Raw material conveying assembly for alumina production

Abstract

The application relates to the technical field of conveying equipment, in particular to a raw material conveying assembly for alumina production, which comprises a main conveying belt and an auxiliary conveying belt, and the two are attached and obliquely installed through a supporting assembly; the main conveying belt is located at the bottom and is used for conveying broken bauxite to a screening machine; the auxiliary conveying belt is located at the top and is used for receiving and returning oversized materials separated by the screening machine, and simultaneously covers the main conveying belt as a dustproof mechanism; side eaves plates are arranged on the main conveying belt and the auxiliary conveying belt, and main push plates and auxiliary push plates are respectively and separately arranged on the side eaves plates of the two; the auxiliary push plate is of a hollow structure, and guide grooves are arranged on the two sides of the auxiliary push plate; a retractable sealing plate is installed in the guide grooves through a support, and a retracting piece is connected to the bottom of the support; a magnetic base is arranged at the bottom of the auxiliary conveying belt; when the auxiliary push plate rotates to the attached position of the main push plate along with the auxiliary conveying belt, the magnetic base triggers the sealing plate to be retracted and be sealingly connected to the two sides of the main push plate; the purpose of dynamic sealing is achieved to reduce the dust raising during the conveying of the bauxite.

Description

Technical Field

[0001] This invention relates to the field of transportation equipment technology, specifically to a raw material conveying component for alumina production. Background Technology

[0002] In the alumina production process, conveying components are key equipment for the flow of raw materials and intermediates through various processing steps. Traditional conveying systems in the screening section after bauxite crushing mainly have the following problems: the open conveying design causes fine bauxite powder to scatter, and raw materials easily adhere to the surface and edges of the conveyor belt, resulting in both material waste and secondary pollution. In addition, the return process for unqualified materials often uses independent conveying equipment, which makes the system complex and energy-intensive.

[0003] Currently, in the Bayer process, bauxite requires pretreatment processes such as crushing, screening, and grinding. Current conveying equipment struggles to simultaneously meet the requirements of sealed conveying, automatic return, and self-cleaning. While some conveying equipment attempts to adopt enclosed conveying methods, the enclosed structure, being fixed to the conveyor equipment, cannot move synchronously with the conveyor belt. To meet the sealing requirements, it needs to be tightly fitted to the conveyor belt and other structures, causing wear on the conveyor belt. Conversely, if the fit is not tight, dust can easily be generated from both the inlet and outlet ends. Summary of the Invention

[0004] The purpose of this invention is to provide a raw material conveying component for alumina production, so as to achieve dynamic sealing to reduce dust generation during bauxite transportation, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a raw material conveying assembly for alumina production, comprising a main conveyor belt and a secondary conveyor belt, which are installed in a close-fitting, inclined manner through a support assembly;

[0006] The main conveyor belt is located at the bottom and is used to transport the crushed bauxite to the screening machine. The auxiliary conveyor belt is located at the top and is used to receive and return the oversized material separated by the screening machine. It also serves as a dustproof mechanism to cover the main conveyor belt.

[0007] Both the main and auxiliary conveyor belts are equipped with side eaves plates, and main push plates and auxiliary push plates are arranged at intervals on the side eaves plates respectively; the auxiliary push plate is a hollow structure with guide grooves on both sides, and a pop-out closed plate is installed in the guide groove through a bracket, and a pop-out component is connected to the bottom of the bracket;

[0008] The bottom of the auxiliary conveyor belt is equipped with a magnetic seat. When the auxiliary push plate rotates with the auxiliary conveyor belt to the position where it is in contact with the main push plate, the magnetic seat triggers the sealing plate to pop out and seal the connection between the two sides of the main push plate.

[0009] The top of the main conveyor belt is equipped with an auxiliary cleaning component driven by the main conveyor belt itself, including a rotating brush driven by a transmission mechanism and a lifting and striking mechanism. When the auxiliary push plate rotates with the auxiliary conveyor belt to the lifting and striking mechanism, the lifting and striking mechanism pushes the closing plate to retract.

[0010] Preferably, the main push plate and the auxiliary push plate are set in a one-to-one correspondence, so that they can fit together to form a dynamic and continuous sealing surface when the conveyor belt is running.

[0011] Preferably, the enclosed plate is slidably connected to the positioning seat on the outer wall of the side eaves plate through the limiting members at both ends of the bracket, and the positioning seat is provided with a spring pin with a magnetic component, and the limiting member is provided with a corresponding insertion hole.

[0012] The magnetic base can generate a magnetic attraction force on the magnetic component, causing the spring pin to be pulled out of the socket.

[0013] Preferably, the auxiliary cleaning component includes an extension plate fixed to the top of the main conveyor belt, a driven pulley mounted on the extension plate via a rotating shaft, and a drive pulley connected to an extension shaft on the main conveyor belt drive shaft. The two are linked by a belt to drive the rotating shaft to rotate.

[0014] Preferably, a ring of brushes extending into the screening machine is arranged on the rotating shaft to clean residual material from the surface of the main conveyor belt.

[0015] Preferably, a wheel is mounted on the extension shaft, and a top ball and a push rod above the top ball are arranged in a ring on the surface of the wheel.

[0016] Preferably, a lifting frame is installed on the main conveyor belt via a spring guide rod. The bottom plate of the lifting frame cooperates with the top ball and push rod on the rotating wheel to achieve intermittent lifting motion.

[0017] Preferably, a top plate is vertically installed on the lifting frame, and a striking element is provided in the middle of the top plate, which vibrates by striking the side eaves plate when the lifting frame moves.

[0018] Preferably, a locking rod is installed on the top plate. When the push rod lifts the lifting frame, the locking rod simultaneously pushes the limit component to reset, causing the closing plate to retract.

[0019] The spacing between the main push plates is matched with the rotation cycle of the rotary wheel to ensure that the displacement of one main push plate corresponds to one revolution of the rotary wheel.

[0020] Preferably, the connection between the auxiliary push plate and the side eaves plate is provided with a through groove covered by the auxiliary push plate, which allows the support to pass through while preventing dust leakage.

[0021] Preferably, the sealing plate can completely cover the guide groove in both the pop-up and retracted states to prevent dust from entering the cavity of the auxiliary push plate.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. This invention features a highly efficient dustproof sealing system. The conveying assembly adopts a double-layer structure design with main and auxiliary conveyor belts. The auxiliary conveyor belt also serves as a dust cover. It also has a main push plate and an auxiliary push plate, which, together with the sealing plate structure, can achieve dynamic sealing. It adopts a magnetic trigger sealing mechanism, and the sealing plate automatically adjusts the sealing state as the conveyor belt rotates, ensuring sealing while avoiding wear on the conveying structure.

[0024] 2. The conveyor belt of the present invention has a self-cleaning function. The brush cleaning device is driven by the conveyor belt itself and can be used in conjunction with the vibration and knocking mechanism to effectively reduce material residue, so as to prevent the conveyor belt from carrying out residual bauxite and forming dust. At the same time, in the auxiliary cleaning component, the state of the closed plate is precisely controlled by the linkage system of the rotating wheel and the lifting frame. The combination of push rod and top ball realizes multi-level action control, so that the retraction control of the closed plate can be realized during the working gap of the vibration and knocking structure.

[0025] 3. This invention enhances conveying stability by combining side eaves plates and push plates, reduces raw material waste and dust emissions, lowers energy consumption for cleaning and maintenance, reduces dust to extend equipment lifespan, protects transmission components, and provides a closed effect through the secondary conveyor belt while enabling the return of non-compliant bauxite, increasing the integration capability of the conveying components. Attached Figure Description

[0026] Figure 1 This is a first schematic diagram of the overall structure of the present invention.

[0027] Figure 2 This is a second schematic diagram of the overall structure of the present invention.

[0028] Figure 3 This is a schematic diagram of the main conveyor belt of the present invention.

[0029] Figure 4 This is a schematic diagram of the secondary conveyor belt structure of the present invention.

[0030] Figure 5 This is a schematic diagram of the closed plate structure of the present invention.

[0031] Figure 6 This is a schematic diagram of the mounting structure of the closed plate of the present invention.

[0032] Figure 7 This is a partial schematic diagram of the enclosed plate and support structure of the present invention.

[0033] Figure 8 This is a partial schematic diagram of the main conveyor belt structure of the present invention.

[0034] Figure 9 This is a schematic diagram of the brush structure of the present invention.

[0035] Figure 10 This is a schematic diagram of the lifting frame structure of the present invention.

[0036] In the diagram: 1. Main conveyor belt; 2. Secondary conveyor belt; 3. Side eaves plate; 4. Main push plate; 5. Secondary push plate; 6. Guide groove; 7. Support; 8. Enclosed plate; 9. Pop-out component; 10. Limiting component; 11. End; 12. Positioning seat; 13. Spring pin; 14. Magnetic component; 15. Magnetic seat; 16. Extension plate; 17. Extension shaft; 18. Rotating shaft; 19. Drive pulley; 20. Driven pulley; 21. Brush; 22. Rotary wheel; 23. Top ball; 24. Push rod; 25. Spring guide rod; 26. Lifting frame; 27. Base plate; 28. Top plate; 29. ​​Striking component; 30. Locking rod. Detailed Implementation

[0037] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1 to 10 The present invention provides a technical solution: a raw material conveying component for alumina production, which is used in an intelligent heat treatment production line for alumina processing. The conveying component is mainly used in the bauxite screening process to transport the crushed bauxite to the screening machine to obtain bauxite that meets the size requirements.

[0039] The transport assembly consists of a main conveyor belt 1 and an auxiliary conveyor belt 2, which are installed together by a support assembly. Both the main conveyor belt 1 and the auxiliary conveyor belt 2 are inclined. The main conveyor belt 1 is located at the bottom and can feed the crushed bauxite into the screening machine from below. The screening machine separates the bauxite through a screen. Bauxite that meets the size requirements is collected from the bottom of the screening machine, while bauxite that exceeds the size requirements is sent to the top of the auxiliary conveyor belt 2 by the vibration assembly in the screening machine. The auxiliary conveyor belt 2 then transports it to the bottom for recycling. During this process, the auxiliary conveyor belt 2 at the top covers the transport section of the main conveyor, reducing dust generated during the transport of bauxite and preventing dust from polluting the workshop environment. It also prevents dust from entering the power assembly of the conveyor belt and causing the conveyor belt to jam.

[0040] Both sides of the main conveyor belt 1 and the auxiliary conveyor belt 2 are provided with side eaves plates 3, which restrict the conveying space of the main conveyor belt 1 and the auxiliary conveyor belt 2. Furthermore, main push plates 4 are arranged on the side eaves plates 3 of the main conveyor belt 1, and auxiliary push plates 5 are arranged on the side eaves plates 3 of the auxiliary conveyor belt 2. The main push plates 4 and auxiliary push plates 5 further divide the conveying space and provide support and propulsion for the bauxite when the conveyor belt is tilted, ensuring that the bauxite can be transported smoothly.

[0041] In this invention, the main push plate 4 and the auxiliary push plate 5 are arranged in a one-to-one correspondence. During bauxite conveying, not only are the side plates 3 at the top of the main conveyor belt 1 and the bottom of the auxiliary conveyor belt 2 in contact with each other, but the main push plate 4 and the auxiliary push plate 5 can also be in contact with each other. The auxiliary push plate 5 has a hollow structure with guide grooves 6 on both sides. A bracket 7 is installed in the auxiliary push plate 5 through the guide grooves 6 and is limited in movement. A sealing plate is fixedly installed on both sides of the bracket 7. A spring-like ejector 9 is fixedly connected to the bottom of the bracket 7. The sealing plate can be in contact with both sides of the auxiliary push plate 5 without affecting the contact between the auxiliary push plate 5 and the main push plate 4. At this time, the ejector 9 is in a compressed state. After the main push plate 4 and the auxiliary push plate 5 are in contact with each other, the elasticity of the ejector 9 can eject the sealing plate 8. The two sealing plates 8 are connected to both sides of the main push plate 4, further enhancing the sealing ability of the main push plate 4 and the auxiliary push plate 5 and preventing dust on the main conveyor belt 1 from escaping into the space.

[0042] The sealing plate 8 can cover the guide groove 6 in both its retracted and extended states to prevent dust from entering the cavity of the auxiliary push plate 5. Simultaneously, a through groove is provided at the connection between the auxiliary push plate 5 and the side eaves plate 3 for the support 7 to pass through. This through groove is covered by the auxiliary push plate 5 to prevent dust from escaping from the side eaves plate 3. Limiting members 10 are connected to both ends of the support 7, and a positioning seat 12 is fixedly installed on the outer wall of the side eaves plate 3. The limiting member 10 is slidably connected in the positioning seat 12, and an end cap 11 is connected to the end of the limiting member 10. A spring pin 13 is provided on the side of the positioning seat 12, and an insertion hole is provided on the limiting member 10. The connection between the spring pin 13 and the insertion hole can fix the limiting member 10. The sealing plate 8 is fixed in the positioning seat 12. At this time, the sealing plate 8 is kept in the retracted state on both sides of the auxiliary push plate 5. The spring pin 13 is provided with a magnetic element 14. A magnetic seat 15 is installed at the bottom of the auxiliary conveyor belt 2 and on the auxiliary push plate 5 at the top of the auxiliary conveyor belt 2. The sealing plate 8 is kept in the retracted state. As the auxiliary conveyor belt 2 rotates, when the auxiliary push plate 5 rotates to the bottom and is in contact with the main push plate 4, it passes by the side of the magnetic seat 15. The magnetic force of the magnetic seat 15 can make the spring pin 13 disengage from the limiting element 10, thereby eliminating the restriction on the limiting element 10, the bracket 7 and the sealing plate 8. The sealing plate 8 can pop out and connect to both sides of the main push plate 4 to enhance the sealing effect of the main push plate 4 and the auxiliary push plate 5.

[0043] To ensure that all bauxite on the main conveyor belt 1 and auxiliary conveyor belt 2 enters the screening machine after closed-loop transportation, and to prevent residual bauxite from generating dust, an auxiliary cleaning component is installed at the top of the main conveyor belt 1. This component removes residual bauxite and drives the main conveyor belt 1 itself. Specifically, an extension plate 16 is fixedly installed at the top of the main conveyor belt 1, and a rotating shaft 18 is rotatably mounted on the extension plate 16. An extension shaft 17 is fixedly connected to the drive shaft at the top of the main conveyor belt 1, and a drive pulley 19 is connected to the extension shaft 17. A driven pulley 20 is connected to the rotating shaft 18. The drive pulley 19 and the driven pulley 20 are connected by a belt. When the main conveyor belt 1 rotates, it drives the rotating shaft 18 to rotate. A brush 21 is annularly mounted on the rotating shaft 18 and is located inside the screening machine. As it rotates, the brush 21 cleans the bauxite on the main conveyor belt 1 into the screening machine, preventing residue.

[0044] Furthermore, a rotating wheel 22 is installed on the extension shaft 17. A top ball 23 is annularly mounted on the rotating wheel 22, and a push rod 24 is also mounted on the rotating wheel 22 at a position higher than the top ball 23. When the rotating wheel 22 rotates, the top ball 23 and the push rod 24 can rotate continuously. At the same time, a spring guide rod 25 is provided on the main conveyor belt 1, and a lifting frame 26 is movably mounted through the spring guide rod 25. A base plate 27 is fixedly mounted on the lifting frame 26, and the base plate 27 is located above the rotating wheel 22. When the rotating wheel 22 rotates, the top ball 23 contacts the base plate 27, which allows the lifting frame 26 to move up and down intermittently. When the push rod 24 contacts the base plate 27, the lifting frame 26 can be raised to a higher height. A top plate 28 is vertically installed on the lifting frame 26. A striking element 29 is set in the middle of the top plate 28. During the up and down movement of the lifting frame 26, the striking element 29 is driven to continuously strike the side plates 3 of the main conveyor belt 1 and the auxiliary conveyor belt 2, causing the main conveyor belt 1 and the auxiliary conveyor belt 2 to vibrate locally in the screening machine, reducing the residue of bauxite on the two conveyor belts. The striking element 29 has a certain deformation capacity.

[0045] Meanwhile, a locking rod 30 is installed on the top plate 28. The present invention sets the spacing of the main push plates 4 on the main conveyor belt 1 accordingly, so that when the turntable 22 rotates once, the main push plate 4 can move one spacing with the main conveyor belt 1. When the push rod 24 on the turntable 22 lifts the lifting frame 26, the locking rod 30 on the top plate 28 moves to the position of the corresponding limiting member 10. The locking rod 30 can push the end 11, thereby pushing and re-fixing the limiting member 10 in the positioning seat 12, so that the closing plate 8 on the main push plate 4 retracts, so as to disengage from the auxiliary push plate 5 later. Since the height of the push rod 24 is higher than that of the top ball 23, the locking rod 30 can only push the end 11 when the push rod 24 contacts the bottom plate 27. When the top ball 23 contacts the bottom plate 27, the locking rod 30 will not move to the position of the end 11. Therefore, the working of the striking member 29 will not affect the closing of the closing plate 8.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A raw material conveying assembly for alumina production, characterized by: The main conveyor belt and the auxiliary conveyor belt are attachedly and obliquely installed through a support assembly; The main conveyor belt is located at the bottom for conveying the broken bauxite to a screening machine, and the auxiliary conveyor belt is located at the top for receiving and returning oversized materials separated by the screening machine, and simultaneously covers the main conveyor belt as a dustproof mechanism; Side eaves boards are arranged on the main conveyor belt and the auxiliary conveyor belt, and main push plates and auxiliary push plates are arranged on the side eaves boards in a spaced manner respectively; The auxiliary push plate is a hollow structure, and guide grooves are arranged on the two sides of the auxiliary push plate, and a retractable closing plate is installed in the guide grooves through a support, and a pop-up piece is connected to the bottom of the support; A magnetic base is arranged at the bottom of the auxiliary conveyor belt, and when the auxiliary push plate rotates to the position of abutting against the main push plate, the magnetic base triggers the closing plate to pop up and be sealedly connected to the two sides of the main push plate; An auxiliary cleaning assembly driven by the main conveyor belt itself is arranged at the top of the main conveyor belt, and the auxiliary cleaning assembly comprises a rotating brush and a lifting type knocking mechanism driven by a transmission mechanism, and when the auxiliary push plate rotates to the position of the lifting type knocking mechanism, the closing plate is retracted by the lifting type knocking mechanism; The closing plate is slidably connected to the positioning seat of the outer wall of the side eaves board through the limiting pieces at the two ends of the support, and a spring pin with a magnetic piece is arranged on the positioning seat, and a corresponding insertion hole is arranged on the limiting piece; The magnetic base can generate a magnetic attraction force on the magnetic piece to make the spring pin be pulled out of the insertion hole; The auxiliary cleaning assembly comprises an extension plate fixed to the top of the main conveyor belt, a driven pulley is installed on the extension plate through a rotating shaft, an extension shaft on the transmission shaft of the main conveyor belt is connected with a driving pulley, and the two are connected through a belt to drive the rotating shaft to rotate; A rotating wheel is installed on the extension shaft, and a top ball and a push rod higher than the position of the top ball are arranged in a ring shape on the surface of the rotating wheel; A lifting frame is installed on the main conveyor belt through a spring guide rod, and the bottom plate at the bottom of the lifting frame cooperates with the top ball and the push rod on the rotating wheel to realize intermittent lifting movement; A top plate is vertically installed on the lifting frame, a knocking piece is arranged in the middle of the top plate, and the knocking piece strikes the side eaves board to generate vibration when the lifting frame moves; A locking rod is installed on the top plate, and when the push rod lifts the lifting frame, the locking rod synchronously pushes the limiting piece to reset to make the closing plate retract; 2. The raw material conveying assembly for alumina production according to claim 1, characterized in that: The distance between the main push plates is matched with the rotating period of the rotating wheel to ensure that the displacement of one main push plate corresponds to one rotation of the rotating wheel.

3. The raw material conveying assembly for alumina production according to claim 1, characterized in that: The main push plate and the auxiliary push plate are arranged in a one-to-one correspondence, and can abut against each other to form a dynamic continuous sealing surface when the conveyor belt operates.

4. The raw material conveying assembly for alumina production according to claim 1, characterized in that: A brush extending into the screening machine is arranged in a ring shape on the rotating shaft to clean the residual materials on the surface of the main conveyor belt.

5. The raw material conveying assembly for alumina production according to claim 1, characterized in that: A through groove covered by the auxiliary push plate is arranged at the connection between the auxiliary push plate and the side eaves board, and the support passes out of the through groove to prevent dust leakage. The closing plate can completely cover the guide groove in the popped-up state and the retracted state to prevent dust from entering the cavity of the auxiliary push plate.

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