Impact crusher with dust removal function for machine-made sand preparation

Abstract

The invention relates to the technical field of impact crushers, and provides a machine-made sand preparation impact crusher with a dust removal function, the machine-made sand preparation impact crusher comprises a rack, a feed port, a discharge port, a front impact frame, a rear impact frame, a crushing mechanism and a dust removal mechanism, the rack is internally provided with a crushing cavity, and the top end and the bottom end of the rack are provided with the feed port and the discharge port respectively; a front impact frame and a rear impact frame are installed on the inner side wall of the crushing cavity, the crushing mechanism is arranged in the crushing cavity and used for impacting and crushing stone, and the dust removal mechanism is arranged on one side of the rack and comprises a box body, a dust collection box, an air partition plate, a negative pressure collection assembly, a filtering assembly and a dust removal assembly. And the dust removal device is used for filtering and cleaning dust generated during stone crushing and regularly carrying out dust removal treatment on the filtering assembly. By means of the technical scheme, the problem that in the prior art, when an impact crusher crushes stone, dust drifts out of equipment and pollutes the environment is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of impact crushers, and in particular to an impact crusher for preparing machine-made sand with a dust removal function. Background Art

[0002] With the continuous exploitation of natural sand resources, natural sand resources in some areas are close to exhaustion, and artificial mechanism sand has begun to be widely used. Mechanism sand is sand processed by sand making machines and other ancillary equipment. It has the characteristics of stable material source, high production efficiency and low processing cost. Moreover, during production, it can be prepared into mechanism sand of different particle sizes and shapes according to process requirements, thereby meeting the needs of various construction projects.

[0003] In the production process of machine-made sand, the coarse crusher is first used to crush the stone, and then the fine crusher is used for further crushing. The fine crushing process usually uses an impact crusher, which mainly uses a high-speed rotating rotor to impact the stone. The stone is then repeatedly impacted and crushed between the impact frame and the rotor until it is processed into the required particle size.

[0004] When the impact crusher is working, a large amount of dust will be generated when the stone repeatedly collides and crushes with the high-speed rotating rotor and the impact liner. This dust will float out from the discharge port and feed port of the equipment, causing serious pollution to the environment and harming the health of on-site workers. Therefore, the present invention proposes an impact crusher for preparing machine-made sand with a dust removal function. Summary of the invention

[0005] The present invention provides an impact crusher for preparing machine-made sand with a dust removal function, which solves the problems of the impact crusher in the related art.

[0006] The technical solution of the present invention is as follows: an impact crusher for preparing machine-made sand with a dust removal function, comprising a frame, a feed port, a discharge port, a front impact frame, a rear impact frame, a crushing mechanism and a dust removal mechanism, a crushing chamber is arranged inside the frame, the feed port and the discharge port are arranged at the top and bottom ends of the frame respectively, the front impact frame and the rear impact frame are installed on the inner side wall of the crushing chamber, the crushing mechanism is arranged in the crushing chamber, and is used for impact crushing stones, and the dust removal mechanism is arranged on one side of the frame, and is used for filtering and cleaning dust generated when stones are crushed.

[0007] Preferably, the crushing mechanism includes a driving device, a rotor frame and a plate hammer, the driving device is installed on one side of the frame, the rotor frame is rotatably connected to the inner side wall of the crushing chamber, one end of the rotor frame is fixedly connected to the output end of the driving device, and a plurality of plate hammers are fixedly installed on the rotor frame.

[0008] Preferably, the dust removal mechanism includes a box body, an air baffle, a negative pressure collection component, a filter component and a cleaning component. The box body is arranged on one side of the frame, and a cavity is arranged inside the box body. The air baffle is fixedly installed inside the box body, and the air baffle divides the cavity into a filter chamber and a clean air chamber. The negative pressure collection component is arranged on one side of the box body to collect dust generated when stones are crushed. The filter component is arranged in the filter chamber to filter the dust-containing gas collected by the negative pressure collection component. The cleaning component is arranged on the top of the filter component to shake off and clean the dust attached to the filter component.

[0009] Preferably, the negative pressure collection assembly includes a mounting frame, an exhaust fan, an air inlet pipe and an air intake pipe, the mounting frame is fixedly connected to the box body, the exhaust fan is installed on the mounting frame, and the exhaust fan is provided with an air inlet and an air outlet, the air inlet is installed on the air inlet, the other end of the air inlet pipe is connected to the clean air chamber, a plurality of the air inlet pipes are installed on the box body, and the two ends of each of the air inlet pipes are respectively connected to the crushing chamber and the filter chamber.

[0010] Preferably, the filter assembly includes a slip ring, a frame and a filter bag, a plurality of ventilation holes are opened on the wind shielding plate, each of the ventilation holes is slidably connected to the slip ring, the bottom end of each slip ring is fixedly connected to the frame, the outer side of each frame is sleeved with the filter bag, and the top end of the filter bag abuts against the bottom end of the slip ring.

[0011] Preferably, the cleaning component includes a motor 1, a rotating shaft, a cam, a connecting column, a movable plate, a pillar and a spring. The motor 1 is fixedly mounted on the box body, the rotating shaft is rotatably connected to the inner wall of the clean air chamber, one end of the rotating shaft is fixedly connected to the output end of the motor 1, a plurality of cams are fixedly mounted on the rotating shaft, a plurality of connecting columns are fixedly connected to the top of each of the slip rings, the movable plate is fixedly connected to the top of a plurality of connecting columns, the top of the movable plate abuts against the bottom ends of a plurality of cams, a plurality of pillars are fixedly connected to the top of the wind baffle plate, a spring is sleeved on the outer side of each pillar, and each spring is mounted between the wind baffle plate and the movable plate.

[0012] Furthermore, a clamp is installed at the bag opening position at the top end of each filter bag.

[0013] Furthermore, a sealing ring is installed on the outer side of each slip ring.

[0014] Furthermore, a side door is installed on the box body.

[0015] Furthermore, a discharge port is provided at the bottom end of the box body, and a dust collecting box is installed on the discharge port.

[0016] The working principle and beneficial effects of the present invention are: 1. In the present invention, when the impact crusher is used to prepare machine-made sand, the rotor frame and the plate hammer are driven to rotate at a high speed by the driving device, and the stone is put into the crushing chamber from the feed port. The stone is hit by the plate hammer for the first crushing, and then it is forced to be thrown to the front impact frame for crushing again. After the collision, the stone rebounds to the plate hammer action area for re-crushing, and then it is thrown to the rear impact frame for crushing again. Through this process, the stone is repeatedly crushed until it is processed into a sand state and discharged from the discharge port.

[0017] 2. In the present invention, in order to clean the dust generated in the process of preparing machine-made sand, a negative pressure is generated by an exhaust fan. Under the action of negative pressure, the dust generated when the stone is crushed is sucked into the filter chamber of the box from the air inlet pipe. The dust-containing gas is filtered by the filter bag, and the dust is left on the filter bag. The purified gas enters the filter bag, and then enters the exhaust fan through the clean air chamber and the air inlet pipe, and is discharged from the air outlet of the exhaust fan. As the filtering time increases, the dust attached to the surface of the filter bag will continue to accumulate, affecting the filtering efficiency of the filter bag. The motor drives the rotating shaft and the cam to rotate, and the moving plate moves back and forth with the rotation of the cam. At the same time, the moving plate squeezes the moving spring, and the spring is periodically compressed and rebounded, thereby generating a periodic vibration force. The moving plate drives the slip ring and the frame to vibrate up and down, and the filter bag shakes with the vibration of the frame, thereby shaking off the dust attached to the surface of the filter bag, and the fallen dust falls from the box into the dust collecting box.

[0018] 3. In the present invention, the stone is crushed by the crushing mechanism. At the same time, the dust generated when the stone is crushed is collected and filtered through the cooperation of the negative pressure collection component and the filter component, so as to avoid the dust from escaping and polluting the surrounding environment, and protect the health of the operators. In addition, the filter bag can be cleaned regularly by the cleaning component to ensure the dust removal effect of the filter component, thereby maintaining high filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Figure 1 It is a schematic diagram of the structure of a partial cross-section of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 It is a structural schematic diagram of another perspective of the present invention as a whole; Figure 4 It is a structural schematic diagram of the crushing mechanism of the present invention; Figure 5It is a structural schematic diagram of the dust removal mechanism of the present invention; Figure 6 This is a schematic diagram of the structure of the wind shield and the filter assembly of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the local enlarged structure at point A in the middle; Figure 8 It is a schematic diagram of the structure of the wind shield, slip ring and dust cleaning assembly of the present invention.

[0021] In the figure: 1, frame; 2, feed inlet; 3, discharge outlet; 4, front impact frame; 5, rear impact frame; 101, driving device; 102, rotor frame; 103, plate hammer; 201, box body; 202, dust collecting box; 203, wind shield; 301, mounting frame; 302, exhaust fan; 303, air inlet pipe; 304, air inlet pipe; 401, slip ring; 402, frame; 403, filter bag; 404, clamp; 405, sealing ring; 501, motor 1; 502, rotating shaft; 503, cam; 504, connecting column; 505, moving plate; 506, support; 507, spring. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figures 1 to 8 As shown, this embodiment proposes an impact crusher for preparing machine-made sand with a dust removal function, including a frame 1, a feed port 2, a discharge port 3, a front impact frame 4, a rear impact frame 5, a crushing mechanism and a dust removal mechanism. A crushing chamber is arranged inside the frame 1, and a feed port 2 and a discharge port 3 are arranged at the top and bottom ends of the frame 1 respectively. Valves are arranged on the feed port 2 and the discharge port 3. The front impact frame 4 and the rear impact frame 5 are installed on the inner side wall of the crushing chamber. The front impact frame 4 and the rear impact frame 5 are made of steel plates, and their function is to make the stone hit the surface of the impact frame and then be crushed again, and bounce the crushed stone back to the impact area of ​​the plate hammer 103. The crushing mechanism is arranged in the crushing chamber, which is used to impact and crush the stone. The dust removal mechanism is arranged on one side of the frame 1, which is used to filter and clean the dust generated when the stone is crushed.

[0024] like Figures 1 to 4As shown, the crushing mechanism includes a driving device 101, a rotor frame 102 and a plate hammer 103. The driving device 101 is installed on one side of the frame 1. The rotor frame 102 is rotatably connected to the inner wall of the crushing chamber. In this embodiment, the driving device 101 includes a motor 2, a driving wheel, a belt and a driven wheel. The driving wheel is fixedly connected to the output end of the motor 2, and the driven wheel is fixedly connected to one end of the rotor frame 102. The belt is sleeved on the driving wheel and the driven wheel. A plurality of plate hammers 103 are fixedly installed on the rotor frame 102. The plate hammers 103 are made of wear-resistant alloy steel and can impact and crush stones.

[0025] like Figure 1 , Figure 2 and Figure 5 As shown, the dust removal mechanism includes a box body 201, a dust box 202, an air baffle 203, a negative pressure collection component, a filter component and a cleaning component. The box body 201 is arranged on one side of the frame 1, and a cavity is arranged inside the box body 201. A discharge port is arranged at the bottom end of the box body 201, and a dust box 202 is sealed and installed on the discharge port for collecting dust shaken off from the filter bag 403. An air baffle 203 is fixedly installed inside the box body 201, and the air baffle 203 divides the cavity into a filter chamber and a clean air chamber. The negative pressure collection component is arranged on one side of the box body 201 for collecting dust generated when stones are crushed. The filter component is arranged in the filter chamber for filtering the dust-containing gas collected by the negative pressure collection component. The cleaning component is arranged on the top of the filter component for shaking off and cleaning the dust attached to the filter component. A side door is installed on the box body 201 to facilitate the disassembly, assembly and replacement of the filter bag 403 in the box body 201.

[0026] like Figure 1 , Figure 2 and Figure 5 As shown, the negative pressure collection assembly includes a mounting frame 301, an exhaust fan 302, an air inlet pipe 303 and an air inlet pipe 304. The mounting frame 301 is fixedly connected to the box body 201, the exhaust fan 302 is installed on the mounting frame 301, and the exhaust fan 302 is provided with an air inlet and an air outlet. The air inlet is installed with an air inlet pipe 303, and the other end of the air inlet pipe 303 is connected to the clean air chamber. A plurality of air inlet pipes 304 are installed on the box body 201, and each air inlet pipe 304 has a The two ends are connected to the crushing chamber and the filter chamber respectively. In this embodiment, when the impact crusher needs to remove dust, the valves on the feed port 2 and the discharge port 3 are closed to form a closed space in the frame 1 and the box body 201. The exhaust fan 302 generates negative pressure when working. Under the action of negative pressure, the dust-containing gas generated when the stone is crushed is sucked into the filter chamber. The clean gas after filtration enters the clean air chamber, and then enters from the air inlet of the exhaust fan 302, and is discharged to the outside from the air outlet.

[0027] like Figure 1 , Figure 6 and Figure 7 As shown, the filter assembly includes a slip ring 401, a frame 402 and a filter bag 403. A plurality of ventilation holes are provided on the wind shield 203. Each ventilation hole is slidably connected to a slip ring 401. The bottom end of each slip ring 401 is fixedly connected to a frame 402. A filter bag 403 is sleeved on the outside of each frame 402. In this embodiment, the frame 402 is made of a plurality of columnar steel bars. The filter bag 403 is a cylindrical cloth bag made of polyester filter cloth. The dust-containing gas filter 402, the dust is blocked on the outer surface of the filter bag 403, and the clean gas enters the inside of the filter bag 403. The top of the filter bag 403 abuts against the bottom of the slip ring 401. A clamp 404 is installed at the bag mouth of the top of each filter bag 403 to fasten the filter bag 403 to the frame 402 to prevent the filter bag 403 from falling off the frame 402 when it shakes. A sealing ring 405 is installed on the outside of each slip ring 401 to prevent the dust-containing gas in the filter chamber from entering the clean air chamber from the ventilation hole.

[0028] like Figure 1 , Figure 5 and Figure 7 As shown, the dust cleaning component includes a motor 501, a rotating shaft 502, a cam 503, a connecting column 504, a movable plate 505, a support 506 and a spring 507. The motor 501 is fixedly installed on the box body 201, and the rotating shaft 502 is rotatably connected to the inner wall of the clean air chamber. One end of the rotating shaft 502 is fixedly connected to the output end of the motor 501. A plurality of cams 503 are fixedly installed on the rotating shaft 502. The top of each slip ring 401 is fixedly connected to a plurality of connecting columns 504, and the top of the plurality of connecting columns 504 is fixedly connected to the movable plate 505. The top of the movable plate 505 abuts against the bottom ends of the plurality of cams 503. The top of the wind baffle plate 203 is fixedly connected to a plurality of support columns 506, and a spring 507 is sleeved on the outer side of each support column 506, and each spring 507 is installed between the wind baffle plate 203 and the movable plate 505.

[0029] In this embodiment, when an impact crusher is used to prepare machine-made sand, motor 2 is started, and motor 2 drives the driving wheel to rotate. The driving wheel drives the driven wheel to rotate through a belt, and the driven wheel drives the rotor frame 102 and the plate hammer 103 to rotate at high speed, and the stone is put into the crushing chamber from the feed port 2. When the stone collides with the plate hammer 103, it is initially crushed, and then it is forced to be thrown onto the front impact frame 4 to impact and crush again. The stone bounces back to the impact area of ​​the plate hammer 103 and is crushed again, and then it is forced to be thrown onto the rear impact frame 5 to be crushed again. Through this process, the stone is repeatedly crushed until it is processed into a sand state.

[0030] In this embodiment, in order to prevent the dust generated during the crushing of stones from drifting out of the equipment, after the stones are put in from the feed port, the valves on the feed port 2 and the discharge port 3 are closed, thereby forming a closed space in the frame 1 and the box body 201, and then the exhaust fan 302 is turned on to generate negative pressure through the exhaust fan 302. Under the action of the negative pressure, the dust generated during the crushing of the stones is sucked into the filter chamber of the box body 201 from the air inlet pipe 304, and the dust-containing gas is filtered by the filter bag 403, and the dust is retained on the filter bag 403. The clean gas after filtration enters the filter bag 403, and then enters from the air inlet of the exhaust fan 302 through the clean air chamber and the air inlet pipe 303, and is discharged to the outside from the air outlet. After the dust removal is completed, the valve at the discharge port is opened, and the machine-made sand is discharged from the discharge port.

[0031] In this embodiment, as the filtering time increases, the dust attached to the surface of the filter bag 403 will continue to accumulate, affecting the filtering efficiency of the filter bag 403, and the motor 501 can be started. The motor 501 drives the rotating shaft 502 and the cam 503 to rotate, and the movable plate 505 moves back and forth as the cam 503 rotates. At the same time, the movable plate 505 squeezes the spring 507 when moving, and the spring 507 performs periodic compression and rebound, thereby generating a periodic vibration force. The movable plate 505 drives the slip ring 401 and the skeleton 402 to vibrate up and down, and the filter bag 403 shakes with the vibration of the skeleton 402, thereby shaking off the dust attached to the surface of the filter bag 403, and the fallen dust falls from the box body 201 into the dust collecting box 202.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An impact crusher for preparing machine-made sand with dust removal function, characterized in that: include: A frame (1), wherein a crushing chamber is provided inside the frame (1); A feed inlet (2) and a discharge outlet (3), wherein the top end and the bottom end of the frame (1) are respectively provided with the feed inlet (2) and the discharge outlet (3); A front impact frame (4) and a rear impact frame (5), wherein the front impact frame (4) and the rear impact frame (5) are mounted on the inner side wall of the crushing chamber; A crushing mechanism, the crushing mechanism is arranged in the crushing chamber and is used for impact crushing the stone; A dust removal mechanism is arranged on one side of the frame (1) and is used to filter and clean dust generated when stones are crushed.

2. The impact crusher for preparing machine-made sand with dust removal function according to claim 1, characterized in that: The crushing mechanism comprises: A driving device (101), wherein the driving device (101) is installed on one side of the frame (1); a rotor frame (102), the rotor frame (102) being rotatably connected to the inner side wall of the crushing chamber, and one end of the rotor frame (102) being fixedly connected to the output end of the driving device (101); Plate hammers (103), a plurality of plate hammers (103) are fixedly mounted on the rotor frame (102).

3. The impact crusher for preparing machine-made sand with dust removal function according to claim 2, characterized in that: The dust removal mechanism comprises: A box body (201), the box body (201) being arranged on one side of the frame (1), and a cavity being arranged inside the box body (201); An air baffle (203), the air baffle (203) being fixedly installed inside the box body (201), the air baffle (203) dividing the cavity into a filter chamber and a clean air chamber; A negative pressure collection component, the negative pressure collection component is arranged on one side of the box body (201) and is used to collect dust generated when stones are crushed; A filter assembly, the filter assembly is arranged in the filter chamber and is used to filter the dust-containing gas collected by the negative pressure collection assembly; A dust cleaning component is arranged on the top of the filter component and is used to shake off and clean the dust attached to the filter component.

4. The impact crusher for preparing machine-made sand with dust removal function according to claim 3, characterized in that: The negative pressure collection component comprises: A mounting frame (301), the mounting frame (301) being fixedly connected to the box body (201); An exhaust fan (302), the exhaust fan (302) being mounted on the mounting frame (301), and the exhaust fan (302) being provided with an air inlet and an air outlet; An air inlet pipe (303), the air inlet being mounted on the air inlet, the other end of the air inlet pipe (303) being in communication with the clean air chamber; An air intake pipe (304), wherein a plurality of the air intake pipes (304) are installed on the box body (201), and both ends of each air intake pipe (304) are respectively connected to the crushing chamber and the filter chamber.

5. The impact crusher for preparing machine-made sand with dust removal function according to claim 4, characterized in that: The filter assembly comprises: A slip ring (401), wherein a plurality of ventilation holes are provided on the wind shielding plate (203), and each of the ventilation holes is slidably connected to the slip ring (401); A frame (402), wherein the bottom end of each of the slip rings (401) is fixedly connected to the frame (402); A filter bag (403), wherein the outer side of each of the skeletons (402) is sleeved with the filter bag (403), and the top end of the filter bag (403) is in contact with the bottom end of the slip ring (401).

6. The impact crusher for preparing machine-made sand with dust removal function according to claim 5, characterized in that: The dust cleaning component comprises: Motor 1 (501), the box body (201) is fixedly mounted with the motor 1 (501); A rotating shaft (502), the rotating shaft (502) being rotatably connected to the inner wall of the clean air chamber, and one end of the rotating shaft (502) being fixedly connected to the output end of the motor 1 (501); Cams (503), a plurality of cams (503) are fixedly mounted on the rotating shaft (502); Connecting columns (504), a plurality of connecting columns (504) being fixedly connected to the top end of each of the slip rings (401); A movable plate (505), the top ends of the plurality of connecting columns (504) being fixedly connected to the movable plate (505), the top ends of the movable plate (505) being in contact with the bottom ends of the plurality of cams (503); Support pillars (506), a plurality of the support pillars (506) being fixedly connected to the top end of the wind shielding plate (203); A spring (507), wherein the outer side of each support (506) is sleeved with the spring (507), and each spring (507) is installed between the wind shielding plate (203) and the movable plate (505).

7. The impact crusher for preparing machine-made sand with dust removal function according to claim 6, characterized in that: A clamp (404) is installed at the bag opening of the top end of each filter bag (403) to fasten the filter bag (403) to the frame (402).

8. The impact crusher for preparing machine-made sand with dust removal function according to claim 7, characterized in that: A sealing ring (405) is installed on the outer side of each slip ring (401).

9. The impact crusher for preparing machine-made sand with dust removal function according to claim 8, characterized in that: A side door is sealedly mounted on the box body (201).

10. The impact crusher for preparing machine-made sand with dust removal function according to claim 9, characterized in that: The bottom end of the box body (201) is provided with a material discharge opening, and a dust collection box (202) is sealed and mounted on the material discharge opening.

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