Mining double-roller crusher

Abstract

The invention relates to the technical field of crushers, and discloses a mining double-roller crusher which comprises a machine shell and further comprises two swing plates rotationally mounted on the inner wall of the machine shell, crushing rollers are rotationally mounted on the sides, close to each other, of the two swing plates, and the two crushing rollers can rotate relatively; the blocking part is arranged below the middle parts of the two crushing rollers and can move up and down for adjustment; and a triangular crushing area is formed between the blocking part and the two crushing rollers. The feeding speed of the crushing channel can be increased through reciprocating swing of the two swing plates, so that the crushing efficiency is improved, when the two crushing rollers swing downwards, the extrusion effect can be improved under the action of the blocking parts, and in this way, the crushing effect can be improved through extrusion of the two crushing rollers; meanwhile, compared with a horizontal mutual approaching mode, the downward acting force can prevent mineral aggregate chippings from splashing upwards during extrusion, and then influences on surrounding operators or nearby equipment are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of crushers, in particular to a double-roll crusher for mining. Background Art

[0002] A double-roll crusher is a crusher that uses two crushing rollers rotating in opposite directions to crush materials. It is usually used in industries such as ore, construction, and chemicals, and plays an important role in the crushing process of ores.

[0003] At present, there is a Chinese invention patent with a patent publication number of CN118002253B, which discloses a new type of double-roll mining crusher. The crusher expands and contracts the gap between the crushing rollers through a reciprocating mechanism, and cooperates with the movement of the limit column to improve the efficiency of feeding ore and stone into the area between the two rollers, and also improves the effect of crushing stones.

[0004] However, the two crushing rollers of the above-mentioned crusher move away from or towards each other in a horizontal manner. In this way, when the crushing rollers approach each other, under the action of the horizontal squeezing force, the small crushed pieces may splash out from above, resulting in the splashing of gravel at the feed port during the crushing process, thereby affecting the surrounding operators or nearby equipment. Summary of the invention

[0005] The object of the present invention is to provide a mining double-roll crusher to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following technical solution: a mining double-roll crusher, comprising a casing, and further comprising:

[0007] Two swing plates are rotatably mounted on the inner wall of the casing, and crushing rollers are rotatably mounted on the adjacent sides of the two swing plates, and the two crushing rollers can rotate relative to each other;

[0008] A blocking part is arranged below the middle of the two crushing rollers and can be adjusted to move up and down, and a triangular crushing area is formed between the blocking part and the two crushing rollers, a crushing channel for entering the crushing area is formed between the two crushing rollers, and a discharging channel is formed between the two crushing rollers and the blocking part;

[0009] The driving part is used to drive the two swing plates to rotate back and forth relative to each other and adjust the feeding diameter of the crushing channel to expand or reduce it.

[0010] Preferably, driving gears are coaxially installed at the installation positions of the two swing plates, the two driving gears are driven by a servo motor installed outside the casing, and the two driving gears rotate relative to each other, and a transmission gear is coaxially fixed to the side wall of the crushing roller, and the transmission gear is meshed with the corresponding driving gear.

[0011] Preferably, the blocking part includes a lifting plate installed on the inner wall of the casing and capable of vertical reciprocating sliding adjustment, and a bottom roller is rotatably installed on the outer wall of the lifting plate, and a connecting plate is rotatably connected between the lifting plate and the two swinging plates.

[0012] Preferably, two bottom rollers are provided, both of which are coaxially fixed with counter-rotating gears, and the two counter-rotating gears are meshed with each other, one of the counter-rotating gears is driven by a motor installed on the lifting plate, and the counter-rotating gear has the same rotation direction as the driving gear at the same side.

[0013] Preferably, a turntable is rotatably mounted on the inner wall of the casing below the lifting plate, and the turntable is driven by a motor mounted outside the casing, and a connecting rod is rotatably mounted between the outer wall of the turntable away from the center and the lifting plate.

[0014] Preferably, a feed bin with an inverted cone-shaped design is provided on the top of the casing, and a discharge port of the feed bin corresponds to the crushing channel, and a drop port is also provided on the bottom of the casing.

[0015] Preferably, the inner wall of the casing is also installed with a coarse filter screen with an inclined design, and the outer wall of the casing located below the coarse filter screen is also provided with a screening port.

[0016] Preferably, a baffle plate is installed at the discharge port of the feed bin, and the baffle plate is open at the bottom.

[0017] Preferably, a material conveyor belt is also set up below the drop opening at the bottom of the casing to convey the crushed material.

[0018] Preferably, the outer walls of the two crushing rollers are both ridge-shaped and have grooves of varying depths.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention can speed up the feeding speed of the crushing channel by reciprocating the two swing plates, thereby speeding up the crushing efficiency. When the two crushing rollers swing downward, the extrusion effect will be improved under the action of the blocking part. This method can not only improve the crushing effect by using the extrusion of the two, but also avoid the upward splashing of mineral debris during extrusion compared with the method of approaching each other horizontally, thereby avoiding the impact on surrounding operators or nearby equipment.

[0021] 2. The present invention changes the rotation speed of the crushing roller when the swing plate swings back and forth through the meshing action between the driving gear and the driven gear. That is, when the swing plate swings upward, the rotation speed of the transmission gear and the crushing roller will slow down, so that the crushing roller can avoid pushing out the mineral materials that have not fallen in time when it is rising, so as to avoid the mineral materials splashing. When the swing plate swings downward, the rotation speed of the transmission gear and the crushing roller is accelerated, and the action of the blocking part is combined, so that the mineral materials are squeezed and the force between them and the crushing roller is further increased. In this way, while the feeding speed is accelerated by reciprocatingly expanding or shrinking the crushing channel, the crushing effect can be further improved by changing the rotation speed of the crushing roller.

[0022] 3. The present invention switches the linear speed of the crushing roller back and forth between states greater than and less than the linear speed of the bottom roller, resulting in different forces on the mineral material when it is rubbed by the two rollers, thereby causing the mineral material to rotate, and the direction of rotation of the material will suddenly change when the linear speed is switched back and forth. This sudden change in rotation and force can increase the shear and extrusion effect of the object between the crushing rollers and increase the stress inside the object, thereby further improving the crushing effect of the mineral material when it passes through the secondary crushing channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a front view of the present invention;

[0025] Figure 3 For the present invention Figure 2 Sectional view along AA;

[0026] Figure 4 For the present invention Figure 2 Sectional view along BB;

[0027] Figure 5 It is a left side view of the present invention;

[0028] Figure 6 For the present invention Figure 5 A semi-section stereogram of the middle section along CC;

[0029] Figure 7 This is a state diagram of the crushing channel of the present invention being in the minimum diameter;

[0030] Figure 8 This is a state diagram of the crushing channel of the present invention being at the maximum diameter.

[0031] In the figure: 1. Casing; 2. Feed bin; 3. Screening port; 4. Swinging plate; 5. Transmission gear; 6. Crushing roller; 7. Lifting plate; 8. Counter-rotating gear; 9. Bottom roller; 10. Driving gear; 11. Connecting plate; 12. Turntable; 13. Connecting rod; 14. Coarse filter; 15. Baffle plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in 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.

[0033] See also Figures 1 to 8 The present invention provides a technical solution: a mining double-roll crusher, comprising a casing 1, and further comprising:

[0034] Two swing plates 4 are rotatably mounted on the inner wall of the casing 1, and crushing rollers 6 are rotatably mounted on the adjacent sides of the two swing plates 4, and the two crushing rollers 6 can rotate relative to each other;

[0035] A blocking part is arranged below the middle of the two crushing rollers 6 and can be adjusted up and down, and a triangular crushing area is formed between the blocking part and the two crushing rollers 6, a crushing channel for entering the crushing area is formed between the two crushing rollers 6, and a discharging channel is formed between the two crushing rollers 6 and the blocking part, and the outer walls of the two crushing rollers 6 are both designed to be convex and have a shallow and deep groove design;

[0036] The driving part is used to drive the two swing plates 4 to rotate back and forth relative to each other and to expand or reduce the feed diameter of the crushing channel.

[0037] When the double-roll crusher is in use, the ore is fed into the crushing channel between the two crushing rollers 6, and is crushed under the relative rotation of the two crushing rollers 6. Under the blocking of the lower blocking part, the ore is further crushed in the triangular crushing area until it falls from the discharge channels on both sides.

[0038] At the same time, the two swing plates 4 are driven by the driving unit to reciprocate relative to each other, so that they rotate from a horizontal state to an inclined state, such as Figure 7 and Figure 8As shown in the figure, the two are respectively the states before and after the rotation. During the rotation process, the diameter of the crushing channel formed between the two crushing rollers 6 will increase with the swing of the swing plate 4, from L1 to L2, so as to increase the feeding speed of the ore. Then, the crushing rollers 6 will swing back with the swing plate 4 so that the crushing channel between the two crushing rollers 6 will be reduced to L1 again. In this way, the reciprocating swing of the two swing plates 4 can speed up the feeding speed of the crushing channel, thereby improving the crushing efficiency.

[0039] Moreover, it is worth mentioning that when the two swing plates 4 are reset and swung, the two crushing rollers 6 will swing downward and the extrusion effect will be enhanced under the action of the blocking part. This method can not only utilize the extrusion of the two to improve the crushing effect, but also the downward force can avoid the mineral debris from splashing upward during extrusion compared to the horizontal approach to each other, thereby avoiding affecting the surrounding operators or nearby equipment.

[0040] In one of the more preferred embodiments, an implementation method of driving two crushing rollers 6 to rotate relative to each other is provided;

[0041] Driving gears 10 are coaxially mounted at the mounting positions of the two swing plates 4. The two driving gears 10 are driven by a servo motor mounted outside the casing 1, and the two driving gears 10 rotate relative to each other. A transmission gear 5 is coaxially fixed to the side wall of the crushing roller 6, and the transmission gear 5 is meshed with the corresponding driving gear 10.

[0042] For details, please refer to Figure 7 and Figure 8 The purpose of driving the two crushing rollers 6 to rotate relative to each other can be achieved by driving the motor outside the casing 1 and meshing with the driving gear 10 and the transmission gear 5. For the specific rotation direction, see Figure 7 As indicated by the arrow;

[0043] It is worth mentioning that, from the above content, it can be known that the diameter of the crushing channel is realized by the swing of the swing plate 4. Therefore, when the swing plate 4 swings upward, the transmission gear 5 will make a circular rotation along the driving gear 10. Since the revolution direction of the transmission gear 5 is the same as the rotation direction of the driving gear 10, the revolution speed of the transmission gear 5 and the rotation speed of the driving gear 10 will be offset to a certain extent in this process. Therefore, in the process of the swing plate 4 swinging upward, the rotation speed of the transmission gear 5 and the crushing roller 6 will slow down, so as to prevent the crushing roller 6 from pushing out the mineral material that has not fallen in time when it rises, so as to avoid the mineral material splashing;

[0044] On the contrary, when the swing plate 4 swings downward, the revolution direction of the transmission gear 5 is opposite to the rotation direction of the driving gear 10. Therefore, in this process, the rotation speed of the driving gear 10 will be increased to a certain extent, thereby accelerating the rotation speed of the transmission gear 5 and the crushing roller 6 when they are reset. Combined with the effect of the blocking part, the ore is squeezed and the force between it and the crushing roller 6 is further increased;

[0045] In this way, while the feeding speed is accelerated by reciprocatingly expanding or shrinking the crushing channel, the crushing effect can be further improved by changing the rotation speed of the crushing roller 6.

[0046] In one of the more preferred embodiments, an implementation of a blocking portion is provided, which can be specifically referred to in Figure 4 and Figure 7 ;

[0047] The blocking part includes a lifting plate 7 installed on the inner wall of the casing 1 and capable of vertical reciprocating sliding adjustment, and a bottom roller 9 is rotatably installed on the outer wall of the lifting plate 7, and a connecting plate 11 is rotatably connected between the lifting plate 7 and the two swing plates 4.

[0048] During the crushing process, the lifting plate 7 is driven to reciprocate vertically by the external structure, and the two swing plates 4 are driven to swing reciprocally under the action of the connecting plate 11, thereby achieving the purpose of adjusting the diameter of the crushing channel as mentioned above;

[0049] Moreover, during the vertical lifting process of the lifting plate 7, the distance between the bottom roller 9 and the crushing roller 6 can remain unchanged, that is, Figure 7-8 The distance L in the middle is shown, so that the discharge channel formed between the bottom roller 9 and the crushing roller 6 will form a secondary crushing channel, and while accelerating the feeding speed as mentioned above, the crushing quality can be guaranteed.

[0050] In one of the more preferred embodiments, two bottom rollers 9 are provided, both bottom rollers 9 are coaxially fixed with counter-rotating gears 8, and the two counter-rotating gears 8 are meshed with each other, one of the counter-rotating gears 8 is driven by a motor installed on the lifting plate 7, and the counter-rotating gear 8 rotates in the same direction as the driving gear 10 on the same side.

[0051] See also Figure 7-8 There are two bottom rollers 9, and under the action of the counter-rotating gear 8, the rotation direction of the two bottom rollers 9 is also relative rotation, and the rotation direction is the same as that of the driving gear 10. For details, please refer to Figure 7 The direction indicated by the arrow;

[0052] In this way, the ore materials after passing through the crushing channel will be crushed for the second time under the rotation and extrusion of the crushing roller 6 and the bottom roller 9, thereby improving the crushing effect;

[0053] It is worth mentioning that the bottom roller 9 and the corresponding crushing roller 6 rotate in opposite directions, so the force applied by the ore between the two will be toward the axis of each roller. When the rotational linear speed of the bottom roller 9 is set to be the same as the rotational linear speed of the driving gear 10, under the premise that the rotational speed of the crushing roller 6 is the same as the rotational speed of the driving gear 10, the frictional forces of the two rollers on the ore are equal in magnitude and opposite in direction, so the ore will only be subjected to the crushing force of extrusion;

[0054] However, it can be seen from the above content that the rotation speed of the crushing roller 6 will accelerate or decelerate with the swing of the swing plate 4, so the linear speed between the crushing roller 6 and the bottom roller 9 will change, that is, the linear speed of the crushing roller 6 switches back and forth between states greater than and less than the linear speed of the bottom roller 9. This will cause the mineral material to be subjected to different forces when rubbed by the two rollers, thereby causing the mineral material to rotate, and under the back-and-forth switching of the linear speed, the direction of rotation of the material will suddenly change. This sudden change in rotation and force can increase the shear and extrusion of the object between the crushing rollers and increase the stress inside the object, thereby further improving the crushing effect of the mineral material when passing through the secondary crushing channel.

[0055] In one of the more preferred embodiments, an implementation method for driving the lifting plate 7 to move vertically back and forth is provided;

[0056] A turntable 12 is rotatably mounted on the inner wall of the casing 1 below the lifting plate 7 , and the turntable 12 is driven by a motor mounted outside the casing 1 , and a connecting rod 13 is rotatably mounted between the outer wall of the turntable 12 away from the center and the lifting plate 7 .

[0057] For details, please refer to Figure 3 and Figure 4 , through the crank slider structure formed by the turntable 12, the connecting rod 13 and the turntable 12, the lifting plate 7 can be driven to reciprocate by the rotation of the turntable 12, thereby driving the two swing plates 4 to swing back and forth;

[0058] Moreover, in combination with the above content, the rotation speed of the turntable 12 can be controlled so that the lifting plate 7 slows down when moving up and accelerates when moving down, so as to match the rotation speed change of the above-mentioned crushing roller 6, further avoiding the splashing of mineral materials, and at the same time increasing the squeezing force of the crushing roller 6, thereby achieving the purpose of improving the crushing effect.

[0059] In one of the more preferred embodiments, a feed bin 2 with an inverted cone shape is provided on the top of the casing 1, and the discharge port of the feed bin 2 corresponds to the crushing channel. A drop port is also provided at the bottom of the casing 1, and a material conveyor belt is also set up below the drop port at the bottom of the casing 1 for conveying the crushed material.

[0060] See also Figure 3The ore can enter from the feed bin 2 on the top of the casing 1 through a conveyor belt or a transport vehicle, and then be discharged from the drop port below after being crushed, and fall into the material conveyor belt set up below and transported to the next process.

[0061] In one of the more preferred embodiments, a coarse filter screen 14 with an inclined design is further installed on the inner wall of the casing 1 , and a screening port 3 is further opened on the outer wall of the casing 1 located below the coarse filter screen 14 .

[0062] Since the mineral materials have different orientations during crushing, long and flat materials may fall from the crushing roller 6 without being completely crushed. Therefore, the crushed mineral materials can be preliminarily screened through the coarse filter 14, and small particles fall down, while large particles are discharged from the screening port 3 and can re-enter the feed bin 2 for further crushing.

[0063] In one of the more preferred embodiments, a baffle plate 15 is further installed at the discharge port of the feed bin 2, and the baffle plate 15 is open at the bottom. Figure 6 The design of the baffle plate 15 can prevent the ore from falling directly from both sides of the crushing roller 6, so as to improve the crushing efficiency.

[0064] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mining roller crusher, comprising a housing (1), characterized in that: Also includes: Two swing plates (4) are rotatably mounted on the inner wall of the casing (1), and crushing rollers (6) are rotatably mounted on the adjacent sides of the two swing plates (4), and the two crushing rollers (6) can rotate relative to each other; A blocking part is arranged below the middle of the two crushing rollers (6) and can be moved up and down for adjustment, and a triangular crushing area is formed between the blocking part and the two crushing rollers (6), a crushing channel for entering the crushing area is formed between the two crushing rollers (6), and a discharge channel is formed between the two crushing rollers (6) and the blocking part; The driving part is used to drive the two swing plates (4) to rotate back and forth relative to each other and adjust the diameter of the feed in the crushing channel to expand or reduce it.

2. The mining double-roll crusher according to claim 1, characterized in that: A driving gear (10) is coaxially mounted at the mounting positions of the two swing plates (4), the two driving gears (10) are driven by a servo motor mounted outside the housing (1), and the two driving gears (10) rotate relative to each other. A transmission gear (5) is coaxially fixed to the side wall of the crushing roller (6), and the transmission gear (5) meshes with the corresponding driving gear (10).

3. The mining double-roll crusher according to claim 2, characterized in that: The blocking portion comprises a lifting plate (7) mounted on the inner wall of the casing (1) and capable of vertical reciprocating sliding adjustment, and a bottom roller (9) is rotatably mounted on the outer wall of the lifting plate (7), and a connecting plate (11) is rotatably connected between the lifting plate (7) and the two swing plates (4).

4. The mining double-roll crusher according to claim 3, characterized in that: Two bottom rollers (9) are provided, and counter-rotating gears (8) are coaxially fixed to the two bottom rollers (9), and the two counter-rotating gears (8) are meshed with each other, and one of the counter-rotating gears (8) is driven by a motor installed on the lifting plate (7), and the counter-rotating gear (8) rotates in the same direction as the driving gear (10) at the same side.

5. The mining double-roll crusher according to claim 3, characterized in that: A turntable (12) is rotatably mounted on the inner wall of the casing (1) below the lifting plate (7), and the turntable (12) is driven by a motor mounted outside the casing (1). A connecting rod (13) is rotatably mounted between the outer wall of the turntable (12) away from the center of the circle and the lifting plate (7).

6. The mining double-roll crusher according to claim 1, characterized in that: A feed bin (2) with an inverted cone-shaped design is provided on the top of the casing (1), and a discharge port of the feed bin (2) corresponds to the crushing channel. A discharge port is also provided at the bottom of the casing (1).

7. The mining double-roll crusher according to claim 1, characterized in that: The inner wall of the casing (1) is also provided with a coarse filter screen (14) with an inclined design, and the outer wall of the casing (1) located below the coarse filter screen (14) is also provided with a screening opening (3).

8. The mining double-roll crusher according to claim 6, characterized in that: A material blocking plate (15) is also installed at the discharge port of the feed bin (2), and the material blocking plate (15) is open at the bottom.

9. The mining double-roll crusher according to claim 6, characterized in that: A material conveyor belt is also provided below the material drop opening at the bottom of the casing (1) for conveying the crushed material.

10. The mining double-roll crusher according to any one of claims 1 to 9, characterized in that: The outer walls of the two crushing rollers (6) are both convex and have grooves of varying depths.

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