Energy-saving crushing and grinding device for fine iron powder processing

Abstract

The invention relates to the technical field of crushing and grinding devices, in particular to an energy-saving crushing and grinding device for fine iron powder processing, which comprises a crushing box, a feeding box for blanking is fixed at the top of the crushing box, and a discharging box for discharging is arranged below the crushing box; a crushing roller and a crushing plate which are used for processing fine iron powder raw materials are further arranged in the crushing box, and a discharging mechanism which is used for controlling the discharging speed is arranged between the crushing box and the feeding box; through cooperation of the discharging mechanism, the driving mechanism, the material blocking mechanism, the first baffle, the second baffle, the third baffle, the buffer plate and other structures, intermittent segmented discharging or continuous discharging of blocky raw materials is achieved, and the multiple stages of baffles and the buffer plate are used for forming a stepped flow guide channel; when falling, materials are primarily divided through the first baffle, corrected in direction through the second baffle and attenuated in speed through the third baffle in sequence, so that the materials are in smooth contact with the crushing roller at the preset track and speed, and the damage risk caused by direct impact is eliminated from the source.

Description

Technical Field

[0001] The present invention relates to the technical field of crushing and grinding devices, in particular to an energy-saving crushing and grinding device for processing iron ore concentrate. Background Art

[0002] Fine iron powder is an iron powder product that has been processed through processes such as mineral processing and purification. Its iron content is usually above 60%, and high-quality fine iron powder can reach above 70%. It is an important raw material in the steel industry, foundry industry and other fields. Fine iron powder is a mineral powder made by crushing, grinding, and mineral processing of iron ore. When producing and processing fine iron powder, corresponding equipment is needed to carry out crushing and grinding.

[0003] Although the existing crushing and grinding device can achieve uniform transportation of bulk raw materials into the grinding box, the bulk raw materials fall freely under the action of gravity at the moment the raw materials enter the grinding box, and directly hit the surface of the crushing roller without transition buffering. The high-frequency impact can easily cause the crushing teeth of the crushing roller to be damaged such as cracking, curling or deformation, seriously affecting the service life and crushing accuracy of the crushing components. Therefore, we propose an energy-saving crushing and grinding device for iron ore concentrate processing. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides an energy-saving crushing and grinding device for processing iron ore concentrate.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: An energy-saving crushing and grinding device for processing iron ore concentrate, comprising a crushing box, a feed box for unloading fixed on the top of the crushing box, and a discharge box for discharging provided below the crushing box, and crushing rollers and crushing plates for processing the iron ore concentrate raw materials are also provided inside the crushing box, and a unloading mechanism for controlling the unloading speed is provided between the crushing box and the feed box, and the unloading mechanism comprises a first baffle provided inside the feed box, second baffles are provided on both sides of the first baffle, and a third baffle is inserted inside the second baffle, and two buffer plates for buffering the raw materials are also provided below the first baffle, and a driving mechanism for controlling the lifting and lowering of the first baffle is also provided below the driving mechanism, and a material blocking mechanism for controlling the rotation of the buffer plate is provided below the driving mechanism.

[0006] As a preferred technical solution of the present invention, the driving mechanism includes a threaded rod arranged 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, a secondary rack is arranged at the bottom of the threaded rod, a swing plate is arranged on the side facing each other of the main rack and the secondary rack, an electric hydraulic rod is also arranged between the swing plate and the crushing box, and a main gear and a secondary gear meshing with the main rack and the secondary rack are fixed at both ends of the swing plate, the main gear meshes with the main rack, and the secondary gear meshes with the secondary rack, the telescopic end of the electric hydraulic rod is rotatably connected to the middle of the swing plate, the threaded rod is rotatably installed inside the crushing box, and the top of the threaded rod penetrates An adjusting button is fixed after passing through the crushing box. The bottom of the support rod extends to the inside 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, and the secondary rack limits the secondary gear, so that the swing plate rotates along the axis of the secondary gear. The swing plate drives the main gear to rotate, and the main gear drives the main rack engaged with it to rise and fall. The main rack drives the first baffle to rise and fall through the support rod, and the first baffle drives the second baffle and the third baffle to rise and fall inside the feed box. The material inside the feed box is intermittently or continuously discharged through the gap formed by the first baffle, the second baffle and the third baffle and the inverted trapezoidal feed box.

[0007] As a preferred technical solution of the present invention, a nut is fixed on the side of the auxiliary rack away from the swing plate, a threaded hole adapted to the threaded rod is opened in the middle of the nut, and a limit rod is also fixed to the bottom of the side of the auxiliary rack away from the swing plate, and a limit sleeve is sleeved on the top of the limit rod, and the top of the limit sleeve is fixed to the inner wall of the crushing box. The adjusting knob is rotated to drive the threaded rod to rotate, and the threaded rod cooperates with the threaded hole, so that the threaded rod drives the nut to move vertically up and down, and the nut drives the auxiliary rack to move vertically up and down, and the auxiliary rack drives the auxiliary gear meshing with it to rotate, and the axial center position of the auxiliary gear is adjusted to make the axial center of the auxiliary gear rise and fall.

[0008] As a preferred technical solution of the present invention, the material blocking mechanism includes a connecting frame fixed to the end of the main rack away from the main gear, a transmission rack is fixed to the end of the connecting frame away from the main rack, two fixed rods are fixed to the outside of the two buffer plates, and a transmission gear meshing with the transmission rack is arranged 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.

[0009] As a preferred technical solution of the present invention, a positioning plate is also fixed inside the crushing box, and the transmission gear is rotatably installed on the lower half of the positioning plate, and 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 the two fixed rods. When the transmission rack is raised or lowered, the transmission rack drives the transmission gear to rotate, and the transmission gear drives the fixed rod to rotate through the extension rod, and the fixed rod drives the buffer plate to rotate, so that the buffer plate changes from an inclined state to a vertical state.

[0010] As a preferred technical solution of the present invention, the outside of the support rod is also provided with a card plate, and two support rods are fixed on the outside of the card plate. Sliding rods are 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, and the card plate is fixed to the lower half of the feed box. The support rod passes through the card plate and is fixed to the main rack.

[0011] As a preferred technical solution of the present invention, a lifting cylinder is sleeved on the top of the sliding rod, and 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 hinged to the first baffle to move downward, so that the inclined rod pushes the lifting cylinder to move horizontally, and 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 toward the outside of the second baffle. The lifting cylinder and the sliding rod cooperate to provide supporting force for the third baffle, so that the third baffle is changed from an inclined state to a horizontal state, and the feed box is closed.

[0012] As a preferred technical solution 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 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 to prevent the third baffle from falling off from the second baffle during movement. The gap generated by the second baffle and the first baffle when it is bent is blocked by the protective rubber strip to prevent raw materials from entering the gap between the first baffle and the second baffle.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes intermittent segmented or continuous unloading of bulk raw materials through the coordination of a material unloading mechanism, a driving mechanism, a material blocking mechanism, a first baffle, a second baffle, a third baffle and a buffer plate. A stepped guide channel is formed by using multi-stage baffles and buffer plates. When the material falls, it is initially diverted by the first baffle, directional-corrected by the second baffle, and attenuated by the third baffle. Finally, the buffer plate absorbs the residual impact force, allowing the material to smoothly contact the crushing roller at a preset trajectory and speed, thereby eliminating the risk of damage caused by direct impact at the source. The present invention realizes precise adjustment of the secondary gear axis position through the cooperation of structures such as the threaded rod, nut, secondary rack, swing plate, limit rod and limit sleeve. When the secondary gear axis position changes, its meshing radius with the main gear changes. Through the dynamic adjustment of the gear transmission ratio, the angular velocity of the swing plate during rotation is precisely controlled. The change in the angular velocity of the swing plate is directly converted into the difference in the lifting range of the support rod, and finally the multi-level adjustment of the baffle inclination angle is realized to meet the material processing requirements under different working conditions. The present invention uses the coordination of the electric hydraulic rod, swing plate, main gear, sub-gear, main rack, sub-rack and limit 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, the direction is corrected by the second baffle, and the speed is attenuated by the third baffle, ensuring that the material enters the crushing box evenly and slowly, thereby improving the material processing accuracy and further reducing the risk of equipment damage. The present invention uses a protective rubber strip to block the gap between the second baffle and the first baffle when the second baffle is bent. Under the action of its own elastic tension, the protective rubber strip always closely adheres to the side of the first baffle, forming a dynamic sealing barrier. It can block the gap between the two baffles caused by relative movement in real time, preventing blocky raw materials and fine particles from being embedded in the gap between the first and second baffles. The present invention coordinates the structures such as the electric hydraulic rod, the swing plate, the main gear, the auxiliary gear, the main rack, the auxiliary rack and the limit rod, so that the first baffle, the second baffle and the third baffle are arranged 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 to achieve complete sealing of the feed box. The present invention enables the third baffle to slide inside the second baffle through the coordination of structures such as the second baffle, the third baffle, the lifting cylinder, the sliding rod and the support rod. When the lifting cylinder retracts, the third baffle retracts into the second baffle. According to the material characteristics and production requirements, the opening and closing degree and the inclination angle of the channel are precisely controlled, thereby flexibly adjusting the unloading speed of the feed box. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 Schematic diagram of the cross-sectional structure of the crushing box of the present invention; Figure 3 It is a structural schematic diagram of the blanking mechanism of the present invention; Figure 4 Schematic diagram of the structure of the first baffle of the present invention; Figure 5 It is a structural schematic diagram of the support rod of the present invention; Figure 6 Schematic diagram of the structure of the third baffle of the present invention; Figure 7 Schematic diagram of the structure of the main rack of the present invention; Figure 8 It is a structural schematic diagram of the swing plate of the present invention; Figure 9 It is a structural schematic diagram of the connecting frame of the present invention; Figure 10 This is a schematic structural diagram of the buffer plate of the present invention; Figure 11 Schematic diagram of the structure of the slide bar of the present invention; Figure 12 It is a structural schematic diagram of the oblique rod of the present invention.

[0015] Among them: 1. Crushing box; 2. Feed box; 3. Discharge box; 4. Crushing roller; 5. Crushing plate; 6. Unloading mechanism; 601. First baffle; 602. Second baffle; 603. Third baffle; 604. Protective rubber strip; 605. Support rod; 606. Lifting cylinder; 607. Sliding rod; 608. Support rod; 609. Protective frame; 610. Electric hydraulic rod; 611. Swing plate; 6121. Main gear; 6122. Sub-gear; 613. Main rack; 614. Sub-rack; 615. Limit rod; 616. Limit sleeve; 617. Threaded rod; 618. Connecting frame; 619. Transmission rack; 620. Transmission gear; 621. Extension rod; 622. Fixed rod; 623. Buffer plate; 624. Nut; 625. Positioning plate; 626. Inclined rod; 627. Card. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, purpose and efficacy of the present invention easy to understand, the present invention is further described below in conjunction with specific examples, but the following examples are only preferred embodiments of the present invention, not all. Based on the examples in the embodiments, other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention. The experimental methods in the following examples, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following examples, unless otherwise specified, can be obtained from commercial channels.

[0017] Embodiment: The present invention provides Figure 1 and Figure 2 An energy-saving crushing and grinding device for processing iron ore concentrate is shown, which includes a crushing box 1, a feed box 2 for unloading is fixed on the top of the crushing box 1, and a discharge box 3 for discharging is arranged below the crushing box 1. The interior of the crushing box 1 is also provided with crushing rollers 4 and crushing plates 5 for processing the iron ore concentrate raw materials.

[0018] As can be seen from the above, when in use, the block-shaped iron ore concentrate raw materials to be processed are put into the feed box 2. After the block-shaped iron ore concentrate raw materials inside the feed box 2 enter the crushing box 1, the block-shaped iron ore concentrate raw materials are ground and crushed by the crushing rollers 4 and the crushing plates 5, and the processed materials are discharged through the discharge box 3.

[0019] refer to Figure 2 、 Figure 3 and Figure 4As shown, a feeding mechanism 6 for controlling the feeding speed is provided between the crushing box 1 and the feed box 2, and the feeding mechanism 6 includes a first baffle 601 provided inside the feed box 2, second baffles 602 are provided on both sides of the first baffle 601, a third baffle 603 is inserted inside the second baffle 602, and two buffer plates 623 for buffering the raw materials are provided below the first baffle 601, and a driving mechanism for controlling the lifting and lowering of the first baffle 601 is also provided below the first baffle 601.

[0020] refer to Figure 4 、 Figure 5 and Figure 6 As shown, the driving mechanism includes a threaded rod 617 arranged inside the crushing box 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, a sub-rack 614 is arranged at the bottom of the threaded rod 617, a swing plate 611 is arranged on the side facing each other of the main rack 613 and the sub-rack 614, an electric hydraulic rod 610 is also arranged between the swing plate 611 and the crushing box 1, and a main gear 6121 and a sub-gear 6122 meshing with the main rack 613 and the sub-rack 614 are fixed at both ends of the swing plate 611, the main gear 6121 meshes with the main rack 613, and the sub-gear 6122 meshes with the sub-rack 614, the telescopic end of the electric hydraulic rod 610 is rotatably connected to the middle part of the swing plate 611, the threaded rod 617 is rotatably installed inside the crushing box 1, and the top of the threaded rod 617 passes through the crushing box 1. An adjusting button is fixed behind the crushing box 1. The bottom of the support rod 605 extends to the inside 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, and the secondary rack 614 limits the secondary gear 6122, so that the swing plate 611 rotates 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 meshed 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. The gap formed by the first baffle 601, the second baffle 602 and the third baffle 603 and the inverted trapezoidal feed box 2 is used to intermittently or continuously discharge the material inside the feed box 2.

[0021] refer to Figure 4 、 Figure 5 and Figure 6As shown, a nut 624 is fixed on the side of the auxiliary rack 614 away from the swing plate 611, and a threaded hole is opened in the middle of the nut 624 to match the threaded rod 617, and a limiting rod 615 is fixed to the bottom of the side of the auxiliary rack 614 away from the swing plate 611. The top of the limiting rod 615 is sleeved with a limiting sleeve 616, and the top of the limiting sleeve 616 is fixed to the inner wall of the crushing box 1. The adjusting knob is rotated to make the adjusting knob drive the threaded rod 617 to rotate, and the threaded rod 617 cooperates with the threaded hole, so that the threaded rod 617 drives the nut 624 to move vertically up and down, and the nut 624 drives the auxiliary rack 614 to move vertically up and down, and the auxiliary rack 614 drives the auxiliary gear 6122 meshing with it to rotate, and the axial center position of the auxiliary gear 6122 is adjusted to make the axial center of the auxiliary gear 6122 rise and fall.

[0022] refer to Figure 6 As shown, a protective rubber strip 604 is fixed between the first baffle 601 and the second baffle 602, and a protective frame 609 is provided inside the crushing box 1 to protect the swing plate 611. A blocking block is provided at the bottom of the second baffle 602 to limit the third baffle 603. The blocking block limits the third baffle 603, so that the third baffle 603 limits the second baffle 602 to prevent the third baffle 603 from falling off from the second baffle 602 when moving. 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, so as to prevent the raw materials from entering the gap between the first baffle 601 and the second baffle 602.

[0023] When the material inside the feed box 2 is released, the telescopic end of the electric hydraulic rod 610 pushes the swing plate 611 to move up and down, and the secondary rack 614 limits the secondary gear 6122, so that the swing plate 611 rotates along the axis of the secondary gear 6122, and the swing plate 611 drives the main gear 6121 to rotate, and the main gear 6121 drives the main rack 613 engaged with it to move up and down, and the main rack 613 drives the first baffle 601 to move up and down through the support rod 605, and the first baffle 601 drives the second baffle 602 and the third baffle 603 to move up and down inside the feed box 2, and the gap formed by the first baffle 601, the second baffle 602 and the third baffle 603 and the inverted trapezoidal feed box 2 is used to perform intermittent or continuous unloading of the material inside the feed box 2, and the adjusting knob is rotated to make the adjusting knob drive the threaded rod 617 to rotate, and the threaded rod 617 cooperates with the threaded hole. The threaded rod 617 drives the nut 624 to move vertically up and down, and the nut 624 drives the secondary rack 614 to move vertically up and down, and the secondary rack 614 drives the secondary gear 6122 meshing with it to rotate, and adjusts the axial position of the secondary gear 6122, so that the axial center of the secondary gear 6122 is lifted and lowered, thereby adjusting the angular velocity of the swing plate 611 during rotation, and then adjusting the lifting amplitude 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, and the connecting frame 618 drives the transmission rack 619 to move up and down. The transmission rack 619 moves up and down, driving the transmission gear 620 to rotate, and the transmission gear 620 drives the fixed rod 622 to rotate through the extension rod 621, and 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, and the buffer plate 623 in the inclined state can buffer the falling raw materials.

[0024] refer to Figure 7 、 Figure 8 and Figure 9 As shown, a material blocking mechanism for controlling the rotation of the buffer plate 623 is provided below the driving mechanism, and the material blocking mechanism includes a connecting frame 618 fixed to the end of the main rack 613 away from the main gear 6121, and a transmission rack 619 is fixed to the end of the connecting frame 618 away from the main rack 613, and two fixed rods 622 are fixed to the outside of the two buffer plates 623, and a transmission gear 620 meshing with the transmission rack 619 is provided between the two fixed 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.

[0025] refer to Figure 9 and Figure 10As shown, a positioning plate 625 is also fixed inside the crushing box 1, and a transmission gear 620 is rotatably installed on the lower half of the positioning plate 625, and an extension rod 621 is also fixed in the middle of the transmission gear 620, and the two ends of the extension rod 621 are respectively fixed to two fixed rods 622. The transmission rack 619 is raised and lowered to drive the transmission gear 620 to rotate, and the transmission gear 620 drives the fixed rod 622 to rotate through the extension rod 621, and 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.

[0026] refer to Figure 11 and Figure 12 As shown, a clamping plate 627 is also sleeved on the outside of the support rod 605, and two support rods 608 are fixed on the outside of the clamping plate 627. Slide rods 607 are provided between the two support rods 608 and the two third baffles 603. The bottom of the slide rod 607 is sleeved on the outer wall of the support rod 608, and the clamping plate 627 is fixed to 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.

[0027] refer to Figure 11 and Figure 12 As shown, a lifting cylinder 606 is sleeved on the top of the slide rod 607, and the top of the lifting cylinder 606 is hinged to the bottom of the third baffle 603, and an inclined rod 626 is also hinged between the slide 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 inclined rod 626 to move downward at one end hinged to the first baffle 601, so that the inclined rod 626 pushes the lifting cylinder 606 to move horizontally, and the lifting cylinder 606 drives the slide 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 toward the outside of the second baffle 602. The lifting cylinder 606 cooperates with the slide rod 607 to provide support force for the third baffle 603, so that the third baffle 603 changes from an inclined state to a horizontal state, and the feed box 2 is closed.

[0028] By adopting the above technical solutions: When the support rod 605 drives the first baffle 601 to move downward, the first baffle 601 drives the oblique rod 626 to move downward at one end hinged to the first baffle 601, so that the oblique rod 626 pushes the lifting cylinder 606 to move horizontally, and 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 toward the outside of the second baffle 602. The lifting cylinder 606 and the sliding rod 607 cooperate to provide support force for the third baffle 603, so that the third baffle 603 changes from an inclined state to a horizontal state, and the feed box 2 is closed.

[0029] Working principle: When the material inside the feed box 2 is released, the telescopic end of the electric hydraulic rod 610 pushes the swing plate 611 to move up and down, and the secondary rack 614 limits the secondary gear 6122, so that the swing plate 611 rotates along the axis of the secondary gear 6122, and the swing plate 611 drives the main gear 6121 to rotate, and the main gear 6121 drives the main rack 613 engaged with it to move up and down, and the main rack 613 drives the first baffle 601 to move up and down through the support rod 605, and the first baffle 601 drives the second baffle 602 and the third baffle 603 to move up and down inside the feed box 2, and the gap formed by the first baffle 601, the second baffle 602 and the third baffle 603 and the inverted trapezoidal feed box 2 is used to perform intermittent or continuous unloading of the material inside the feed box 2, and the adjusting knob is rotated to make the adjusting knob drive the threaded rod 617 to rotate, and the threaded rod 617 cooperates with the threaded hole. The threaded rod 617 drives the nut 624 to move vertically up and down, and the nut 624 drives the secondary rack 614 to move vertically up and down, and the secondary rack 614 drives the secondary gear 6122 meshing with it to rotate, and adjusts the axial position of the secondary gear 6122, so that the axial center of the secondary gear 6122 is lifted and lowered, thereby adjusting the angular velocity of the swing plate 611 during rotation, and then adjusting the lifting amplitude 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, and the connecting frame 618 drives the transmission rack 619 to move up and down, and the transmission rack 619 drives the transmission gear 620 to rotate, and the transmission gear 620 drives the fixed rod 622 to rotate through the extension rod 621, and 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, and the buffer plate 623 in the inclined state can buffer the falling raw materials; When the support rod 605 drives the first baffle 601 to move downward, the first baffle 601 drives the oblique rod 626 to move downward at one end hinged to the first baffle 601, so that the oblique rod 626 pushes the lifting cylinder 606 to move horizontally, and 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 toward the outside of the second baffle 602. The lifting cylinder 606 and the sliding rod 607 cooperate to provide support force for the third baffle 603, so that the third baffle 603 changes from an inclined state to a horizontal state, and the feed box 2 is closed.

[0030] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but 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 ore concentrate, comprising a crushing box, a feed box for feeding fixed on the top of the crushing box, a discharge box for discharging provided below the crushing box, and crushing rollers and crushing plates for processing the iron ore concentrate raw materials provided inside the crushing box, characterized in that: A feeding mechanism for controlling the feeding speed is provided between the crushing box and the feeding box, and the feeding mechanism includes a first baffle provided inside the feeding box, a second baffle provided on both sides of the first baffle, a third baffle inserted inside the second baffle, and two buffer plates for buffering the raw materials are provided below the first baffle, and a driving mechanism for controlling the lifting and lowering of the first baffle is provided below the first baffle, and a feeding mechanism for controlling the rotation of the buffer plate is provided below the driving mechanism.

2. The energy-saving crushing and grinding device for processing iron ore concentrate according to claim 1, characterized in that: The driving mechanism includes a threaded rod arranged 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, a secondary rack is provided at the bottom of the threaded rod, a swing plate is provided on the side facing each other of the main rack and the secondary rack, an electric hydraulic rod is also provided between the swing plate and the crushing box, and a main gear and a secondary gear meshing with the main rack and the secondary rack are fixed at both ends of the swing plate.

3. The energy-saving crushing and grinding device for processing iron ore concentrate according to claim 2, characterized in that: A nut is fixed on the side of the auxiliary rack away from the swing plate, and a threaded hole is opened in the middle of the nut to match the threaded rod. A limiting rod is also fixed on the bottom of the side of the auxiliary rack away from the swing plate, and a limiting sleeve is sleeved on the top of the limiting rod.

4. The energy-saving crushing and grinding device for processing iron ore concentrate according to claim 2, characterized in that: The material blocking mechanism includes a connecting frame fixed to the end of the main rack away from the main gear, a transmission rack is fixed to the end of the connecting frame away from the main rack, two fixing rods are fixed to the outside of the two buffer plates, and a transmission gear meshing with the transmission rack is arranged between the two fixing rods.

5. The energy-saving crushing and grinding device for processing iron ore concentrate according to claim 4, characterized in that: A positioning plate is also fixed inside the crushing box, and a transmission gear is rotatably mounted on the lower half of the positioning plate. An extension rod is also fixed in the middle of the transmission gear, and both ends of the extension rod are respectively fixed to the two fixing rods.

6. The energy-saving crushing and grinding device for processing iron ore concentrate according to claim 2, characterized in that: The outside of the support rod is also sleeved with a clamping plate, and two support rods are fixed on the outside of the clamping plate. Sliding rods are arranged between the two support rods and the two third baffles.

7. The energy-saving crushing and grinding device for processing iron ore concentrate according to claim 6, characterized in that: The top of the slide rod is sleeved with a lifting cylinder, the top of the lifting cylinder is hinged to the bottom of the third baffle, and an oblique rod is hinged between the slide rod and the first baffle.

8. The energy-saving crushing and grinding device for processing iron ore concentrate 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 provided inside the crushing box to protect the swing plate. A blocking block is provided at the bottom of the second baffle to limit the third baffle.

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