rectangular cavity are both A slide is provided, and the four corners of the top of the U-shaped seat are provided with inlet slots connected to the corresponding U-shaped seat. The screen is composed of multiple screens with different mesh sizes connected end to end.

As a further solution of the present invention: a limiting sliding cavity connected to the rectangular cavity is provided in the middle of the bottom of the U-shaped seat, and stopper support plates are slidably installed on both sides of the interior of the limiting sliding cavity. , the right side of the retaining support plate on the left is welded with a clamping strip, and the left side of the right retaining support plate has a clamping groove that is connected to the clamping strip.

As a further solution of the present invention: three U-shaped frames are welded to the bottom of the retaining support plate, a rotating seat A is installed inside the U-shaped frame through rotation of the rotating shaft, and both sides of the inner wall of the U-shaped seat are welded There are three groups of axes B. A rotating base B is installed between the two axes B in the same group through rotation of the rotating shaft. An electric telescopic rod is installed on the outer wall of the rotating base B, and the movable end of the electric telescopic rod is in contact with the rotating The base A is connected, and the shaft frame B is also equipped with a driving motor D for driving the rotating base B to rotate.

As a further solution of the present invention: the screen assembly also includes two motor frames, top bars are welded at the upper positions of the opposite sides of the vertical baffles on both sides, and the motor frame is installed inside the installation cavity. There is a driving motor B. The driving end of the driving motor B is located inside the communication port and is equipped with an eccentric wheel for lifting the top bar.

As a further solution of the present invention: four T-shaped holes A are opened on the lower left side of the outer wall of the extrusion seat, and four T-shaped holes A are opened on the four corners on the left side of the heavy hammer crushing seat. A corresponds to the same T-shaped hole B. An internal thread sleeve is placed inside the T-shaped hole B, and the right end of the internal thread sleeve is welded with an end cap for blocking. The inside of the T-shaped hole A is interspersed with Internal angle screw threaded with internal thread sleeve.

As a further solution of the present invention: a discharging guide inclined plate inclined downward is welded between the opposite surfaces of the two side frames and located on the lower side of the screen part of the screen assembly, and the tops of the two blocking plates are Blocking cover plates for blocking the extrusion seat are welded on both sides, and limit bars for limiting the guide material are welded at the upper positions of the opposite surfaces of the two blocking plates.

Compared with the prior art, the beneficial effects of the present invention are:

1. The driving motor A of the present invention drives the rotating sleeve to rotate, so that the extrusion seats on both sides drive the heavy hammer crushing seat to move to the middle at the same time. The heavy hammer crushing seat will hammer the material. When the heavy hammer crushing seat completes the hammering of the material Finally, turn off the electromagnet to release the magnetic adsorption of the magnet block, and the extrusion seat will fall back due to gravity. During this process, the driving motor A is in a state of always driving the installation shaft to rotate. When the extrusion seat falls back, the electromagnet Turn it on again. When the installation shaft drives the electromagnet to rotate, the electromagnet will be magnetically fixed with the magnet block again, and the extrusion seat will be driven to rotate again. Repeat the above steps in order to hammer the material. It has changed the traditional driving motor A that once stops and moves, and once it moves and stops, it drives the extrusion seat to drive the heavy hammer crushing seat to perform rotating hammering. It avoids using the emergency stop type to drive the heavy hammer crushing seat to hammer the material. The magnetic drive setting makes it possible to When the driving motor A is not stopped, it can always drive the heavy hammer crushing seat to rotate and hammer, and then automatically fall back. After falling back, the driving motor A can continue to drive the heavy hammer crushing seat to rotate and hammer, so as to reduce the wear on the driving motor A. Control model protection of drive motor A to extend the service life of drive motor A and reduce maintenance costs. In addition, to a certain extent, it will also increase the frequency of impact of the heavy hammer crushing seat on materials, thereby improving crushing efficiency.

2. In the present invention, the hammered materials will fall onto the screen, and the screen is in a vibrating state, which is conducive to allowing the materials to pass through the mesh of the screen, so that the crushed materials can be screened. The driving motor C drives the winding shaft. Rotate, and the winding shafts on both sides can rewind or unwind the screen. The different mesh diameter ends of the screen can be moved to just below the heavy hammer crushing seats on both sides. Different meshes can be selected according to different requirements. The screen mesh screens the crushed materials, making it easy to replace the installation shafts with different meshes, which is flexible and convenient.

3. In the present invention, when the material falls, it will directly fall on the two baffle support plates. The baffle support plates support the material to prevent the falling material from directly breaking the screen and ensure the stability of the crusher operation. At the same time, the stopper support plates on both sides are connected together through clip strips and slots, connecting the stopper support plates on both sides together, and improving the stability of the support of the stopper support plates on both sides.

4. When the present invention hammers materials, only the heavy hammer crushing seat will come into contact with the material. The wear rate of the heavy hammer crushing seat is high, while the wear rate of the extrusion seat is low. This setting only requires the heavy hammer crushing seat. You can replace the extrusion seat and hammer crushing seat without replacing them, which avoids waste of resources and reduces maintenance costs.

Description of the drawings

Figure 1 is a schematic structural diagram of a heavy hammer impact crusher that can screen materials;

Figure 2 is a schematic diagram of the internal structure of a heavy hammer impact crusher that can screen materials;

Figure 3 is a schematic structural diagram of the separation state of the extrusion seat and the driving source in a heavy hammer impact crusher that can screen materials;

Figure 4 is a partial structural diagram of the extrusion seat in a heavy hammer impact crusher that can screen materials;

Figure 5 is a schematic diagram of the explosion structure of the driving source in a heavy hammer impact crusher that can screen materials;

Figure 6 is a schematic diagram of the separation structure of the extrusion seat and the heavy hammer crushing seat in a heavy hammer impact crusher that can screen materials;

Figure 7 is a schematic structural diagram of the U-shaped seat (including screen) in a heavy hammer impact crusher that can screen materials;

Figure 8 is a schematic structural diagram of the U-shaped seat in a heavy hammer impact crusher that can screen materials (excluding screen mesh);

Figure 9 is a bottom view of the U-shaped seat in a heavy hammer impact crusher that can screen materials.

In the picture: side frame 1, blocking plate 2, discharge guide ramp 3, communication port 4, screen assembly 5, bracket 6, blocking cover 7, limit bar 8, extrusion seat 9, driving source 10 , Heavy hammer crushing seat 11, shaft hole 12, magnet block 13, electromagnet 14, installation shaft 15, drive motor A16, rotating ring 17, power supply 18, wire 19, rotating sleeve 20, wire trough 21, protective sleeve 22, stable Sleeve 23, inner angle screw 24, T-hole A25, T-hole B26, internal thread sleeve 27, end cover 28, U-shaped base 29, motor frame 30, drive motor B31, eccentric wheel 32, top bar 33, rectangular cavity 34 , screen 35, shaft frame A36, winding shaft 37, drive motor C38, slideway 39, inlet groove 40, limit sliding cavity 41, U-shaped frame 42, material retaining support plate 43, rotating seat A44, electric telescopic rod 45 , shaft frame B46, rotating base B47, drive motor D48, vertical baffle 49.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Please refer to Figures 1 to 9. The present invention proposes a technical solution, a heavy hammer impact crusher that can screen materials, including:

Two side frames 1, two blocking plates 2 are welded at the front and rear positions of the opposite surfaces of the two side frames 1, and a crushing cavity is formed between the side frames 1 on both sides and the two blocking plates 2, and the two blocking plates 2. An extrusion seat 9 is rotatably installed on both sides of the opposite surfaces, and a heavy hammer crushing seat 11 for hammering the material is detachably installed on the opposite sides of the extrusion seats 9 on both sides;

Brackets 6 are welded on both sides of the back sides of the two blocking plates 2, and a driving source 10 for driving the rotation of the extrusion seat 9 is installed on the bracket 6;

The screen assembly 5 is installed between the side frames 1 on both sides, and the screen end of the screen assembly 5 is located directly below the extrusion seats 9 on both sides. At the same time, the middle of one side of the side frame 1 is provided with a hole for the screen. The communication port 4 through which the driving end of component 5 passes.

The upper position of the front of the extrusion seat 9 is penetrated with an axis hole 12. The inner wall of the axis hole 12 is inlaid with a circle of magnet blocks 13 at equal intervals. The interior of the extrusion seat 9 is provided with a structure for driving the extrusion seat 9 to rotate. The mounting shaft 15 has a ring of electromagnets 14 that are magnetically attracted to the magnet block 13 embedded in the outer wall of the mounting shaft 15 .

The driving source 10 includes a driving motor A16 installed on the bracket 6, and round holes are drilled through both sides of the front of the blocking plate 2 for the driving motor A16 to pass through. The driving end of the driving motor A16 is fixedly connected to the mounting shaft 15. Connected rotating sleeve 20.

A rotating ring 17 is mounted on the outer wall of the drive motor A16 through bearing rotation. A power supply 18 is mounted on the outer wall of the rotating ring 17 at equal intervals. A wire 19 is fixed between the output end of the power supply 18 and the terminal of the electromagnet 14 , and the outer wall of the rotating sleeve 20 is provided with a ring of wire grooves 21 for accommodating the conductors 19, and the outer wall of the rotating sleeve 20 is sleeved with a protective sleeve 22 for shielding the conductors 19, and the protective sleeve 22 serves to prevent the rotation. The shielding effect of the wire groove 21 on the sleeve 20 plays a protective role on the conductor 19 to prevent the conductor 19 from being worn and broken to ensure the normal operation of the electromagnet 14. A stabilizing sleeve 23 is installed on the outer wall of the protective sleeve 22, and The stabilizing sleeve 23 is rotatably installed on the blocking plate 2. On the one hand, the stabilizing sleeve 23 plays a protective role for the protective sleeve 22, and on the other hand, it also improves the rotation stability of the installation shaft 15;

It has changed the traditional drive motor A16 that once stops and moves, and once it moves and stops, it drives the extrusion seat 9 to drive the heavy hammer crushing seat 11 to rotate and hammer, avoiding the use of emergency stop type to drive the heavy hammer crushing seat 11 to hammer the material, and uses magnetic suction to The drive setting enables the drive motor A16 to drive the heavy hammer crushing seat 11 to rotate and hammer automatically without stopping. After falling back, the drive motor A16 can continue to drive the heavy hammer crushing seat 11 to rotate and hammer, so as to reduce the impact on the drive. The wear of motor A16 controls the model protection of the drive motor A16 to extend the service life of the drive motor A16 and reduce maintenance costs. Moreover, to a certain extent, it will also increase the frequency of impact of the heavy hammer crushing seat 11 on the material, thereby improving the crushing efficiency. .

The screen assembly 5 includes a U-shaped seat 29 that is limited and slides between the side frames 1 on both sides. Vertical baffles 49 are welded on both sides of the top of the U-shaped seat 29. The top of the U-shaped seat 29 is also located on the vertical baffles on both sides. A rectangular cavity 34 is opened between the baffles 49. A set of axle brackets A36 are welded to the opposite surfaces of the vertical baffles 49 on both sides, and a winding shaft 37 is installed for rotation between the two axle brackets A36 of the same group. The winding axles on both sides are A screen 35 is wound around 37, and a drive motor C38 that drives the winding shaft 37 to rotate is installed on the shaft frame A36 on the left and right sides. A slide 39 is provided on the front and back of the inner wall of the rectangular cavity 34, and is U-shaped. The four corners of the top of the seat 29 are provided with inlet slots 40 connected with the corresponding U-shaped seat 29. A guide channel for the screen 35 to pass through is formed between the two inlet slots 40 on the same side and the slide 39. The guide channel is The setting plays a limiting role on the screen 35, allowing the screen 35 to be in a flat state for screening materials. The screen 35 is composed of multiple screens with different mesh sizes connected end to end, and the winding shaft 37 is driven by the drive motor C38. Rotate, the winding shafts 37 on both sides are retracted and unrolled, and the screen 35 can be rewinded or unrolled. The different mesh diameter ends of the screen 35 can be moved to just below the heavy hammer crushing seats 11 on both sides, according to different requirements. Selecting the screen mesh 35 of different meshes to screen the crushed materials facilitates the replacement of the installation shaft 15 of different meshes, which is flexible and convenient.

There is a limit slide cavity 41 connected with the rectangular cavity 34 in the middle of the bottom of the U-shaped seat 29. There are stopper support plates 43 installed on both sides of the inside of the limit slide cavity 41. The left stopper support plate is The right side of 43 is welded with a clamping strip, and the left side of the right retaining support plate 43 is provided with a slot that is connected to the clamping strip. The retaining support plates 43 on both sides are connected to each other through the clamping strip and the clamping slot. Together, the baffle support plates 43 on both sides are connected together to improve the support stability of the baffle support plates 43 on both sides.

Three U-shaped frames 42 are welded to the bottom of the retaining support plate 43. A rotating base A44 is installed inside the U-shaped frame 42 through a rotating shaft. Three sets of axle frames B46 are welded on both sides of the inner wall of the U-shaped base 29, two in the same group. A rotating base B47 is installed between the axis frames B46 through rotation of the rotating shaft. An electric telescopic rod 45 is installed on the outer wall of the rotating base B47, and the movable end of the electric telescopic rod 45 is connected to the rotating base A44. A useful function is also installed on the axis frame B46. The drive motor D48 rotates the drive rotating base B47.

The screen assembly 5 also includes two motor frames 30, and the two motor frames 30 are welded to the opposite sides of the side frames 1 on both sides, and the vertical baffles 49 on both sides are welded with tops at the upper positions of the opposite sides. 33, and the outer side of the top bar 33 is located inside the communication port 4. A drive motor B31 is installed inside the installation cavity of the motor frame 30. The driving end of the drive motor B31 is located inside the communication port 4 and is equipped with a mounting bracket for aligning the top bar 33. Eccentric wheel 32 for lifting.

There are four T-shaped holes A25 at the lower left side of the outer wall of the extrusion seat 9. The four corners on the left side of the heavy hammer crushing seat 11 are penetrated with T-shaped holes B26 corresponding to the four T-shaped holes A25. T An internally threaded sleeve 27 is placed inside the hole B26, and an end cap 28 for blocking is welded to the right end of the internally threaded sleeve 27. An internal angle screw 24 threadedly connected to the internally threaded sleeve 27 is inserted through the inside of the T-shaped hole A25. , when hammering the material, only the heavy hammer crushing seat 11 will be in contact with the material. The wear rate of the heavy hammer crushing seat 11 is high, while the wear rate of the extrusion seat 9 is low. This setting only requires the heavy hammer The crushing seat 11 can be replaced without replacing the extrusion seat 9 and the hammer crushing seat 11, which avoids waste of resources and reduces maintenance costs.

Between the opposite surfaces of the two side frames 1 and located on the lower side of the screen part of the screen assembly 5, a discharge guide ramp 3 inclined downward is welded. The discharge guide ramp 3 is used to guide and discharge the crushed materials. , both sides of the top of the two blocking plates 2 are welded with blocking cover plates 7 for blocking the extrusion seat 9, and the upper positions of the opposite surfaces of the two blocking plates 2 are welded with guide materials for limiting. The setting of the two limit bars 8, the front and rear limit bars 8, will guide and limit the placed materials to prevent the materials from falling on the sides, so that the materials are more concentrated in the middle position of the opposite surface of the heavy hammer crushing seats 11 on both sides.

The working principle of the present invention is:

When in use, the material is put into the interior of the crushing cavity from the top, and the setting of the two front and rear limit bars 8 will guide and limit the put in material to prevent the material from falling sideways;

The extrusion seats 9 on both sides rotate toward the middle at the same time to drive the heavy hammer crushing seats 11 on both sides to rotate toward the middle, reduce the distance between the heavy hammer crushing seats 11 on both sides, and impact and crush the materials located between the heavy hammer crushing seats 11 on both sides. ;

The impact process of materials by the heavy hammer crushing seats 11 on both sides is as follows:

The driving motor A16 drives the rotating sleeve 20 to rotate, and the rotating sleeve 20 will drive the installation shaft 15 to rotate. Since the electromagnet 14 is in the open state, it will magnetically attract to the magnet block 13, so the rotation of the installation shaft 15 will drive the extruder. The pressing seat 9 rotates. At this time, the pressing seats 9 on both sides simultaneously drive the heavy hammer crushing seat 11 to move to the middle, and the heavy hammer crushing seat 11 will hammer the material;

When the heavy hammer crushing seat 11 completes the hammering of the material, the electromagnet 14 is turned off to release the magnetic adsorption of the magnet block 13, and the extrusion seat 9 will fall back due to gravity. During this process, the driving motor A16 is always driving the installation shaft. 15 in a rotating state;

When the extrusion seat 9 falls back, the electromagnet 14 is turned on again. When the installation shaft 15 drives the electromagnet 14 to rotate, the electromagnet 14 will be magnetically fixed with the magnet block 13 again, and the extrusion seat 9 will be driven again. Rotate and repeat the above steps in order to hammer the material;

The hammered materials will fall onto the screen 35, and the drive motor B31 drives the eccentric 32 to rotate. Under the friction between the eccentric 32 and the top bar 33, the rotation of the eccentric 32 will drive the U-shaped screen through the rectangular cavity 34. The seat 29 moves up and down reciprocally, so that the screen 35 is in a vibrating state, which facilitates the material passing through the mesh of the screen 35 and enables screening of the crushed materials;

When the heavy hammer crushing seat 11 mechanically hammers the material, the drive motor B31 drives the eccentric wheel 32 so that the outermost rotating belt is at the bottom, so that the U-shaped seat 29 is at the lowest height to avoid the heavy hammer crushing seat 11 and the U-shaped seat 29. Surface contact ensures normal rotation of the heavy hammer crushing seat 11;

When the material falls, it will directly fall on the two retaining support plates 43. The retaining support plates 43 support the material to prevent the falling material from directly breaking the screen 35 and ensure the stability of the crusher operation;

The electric telescopic rod 45 shortens and drives the retaining support plate 43 to move sideways. At the same time, the drive motor D48 drives the rotating seat B47 to drive the electric telescopic rod 45 to rotate, rotating the retaining support plate 43 downward and contacting the screen 35 After screening, the materials can fall freely and be discharged through the guidance of the discharging guide inclined plate 3;

The installation process of heavy hammer crushing seat 11 is as follows:

Place the heavy hammer crushing seat 11 at the cutout at the bottom of the extrusion seat 9 so that the T-shaped hole A25 and the T-shaped hole B26 are aligned and connected. Insert the internal thread sleeve 27 into the T-shaped hole B26 first, and insert the internal angle screw 24 into the T. The inside of the hole A25, after passing through the inner angle screw 24, will enter the inside of the internal thread sleeve 27 for threaded connection, so that the hammer crushing seat 11 can be detachably installed on the extrusion seat 9 through threads.

Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. A weight impact crusher capable of screening materials, which is characterized in that: comprising the following steps:

the device comprises two side frames (1), wherein plugging plates (2) are welded at the front and rear positions of opposite surfaces of the two side frames (1), a crushing cavity is formed between the side frames (1) and the two plugging plates (2), an extrusion seat (9) is rotatably arranged between two sides of opposite surfaces of the two plugging plates (2), and a heavy hammer crushing seat (11) for hammering materials is detachably arranged on the facing sides of opposite surfaces of the two side extrusion seats (9);

two sides of the opposite sides of the two plugging plates (2) are welded with brackets (6), and a driving source (10) for driving the extrusion seat (9) to rotate is arranged on each bracket (6);

the screen assembly (5) is arranged between the side frames (1) on two sides, the screen end of the screen assembly (5) is positioned under the extrusion seats (9) on two sides, and meanwhile, the middle part of one side of the side frame (1) is penetrated and provided with a communication port (4) for the driving end of the screen assembly (5) to penetrate through.

2. The hammer impact crusher capable of screening materials according to claim 1, wherein: the extrusion seat (9) is characterized in that a shaft hole (12) is formed in the front upper position of the extrusion seat in a penetrating mode, a circle of magnet blocks (13) are embedded and installed on the inner wall surface of the shaft hole (12) at equal intervals, an electromagnet (14) used for driving the extrusion seat (9) to rotate and installed on the shaft (15) is arranged in the extrusion seat (9), and a circle of electromagnet is embedded and installed on the outer wall surface of the installation shaft (15) and magnetically attracted with the magnet blocks (13).

3. A weight impact crusher for selectable materials as set forth in claim 2 wherein: the driving source (10) comprises a driving motor A (16) arranged on the bracket (6), and a driving end of the driving motor A (16) is fixedly connected with a rotating sleeve (20) connected with the mounting shaft (15).

4. A weight impact crusher for selectable materials as set forth in claim 2 wherein: the outer wall surface of driving motor A (16) is rotated through the bearing and is installed swivel ring (17), the outer wall of swivel ring (17) is equidistant to inlay and installs round power (18), fixedly between the wiring end of the output of power (18) and electro-magnet (14) is provided with wire (19), and the outer wall surface of swivel sleeve (20) has offered round wire casing (21) that are used for accomodating wire (19), the outer wall surface of swivel sleeve (20) has cup jointed and has been used for carrying out protective sheath (22) that shelter from wire (19), stable cover (23) are installed to the outer wall surface of protective sheath (22).

5. The hammer impact crusher capable of screening materials according to claim 1, wherein: the screen assembly (5) comprises U-shaped seats (29) which slide between two side frames (1) in a limiting mode, vertical baffles (49) are welded on two sides of the tops of the U-shaped seats (29), rectangular cavities (34) are formed by penetrating through the tops of the U-shaped seats (29) and the vertical baffles (49) located on the two sides, a group of shaft brackets A (36) are welded on opposite faces of the vertical baffles (49) on the two sides, winding shafts (37) are rotatably installed between the shaft brackets A (36) in the same group, screens (35) are installed between the winding shafts (37) in a winding mode, driving motors C (38) which rotate through the driving winding shafts (37) are installed on the shaft brackets A (36) on the left side and the right side, sliding ways (39) are formed in the front face and the back of the inner wall of the rectangular cavities (34), inlet grooves (40) which are communicated with four corners of the corresponding U-shaped seats (29) are formed in the top of the U-shaped seats, and the screens (35) are formed by connecting a plurality of screen meshes in a tail size.

6. The hammer impact crusher for materials screening according to claim 5, wherein: the middle part of U type seat (29) bottom is offered and is linked together spacing smooth chamber (41) with rectangle chamber (34), the both sides of the inside of spacing smooth chamber (41) are all spacing slidable mounting and are kept off material fagging (43), the left side keep off the right side welding of material fagging (43) has the card strip, the right side keep off the draw-in groove with card strip looks joint has been seted up in the left side of material fagging (43).

7. The hammer impact crusher for materials screening according to claim 6, wherein: the bottom welding that keeps off material fagging (43) has three U type frame (42), the inside of U type frame (42) is rotated through the pivot and is installed roating seat A (44), three group's pedestal B (46) have all been welded to the both sides of U type seat (29) inner wall, with two of group install roating seat B (47) through the pivot rotation between pedestal B (46), install electric telescopic handle (45) on the outer wall of roating seat B (47), and electric telescopic handle (45)'s expansion end is connected with roating seat A (44), still install on pedestal B (46) and be used for driving roating seat B (47) and carry out rotatory driving motor D (48).

8. The hammer impact crusher for materials screening according to claim 7, wherein: the screen assembly (5) further comprises two motor frames (30), the upper positions of the opposite sides of the vertical baffle plates (49) on the two sides are welded with top strips (33), a driving motor B (31) is installed in the installation cavity of the motor frames (30), and the driving end of the driving motor B (31) is located in the communication port (4) and is provided with an eccentric wheel (32) for jacking the top strips (49).

9. The hammer impact crusher capable of screening materials according to claim 1, wherein: four T-shaped holes A (25) are formed in the left side of the outer wall of the extrusion seat (9) at the lower position, T-shaped holes B (26) which are the same as the four T-shaped holes A (25) in correspondence are formed in the four corners of the left side of the heavy hammer crushing seat (11) in a penetrating mode, an inner thread sleeve (27) is arranged in the T-shaped holes B (26), an end cover (28) for blocking is welded at the right side end of the inner thread sleeve (27), and inner angle screws (24) in threaded connection with the inner thread sleeve (27) are arranged in the T-shaped holes A (25) in an penetrating mode.

10. The hammer impact crusher capable of screening materials according to claim 1, wherein: the two opposite faces of the side frames (1) are welded with a downward-inclined discharging guide inclined plate (3) at the lower side of the screen part of the screen assembly (5), two sides of the top of the plugging plate (2) are welded with plugging cover plates (7) for shielding the extrusion seat (9), and two upper positions of the opposite faces of the plugging plate (2) are welded with limiting strips (8) for limiting and guiding materials.