A reversible impact hammer crusher with dust reduction capability

Abstract

This utility model provides a dust-reducing reversible impact hammer crusher, belonging to the field of crusher technology. It includes a hammer crusher and a pulse dust collector. The top of the hammer crusher has a feed inlet, and a feed top shell is installed on top of the feed inlet to prevent dust overflow. A dust collection box is installed at the bottom of the hammer crusher, and a smoke inlet pipe connects the dust collection box to the pulse dust collector. The pulse dust collector collects and purifies the dust generated during the operation of the hammer crusher. A filter screen is installed inside the dust collection box to prevent material from being sucked into the pulse dust collector. This dust-reducing reversible impact hammer crusher, by using a pulse dust collector for dust removal, effectively avoids the mud or wastewater problems caused by traditional water spray dust removal, reducing the risk of secondary pollution at the source and eliminating the need for additional complex wastewater treatment facilities.

Description

Technical Field

[0001] This utility model belongs to the field of crusher technology, specifically relating to a reversible impact hammer crusher with dust reduction capability. Background Technology

[0002] A hammer crusher is a mechanical device that uses high-speed rotating hammers to crush materials. Its technological development can be traced back to the late 19th century. Early hammer crushers had simple structures and low efficiency, mainly used for coarse crushing of ores. In the 1950s, with the application of high-manganese steel hammers, their wear resistance and crushing efficiency were significantly improved. For example, the HS-type hammer crusher developed in Germany had a processing capacity of 200 tons per hour. Since the 21st century, advancements in materials science and manufacturing technology have driven the intelligentization and efficiency of hammer crushers. The introduction of new alloy materials and intelligent control systems has enabled modern equipment to have a crushing capacity exceeding 500 tons per hour, while reducing energy consumption by 20%. Hammer crushers are widely used in building materials, mining, and chemical industries. Their core advantages include a high crushing ratio, uniform product particle size, and simple structure. However, the wear of hammers and grate bars remains a technical challenge. Current technological trends focus on intelligent control, improved environmental performance, and innovation in wear-resistant materials.

[0003] Chinese patent, publication number CN222739292U, discloses a reversible impact hammer crusher with a dust reduction structure. The crusher body’s feed inlet is blocked by a fixed cover and a protective cover set on top of the crusher body to prevent dust from spreading. At the same time, water mist is sprayed into the fixed cover by a nozzle that penetrates through the fixed cover, thereby reducing the amount of dust.

[0004] This device uses water spraying for dust removal. Although water spraying is widely used, it also has several significant drawbacks: the mud or wastewater produced after water spraying contains dust and chemical pollutants, requiring additional treatment facilities; otherwise, it may cause soil or water pollution. Improper treatment may lead to equipment blockage or environmental violations due to water quality deterioration. Water spraying can increase the surface moisture of materials, affecting the quality of finished products. Wet materials are prone to adhering to conveying equipment, accelerating mechanical wear and even causing blockages. Traditional water spraying technology has an efficiency of less than 30% in capturing respirable dust smaller than 5μm, which is the most harmful to the human body and easily forms "floating dust" pollution. Utility Model Content

[0005] To address the problem of secondary pollution easily caused by water spray dust removal in the existing technology, this utility model provides a dust-reducing reversible impact hammer crusher. It employs a dust collection box combined with a pulse dust collector to avoid secondary pollution. The specific technical solution is as follows: A dust-reducing reversible impact hammer crusher includes a hammer crusher and a pulse dust collector. A feed inlet is installed at the top of the hammer crusher, and a feed top shell is installed at the top of the feed inlet to prevent dust overflow. A dust collection box is installed at the bottom of the hammer crusher, and a smoke inlet pipe connects the dust collection box to the pulse dust collector. The pulse dust collector is used to collect and purify the dust generated during the operation of the hammer crusher. A filter screen is installed inside the dust collection box to prevent material from being sucked into the pulse dust collector.

[0006] Preferably, a support frame is installed on one side of the pulse dust collector, and a fan is installed on the top of the support frame. The input end of the fan is connected to the interior of the pulse dust collector.

[0007] Preferably, a first support column is installed at each of the four bottom corners of the dust collector, and a belt conveyor mechanism is installed below the dust collector. The belt conveyor mechanism is installed on the first support column and is used to convey the crushed material.

[0008] Preferably, a recycling bin is placed on one side of the hammer crusher, the recycling bin being located on one side of the belt conveyor mechanism, and the recycling bin being used to receive the crushed material conveyed by the belt conveyor mechanism.

[0009] Preferably, the top of the recycling bin is equipped with an inclined outer shell, the middle of the inclined outer shell is equipped with a discharge plate, and the top of the inclined outer shell is close to the belt conveyor mechanism.

[0010] Preferably, the pulse dust collector is equipped with a top cover, a dust hopper at the bottom, and second support columns at each of the four corners of the bottom. An electromagnetic pulse valve is installed on one side of the pulse dust collector, and the electromagnetic pulse valve is used to control the dust removal action of the filter bags inside the pulse dust collector.

[0011] Preferably, the dust collector has a first discharge port at the top and a second discharge port at the bottom.

[0012] Preferably, a protrusion is installed on the inner wall of the dust collector, the filter screen is installed on the protrusion by bolts, and a connector is installed on the inner wall of the dust collector, the connector is connected to the smoke inlet pipe, and the connector is located inside the filter screen.

[0013] Preferably, the feed top shell includes: a first shell, a rotating baffle and a first connecting flange, the first shell is installed on the top of the feed port, the first shell is connected to the feed port through the first connecting flange, and the rotating baffle is rotatably connected inside the opening of the first shell.

[0014] In addition, the dust-reducing reversible impact hammer crusher in the above-mentioned technical solution provided by this utility model may also have the following additional technical features: the feed top shell includes: a second shell, a baffle and a second connecting flange, the second shell is installed on the top of the feed inlet, the second shell and the feed inlet are connected by the second connecting flange, the baffle is rotatably connected to the top of the second shell, and a sealing strip is installed on the edge of the top opening of the second shell. The sealing strip is used to enhance the sealing between the baffle and the second shell and prevent dust from overflowing from the gaps.

[0015] In the above technical solution, a handle is installed on the top of the cover to facilitate the operator to open or close the cover.

[0016] The dust-reducing reversible impact hammer crusher of this utility model has the following advantages compared with the prior art:

[0017] 1. This dust-reducing reversible impact hammer crusher uses a pulse dust collector to remove dust from the hammer crusher, which can effectively avoid the mud or sewage problems caused by traditional water spray dust removal, reduce the risk of secondary pollution from the source, eliminate the need for additional complex sewage treatment facilities, and reduce the environmental protection cost and management difficulty of equipment operation.

[0018] 2. This reversible impact hammer crusher with dust reduction capability utilizes a pulse dust collector, offering a significant advantage in dust removal efficiency. It achieves over 99% collection efficiency for respirable dust particles smaller than 5μm, far exceeding traditional water spray dust removal technology. This more effectively controls dust emissions, protects operator health, and improves the quality of the working environment. Furthermore, the filter bags of the pulse dust collector can be made of suitable materials, such as polyester fiber and polypropylene, depending on the nature of the dust being processed. These materials offer excellent wear resistance and corrosion resistance, extending the equipment's service life. The highly automated dust removal process enables continuous and stable operation, ensuring the crusher maintains excellent dust removal performance during extended periods of operation and preventing dust accumulation from affecting crushing efficiency. In addition, since no water is added, the material's moisture content remains unchanged, ensuring the stability of the finished product's quality. This avoids wear and blockage problems caused by wet materials adhering to conveying equipment, reducing equipment downtime and improving overall production efficiency.

[0019] 3. This dust-reducing reversible impact hammer crusher adopts a replaceable feed top shell, which is convenient for dealing with different materials that need to be crushed. The feed top shell has a built-in sealing dustproof structure to prevent dust from overflowing from the top. Attached Figure Description

[0020] Figure 1 This is a front view schematic diagram of Embodiment 1 of the reversible impact hammer crusher provided by this utility model;

[0021] Figure 2 A three-dimensional structural schematic diagram of the first embodiment of the feed top shell provided by this utility model;

[0022] Figure 3 A three-dimensional structural diagram of the recycling bin provided by this utility model;

[0023] Figure 4 A cross-sectional schematic diagram of the dust collection box provided by this utility model;

[0024] Figure 5 This is a front view schematic diagram of Embodiment 2 of the reversible impact hammer crusher provided by this utility model;

[0025] Figure 6 A three-dimensional structural schematic diagram of Embodiment 2 of the feed top shell provided by this utility model;

[0026] in, Figures 1 to 6 The reference numerals and component names in the attached drawings are as follows: 1. Hammer crusher, 2. Feed inlet, 3. Feed top shell, 4. Dust collector, 5. Pulse dust collector, 6. Smoke inlet pipe, 7. Support frame, 8. Fan, 9. First support column, 10. Belt conveyor mechanism, 11. Recycling box, 12. Top cover, 13. Ash hopper, 14. Second support column, 15. Electromagnetic pulse valve, 16. Protrusion, 17. Filter screen, 18. Bolt, 19. Connecting piece, 20. First discharge port, 21. Second discharge port, 31. First shell, 32. Rotating baffle, 33. First connecting flange, 34. Second shell, 35. Cover, 36. Sealing strip, 37. Handle, 38. Second connecting flange, 111. Inclined outer shell, 112. Discharge plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] Example 1: Please refer to Figures 1-4A reversible impact hammer crusher with dust reduction capability includes a hammer crusher 1 and a pulse dust collector 5. The dust removal principle of the pulse dust collector 5 is to use compressed air to instantly blow the filter bag, causing the filter bag to expand rapidly and vibrate, peeling off the dust layer attached to the outer surface of the filter bag and causing it to fall into the ash hopper. It has the significant advantage of high dust removal efficiency, with a collection efficiency of over 99% for respirable dust below 5μm, far exceeding that of traditional water spray dust removal technology. It can more effectively control dust emissions, protect the health of operators, and improve the quality of the working environment. At the same time, the filter bag of the pulse dust collector can be made of a suitable material according to the nature of the dust being treated, such as polyester fiber or polypropylene, which has good wear resistance and corrosion resistance, extending the service life of the equipment. Moreover, its dust removal process is highly automated, enabling continuous and stable operation, ensuring that the crusher maintains good dust removal effect during long-term operation and avoiding the impact of dust accumulation on crushing efficiency. In addition, since no water is added, the moisture content of the material is not changed, ensuring the quality stability of the finished product after crushing, avoiding wear and blockage caused by wet material adhering to the conveying equipment, reducing equipment downtime, and improving overall production efficiency; the top of the hammer crusher 1 is welded with a feed inlet 2, and the top of the feed inlet 2 is detachably installed with a feed top shell 3, which is used to prevent dust from overflowing.

[0029] A dust collection box 4 is bolted to the bottom of the hammer crusher 1. A smoke inlet pipe 6 is connected between the dust collection box 4 and the pulse dust collector 5. The pulse dust collector 5 is used to collect and purify the dust generated during the operation of the hammer crusher 1. A filter screen 17 is detachably installed inside the dust collection box 4. The filter screen 17 is used to prevent materials from being sucked into the pulse dust collector 5.

[0030] As a preferred option, a support frame 7 is installed on one side of the pulse dust collector 5 by screws, and a fan 8 is installed on the top of the support frame 7 by bolts. The input end of the fan 8 is connected to the interior of the pulse dust collector 5.

[0031] As a preferred embodiment, the dust collector 4 is further equipped with first support columns 9 at each of its four bottom corners by screws. A belt conveyor mechanism 10 is installed below the dust collector 4. The belt conveyor mechanism 10 is mounted on the first support columns 9 and is used to convey the crushed material. The belt conveyor mechanism 10 includes a drive motor, a drive roller, a driven roller, and a conveyor belt. A horizontal plate is installed on the side wall of the first support column 9. The drive roller and the driven roller are respectively mounted on the horizontal plate of the first support column 9 through bearing seats. The conveyor belt is sleeved on the outside of the drive roller and the driven roller. The drive motor is connected to the drive roller through a coupling. When the drive motor is working, it drives the drive roller to rotate, which in turn drives the conveyor belt and the driven roller to rotate, thereby realizing the conveying of the crushed material.

[0032] As a preferred embodiment, a recovery box 11 is placed on the ground on one side of the hammer crusher 1. The recovery box 11 is located on the output side of the belt conveyor mechanism 10 and is used to receive the crushed material conveyed by the belt conveyor mechanism 10.

[0033] As a preferred embodiment, the top of the recycling bin 11 is further equipped with an inclined outer shell 111, a discharge plate 112 is installed in the middle of the inclined outer shell 111, and the top of the inclined outer shell 111 is close to the output side of the belt conveyor mechanism 10.

[0034] As a preferred option, the pulse dust collector 5 is further equipped with a detachable top cover 12, and a dust hopper 13 is bolted to the bottom of the pulse dust collector 5. Second support columns 14 are bolted to the four corners of the bottom of the pulse dust collector 5. An electromagnetic pulse valve 15 is installed on one side of the pulse dust collector 5. The electromagnetic pulse valve 15 is used to control the dust removal action of the filter bags inside the pulse dust collector. By periodically blowing compressed air, the dust adhering to the surface of the filter bags is shaken off into the dust hopper.

[0035] As a preferred embodiment, the dust collector 4 has a first discharge port 20 at the top and a second discharge port 21 at the bottom, with the second discharge port 21 located above the belt dust collector 5.

[0036] As a preferred embodiment, a protrusion 16 is installed on the inner wall of the dust collector 4. The protrusion 16 is located on one side of the first discharge port 20 and the second discharge port 21. The filter screen 17 is installed on the protrusion 16 by bolts 18. A connector 19 is installed on the inner wall of the dust collector 4. The connector 19 is used to connect with the smoke inlet pipe 6. The connector 19 is located inside the filter screen 17, that is, on the side close to the center of the dust collector 4, to ensure that the dust-laden airflow passes through the filter screen 17 to filter out material particles before entering the smoke inlet pipe 6.

[0037] As a preferred embodiment, the feed top shell 3 further includes: a first shell 31, a rotating baffle 32 and a first connecting flange 33. The first shell 31 is installed on the top of the feed inlet 2. The first shell 31 is connected to the feed inlet 2 through the first connecting flange 33. The rotating baffle 32 is rotatably connected inside the opening of the first shell 31. The rotating baffle 32 closes the opening by naturally rotating under gravity.

[0038] The specific types or circuit structures of the controllers for the electrical components mentioned in this application, as well as the circuit connection relationships between the electrical components and the accurate coordinated control of multiple power components, are all prior art. Therefore, the above content will not be elaborated upon in this application.

[0039] Working principle: All electrical components mentioned in this application are externally connected to a power supply and control switch during use. After installation, first check the installation, fixation, and safety precautions of this utility model before use. During use, the worker puts the part to be crushed into the hammer crusher 1 through the opening of the first housing 31, starts the hammer crusher 1 to crush the part, and starts the blower 8 for dust removal. The dust generated during crushing is drawn into the dust collection box 4 and then into the pulse dust collector under the action of the blower 8. Inside the dust collector 5, coarse material falls into the ash hopper 13 and is discharged outward through the ash discharge valve. Fine material falls onto the surface of the filter bag, allowing clean air to be transported outward by the fan 8. Then, the pulse dust collector 5 starts to work. The electromagnetic pulse valve 15 controls the blower pipe to spray high-pressure air onto the filter bag at regular intervals, shaking the dust adhering to the surface of the filter bag into the ash hopper 13, thus achieving efficient separation and collection of dust. The first shell 31 and the second shell 34 of the feed top shell 3 are fixed by the first connecting flange 33. The rotating baffle 32 can automatically close after the material is discharged, reducing dust diffusion.

[0040] The crushed material falls onto the belt conveyor 10 and then into the recycling bin 11. The inclined outer shell 111 and the discharge plate 112 of the recycling bin 11 guide the material to be collected in a concentrated manner, preventing it from scattering. The inclined angle of the inclined outer shell 111 is set to 30° to 45° so that the material can smoothly slide down to the discharge plate 112 under its own gravity and be discharged into the temporary storage through the top opening of the recycling bin 11 by the guide of the discharge plate 112. At the same time, the design of the inclined outer shell 111 and the discharge plate 112 of the recycling bin 11 can reduce the height of the material falling directly, thereby reducing the generation of dust.

[0041] Example 2: Please refer to Figures 5-6 A dust-reducing reversible impact hammer crusher differs from Embodiment 1 in that the feed top shell 3 includes: a second shell 34, a baffle 35, and a second connecting flange 38. The second shell 34 is installed on the top of the feed inlet 2, and the second shell 34 is connected to the feed inlet 2 via the second connecting flange 38. The baffle 35 is rotatably connected to the top of the second shell 34. A sealing strip 36 is installed on the edge of the top opening of the second shell 34. The sealing strip 36 is used to enhance the sealing between the baffle 35 and the second shell 34 to prevent dust from overflowing from the gaps. A handle 37 is installed on the top of the baffle 35 to facilitate the operator to open or close the baffle 35.

[0042] When it is necessary to crush longer objects, the second housing 34 is installed on the top of the feed inlet 2 through the second connecting flange 38. When feeding, the baffle 35 is opened by the handle 37. After the crushed object is fed from the second housing 34, the baffle 35 is rotatably connected to the second housing 34 through the connecting shaft. After feeding, the handle 37 is released, and the baffle 35 automatically closes under its own gravity, which, together with the sealing strip 36, achieves the sealing of the feed inlet 2, further reducing dust leakage.

[0043] The hammer crusher, pulse dust collector, fan, belt conveyor mechanism, battery pulse valve, connectors and sealing strips in this case are existing technologies. As long as the hammer crusher, pulse dust collector, fan, belt conveyor mechanism, battery pulse valve, connectors and sealing strips meet the requirements of this case, they are acceptable.

[0044] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A reversible impact hammer crusher capable of dust reduction, comprising: A hammer crusher (1) and a pulse dust collector (5) are characterized in that a feed inlet (2) is installed on the top of the hammer crusher (1), and a feed top shell (3) is installed on the top of the feed inlet (2), the feed top shell (3) being used to prevent dust from overflowing. The bottom of the hammer crusher (1) is equipped with a dust collection box (4), and the dust collection box (4) is connected to the pulse dust collector (5) by a smoke inlet pipe (6). The pulse dust collector (5) is used to collect and purify the dust generated during the operation of the hammer crusher (1). A filter screen (17) is installed inside the dust collection box (4), and the filter screen (17) is used to prevent materials from being sucked into the pulse dust collector (5).

2. The dust-reducing reversible impact hammer crusher according to claim 1, characterized in that, A support frame (7) is installed on one side of the pulse dust collector (5), and a fan (8) is installed on the top of the support frame (7). The input end of the fan (8) is connected to the interior of the pulse dust collector (5).

3. The dust-reducing reversible impact hammer crusher according to claim 1, characterized in that, The dust collector (4) has four first support columns (9) installed at the bottom corners. A belt conveyor (10) is installed below the dust collector (4). The belt conveyor (10) is installed on the first support columns (9) and is used to convey the crushed material.

4. The dust-reducing reversible impact hammer crusher according to claim 3, characterized in that, A recycling bin (11) is placed on one side of the hammer crusher (1). The recycling bin (11) is located on one side of the belt conveyor mechanism (10). The recycling bin (11) is used to receive crushed materials conveyed by the belt conveyor mechanism (10).

5. The dust-reducing reversible impact hammer crusher according to claim 4, characterized in that, The top of the recycling bin (11) is equipped with an inclined outer shell (111), and a feeding plate (112) is installed in the middle of the inclined outer shell (111). The top of the inclined outer shell (111) is close to the belt conveyor mechanism (10).

6. The dust-reducing reversible impact hammer crusher according to claim 1, characterized in that, The pulse dust collector (5) is equipped with a top cover (12) on the top, a dust hopper (13) on the bottom of the pulse dust collector (5), and a second support column (14) at each of the four corners of the bottom of the pulse dust collector (5). An electromagnetic pulse valve (15) is installed on one side of the pulse dust collector (5), and the electromagnetic pulse valve (15) is used to control the dust removal action of the filter bag inside the pulse dust collector.

7. The dust-reducing reversible impact hammer crusher according to claim 1, characterized in that, The dust collector (4) has a first discharge port (20) at the top and a second discharge port (21) at the bottom.

8. The dust-reducing reversible impact hammer crusher according to claim 1, characterized in that, The dust collector (4) has a protrusion (16) installed on its inner wall. The filter screen (17) is installed on the protrusion (16) by bolts (18). The dust collector (4) has a connector (19) installed on its inner wall. The connector (19) is connected to the smoke inlet pipe (6). The connector (19) is located inside the filter screen (17).

9. The dust-reducing reversible impact hammer crusher according to claim 1, characterized in that, The feed top shell (3) includes: a first shell (31), a rotating baffle (32) and a first connecting flange (33). The first shell (31) is installed on the top of the feed port (2). The first shell (31) and the feed port (2) are connected by the first connecting flange (33). The rotating baffle (32) is rotatably connected inside the opening of the first shell (31).

10. The dust-reducing reversible impact hammer crusher according to claim 1, characterized in that, The feed top shell (3) includes: a second shell (34), a baffle (35), and a second connecting flange (38). The second shell (34) is installed on the top of the feed inlet (2). The second shell (34) is connected to the feed inlet (2) through the second connecting flange (38). The baffle (35) is rotatably connected to the top of the second shell (34). A sealing strip (36) is installed on the edge of the top opening of the second shell (34). The sealing strip (36) is used to enhance the sealing between the baffle (35) and the second shell (34) to prevent dust from overflowing from the gaps. A handle (37) is installed on the top of the baffle (35) to facilitate the operator to open or close the baffle (35).

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