A furnace cover assembly and track spreader

Abstract

The present application relates to sintering furnace feeding technology field, disclose a kind of furnace cover assembly and track distribution car, including shell, the bottom surface of shell is fixed with sintering furnace mouth;The top surface of shell is equipped with the material port corresponding with sintering furnace mouth;The side surface of shell is equipped with through slot, so that material port is split into two parts;Slidingly connected in the through slot has upper pressing plate, lower pressing plate, upper pressing plate and lower pressing plate are arranged in superposition staggered, and the overlapping area of upper pressing plate and lower pressing plate is used to close the material port above and below the through slot;The bottom surface of upper pressing plate is equipped with recess, recess is equipped with upper wedge plate, and the lower horizontal section of upper wedge plate projects in upper pressing plate outside;The bottom surface of lower pressing plate is equipped with recess, recess is equipped with lower wedge plate, and the upper horizontal section of lower wedge plate projects in lower pressing plate outside;The present application is opened by sliding upper pressing plate and lower pressing plate apart, simple operation, good safety, by sliding upper pressing plate and lower pressing plate towards each other, so that material port is closed, and is compressed reliably, and good sealing performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sintering furnace feeding, in particular to a furnace cover assembly and a track feeding vehicle. BACKGROUND

[0002] The preparation method of the rare earth polishing powder comprises the following steps: preparing fluorocarbon rare earth acid of rare earth elements lanthanum, cerium, samarium and yttrium, and the adding amount of fluorine is 5-10% of REO; and the fluorocarbon rare earth acid is calcined and particle size is classified to obtain the rare earth polishing powder.

[0003] The existing roasting is carried out in a sintering furnace, and the feeding mode of the sintering furnace is to carry out feeding operation by manual cooperation with mechanical equipment. When feeding, the operator first hoists the raw material stored in a ton bag to the sintering furnace platform by a crown block, then opens the sintering furnace cover, and then uses the crown block and a conical hopper to add the raw material in the ton bag into the sintering furnace ton by ton. For example, there are 6 sintering furnaces in the workshop, and the feeding interval of each sintering furnace is about 10 hours. When feeding, the temperature of the furnace body and the furnace is high, and the operator needs to complete the operations of opening the cover, hoisting, feeding, observation and closing the cover in the high-temperature environment. The opening and closing of the furnace cover during the sintering furnace feeding operation is complicated, and there is a safety hazard of scalding the operator during the operation. SUMMARY

[0004] The present application aims to provide a furnace cover assembly and a track feeding vehicle, and solve the problems of complicated opening and closing of the furnace cover and easy scalding in the background art.

[0005] The technical scheme adopted by the present application is as follows: a furnace cover assembly comprises a shell, the shell is in the shape of a rectangular plate, the bottom surface of the shell is fixed to the furnace mouth of a sintering furnace through bolts; the top surface of the shell is provided with a material port corresponding to the furnace mouth of the sintering furnace, the material port penetrates the shell; the side surface of the shell is provided with a through groove, the through groove is in the shape of a rectangle, the through groove penetrates the shell, so that the material port is divided into two parts, and the length and width of the through groove are greater than the length and width of the material port; the through groove is slidably connected with an upper pressing plate and a lower pressing plate, the upper pressing plate and the lower pressing plate are both in the shape of a rectangle, the length direction edges of the upper pressing plate and the lower pressing plate slide in the through groove, the upper pressing plate and the lower pressing plate are arranged in a stacked and staggered manner, and the overlapping area of the upper pressing plate and the lower pressing plate is used for closing the material port above and below the through groove; the left side edge of the upper pressing plate is flush with the left side edge of the shell, the right side edge of the upper pressing plate is welded with symmetrically arranged upper jacks, the free ends of the upper jacks are located in the through groove, and the upper jacks are used for eliminating structural interference; the right side edge of the lower pressing plate is flush with the right side edge of the shell, the left side edge of the lower pressing plate is welded with symmetrically arranged lower jacks, the free ends of the lower jacks are located in the through groove, and the lower jacks are used for eliminating structural interference; the bottom surface of the upper pressing plate is provided with a recess, an upper wedge plate is fixed in the recess through a countersunk bolt, the upper wedge plate is in the shape of an inverted right-angle trapezoid, the lower horizontal section of the upper wedge plate protrudes outside the upper pressing plate, and the inclined surface of the upper wedge plate is located in the overlapping area; the bottom surface of the lower pressing plate is provided with a recess, a lower wedge plate is fixed in the recess through a countersunk bolt, the lower wedge plate is in the shape of a right-angle trapezoid, the upper horizontal section of the lower wedge plate protrudes outside the lower pressing plate, and the inclined surface of the lower wedge plate is located in the overlapping area; the upper wedge plate and the lower wedge plate form a squeezing force from the middle to the upper and lower directions, and the squeezing force gradually increases with the overlapping area of the upper pressing plate and the lower pressing plate, so that the upper pressing plate and the lower pressing plate tightly press the material port of the shell.

[0006] Further, an applicable track distributor for the furnace cover assembly is provided, comprising a box body and a guide plate, the box body is rectangular tubular, a top cover is fixed on the top surface of the box body by bolts, and the top cover is used for closing the upper opening of the box body; a hopper pipe is welded on the inner wall of the box body, and the hopper pipe is used for discharging rare earth ore powder; a quantitative discharge valve is fixed on the lower end of the hopper pipe by bolts, and the model of the quantitative discharge valve is yjd-06; a discharge pipe is fixed on the lower end of the quantitative discharge valve by bolts, and the discharge pipe is used for feeding the sintering furnace; a walking mechanism is welded on the side wall of the box body; a support beam is fixed on the bottom edge of the box body, the number of the support beam is two, the support beam is symmetrically arranged, a second compression spring is installed on the bottom surface of the support beam, the second compression spring is symmetrically arranged on both sides of the discharge pipe, a wheel seat is installed on the free end of the second compression spring, and a roller is rotatably connected to the wheel seat; the number of the guide plate is two, the guide plate is symmetrically arranged on the top surface of the high platform, the shape of the guide plate is wavy, the number of the wave trough is the same as the number of the sintering furnace port, the wave trough point is on both sides of the discharge pipe, the complete position of the guide plate is a round corner structure, a switch for controlling the start and stop of the hydraulic cylinder is installed at the wave trough point, and the roller moves along the guide plate.

[0007] The beneficial effects of the present application are:

[0008] The present application can open the material port by sliding the upper and lower pressing plates away from each other, which is simple to operate and safe, and can close the material port by sliding the upper and lower pressing plates towards each other, which is reliable and has good sealing performance.

[0009] The present application can discharge a certain amount of rare earth ore powder at a fixed point, cooperate with the opening and closing of the furnace cover assembly, and discharge the rare earth ore powder into the sintering furnace for roasting, which eliminates the safety hazards of production personnel, reduces the use of production personnel, and improves the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a schematic diagram of the three-dimensional structure of the existing sintering furnace.

[0011] Figure 2 It is a schematic diagram of the side view cross-sectional structure of the furnace port and the shell.

[0012] Figure 3 It is a schematic diagram of the side view cross-sectional structure of the shell.

[0013] Figure 4 It is a schematic diagram of the main view cross-sectional structure of the upper and lower pressing plates after overlapping.

[0014] Figure 5 It is an explosion structure schematic diagram of the upper and lower pressing plates Figure 1 .

[0015] Figure 6Fig. 1 is a schematic diagram of the upper and lower pressing plates in an exploded configuration. Figure 2 .

[0016] Figure 7 Fig. 2 is a schematic diagram of the upper wedge plate in a front view configuration.

[0017] Figure 8 Fig. 3 is a schematic diagram of the lower wedge plate in a front view configuration.

[0018] Figure 9 Fig. 4 is a schematic diagram of the upper and lower pressing plates in a front view configuration with the housing removed.

[0019] Figure 10 Fig. 5 is a schematic diagram of the drive member in a front view configuration.

[0020] Figure 11 Fig. 6 is a schematic diagram of the drive member in a top view configuration.

[0021] Figure 12 Fig. 7 is a schematic diagram of the upper and lower pressing plates in a front view configuration with the housing installed.

[0022] Figure 13 Fig. 8 is a schematic diagram of the upper and lower pressing plates in a top view configuration with the housing installed.

[0023] Figure 14 Fig. 9 is a schematic diagram of the upper and lower pressing plates in a front view configuration with the housing installed and the material opening opened.

[0024] Figure 15 Fig. 10 is a schematic diagram of the upper and lower pressing plates in a top view configuration with the housing installed and the material opening opened.

[0025] Figure 16 Fig. 11 is a schematic diagram of the protrusion in a front view cross-sectional configuration.

[0026] Figure 17 Fig. 12 is a schematic diagram of the box and guide plate in a front view configuration.

[0027] Figure 18 Fig. 13 is a schematic diagram of the guide plate in a side view configuration.

[0028] Figure 19 Fig. 14 is a schematic diagram of the roller moving to the trough point in a side view configuration.

[0029] Figure 20 Fig. 15 is a schematic diagram of the walking mechanism in a perspective view configuration.

[0030] Figure 21 Fig. 16 is a schematic diagram of the walking mechanism with the winch drive in a side view configuration.

[0031] Figure 22 Fig. 17 is a schematic diagram of the feed tube and suction tube in a side view cross-sectional configuration.

[0032] Figure 23 Fig. 18 is a schematic diagram of the keel in a side view cross-sectional configuration.

[0033] Figure 24 Fig. 4 is a schematic view of the three-dimensional structure of the air injection pipe and the air bag.

[0034] Figure 25 Fig. 5 is a schematic view of the main section structure of the central rod.

[0035] Figure 26 Fig. 6 is a schematic view of the main structure of the air feeding pipe.

[0036] Figure 27 Fig. 7 is a schematic view of the main structure of the discharge pipe and the connecting rod.

[0037] Figure 28 Fig. 8 is a schematic view of the main structure of the discharge pipe after being retracted.

[0038] In the figure: 1, sintering furnace; 2, stand; 3, high platform; 4, rectangular groove; 5, furnace mouth; 6, shell; 7, material port; 8, through groove; 9, upper pressing plate; 10, lower pressing plate; 11, upper ejector rod; 12, lower ejector rod; 13, recess; 14, upper wedge plate; 15, lower wedge plate; 16, driving member; 17, guide rail; 18, push plate; 19, hydraulic cylinder; 20, first push rod; 21, second push rod; 22, first compression spring; 23, spring seat; 24, protrusion; 25, box body; 26, guide plate; 27, top cover; 28, funnel pipe; 29, quantitative discharge valve; 30, discharge pipe; 31, traveling mechanism; 32, support beam; 33, second compression spring; 34, wheel seat; 35, roller; 36, trough point; 37, switch; 38, support; 39, reinforcing rib; 40, wheel; 41, tooth groove; 42, track; 43, tooth surface; 44, feeding pipe; 45, bellows; 46, material suction head; 47, ton bag; 48, air suction pipe; 49, hose; 50, vacuum air pump; 51, layer plate; 52, through hole; 53, cloth bag; 54, keel; 55, positioning seat; 56, straight rod; 57, circular ring; 58, stop valve; 59, air injection pipe; 60, electromagnetic valve; 61, air bag; 62, air compression pump; 63, central rod; 64, positioning nut; 65, silicone rubber pad; 66, air passage; 67, air hole; 68, air feeding pipe; 69, primary pipe; 70, secondary pipe; 71, tertiary pipe; 72, first blocking ring; 73, first sliding ring; 74, second blocking ring; 75, second sliding ring; 76, rubber pipe; 77, connecting rod. DETAILED DESCRIPTION

[0039] Embodiments of the present application are described in detail below with reference to the attached drawings, wherein like or similar elements are denoted by the same or similar reference characters throughout the drawings. The embodiments described below are exemplary only, and are not to be construed as limiting the present application.

[0040] In the description of the present application, it is to be understood by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated.

[0042] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; It can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] As shown in Figure 1 The existing factory area is arranged in a line with six sintering furnaces 1, steel structure columns 2 are installed on the ground of the factory area, high platforms 3 are installed on the columns 2, rectangular grooves 4 corresponding to the furnace openings 5 of the sintering furnaces 1 are opened on the top surface of the high platforms 3, the projection area of the rectangular grooves 4 is greater than the projection area of the furnace openings 5, and the rare earth ore powder is poured into the furnace openings 5 of the sintering furnaces 1 from the rectangular grooves 4.

[0044] As shown in Figure 2 A furnace cover assembly includes a shell 6, the shell 6 is in the shape of a rectangular plate, and the bottom surface of the shell 6 is fixed to the furnace opening 5 of the sintering furnace 1 by bolts; as shown in Figure 3 The top surface of the shell 6 is provided with a material port 7 corresponding to the furnace opening 5 of the sintering furnace 1, and the material port 7 penetrates the shell 6; the side surface of the shell 6 is provided with a through groove 8, the through groove 8 is in the shape of a rectangle, and the through groove 8 penetrates the shell 6, so that the material port 7 is divided into upper and lower two parts, and the length and width of the through groove 8 are greater than the length and width of the material port 7, so that the upper pressing plate 9 and the lower pressing plate 10 can completely close the material port 7; as shown in Figure 4As shown, the upper pressing plate 9 and the lower pressing plate 10 are slidably connected in the through groove 8, the upper pressing plate 9 and the lower pressing plate 10 are both rectangular in shape, the length direction edges of the upper pressing plate 9 and the lower pressing plate 10 slide in the through groove 8, the upper pressing plate 9 and the lower pressing plate 10 are arranged in a staggered manner, and the overlapping area of the upper pressing plate 9 and the lower pressing plate 10 is used to close the material opening 7 above and below the through groove 8; the left side edge of the upper pressing plate 9 is flush with the left side edge of the shell 6, symmetrically arranged upper top rods 11 are welded to the right side edge of the upper pressing plate 9, the free ends of the upper top rods 11 are located in the through groove 8, and the upper top rods 11 are used to eliminate structural interference; the right side edge of the lower pressing plate 10 is flush with the right side edge of the shell 6, symmetrically arranged lower top rods 12 are welded to the left side edge of the lower pressing plate 10, the free ends of the lower top rods 12 are located in the through groove 8, and the lower top rods 12 are used to eliminate structural interference; as shown in Figure 6 As shown, the bottom surface of the upper pressing plate 9 is provided with a groove 13, and an upper wedge plate 14 is fixed in the groove 13 by means of a countersunk bolt, as shown in Figure 7 As shown, the upper wedge plate 14 is inverted right-angled trapezoidal in shape, the lower horizontal section of the upper wedge plate 14 protrudes out of the upper pressing plate 9, and the inclined surface of the upper wedge plate 14 is located in the overlapping area; as shown in Figure 5 As shown, the bottom surface of the lower pressing plate 10 is provided with a groove 13, and a lower wedge plate 15 is fixed in the groove 13 by means of a countersunk bolt, as shown in Figure 8 As shown, the lower wedge plate 15 is right-angled trapezoidal in shape, the upper horizontal section of the lower wedge plate 15 protrudes out of the lower pressing plate 10, and the inclined surface of the lower wedge plate 15 is located in the overlapping area, as shown in Figure 9 As shown, the upper wedge plate 14 and the lower wedge plate 15 form a squeezing force from the middle to the bottom up, and the squeezing force gradually increases with the increase of the overlapping area of the upper pressing plate 9 and the lower pressing plate 10, so that the upper pressing plate 9 and the lower pressing plate 10 are more tightly pressed against the material opening 7 of the shell 6; the present application opens the material opening 7 by sliding the upper pressing plate 9 and the lower pressing plate 10 away from each other, which is simple to operate and safe, and closes the material opening 7 by sliding the upper pressing plate 9 and the lower pressing plate 10 towards each other, which is reliable in pressing and good in sealing.

[0045] As shown in Figure 10-11As shown, the optimization as an embodiment further comprises a driving member 16, the driving member 16 comprises guide rails 17, the number of guide rails 17 is 2, and the guide rails 17 are symmetrically arranged on both sides of the rectangular groove 4 of the platform 3; a push plate 18 is slidably connected on the guide rail 17, and the push plate 18 is used for pushing back the upper pressing plate 9 and the lower pressing plate 10 to further seal the charging port 7; a hydraulic cylinder 19 is fixedly connected to the back of the push plate 18, and the piston rod of the hydraulic cylinder 19 is located at the center line position of the push plate 18; the hydraulic cylinder 19 is horizontally arranged, and the tail of the hydraulic cylinder 19 is fixedly connected with the platform 3; a first push rod 20 is slidably connected to the end face of the left push plate 18, the first push rod 20 is symmetrically arranged, and the head end of the first push rod 20 is used for pushing the lower top rod 12 to further make the lower pressing plate 10 move rightwards, and the charging port 7 is opened; a second push rod 21 is slidably connected to the end face of the right push plate 18, the second push rod 21 is symmetrically arranged, and the head end of the second push rod 21 is used for pushing the upper top rod 11 to further make the upper pressing plate 9 move leftwards, and the charging port 7 is opened; a first compression spring 22 is installed at the tail end of the first push rod 20 and the second push rod 21, the first compression spring 22 is fixed on a spring seat 23, the spring seat 23 is in the shape of U, the spring seat 23 is fixed with the push plate 18, and a hole through which the hydraulic cylinder 19 passes is formed in the horizontal section of the spring seat 23, and the first compression spring 22 can ensure that the push plate 18 pushes back the upper pressing plate 9 and the lower pressing plate 10; the opening and closing process of the charging port 7: when the furnace port 5 of the sintering furnace 1 is rotated to the upper quadrant point, it is stopped, and the hydraulic cylinder 19 is started, the piston rod of the hydraulic cylinder 19 moves synchronously and oppositely, the first compression spring 22 is in an expanded state, when the first push rod 20 abuts against the lower top rod 12, the second push rod 21 abuts against the upper top rod 11, with the displacement of the piston rod, the lower pressing plate 10 moves rightwards and the upper pressing plate 9 moves leftwards, and the charging port 7 is opened, at this time, the sintering furnace 1 can be charged, when the charging is completed, the piston rod continues to move oppositely, the right push plate 18 pushes the upper pressing plate 9 into the through groove 8, at this time, the upper pressing plate 9 is flush with the left side edge of the shell 6, the left push plate 18 pushes the lower pressing plate 10 into the through groove 8, at this time, the lower pressing plate 10 is flush with the right side edge of the shell 6, under the action of the upper wedge plate 14 and the lower wedge plate 15, the charging port 7 is sealed, and the first compression spring 22 is in a contracted state; by arranging the driving member 16, the mechanical opening and closing of the upper pressing plate 9 and the lower pressing plate 10 can be realized, the labor intensity of the operator is reduced, the safety hidden danger of the production personnel is eliminated, and the production efficiency is improved; and after the piston rod is completely retracted, the first push rod 20 and the second push rod 21 do not affect the rotation of the sintering furnace 1. Figure 12-13 Figure 14-15 Figure 10-11

[0046] Figure 16 ​​​​As shown, as an embodiment of the optimization, the inner end face of the push plate 18 is welded with a protrusion 24, the protrusion 24 on the left side corresponds to the side edge of the upper pressing plate 9, and the protrusion 24 is used for over-travel extrusion of the upper pressing plate 9 to improve the pressing force of the upper pressing plate 9; the protrusion 24 on the right side corresponds to the side edge of the lower pressing plate 10, and the protrusion 24 is used for over-travel extrusion of the lower pressing plate 10 to improve the pressing force of the lower pressing plate 10.

[0047] As shown, Figure 17 Further, as shown, a track 42 distributing vehicle suitable for the above furnace cover assembly is provided, which comprises a box body 25 and a guide plate 26. The box body 25 is in the shape of a rectangular tube, and a top cover 27 is fixed on the top surface of the box body 25 by bolts, which is used to close the upper opening of the box body 25. A hopper pipe 28 is welded on the inner wall of the box body 25, which is used to discharge rare earth ore powder. A quantitative discharge valve 29 is fixed on the lower end of the hopper pipe 28 by bolts, and the model of the quantitative discharge valve 29 is yjd-06. A discharge pipe 30 is fixed on the lower end of the quantitative discharge valve 29 by bolts, which is used to feed the sintering furnace 1. A walking mechanism 31 is welded on the side wall of the box body 25. A support beam 32 is fixed on the bottom edge of the box body 25, and the number of the support beam 32 is two. The support beam 32 is symmetrically arranged, and a second compression spring 33 is installed on the bottom surface of the support beam 32. The second compression spring 33 is symmetrically arranged on both sides of the discharge pipe 30, and a wheel seat 34 is installed on the free end of the second compression spring 33. A roller 35 is rotatably connected to the wheel seat 34. By limiting the position of the roller 35, the position of the discharge pipe 30 can be indicated to ensure that the discharge pipe 30 can be aligned with the material port 7. Figure 18 As shown, the number of the guide plate 26 is two, which is symmetrically arranged on the top surface of the high platform 3, and the shape is wavy. The number of wave troughs is the same as the number of the furnace openings 5 of the sintering furnace 1. The wave trough points 36 are on both sides of the discharge pipe 30. The complete position of the guide plate 26 is a round corner structure, and a switch 37 for controlling the start and stop of the hydraulic cylinder 19 is installed at the wave trough point 36. Figure 19 As shown, the roller 35 moves along the guide plate 26. When the roller 35 moves to the wave trough point 36, the switch 37 is triggered, and the hydraulic cylinder 19 is actuated, so that the furnace cover assembly is mechanically opened and closed. At this time, the discharge pipe 30 is opposite to the furnace opening 5 of the sintering furnace 1. The application can discharge a certain amount of rare earth ore powder at a fixed point, cooperate with the opening and closing of the furnace cover assembly, and the discharged rare earth ore powder enters the sintering furnace 1 for roasting, which eliminates the safety hazards of production personnel, reduces the use of production unit personnel, and improves the production efficiency.

[0048] As shown, Figure 20As shown, as an embodiment of optimization, the walking mechanism 31 comprises a support 38, the number of which is 2, symmetrically arranged on the side wall of the box 25, and a reinforcing rib 39 is welded at the angle between the top surface of the support 38 and the box 25; the bottom surface of the support 38 is provided with a wheel 40, and the wheel surface of one side of the wheel 40 is provided with a tooth groove 41; it also comprises a track 42, the number of which is 2, symmetrically arranged on the top surface of the platform 3, and the surface of one side of the track 42 is provided with a tooth surface 43 which is engaged with the tooth groove 41; as shown Figure 21 As shown, the walking mechanism 31 can be driven by a winch or a reduction motor installed on one of the wheels 40 with a tooth groove 41, and the toothed wheel 40 and the toothed guide plate 26 are arranged to provide sufficient friction force for the movement of the box 25 and make the movement more stable, so as to stop the box 25 when it reaches the trough point 36.

[0049] As shown Figure 22 As shown, as an embodiment of optimization, the side wall of the box 25 is welded with a feeding pipe 44, the feeding pipe 44 is connected with a suction head 46 through a corrugated pipe 45, the suction head 46 is in the shape of a barrel, and the suction head 46 can be inserted into a ton bag 47 to suck the rare earth ore powder; the side wall of the box 25 is welded with a suction pipe 48, the suction pipe 48 is connected with a vacuum air pump 50 through a hose 49; a layer plate 51 is installed on the waist of the box 25, the layer plate 51 divides the inner cavity of the box 25 into an upper cavity and a lower cavity, the feeding pipe 44 is located below the layer plate 51, the suction pipe 48 is located above the layer plate 51, the end surface of the layer plate 51 is provided with a matrix arranged through hole 52, the through hole 52 is in the shape of a circle, a cloth bag 53 is installed on the through hole 52, the cloth bag 53 is in the shape of a barrel, and the cloth bag 53 is supported and fixed through a keel 54; the upper cavity of the box 25 forms a negative pressure through the vacuum air pump 50, and the quantitative discharge valve 29 is closed at the same time, so that the rare earth ore powder in the ton bag 47 can be sucked into the box 25, a small amount of dust is blocked by the cloth bag 53 and adheres to the outer wall of the cloth bag 53, air enters the upper cavity of the box 25 and is then discharged from the vacuum air pump 50, realizing the upward lifting of the rare earth ore powder.

[0050] As shown Figure 23 As shown, as an embodiment of optimization, the keel 54 comprises a positioning seat 55, the positioning seat 55 is in the shape of a circular ring 57, the positioning seat 55 is bolted with the layer plate 51, and a straight rod 56 is equally angle-welded on the inner side wall of the positioning seat 55, the number of the straight rod 56 is 8, and a circular ring 57 is welded on the side wall of the straight rod 56 from top to bottom, so that the cloth bag 53 can be expanded by limiting the structure of the keel 54, and the dust filtering and ventilation process of the cloth bag 53 is ensured.

[0051] As shown Figure 24As shown, as an embodiment of the optimization, the suction pipe 48 is provided with a stop valve 58; the top surface of the box 25 is welded with air injection pipes 59 arranged at equal intervals; the side wall of the air injection pipe 59 located outside the box 25 is provided with a solenoid valve 60; the outer end of the air injection pipe 59 is welded with an air bag 61, the air inlet of the air bag 61 is connected with an air compressor 62, the air bag 61 is injected with compressed air through the air compressor 62, the stop valve 58 is closed, and the pulse opening and closing solenoid valve 60 can realize the back blowing of the cloth bag 53, so that the dust adhered to the outer wall of the cloth bag 53 is blown off, the ventilation of the cloth bag 53 is ensured, and the dust filtering operation is continued.

[0052] As shown, Figure 25 As shown, as an embodiment of the optimization, the outer end surface of the funnel pipe 28 of the box 25 is provided with a center rod 63, the center rod 63 is fixed through a positioning nut 64, the shape of the center rod 63 is a T-shaped cylinder, the side wall of the center rod 63 is slidably connected with a silica rubber pad 65, the shape of the silica rubber pad 65 is an arc-shaped rotary piece, the concave surface of the silica rubber pad 65 is attached to the inner wall of the box 25 to form a closed air cavity; the thin side wall end of the center rod 63 is provided with an air channel 66, the air channel 66 is coaxial with the center rod 63, the thin side wall of the center rod 63 is provided with an air hole 67 communicating with the air channel 66, the position of the air hole 67 is in the air cavity surrounded by the silica rubber pad 65; the air channel 66 of the center rod 63 is connected with the air bag 61 through a gas supply pipe 68, the side wall of the gas supply pipe 68 is provided with a solenoid valve 60, and the solenoid valve 60 is started. Figure 26 As shown,

[0053] As shown, Figure 27 As shown, as an embodiment of the optimization, the discharge pipe 30 includes a primary pipe 69, a secondary pipe 70 and a tertiary pipe 71, the upper pipe opening of the primary pipe 69 is connected with the quantitative discharge valve 29 through a flange, the lower pipe opening of the primary pipe 69 is welded with a first stop ring 72, the inner wall of the primary pipe 69 is slidably connected with the secondary pipe 70, the upper pipe opening of the secondary pipe 70 is welded with a first sliding ring 73, the first sliding ring 73 is limited by the first stop ring 72, the lower pipe opening of the secondary pipe 70 is welded with a second stop ring 74, the inner wall of the secondary pipe 70 is slidably connected with the tertiary pipe 71, the upper pipe opening of the tertiary pipe 71 is welded with a second sliding ring 75, the second sliding ring 75 is limited by the second stop ring 74, and the primary pipe 69, the secondary pipe 70 and the tertiary pipe 71 are set to make the discharge pipe 30 telescopic, the lower pipe opening of the tertiary pipe 71 is located above the furnace opening 5 of the sintering furnace 1 after being extended, and the lower pipe opening of the tertiary pipe 71 is located above the high platform 3 after being retracted. Figure 28 As shown,

[0054] like Figure 27 As shown, as an optimization of the embodiment, a rubber tube 76 is installed at the lower end of the tertiary tube 71. The lower end of the rubber tube 76 is constricted. After the tertiary tube 71 is retracted, the lower end of the rubber tube 76 is located above the platform 3. By setting the rubber tube 76, the discharge pipe 30 is made closer to the furnace opening 5 of the sintering furnace 1, which prevents rare earth ore powder from falling outside the furnace opening 5 and reduces the waste of rare earth ore powder.

[0055] like Figure 27 As shown, as an optimization of the embodiment, the inner side of the wheel seat 34 is hinged with a connecting rod 77, which rotates vertically. The free end of the connecting rod 77 is hinged to the lower pipe opening of the three-stage pipe 71, which also rotates vertically. When the roller 35 moves to the trough point 36, the connecting rod 77 pushes the discharge pipe 30 to extend segment by segment above the furnace opening 5 of the sintering furnace 1, which facilitates the discharge of rare earth mineral powder. When the roller 35 moves to the crest point, the connecting rod 77 drives the discharge pipe 30 to retract segment by segment above the platform 3, which facilitates the movement of the box 25.

[0056] Although the present invention has been described in detail with reference to the foregoing examples, those skilled in the art can still make and modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A track spreader comprising a box (25), a guide plate (26), characterized in that The top surface of the box (25) is provided with a top cover (27); the inner wall of the box (25) is provided with a funnel pipe (28); the lower end of the funnel pipe (28) is provided with a quantitative discharge valve (29); the lower end of the quantitative discharge valve (29) is provided with a discharge pipe (30) for feeding the sintering furnace (1); the side wall of the box (25) is provided with a walking mechanism (31); the bottom edge of the box (25) is provided with a support beam (32), the bottom surface of the support beam (32) is provided with a second compression spring (33), the second compression spring (33) is symmetrically arranged on both sides of the discharge pipe (30), the free end of the second compression spring (33) is provided with a wheel seat (34), and the wheel seat (34) is rotatably connected with a roller (35); the shape of the guide plate (26) is wave-shaped, the number of wave troughs is the same as the number of furnace openings (5) of the sintering furnace (1), the wave trough points (36) are on both sides of the discharge pipe (30), and switches (37) for starting and stopping the control hydraulic cylinders (19) are arranged at the wave trough points (36), and the roller (35) moves along the guide plate (26); further comprising a furnace cover assembly, the furnace cover assembly comprises a shell (6), the bottom surface of the shell (6) is fixed with the furnace opening (5) of the sintering furnace (1); the top surface of the shell (6) is provided with a material port (7) corresponding to the furnace opening (5) of the sintering furnace (1), and the material port (7) penetrates through the shell (6); the side surface of the shell (6) is provided with a through groove (8) penetrating through the shell (6), so that the material port (7) is divided into two parts; the through groove (8) is slidably connected with an upper pressing plate (9) and a lower pressing plate (10), the upper pressing plate (9) and the lower pressing plate (10) are arranged in a superimposed and staggered manner, and the overlapping area of the upper pressing plate (9) and the lower pressing plate (10) is used for closing the material port (7) above and below the through groove (8); the bottom surface of the upper pressing plate (9) is provided with a groove (13), and the groove (13) is provided with an upper wedge plate (14), the shape of the upper wedge plate (14) is an inverted right-angle trapezoid, the lower horizontal section of the upper wedge plate (14) protrudes outward of the upper pressing plate (9), and the inclined surface of the upper wedge plate (14) is located in the overlapping area; the bottom surface of the lower pressing plate (10) is provided with a groove (13), and the groove (13) is provided with a lower wedge plate (15), the shape of the lower wedge plate (15) is a right-angle trapezoid, the upper horizontal section of the lower wedge plate (15) protrudes outward of the lower pressing plate (10), and the inclined surface of the lower wedge plate (15) is located in the overlapping area; when the upper pressing plate (9) closes the shell (6), the left side of the upper pressing plate (9) is flush with the left side of the shell (6), the right side of the upper pressing plate (9) is provided with symmetrically arranged upper jacks (11), and the free ends of the upper jacks (11) are located in the through groove (8); when the lower pressing plate (10) closes the shell (6), the right side of the lower pressing plate (10) is flush with the right side of the shell (6), the left side of the lower pressing plate (10) is provided with symmetrically arranged lower jacks (12), and the free ends of the lower jacks (12) are located in the through groove (8).Also include driving piece (16), the driving piece (16) includes guide rail (17), guide rail (17) is slidably connected with push plate (18), push plate (18) is used to push back upper pressing plate (9) and lower pressing plate (10) in turn close material mouth (7);The back of push plate (18) is equipped with hydraulic cylinder (19);The end face of push plate (18) on the left side is slidably connected with first push rod (20), first push rod (20) is symmetrically arranged, and the head end of first push rod (20) is used to push lower jack (12);The end face of push plate (18) on the right side is slidably connected with second push rod (21), and second push rod (21) is symmetrically arranged, and the head end of second push rod (21) is used to push upper jack (11);The tail end of first push rod (20) and second push rod (21) is equipped with first compression spring (22), and first compression spring (22) is equipped on spring seat (23).

2. A rail car according to claim 1, wherein The inner end face of the push plate (18) is provided with protrusions (24), the protrusions (24) on the left side correspond to the side edge of the upper pressing plate (9); the protrusions (24) on the right side correspond to the side edge of the lower pressing plate (10).

3. A rail car according to claim 1, wherein The walking mechanism (31) comprises a support (38), the bottom surface of the support (38) is provided with wheels (40), the wheel surface of one side of the wheels (40) is provided with a tooth groove (41); the walking mechanism (31) further comprises a track (42), the surface of one side of the track (42) is provided with a tooth surface (43), the tooth surface (43) is engaged with the tooth groove (41).

4. A rail car of claim 1, wherein The side wall of the box (25) is provided with a feeding pipe (44), the feeding pipe (44) is connected with a suction head (46) through a corrugated pipe (45); the side wall of the box (25) is provided with a suction pipe (48), the suction pipe (48) is connected with a vacuum air pump (50) through a hose (49); the waist part in the box (25) is provided with a layer plate (51), the layer plate (51) divides the inner cavity of the box (25) into an upper cavity and a lower cavity, the feeding pipe (44) is located below the layer plate (51), the suction pipe (48) is located above the layer plate (51), the end surface of the layer plate (51) is provided with a plurality of through holes (52) arranged in a matrix, a cloth bag (53) is arranged on the through holes (52), and the cloth bag (53) is supported and fixed through a keel (54).

5. A rail car of claim 1, wherein The discharge pipe (30) comprises a first-stage pipe (69), a second-stage pipe (70) and a third-stage pipe (71), the upper pipe opening of the first-stage pipe (69) is connected with the quantitative discharge valve (29) through a flange, the lower pipe opening of the first-stage pipe (69) is provided with a first blocking ring (72), the inner wall of the first-stage pipe (69) is slidably connected with the second-stage pipe (70), the upper pipe opening of the second-stage pipe (70) is provided with a first sliding ring (73), the first sliding ring (73) is limited by the first blocking ring (72), the lower pipe opening of the second-stage pipe (70) is provided with a second blocking ring (74), the inner wall of the second-stage pipe (70) is slidably connected with the third-stage pipe (71), the upper pipe opening of the third-stage pipe (71) is provided with a second sliding ring (75), and the second sliding ring (75) is limited by the second blocking ring (74).

6. A rail car according to claim 5, wherein The inner side surface of the wheel seat (34) is hingedly connected with a connecting rod (77), the free end of the connecting rod (77) is hingedly connected with the lower pipe opening of the third-stage pipe (71), and the rotating direction of the connecting rod (77) is vertical.

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