An energy-saving crushing and grinding device for iron ore concentrate processing

Abstract

This invention relates to the field of crushing and grinding equipment, and in particular to an energy-saving crushing and grinding equipment for processing iron concentrate. The equipment includes a crushing box, a feed box fixed to the top for feeding, and a discharge box below the crushing box for discharging. Inside the crushing box are crushing rollers and crushing plates for processing the iron concentrate raw material. A feeding mechanism for controlling the feeding speed is provided between the crushing box and the feed box. This invention, through the cooperation of the feeding mechanism, driving mechanism, baffle mechanism, first baffle, second baffle, third baffle, and buffer plate, achieves intermittent or continuous feeding of blocky raw materials. The multi-stage baffles and buffer plate form a stepped flow channel, where the material falls sequentially through the first baffle for initial diversion, the second baffle for directional correction, and the third baffle for speed attenuation, allowing the material to smoothly contact the crushing rollers along a preset trajectory and speed, eliminating the risk of damage from direct impact at the source.

Description

Technical Field

[0001] This invention relates to the field of crushing and grinding equipment technology, and in particular to an energy-saving crushing and grinding equipment for processing iron concentrate. Background Technology

[0002] Iron concentrate is an iron powder product that has undergone mineral processing, purification, and other processes. Its iron content is usually above 60%, and high-quality iron concentrate can reach above 70%. It is an important raw material for the steel industry, foundry industry, and other fields. Iron concentrate is a mineral powder made from iron ore through crushing, grinding, and mineral processing. When producing and processing iron concentrate, appropriate equipment is required for crushing and grinding.

[0003] While existing crushing and grinding devices can achieve uniform feeding of lumpy raw materials into the grinding box, the lumpy raw materials fall freely under the influence of gravity the moment they enter the grinding box. Without transition buffering, they directly impact the surface of the crushing roller. The high-frequency impact can easily cause damage such as chipping, rolling, or deformation of the crushing teeth of the crushing roller, which seriously affects the service life and crushing accuracy of the crushing components. Therefore, we propose an energy-saving crushing and grinding device for iron concentrate processing. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides an energy-saving crushing and grinding device for iron concentrate processing.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] An energy-saving crushing and grinding device for processing iron concentrate includes a crushing box. A feed box for feeding is fixed to the top of the crushing box, and a discharge box for discharging is provided below the crushing box. The crushing box also contains crushing rollers and crushing plates for processing iron concentrate raw materials. A feeding mechanism for controlling the feeding speed is provided between the crushing box and the feed box. The feeding mechanism includes a first baffle provided inside the feed box, second baffles provided on both sides of the first baffle, a third baffle inserted inside the second baffle, two buffer plates for buffering the raw materials provided below the first baffle, and a drive mechanism for controlling its lifting and lowering provided below the first baffle. A blocking mechanism for controlling the rotation of the buffer plates is provided below the drive mechanism.

[0007] In a preferred embodiment of the present invention, the driving mechanism includes a threaded rod disposed inside the crushing chamber and a support rod fixed to the bottom of a first baffle. A main rack is fixed to the bottom of the support rod, and a secondary rack is disposed to the bottom of the threaded rod. A swing plate is disposed on the side of the main rack and the secondary rack facing each other. An electro-hydraulic rod is also disposed between the swing plate and the crushing chamber. Both ends of the swing plate are fixed with a main gear and a secondary gear that mesh with the main rack and the secondary rack, respectively. The main gear meshes with the main rack, and the secondary gear meshes with the secondary rack. The telescopic end of the electro-hydraulic rod is rotatably connected to the middle of the swing plate. The threaded rod is rotatably installed inside the crushing chamber, and the top of the threaded rod penetrates... An adjustment knob is fixed after passing through the crushing box. The bottom of the support rod extends into the interior of the crushing box and is fixed to the main rack. The telescopic end of the electric hydraulic rod pushes the swing plate to rise and fall. The secondary rack limits the secondary gear, causing the swing plate to rotate along the axis of the secondary gear. The swing plate drives the main gear to rotate, and the main gear drives the main rack meshing with it to rise and fall. The main rack drives the first baffle to rise and fall through the support rod. The first baffle drives the second and third baffles to rise and fall inside the feed box. Through the gap formed by the first, second, and third baffles and the inverted trapezoidal feed box, the material inside the feed box is fed intermittently or continuously.

[0008] As a preferred embodiment of the present invention, a nut is fixed on the side of the secondary rack away from the swing plate. A threaded hole adapted to the threaded rod is opened in the middle of the nut. A limit rod is also fixed at the bottom of the side of the secondary rack away from the swing plate. A limit sleeve is sleeved on the top of the limit rod. The top of the limit sleeve is fixed to the inner wall of the crushing box. Rotating the adjustment knob causes the adjustment knob to drive the threaded rod to rotate. The threaded rod cooperates with the threaded hole, causing the threaded rod to drive the nut to move vertically up and down. The nut drives the secondary rack to move vertically up and down. The secondary rack drives the secondary gear meshing with it to rotate. Adjusting the axial position of the secondary gear causes the axial position of the secondary gear to rise and fall.

[0009] As a preferred embodiment of the present invention, the material blocking mechanism includes a connecting frame fixed at the end of the main rack away from the main gear, a transmission rack fixed at the end of the connecting frame away from the main rack, two fixed rods fixed to the outside of the two buffer plates, and a transmission gear meshing with the transmission rack between the two fixed rods. When the main rack rises vertically, the main rack drives the connecting frame to rise and fall, and the connecting frame drives the transmission rack to rise and fall.

[0010] As a preferred embodiment of the present invention, a positioning plate is fixed inside the crushing box, and a transmission gear is rotatably installed on the lower half of the positioning plate. An extension rod is also fixed in the middle of the transmission gear, and the two ends of the extension rod are respectively fixed to two fixed rods. When the transmission rack moves up and down, the transmission rack drives the transmission gear to rotate, and the transmission gear drives the fixed rod to rotate through the extension rod. The fixed rod drives the buffer plate to rotate, so that the buffer plate changes from an inclined state to a vertical state.

[0011] As a preferred embodiment of the present invention, a retaining plate is also sleeved on the outside of the support rod, and two support rods are fixed on the outside of the retaining plate. A sliding rod is provided between the two support rods and the two third baffles. The bottom of the sliding rod is sleeved on the outer wall of the support rod. The retaining plate is fixed in the lower half of the feed box, and the support rod passes through the retaining plate and is fixed to the main rack.

[0012] As a preferred embodiment of the present invention, a lifting cylinder is sleeved on the top of the sliding rod, the top of the lifting cylinder is hinged to the bottom of the third baffle, and an inclined rod is also hinged between the sliding rod and the first baffle. When the support rod drives the first baffle to move downward, the first baffle drives the end of the inclined rod that is hinged to the first baffle to move downward, so that the inclined rod pushes the lifting cylinder to move laterally. The lifting cylinder drives the sliding rod to move along the outer wall of the support rod. At the same time, the lifting cylinder drives the third baffle to move to the outside of the second baffle. Through the cooperation of the lifting cylinder and the sliding rod, the third baffle is provided with a supporting force, so that the third baffle changes from an inclined state to a horizontal state, thereby closing the feed box.

[0013] As a preferred embodiment of the present invention, a protective rubber strip is fixed between the first baffle and the second baffle, and a protective frame for protecting the swing plate is provided inside the crushing box. A blocking block for limiting the third baffle is also provided at the bottom of the second baffle. The third baffle is limited by the blocking block, so that the third baffle limits the second baffle and prevents the third baffle from falling off the second baffle when it moves. The protective rubber strip covers the gap between the second baffle and the first baffle when the second baffle is bent, preventing raw materials from entering the gap between the first baffle and the second baffle.

[0014] Compared with the prior art, the beneficial effects that this invention can achieve are:

[0015] This invention achieves intermittent or continuous feeding of block raw materials through the cooperation of a feeding mechanism, a driving mechanism, a blocking mechanism, a first baffle, a second baffle, a third baffle, and a buffer plate. The multi-stage baffle and buffer plate form a stepped flow channel. When the material falls, it is initially diverted by the first baffle, directionally corrected by the second baffle, and its speed is attenuated by the third baffle. Finally, the buffer plate absorbs the residual impact force, so that the material contacts the crushing roller smoothly with a preset trajectory and speed, eliminating the risk of damage caused by direct impact from the source.

[0016] This invention achieves precise adjustment of the position of the secondary gear shaft through the cooperation of structures such as threaded rod, nut, secondary rack, swing plate, limiting rod and limiting sleeve. When the position of the secondary gear shaft changes, its meshing radius with the main gear changes. Through dynamic adjustment of the gear transmission ratio, the angular velocity of the swing plate during rotation can be precisely controlled. The change in the angular velocity of the swing plate is directly converted into the difference in the lifting amplitude of the support rod, and finally realizes multi-level adjustment of the baffle tilt angle to meet the material handling needs under different working conditions.

[0017] This invention utilizes the coordination of structures such as an electric hydraulic rod, a swing plate, a main gear, a secondary gear, a main rack, a secondary rack, and a limiting rod to form a stable trapezoidal layout of the first baffle, the second baffle, and the third baffle. When the material falls, it is initially diverted by the first baffle, directionally corrected by the second baffle, and its speed is reduced by the third baffle. This ensures that the material enters the crushing box evenly and slowly, improving the material processing accuracy and further reducing the risk of equipment damage.

[0018] The present invention uses a protective rubber strip to cover the gap between the second baffle and the first baffle when the second baffle is bent. Under its own elastic tension, the protective rubber strip is always in close contact with the side of the first baffle, forming a dynamic sealing barrier. It can cover the gap between the two baffles caused by relative movement in real time, preventing blocky raw materials and fine particles from embedding into the gap between the first baffle and the second baffle.

[0019] This invention utilizes the combination of structures such as an electric hydraulic rod, a swing plate, a main gear, a secondary gear, a main rack, a secondary rack, and a limiting rod to arrange the first baffle, the second baffle, and the third baffle in a row. The edges of the three baffles adopt a stepped sealing design, which forms a tight fit with the frame of the feed box, achieving a complete seal of the feed box.

[0020] This invention utilizes the cooperation of structures such as a second baffle, a third baffle, a lifting cylinder, a sliding rod, and a support rod to enable the third baffle to slide inside the second baffle. When the lifting cylinder retracts, the third baffle retracts into the second baffle. Based on the material characteristics and production requirements, the opening and closing degree and tilt angle of the channel can be precisely controlled, thereby flexibly adjusting the feeding speed of the feeding box. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a cross-sectional structural diagram of the crushing box of the present invention;

[0023] Figure 3 This is a schematic diagram of the feeding mechanism of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the first baffle of the present invention;

[0025] Figure 5 This is a schematic diagram of the support rod of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the third baffle of the present invention;

[0027] Figure 7 This is a schematic diagram of the main rack structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the swing plate of the present invention;

[0029] Figure 9 This is a schematic diagram of the connecting frame of the present invention;

[0030] Figure 10 This is a schematic diagram of the structure of the buffer plate of the present invention;

[0031] Figure 11 This is a schematic diagram of the slide bar of the present invention;

[0032] Figure 12 This is a schematic diagram of the diagonal rod of the present invention.

[0033] The components include: 1. Crushing box; 2. Feed box; 3. Discharge box; 4. Crushing roller; 5. Crushing plate; 6. Feeding mechanism; 601. First baffle; 602. Second baffle; 603. Third baffle; 604. Protective rubber strip; 605. Support rod; 606. Lifting cylinder; 607. Slide rod; 608. Support rod; 609. Protective frame; 610. Electro-hydraulic rod; 611. Swing plate; 6121. Main gear; 6122. Secondary gear; 613. Main rack; 614. Secondary rack; 615. Limiting rod; 616. Limiting sleeve; 617. Threaded rod; 618. Connecting frame; 619. Transmission rack; 620. Transmission gear; 621. Extension rod; 622. Fixing rod; 623. Buffer plate; 624. Nut; 625. Positioning plate; 626. Diagonal rod; 627. Clamping plate. Detailed Implementation

[0034] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0035] Example: The present invention provides, as follows Figure 1 and Figure 2The energy-saving crushing and grinding device for processing iron concentrate shown includes a crushing box 1, a feed box 2 for feeding is fixed on the top of the crushing box 1, and a discharge box 3 for discharging is provided below the crushing box 1. The crushing box 1 is also equipped with a crushing roller 4 and a crushing plate 5 for processing iron concentrate raw materials.

[0036] As can be seen from the above, when in use, the blocky iron concentrate raw material to be processed is put into the inside of the feed box 2. After the blocky iron concentrate raw material enters the inside of the crushing box 1, it is ground and crushed by the crushing roller 4 and the crushing plate 5. The processed material is discharged through the discharge box 3.

[0037] refer to Figure 2 , Figure 3 and Figure 4 As shown, a feeding mechanism 6 for controlling the feeding speed is provided between the crushing box 1 and the feeding box 2. The feeding mechanism 6 includes a first baffle 601 provided inside the feeding box 2, a second baffle 602 provided on both sides of the first baffle 601, a third baffle 603 inserted inside the second baffle 602, two buffer plates 623 for buffering the raw materials provided below the first baffle 601, and a drive mechanism for controlling its lifting and lowering is provided below the first baffle 601.

[0038] refer to Figure 4 , Figure 5 and Figure 6As shown, the drive mechanism includes a threaded rod 617 disposed inside the crushing chamber 1 and a support rod 605 fixed to the bottom of the first baffle 601. A main rack 613 is fixed to the bottom of the support rod 605, and a secondary rack 614 is disposed to the bottom of the threaded rod 617. A swing plate 611 is disposed on the side facing the main rack 613 and the secondary rack 614. An electro-hydraulic rod 610 is also disposed between the swing plate 611 and the crushing chamber 1. Both ends of the swing plate 611 are fixed with a main gear 6121 and a secondary gear 6122 that mesh with the main rack 613 and the secondary rack 614. The main gear 6121 meshes with the main rack 613, and the secondary gear 6122 meshes with the secondary rack 614. The telescopic end of the electro-hydraulic rod 610 is rotatably connected to the middle of the swing plate 611. The threaded rod 617 is rotatably installed inside the crushing chamber 1, and the top of the threaded rod 617 penetrates the crushing chamber 1. An adjustment knob is fixed at the rear of the crushing box 1. The bottom of the support rod 605 extends into the interior of the crushing box 1 and is fixed to the main rack 613. The telescopic end of the electric hydraulic rod 610 pushes the swing plate 611 to rise and fall. The auxiliary rack 614 limits the auxiliary gear 6122, causing the swing plate 611 to rotate along the axis of the auxiliary gear 6122. The swing plate 611 drives the main gear 6121 to rotate. The main gear 6121 drives the main rack 613 meshing with it to rise and fall. The main rack 613 drives the first baffle 601 to rise and fall through the support rod 605. The first baffle 601 drives the second baffle 602 and the third baffle 603 to rise and fall inside the feed box 2. Through the gap formed by the first baffle 601, the second baffle 602 and the third baffle 603 and the inverted trapezoidal feed box 2, the material inside the feed box 2 is fed intermittently or continuously.

[0039] refer to Figure 4 , Figure 5 and Figure 6 As shown, a nut 624 is fixed to the side of the secondary rack 614 away from the swing plate 611. A threaded hole that matches the threaded rod 617 is opened in the middle of the nut 624. A limit rod 615 is also fixed to the bottom of the side of the secondary rack 614 away from the swing plate 611. A limit sleeve 616 is sleeved on the top of the limit rod 615. The top of the limit sleeve 616 is fixed to the inner wall of the crushing box 1. Rotating the adjustment knob causes the adjustment knob to drive the threaded rod 617 to rotate. The threaded rod 617 cooperates with the threaded hole, causing the threaded rod 617 to drive the nut 624 to move vertically up and down. The nut 624 drives the secondary rack 614 to move vertically up and down. The secondary rack 614 drives the secondary gear 6122 that meshes with it to rotate. Adjusting the position of the axis of the secondary gear 6122 causes the axis of the secondary gear 6122 to rise and fall.

[0040] refer to Figure 6As shown, a protective rubber strip 604 is fixed between the first baffle 601 and the second baffle 602, and a protective frame 609 is also provided inside the crushing box 1 to protect the swing plate 611. A blocking block is also provided at the bottom of the second baffle 602 to limit the third baffle 603. The blocking block limits the third baffle 603 to the second baffle 602, preventing the third baffle 603 from falling out of the second baffle 602 when it moves. The protective rubber strip 604 blocks the gap between the second baffle 602 and the first baffle 601 when the second baffle 602 is bent, preventing raw materials from entering the gap between the first baffle 601 and the second baffle 602.

[0041] When material is released from the feed box 2, the telescopic end of the electric hydraulic rod 610 pushes the swing plate 611 to rise and fall. The secondary rack 614 limits the secondary gear 6122, causing the swing plate 611 to rotate along the axis of the secondary gear 6122. The swing plate 611 drives the main gear 6121 to rotate, and the main gear 6121 drives the main rack 613 meshing with it to rise and fall. The main rack 613 drives the first baffle 601 to rise and fall through the support rod 605. The first baffle 601 drives the second baffle 602 and the third baffle 603 to rise and fall inside the feed box 2. Through the gap formed by the first baffle 601, the second baffle 602, and the third baffle 603 and the inverted trapezoidal feed box 2, the material inside the feed box 2 is fed intermittently or continuously. Rotating the adjustment knob causes the adjustment knob to drive the threaded rod 617 to rotate, and the threaded rod 617 engages with the threaded hole. The threaded rod 617 drives the nut 624 to move vertically up and down. The nut 624 drives the secondary rack 614 to move vertically up and down. The secondary rack 614 drives the secondary gear 6122 meshing with it to rotate. Adjusting the axis position of the secondary gear 6122 causes the axis of the secondary gear 6122 to rise and fall, thereby adjusting the angular velocity of the swing plate 611 when it rotates, and thus adjusting the amplitude of the support rod 605's rise and fall. At the same time, when the main rack 613 moves vertically downward, the main rack 613 drives the connecting frame 618 to move downward. The connecting frame 618 drives the transmission rack 619 to rise and fall. The rise and fall of the transmission rack 619 drives the transmission gear 620 to rotate. The transmission gear 620 drives the fixed rod 622 to rotate through the extension rod 621. The fixed rod 622 drives the buffer plate 623 to rotate, causing the buffer plate 623 to change from a vertical state to an inclined state. The inclined buffer plate 623 can buffer the falling raw materials.

[0042] refer to Figure 7 , Figure 8 and Figure 9As shown, a stop mechanism is provided below the drive mechanism to control the rotation of the buffer plate 623. The stop mechanism includes a connecting frame 618 fixed at the end of the main rack 613 away from the main gear 6121. A transmission rack 619 is fixed at the end of the connecting frame 618 away from the main rack 613. Two fixing rods 622 are fixed to the outside of the two buffer plates 623. A transmission gear 620 that meshes with the transmission rack 619 is provided between the two fixing rods 622. When the main rack 613 rises vertically, the main rack 613 drives the connecting frame 618 to rise and fall, and the connecting frame 618 drives the transmission rack 619 to rise and fall.

[0043] refer to Figure 9 and Figure 10 As shown, a positioning plate 625 is also fixed inside the crushing box 1. The transmission gear 620 is rotatably installed on the lower half of the positioning plate 625, and an extension rod 621 is fixed in the middle of the transmission gear 620. The two ends of the extension rod 621 are respectively fixed to two fixed rods 622. The transmission rack 619 lifts and lowers to drive the transmission gear 620 to rotate. The transmission gear 620 drives the fixed rod 622 to rotate through the extension rod 621. The fixed rod 622 drives the buffer plate 623 to rotate, so that the buffer plate 623 changes from an inclined state to a vertical state.

[0044] refer to Figure 11 and Figure 12 As shown, a clamping plate 627 is also sleeved on the outside of the support rod 605. Two support rods 608 are fixed on the outside of the clamping plate 627. A sliding rod 607 is provided between the two support rods 608 and the two third baffles 603. The bottom of the sliding rod 607 is sleeved on the outer wall of the support rod 608. The clamping plate 627 is fixed in the lower half of the feed box 2. The support rod 605 passes through the clamping plate 627 and is fixed to the main rack 613.

[0045] refer to Figure 11 and Figure 12 As shown, a lifting cylinder 606 is sleeved on the top of the sliding rod 607. The top of the lifting cylinder 606 is hinged to the bottom of the third baffle 603. A diagonal rod 626 is also hinged between the sliding rod 607 and the first baffle 601. When the support rod 605 drives the first baffle 601 to move downward, the first baffle 601 drives the end of the diagonal rod 626 that is hinged to the first baffle 601 to move downward, so that the diagonal rod 626 pushes the lifting cylinder 606 to move laterally. The lifting cylinder 606 drives the sliding rod 607 to move along the outer wall of the support rod 608. At the same time, the lifting cylinder 606 drives the third baffle 603 to move outside the second baffle 602. The lifting cylinder 606 and the sliding rod 607 cooperate to provide support force to the third baffle 603, so that the third baffle 603 changes from an inclined state to a horizontal state, thus closing the feed box 2.

[0046] By adopting the above technical solution:

[0047] When the support rod 605 moves the first baffle 601 downward, the first baffle 601 moves the end of the inclined rod 626 that is hinged to the first baffle 601 downward, causing the inclined rod 626 to push the lifting cylinder 606 to move laterally. The lifting cylinder 606 moves the sliding rod 607 along the outer wall of the support rod 608. At the same time, the lifting cylinder 606 moves the third baffle 603 to the outside of the second baffle 602. The lifting cylinder 606 and the sliding rod 607 cooperate to provide support force to the third baffle 603, so that the third baffle 603 changes from an inclined state to a horizontal state, thus closing the feed box 2.

[0048] Working principle:

[0049] When material is released from the feed box 2, the telescopic end of the electric hydraulic rod 610 pushes the swing plate 611 to rise and fall. The secondary rack 614 limits the secondary gear 6122, causing the swing plate 611 to rotate along the axis of the secondary gear 6122. The swing plate 611 drives the main gear 6121 to rotate, and the main gear 6121 drives the main rack 613 meshing with it to rise and fall. The main rack 613 drives the first baffle 601 to rise and fall through the support rod 605. The first baffle 601 drives the second baffle 602 and the third baffle 603 to rise and fall inside the feed box 2. Through the gap formed by the first baffle 601, the second baffle 602, and the third baffle 603 and the inverted trapezoidal feed box 2, the material inside the feed box 2 is fed intermittently or continuously. Rotating the adjustment knob causes the adjustment knob to drive the threaded rod 617 to rotate, and the threaded rod 617 engages with the threaded hole. The threaded rod 617 drives the nut 624 to move vertically up and down. The nut 624 drives the secondary rack 614 to move vertically up and down. The secondary rack 614 drives the secondary gear 6122 meshing with it to rotate. Adjusting the axis position of the secondary gear 6122 causes the axis of the secondary gear 6122 to rise and fall, thereby adjusting the angular velocity of the swing plate 611 when it rotates, and thus adjusting the range of rise and fall of the support rod 605. At the same time, when the main rack 613 moves vertically downward, the main rack 613 drives the connecting frame 618 to move downward. The connecting frame 618 drives the transmission rack 619 to rise and fall. The transmission rack 619 drives the transmission gear 620 to rotate. The transmission gear 620 drives the fixed rod 622 to rotate through the extension rod 621. The fixed rod 622 drives the buffer plate 623 to rotate, so that the buffer plate 623 changes from a vertical state to an inclined state. The inclined buffer plate 623 can buffer the falling raw materials.

[0050] When the support rod 605 moves the first baffle 601 downward, the first baffle 601 moves the end of the inclined rod 626 that is hinged to the first baffle 601 downward, causing the inclined rod 626 to push the lifting cylinder 606 to move laterally. The lifting cylinder 606 moves the sliding rod 607 along the outer wall of the support rod 608. At the same time, the lifting cylinder 606 moves the third baffle 603 to the outside of the second baffle 602. The lifting cylinder 606 and the sliding rod 607 cooperate to provide support force to the third baffle 603, so that the third baffle 603 changes from an inclined state to a horizontal state, thus closing the feed box 2.

[0051] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An energy-saving crushing and grinding device for processing iron concentrate, comprising a crushing box, a feed box for discharging material fixed to the top of the crushing box, and a discharge box for discharging material arranged below the crushing box; the interior of the crushing box is further provided with crushing rollers and crushing plates for processing iron concentrate raw materials, characterized in that, A feeding mechanism for controlling the feeding speed is provided between the crushing box and the feeding box. The feeding mechanism includes a first baffle provided inside the feeding box, second baffles provided on both sides of the first baffle, a third baffle inserted inside the second baffle, two buffer plates for buffering the raw materials provided below the first baffle, and a drive mechanism for controlling its lifting and lowering provided below the first baffle. A material blocking mechanism for controlling the rotation of the buffer plates is provided below the drive mechanism. The drive mechanism includes a threaded rod disposed inside the crushing box and a support rod fixed to the bottom of the first baffle. A main rack is fixed to the bottom of the support rod, and a secondary rack is disposed to the bottom of the threaded rod. A swing plate is disposed on the side of the main rack and the secondary rack facing each other. An electric hydraulic rod is also disposed between the swing plate and the crushing box. Both ends of the swing plate are fixed with a main gear and a secondary gear that mesh with the main rack and the secondary rack. The material blocking mechanism includes a connecting frame fixed to the end of the main rack away from the main gear, a transmission rack fixed to the end of the connecting frame away from the main rack, two fixed rods fixed to the outside of the two buffer plates, and a transmission gear meshing with the transmission rack between the two fixed rods.

2. The energy-saving crushing and grinding device for iron concentrate processing according to claim 1, characterized in that, A nut is fixed to the side of the secondary rack away from the swing plate. A threaded hole that matches the threaded rod is opened in the middle of the nut. A limit rod is also fixed to the bottom of the side of the secondary rack away from the swing plate. A limit sleeve is fitted on the top of the limit rod.

3. The energy-saving crushing and grinding device for iron concentrate processing according to claim 2, characterized in that, The crushing box is also equipped with a positioning plate. A transmission gear is rotatably installed on the lower half of the positioning plate, and an extension rod is fixed in the middle of the transmission gear. The two ends of the extension rod are respectively fixed to two fixed rods.

4. The energy-saving crushing and grinding device for iron concentrate processing according to claim 2, characterized in that, The support rod is also fitted with a retaining plate, and two support rods are fixed to the outside of the retaining plate. A sliding rod is provided between each of the two support rods and the two third baffles.

5. The energy-saving crushing and grinding device for processing iron concentrate according to claim 4, characterized in that, The top of the slide rod is fitted with a lifting cylinder, the top of the lifting cylinder is hinged to the bottom of the third baffle, and a diagonal rod is also hinged between the slide rod and the first baffle.

6. The energy-saving crushing and grinding device for iron concentrate processing according to claim 2, characterized in that, A protective rubber strip is fixed between the first baffle and the second baffle, and a protective frame is also provided inside the crushing box to protect the swing plate. A blocking block is also provided at the bottom of the second baffle to limit the movement of the third baffle.

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