Anti-splashing mine jaw crusher

Abstract

The invention belongs to the technical field of jaw crushers, and particularly relates to an anti-splashing mining jaw crusher which comprises a crusher body, a feeding port is formed in the top of the crusher body and used for feeding of materials, and a fixed crushing plate I and a movable crushing plate II are arranged in the feeding port and used for feeding of the materials. The crusher main body is used for crushing ores when the crushing plate II moves towards the crushing plate I, and a transmission roller is mounted at the top of the crusher main body; through the synergistic effect of the air inlet part and the feeding system, efficient dust prevention in the crushing operation process is achieved. Specifically, airflow generated by the exhaust fan body forms a directional air curtain through the air spraying head, and the dust generation amount can be reduced; meanwhile, the linkage-designed transmission part enables the dust removal system to be automatically started and stopped along with feeding, and compared with a traditional fixed dust removal device, energy is saved. And the staggered layout of the material guide plates is matched with the pre-crushing function of the crushing head, so that the feeding dust concentration is effectively reduced, and dust and crushed stones are prevented from splashing.

Description

Technical Field

[0001] This invention relates to the field of jaw crusher technology, and more particularly to a splash-proof jaw crusher for mining. Background Technology

[0002] In mining and ore processing, jaw crushers serve as crucial primary crushing equipment, and their performance directly impacts subsequent production efficiency and the working environment. However, traditional jaw crushers still face the following technical challenges in practical application: During the feeding and crushing process, existing jaw crushers generate a large amount of dust as the ore falls at high speed and collides with the crushing chamber. Traditional dust collection devices are mostly independent external systems, which are energy-intensive and have limited dust collection efficiency, making it difficult to effectively control dust diffusion at the feed inlet. Especially when processing dry or powdery ores, the dust concentration often exceeds occupational health standards, seriously affecting the working environment and the health of operators.

[0003] When large pieces of ore fall directly into the crushing chamber, the large drop and strong impact force can easily cause fragments to fly everywhere, posing a safety hazard. At the same time, highly viscous or moist ores tend to accumulate in the feed hopper, causing blockages and requiring frequent shutdowns for cleaning, severely impacting production efficiency. While existing technologies use auxiliary equipment such as vibrating feeders to alleviate these problems, they increase energy consumption and equipment complexity.

[0004] The direct impact of ore on the crushing plates and feed structure accelerates the wear of critical components such as jaw plates and guide plates. Traditional buffering measures (such as fixed liners) have limited effectiveness, leading to shortened equipment lifespan and high maintenance costs. Furthermore, when the crusher stops, dust within the crushing chamber can easily escape back through the feed inlet, contaminating the feeding system and further increasing the cleaning burden.

[0005] The high-frequency impacts during ore falling and crushing generate significant noise, while traditional anti-splash designs (such as adding enclosed hoods) often sacrifice feeding efficiency. Existing dust removal systems mostly operate continuously, out of sync with the crushing operation, resulting in energy waste. Summary of the Invention

[0006] To address the aforementioned problems, this invention proposes a splash-proof jaw crusher for mining, which more precisely solves the problems mentioned in the background art.

[0007] This invention is achieved through the following technical solution: This invention proposes a splash-proof jaw crusher for mining, comprising a crusher body with a feed inlet at the top for material entry. A fixed crushing plate (first) and a movable crushing plate (second) are installed within the feed inlet for crushing the ore as the second crushing plate moves towards the first crushing plate. A drive roller is mounted on the top of the crusher body to move the second crushing plate. A motor is located on one side of the crusher body to drive the rotation of the drive roller. A feeding box is mounted on the top of the crusher body, and a feed hopper is mounted on the top of the feeding box. The feed hopper is used for the entry of ore. A feeding section is installed inside the feed hopper to clear the material. Multiple guide plates are staggered on the inner wall of the feeding box. The guide plates are used to decelerate and guide the material and to shield the dust inside the feeding box. A pad is installed on the bottom wall of the feeding box at the bottom of the last guide plate. Multiple crushing heads are installed on the top of the pad. The crushing heads are used to perform preliminary crushing of the ore falling from the guide plates. A feeding chute is opened at the bottom of the feeding box. The feeding chute is connected to the crushing plate at one point to send the ore into the crusher body.

[0008] Preferably, the back of the feeding box is provided with an air inlet, which is used to draw air to the connection between the feeding hopper and the feeding box and spray it out to prevent dust inside the feeding box from being stirred up again.

[0009] Preferably, the air inlet includes a mounting plate installed on the back of the feeding box. A fan body is mounted on the top of the mounting plate. A fan rotating head is mounted on the front surface of the fan body. An air collecting hood is mounted on the back of the fan body. The fan rotating head is used to drive the fan body to rotate, and to draw outside air into the air collecting hood after the fan body rotates. An air guide pipe is mounted on the surface of the air collecting hood, and an air jet is mounted on the surface of the air guide pipe. The air jet is inserted into the feeding hopper and is used to transport the air collected at the air collecting hood to the air jet and spray it out, so as to prevent dust from flying out from the feeding hopper.

[0010] Preferably, the feeding section includes a long rod installed on the inner wall of the feed hopper and extending to the back of the feed box. The surface of the long rod is equipped with a plurality of arc-shaped plates, which are used to guide the ore downward as it enters and to drive the rotation of the long rod.

[0011] Preferably, a transmission unit is installed on the back of the feeding box. The transmission unit is used to drive the rotation of the exhaust fan head when the long rod rotates, thereby driving the rotation of the exhaust fan body.

[0012] Preferably, the transmission unit includes a rotating rod one installed on the back of the feeding box, a belt connecting the rotating rod one and a long rod for driving the rotating rod one to rotate when the long rod rotates, a large gear plate being installed on the surface of the rotating rod one, and a rotating rod two being installed on the back of the feeding box at the exhaust fan rotating head, the end of the rotating rod two being connected to the exhaust fan rotating head, a small gear plate being installed on the surface of the rotating rod two, the small gear plate meshing with the large gear plate for driving the rotating rod two to rotate when the rotating rod one rotates.

[0013] Preferably, the crusher body is provided with a dust-blocking part at the junction of the feeding chute and the feed inlet. The dust-blocking part is used to seal the crusher body and prevent dust from the crusher body from entering the feeding box when not in use.

[0014] Preferably, the dust-blocking part includes an installation strip installed on the top wall inside the crusher body, a rotatable dust baffle plate installed on the inner wall of the feed inlet, and a return spring installed between the installation strip and the dust baffle plate. The return spring is used to return the dust baffle plate to a state parallel to the feed inlet for sealing the feed inlet.

[0015] Preferably, an installation groove is provided at the uppermost guide plate, the installation groove is located below the feed hopper, and a buffer part is installed in the installation groove to buffer the ore after it falls.

[0016] Preferably, the buffer section includes a rolling roller installed on the inner wall of the mounting groove and rotatably connected thereto via a bearing, and the surface of the rolling roller is fitted with a rubber sleeve.

[0017] Compared with the prior art, the present invention provides a splash-proof jaw crusher for mining, which has the following beneficial effects: This anti-splash mining jaw crusher achieves highly efficient dust control during crushing operations through the coordinated action of the air intake and feeding system. Specifically, the airflow generated by the exhaust fan forms a directional air curtain through the jet nozzles, reducing dust generation; simultaneously, the linked transmission system automatically starts and stops the dust collection system with the feeding, saving energy compared to traditional fixed dust collection devices. The staggered layout of the guide plates, combined with the pre-crushing function of the crushing head, effectively reduces the dust concentration of the feed and prevents the splashing of dust and gravel.

[0018] This anti-splash mining jaw crusher improves the throughput of sticky and wet materials by using a long rod rotating mechanism driven by the weight of the ore. Secondly, the dynamic unblocking effect extends the continuous working time of the equipment by more than double. Furthermore, the stepped buffer channel formed with the guide plate effectively ensures the impact of the ore entering the crusher body and avoids the ore splashing due to collision and reaction force when falling.

[0019] This anti-splash mining jaw crusher reduces reverse dust pollution through the spring-reset dust baffle in the dust baffle section; the rubber sleeve in the buffer section reduces the impact noise of the guide plate; and the pre-crushing function of the crushing head reduces the wear rate of the jaw plate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a splash-proof mining jaw crusher proposed in this invention; Figure 2 This is a schematic diagram of the structure of a splash-proof feeding box for a mining jaw crusher proposed in this invention; Figure 3 This is a side view of the structure of a splash-proof feeding box for a mining jaw crusher proposed in this invention; Figure 4 This is a top view of the structure of a splash-proof feeding box for a mining jaw crusher proposed in this invention; Figure 5 This is a cross-sectional view of the structure of a splash-proof feeding box for a mining jaw crusher proposed in this invention; Figure 6 This is a front sectional view of the structure of a splash-proof feeding box for a mining jaw crusher proposed in this invention; Figure 7 This is a schematic diagram of the structure of a splash-proof feed hopper for a mining jaw crusher proposed in this invention; Figure 8 This is a schematic diagram of the feeding section of a mining jaw crusher with anti-splashing properties, as proposed in this invention. Figure 9 This invention proposes a splash-proof jaw crusher for mining. Figure 6 Enlarged view of region A in the middle; Figure 10 This invention proposes a splash-proof jaw crusher for mining. Figure 4 Enlarged schematic diagram of region B in the middle.

[0021] In the diagram: 100, main body of the crusher; 101, feed inlet; 102, crushing plate one; 103, crushing plate two; 104, drive roller; 105, motor; 1. Feeding box; 11. Feeding trough; 2. Feeding hopper; 3. Feeding section; 31. Long rod; 32. Arc plate; 4. Guide plate; 41. Mounting groove; 5. Pad plate; 51. Crushing head; 6. Dustproof section; 61. Mounting strip; 62. Return spring; 63. Dust baffle plate; 7. Air inlet; 71. Mounting plate; 72. Main body of exhaust fan; 73. Exhaust fan rotating head; 74. Air collection hood; 75. Air guide pipe; 76. Jet nozzle; 8. Transmission section; 81. Rotating rod one; 82. Belt component; 83. Large gear plate; 84. Rotating rod two; 85. Small gear plate; 9. Buffer section; 91. Rolling roller; 92. Rubber sleeve. Detailed Implementation

[0022] To more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings. Example

[0023] like Figures 1-10 As shown in the figure, an anti-splash mining jaw crusher according to one embodiment of the present invention includes a crusher body 100, with a feed inlet 101 at the top. A fixed crushing plate 102 and a movable crushing plate 103 are installed inside the feed inlet 101 for ore crushing. A transmission roller 104 is installed at the top of the crusher body 100, driven by a motor 105, which moves the crushing plate 103. A feeding box 1 is added to the top of the crusher body 100, with a feed hopper 2 connected to the top of the feeding box 1. A feeding section 3 is provided inside the feeding box 1 for clearing the ore. Multiple guide plates 4 are arranged alternately on the inner wall of the feeding box 1 to slow down the ore's falling speed and block dust. A pad 5 is provided at the bottom of the lowest guide plate 4, and multiple crushing heads 51 are installed on the pad 5 for pre-crushing the ore. A feeding chute 11 is opened at the bottom of the feeding box 1, which is connected to the crushing plate 102 to feed the ore into the crusher body 100. After the ore enters from the feed hopper 2, the unblocking function of the feeding section 3 can prevent large pieces of ore from accumulating and clogging, ensuring that the material falls evenly. The guide plate 4 adopts a staggered layout, so that the ore collides and slows down continuously during free fall, reducing dust caused by high-speed impact. At the same time, the tilt angle of the guide plate 4 can guide the ore to slide along a specific path, avoiding direct impact on the crusher feed inlet 101 and reducing the risk of splashing. The crushing head 51 on the pad plate 5 performs preliminary crushing of the ore, reducing the load on the subsequent jaw crusher and improving the overall crushing efficiency. The feeding chute 11 is precisely connected to the crushing plate 102 to ensure that the ore enters the crushing chamber smoothly and avoids material scattering due to excessive drop. The feeding section 3 and the guide plate 4 optimize the ore flow and prevent poor feeding. The setting of the crushing head 51 reduces the initial crushing pressure of the jaw crusher and extends the service life of the equipment. The precise guidance of the feed chute 11 prevents the ore from impacting the crushing chamber at high speed.

[0024] In this invention, an air inlet 7 is provided on the back of the feeding box 1, including a blower body 72, an air collecting hood 74, and an air guide pipe 75. The blower body 72 sprays air through a jet nozzle 76 to the connection between the feeding hopper 2 and the feeding box 1, forming an airflow barrier to prevent dust from being blown back. The air inlet 7 draws in air from the outside through the blower body 72, and delivers it to the jet nozzle 76 through the air collecting hood 74 and the air guide pipe 75. The jet nozzle 76 is located at the connection between the feeding hopper 2 and the feeding box 1, forming a downward airflow barrier. When the ore falls, the airflow can suppress the dust from rising, and at the same time guide fine particles to settle into the crusher instead of spreading outward.

[0025] In this invention, the air inlet 7 specifically comprises a blower body 72 fixed to a mounting plate 71, with a blower rotating head 73 at its front and an air collection hood 74 connected to its back. An air guide pipe 75 delivers air from the air collection hood 74 to a jet nozzle 76, which is inserted into the feed hopper 2 and sprays air downwards. The blower body 72 is driven by the blower rotating head 73, efficiently collects air through the air collection hood 74, and delivers it to the jet nozzle 76 via the air guide pipe 75. The jet nozzle 76 uses a narrow-slit or diffuser nozzle to ensure that the airflow evenly covers the inlet of the feed hopper 2, forming a stable air curtain. This design not only suppresses dust but also creates a slight negative pressure within the feed hopper 2, further preventing dust overflow.

[0026] In this invention, the feeding unit 3 includes a long rod 31 that penetrates the feed hopper 2, with multiple arc-shaped plates 32 on its surface. When ore enters, it pushes the arc-shaped plates 32, causing the long rod 31 to rotate and promoting the ore's descent. The arc-shaped plates 32 on the long rod 31 rotate under the influence of the ore's gravity, pushing the material to fall evenly. When large pieces of ore become stuck, the rotation of the arc-shaped plates 32 can apply mechanical disturbance, helping the material to pass smoothly. This structure requires no additional power, relying entirely on the ore's own weight for propulsion, making it energy-efficient and reliable, preventing clogging of the feed hopper 2, and reducing manual intervention.

[0027] In this invention, a transmission unit 8 is provided on the back of the feeding box 1. The rotation of the long rod 31 drives the exhaust fan rotating head 73, which in turn drives the exhaust fan body 72 to work. The rotation of the long rod 31 is transmitted to the exhaust fan rotating head 73 through the transmission unit 8, realizing the linkage between ore conveying and dust removal. When ore enters the feed hopper 2, the feeding unit 3 rotates automatically, simultaneously driving the exhaust fan to run, forming a dynamic dust prevention system.

[0028] In this invention, the transmission unit 8 includes a rotating rod 81 and a long rod 31 linked by a belt 82. A large gear 83 on the rotating rod 81 meshes with a small gear 85 on the rotating rod 84. The rotating rod 84 is connected to the exhaust fan rotating head 73. The belt 82 transmits the rotation of the long rod 31 to the rotating rod 81, and then the meshing of the large gear 83 and the small gear 85 drives the rotating rod 84, ultimately driving the exhaust fan rotating head 73. The gear ratio is adjustable to optimize the exhaust fan speed and ensure that the airflow intensity matches the feed rate.

[0029] In this invention, the crusher body 100 is provided with a dust-blocking part 6 at the connection between the feeding chute 11 and the feed inlet 101, including a mounting strip 61 and a rotatable dust-blocking plate 63, with a return spring 62 between them. When the machine stops, the dust-blocking plate 63 returns to its original position and closes the feed inlet 101. When there is no material, the dust-blocking plate 63 of the dust-blocking part 6 is pulled back by the return spring 62 to close the feed inlet 101, preventing dust inside the crusher from rushing back into the feeding box 1. When the ore falls, the material pushes open the dust-blocking plate 63, and it automatically returns to its original position after crushing is completed.

[0030] In this invention, in the specific structure of the dust-blocking part 6, the dust-blocking plate 63 is kept in a horizontal closed state by a return spring 62. The dust-blocking plate 63 is pushed open when ore falls and automatically resets when there is no material. The dust-blocking plate 63 is made of wear-resistant steel, and the return spring 62 provides stable elasticity to ensure no deformation during long-term use. When ore passes through, the dust-blocking plate 63 briefly opens and then quickly closes, forming a "one-way valve" effect.

[0031] In this invention, a buffer section 9 is provided in the mounting groove 41 of the uppermost guide plate 4, including a rolling roller 91 and a surface rubber sleeve 92, for reducing the impact of ore. The rolling roller 91 of the buffer section 9 can rotate freely, and the rubber sleeve 92 absorbs the impact energy of the ore, reducing noise and vibration. After the ore hits the rubber sleeve 92, the rolling roller 91 drives it to roll and disperse, avoiding concentrated impact.

[0032] In this invention, the rolling roller 91 of the buffer section 9 rotates via bearings, and the rubber sleeve 92 provides elastic cushioning. When the ore falls, it impacts the rubber sleeve 92 and rolls and disperses. The rubber sleeve 92 is made of highly elastic and wear-resistant rubber and is replaceable. The rolling roller 91 achieves low-friction rotation via bearings, ensuring long-term stable operation.

[0033] The workflow of this invention is as follows: Ore enters the crusher system through the feed hopper 2. When the ore falls into the feed hopper: the arc-shaped plate 32 of the feeding section 3 begins to rotate under the gravity of the ore, pushing the material to fall evenly. The rubber sleeve 92 and rolling roller 91 of the uppermost buffer section 9 absorb the initial impact energy of the ore, reducing noise and vibration. The rotation of the long rod 31 drives the exhaust fan body 72 to start working through the transmission section 8. After the ore enters the feeding box 1: the staggered guide plates 4 cause the ore to fall in a zigzag path, effectively reducing the falling speed. The crushing head 51 on the pad plate 5 performs preliminary crushing of the ore, reducing the subsequent crushing load. The airflow generated by the exhaust fan body 72 forms a downward air curtain through the jet head 76, suppressing dust from rising. After deceleration and pre-crushing, the ore: passes through The feed chute 11 smoothly enters the crusher body 100. The dust baffle 63 of the dust baffle 6 is pushed open by the ore, allowing the material to pass through. The feed chute 11 is precisely aligned with the first crushing plate 102 to ensure that the ore enters the crushing chamber at the optimal angle. Inside the crusher body 100: the motor 105 drives the transmission roller 104, which drives the second movable crushing plate 103 to make periodic movements. The ore is squeezed and crushed between the fixed first crushing plate 102 and the second movable crushing plate 103. The crushed material is discharged from the lower discharge port. The air inlet 7 works continuously to maintain the negative pressure state of the feeding area. The dust baffle 63 automatically resets when no material passes through to prevent dust backflow. Each guide plate 4 continuously blocks and guides the material to reduce splashing.

[0034] Finally, it should be noted that the basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this specification. Such modifications, improvements, and corrections are suggested in this specification, and therefore remain within the spirit and scope of the exemplary embodiments of this specification. Furthermore, this specification uses specific terms to describe embodiments of this specification. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this specification can be appropriately combined. Moreover, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this specification are not intended to limit the order of the processes and methods of this specification.

[0035] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. 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 described 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 should be included within the protection scope of the present invention.

Claims

1. A splash-proof mining jaw crusher, comprising a crusher body (100), a feed inlet (101) is opened at the top of the crusher body (100) for the entry of materials, a fixed crushing plate one (102) and a movable crushing plate two (103) are arranged in the feed inlet (101), for crushing the ore when the crushing plate two (103) moves to the crushing plate one (102), a transmission roller (104) is installed at the top of the crusher body (100), the transmission roller (104) is used to drive the movement of the crushing plate two (103), a motor (105) is arranged on one side of the crusher body (100), the motor (105) is used to drive the rotation of the transmission roller (104), characterized in that, The top of the crusher body (100) is provided with a feeding box (1), the top of the feeding box (1) is provided with a feeding hopper (2), the feeding hopper (2) is used for the entry of ore, the feeding hopper (2) is provided with a feeding part (3), the feeding part (3) is used for the dredging of materials, a plurality of guide plates (4) are arranged at the inner wall of the feeding box (1), the guide plates (4) are used for the speed reduction and guidance of materials and the shielding of dust in the feeding box (1), the inner bottom wall of the feeding box (1) is provided with a pad (5) at the bottom of the last guide plate (4), the top of the pad (5) is provided with a plurality of crushing heads (51), the crushing heads (51) are used for the preliminary crushing of the ore falling at the guide plate (4), the bottom of the feeding box (1) is provided with a feeding groove (11), the feeding groove (11) is communicated with the crushing plate (102), and the feeding groove (11) is used for sending ore into the crusher body (100).

2. A mine-duty jaw crusher with anti-splatter according to claim 1, characterized in that, The back of the feeding box (1) is provided with an air inlet part (7), the air inlet part (7) is used for extracting air to be sprayed at the connection between the feeding hopper (2) and the feeding box (1), so as to prevent the dust in the feeding box (1) from flying back.

3. A mine-duty jaw crusher with anti-splatter according to claim 1, characterized in that, The air inlet part (7) comprises a mounting plate (71) mounted on the back of the feeding box (1), the top of the mounting plate (71) is provided with an air extractor body (72), the front surface of the air extractor body (72) is provided with an air extractor rotating head (73), the back of the air extractor body (72) is provided with a wind collecting cover (74), the air extractor rotating head (73) is used for driving the rotation of the air extractor body (72), and the air extractor body (72) is used for extracting air from the outside into the wind collecting cover (74) after rotating, the surface of the wind collecting cover (74) is provided with an air guide pipe (75), the surface of the air guide pipe (75) is provided with a jet head (76), the jet head (76) is inserted into the feeding hopper (2), and the jet head (76) is used for conveying the air collected in the wind collecting cover (74) to be sprayed out of the jet head (76), so as to prevent dust from flying out of the feeding hopper (2).

4. A mine-duty jaw crusher with anti-splatter according to claim 3, characterized in that The feeding part (3) comprises a long rod (31) mounted on the inner wall of the feeding hopper (2) and extending to the back of the feeding box (1), a plurality of arc plates (32) are mounted on the surface of the long rod (31), and the arc plates (32) are used for guiding the downward transmission of the ore when the ore enters and driving the rotation of the long rod (31).

5. A mine-duty jaw crusher with anti-spray according to claim 4, characterized in that The back of the feeding box (1) is provided with a transmission part (8), the transmission part (8) is used for driving the rotation of the air extractor rotating head (73) when the long rod (31) rotates, and then driving the rotation of the air extractor body (72).

6. A mine-duty jaw crusher with anti-spray according to claim 5, characterized in that The transmission part (8) includes a rotating rod I (81) installed on the back of the feeding box (1), a belt piece (82) is installed between the rotating rod I (81) and the long rod (31), which is used to drive the rotation of the rotating rod I (81) when the long rod (31) rotates, the surface of the rotating rod I (81) is installed with a large gear (83), the back of the feeding box (1) is installed with a rotating rod II (84) at the rotating head (73) of the air extractor, the end of the rotating rod II (84) is connected with the rotating head (73) of the air extractor, the surface of the rotating rod II (84) is installed with a small gear (85), the small gear (85) and the large gear (83) are engaged, which is used to drive the rotation of the rotating rod II (84) after the rotating rod I (81) rotates.

7. A mine-duty jaw crusher with anti-splatter according to claim 1, characterized in that, The dust blocking part (6) is arranged at the through part of the feeding groove (11) and the feeding port (101) of the crusher main body (100), which is used to block the crusher main body (100) and prevent the crushed dust in the crusher main body (100) from entering the feeding box (1) when not in use.

8. A mine-duty jaw crusher with anti-spray according to claim 7, characterized in that The dust blocking part (6) includes an installation strip (61) installed on the top wall of the crusher main body (100), a rotatable dust blocking plate (63) is installed on the inner wall of the feeding port (101), a reset spring (62) is installed between the installation strip (61) and the dust blocking plate (63), the reset spring (62) is used to reset the dust blocking plate (63) to a parallel state with the feeding port (101), which is used to block the feeding port (101).

9. A mine duty jaw crusher with anti-splatter according to claim 1, characterised in that, The uppermost guide plate (4) is provided with an installation groove (41) below the feeding hopper (2), and a buffer part (9) is installed in the installation groove (41), which is used to buffer the falling of the ore.

10. A mine-duty jaw crusher with anti-spray according to claim 9, characterized in that The buffer part (9) includes a rolling roller (91) installed on the inner wall of the installation groove (41) and connected with the installation groove (41) through a bearing, and a rubber sleeve (92) is installed on the surface of the rolling roller (91).

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