CN113895996A

CN113895996A - Sealed discharge apparatus with telescopic discharge opening

Info

Publication number: CN113895996A
Application number: CN202111355600.6A
Authority: CN
Inventors: 戴宏彬; 戴汝山
Original assignee: Shanghai Deesa Electromechanical Co ltd
Current assignee: Shanghai Deesa Electromechanical Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-01-07
Anticipated expiration: 2041-11-16
Also published as: CN113895996B

Abstract

The invention discloses a sealed discharging device with a telescopic discharging opening, which relates to the technical field of discharging devices and comprises a feeding hopper, an adjustable sealing box, a telescopic discharging mechanism and a dust hood, wherein the feeding hopper, the adjustable sealing box, the telescopic discharging mechanism and the dust hood are arranged from top to bottom; in the process that the hydraulic cylinder drives the straight rack to horizontally move in the adjustable sealing mechanism, the straight rack drives the gear meshed with the straight rack to rotate, the gear drives the sealing plate to rotate around the fixed shaft, the sealing plate is stably opened and closed under the support of the fixed shaft and the auxiliary shaft, the size of the opening and the sealing of the adjustable sealing box are adjusted, the adjustment is more accurate due to the matching mode of the cylinder and the gear rack, and the discharging control is more convenient.

Description

Sealed discharge apparatus with telescopic discharge opening

Technical Field

The invention relates to the technical field of discharging devices, in particular to a sealed discharging device with a telescopic discharging opening.

Background

The existing bulk material sealed unloading device with a telescopic unloading opening and a dust removal hose is suitable for bulk material unloading places in the industries of metallurgy, mine and the like, can effectively suck away dust and harmful gas generated in the unloading process, achieves the purposes of dust collection and purification after treatment, reduces the loss of air suction volume of a dust remover, and provides a set of preferable scheme for environmental protection, energy conservation and emission reduction of enterprises at present;

the Chinese patent of publication No. CN108946206A discloses a discharging device used under a bulk material bin, which comprises a sealing gate connected on a discharge port of a hopper, wherein the discharge port of the sealing gate is connected with a telescopic material guiding and dust removing mechanism, the sealing gate comprises a tubular shell, a pair of main gear and auxiliary gear which are meshed with each other are arranged in the tubular shell, jaw plates are connected on the main gear and the auxiliary gear, the jaw plates on the main gear and the jaw plates on the auxiliary gear are meshed with the main gear and the auxiliary gear to be spliced into a V-shaped sealing plate which divides the tubular shell into two sections, and the two jaw plates are driven to be opened or closed to control discharging;

however, the following technical problems still exist: the unloading adjustment and the telescopic pipe height adjustment cannot be realized more accurately, and the raised dust generated in the unloading process is not adsorbed and filtered in advance so as to reduce the treatment capacity and power consumption of the dust remover;

therefore, a sealed discharging device with a telescopic discharging opening is designed.

Disclosure of Invention

The invention aims to provide a sealed discharging device with a telescopic discharging opening, which is used for solving the technical problems that discharging adjustment and telescopic pipe height adjustment cannot be realized more accurately in the prior art, and raised dust generated in the discharging process is not adsorbed and filtered in advance so as to reduce the treatment capacity and power consumption of a dust remover.

The purpose of the invention can be realized by the following technical scheme:

a sealed unloading device with a telescopic unloading port comprises a feeding hopper, an adjustable sealing box, a telescopic unloading mechanism and a dust hood which are arranged from top to bottom, wherein the adjustable sealing box is internally provided with the adjustable sealing mechanism; the adjustable sealing mechanism comprises two hydraulic cylinders, a straight rack, a gear and a sealing plate, the hydraulic cylinders are arranged outside the adjustable sealing box, piston rods of the hydraulic cylinders horizontally extend towards the inside of the adjustable sealing box, the end parts of the piston rods are fixedly provided with the straight racks, the gear is meshed with an inner cavity of the adjustable sealing box below the straight racks, the gear is positioned on the outer side of the sealing plate, a fixed shaft penetrating through the sealing plate and the wall part of the adjustable sealing box is fixed on the axis of the gear, auxiliary shafts parallel to the fixed shaft penetrate through two sides of the sealing plate, and the outer wall of the gear is connected with a fixed ring sleeved outside the auxiliary shafts through connecting rods; in the process that the hydraulic cylinder drives the straight rack to move horizontally, the straight rack drives the gear meshed with the straight rack and the fixed shaft to rotate, and the sealing plate rotates integrally around the fixed shaft.

Furthermore, the sealing and discharging of the cavity of the adjustable sealing box are realized in the process that the sealing plate rotates around the fixed shaft, and the outer wall of the adjustable sealing box fixes the hydraulic cylinder through an L-shaped fixed rod; the inner cavity of the adjustable sealing box is provided with an arc limiting cavity below the gear, and the arc limiting cavity is used for limiting the rotating path of the sealing plate.

Furthermore, the telescopic unloading mechanism comprises a telescopic inner pipe, an electro-hydraulic push rod and an external telescopic mechanism, the telescopic inner pipe is arranged at the bottom of the adjustable sealing box, the external telescopic mechanism is arranged outside the telescopic inner pipe, mounting plates extend outwards from two sides of the bottom of the adjustable sealing box, and one end of the electro-hydraulic push rod is fixed on one of the mounting plates; the external telescopic mechanism comprises a balancing weight, a steel wire rope and telescopic frames, the two telescopic frames are fixed on two sides of the telescopic inner pipe, the balancing weight is arranged on one side of the electro-hydraulic push rod, an extension block is arranged on the balancing weight, and the extension block is fixedly connected with a lifting lug at the bottom of the electro-hydraulic push rod.

Furthermore, a first movable pulley block, a second movable pulley block and a third movable pulley block are arranged outside the telescopic inner pipe at the bottom of the adjustable seal box, the upper surface of the balancing weight passes through the first movable pulley block and the second movable pulley block through a steel wire rope and then is connected with one telescopic frame, and the upper surface of the balancing weight passes through the first movable pulley block, the second movable pulley block and the third movable pulley block through another steel wire rope and then is connected with the other telescopic frame.

Furthermore, the first movable pulley block and the second movable pulley block are identical in structure and respectively comprise a U-shaped fixing frame, a rotating shaft and movable pulleys, the two movable pulleys are symmetrically arranged inside the U-shaped fixing frame, the two movable pulleys are respectively used for the two steel wire ropes to pass through, and the rotating shaft penetrates through the two ends of the U-shaped fixing frame and the axle centers of the two movable pulleys.

Furthermore, the expansion bracket comprises a plurality of first telescopic rods and a plurality of second telescopic rods which are sequentially connected end to end, the end to end positions of the first telescopic rods and the second telescopic rods are rotatably connected through the passing buckles, the steel wire rope sequentially penetrates through each passing buckle from top to bottom, and the passing buckles close to the side of the telescopic inner pipe are fixedly connected with the telescopic inner pipe through the connecting buckles.

Further, go into to be equipped with dust removal case in advance between hopper and the adjustable seal box, the dust removal buffer gear in advance is equipped with in the dust removal case in advance, and the buffer gear that removes dust in advance includes first pivot, second pivot and cushion cylinder, and the inner wall department of dust removal case in advance is located to first pivot, and the below of first pivot is located in the second pivot, rotates between first pivot and the second pivot to be connected with the buffer beam, and the buffer beam is held to incline to set up by first pivot to second pivot.

Furthermore, the buffer cylinder is arranged on the inner wall of the pre-dedusting box, and a piston rod of the buffer cylinder horizontally extends to be connected with the end part of the second rotating shaft; the inside negative-pressure air fan that is equipped with in the region that buffer bar and buffer cylinder enclose to close, the outer wall of dust removal case in advance is equipped with the dust removal pipe in advance with negative-pressure air fan intercommunication.

The invention has the following beneficial effects:

1. according to the sealed discharging device with the telescopic discharging opening, the adjustable sealing mechanism is arranged in the adjustable sealing box, in the process that a hydraulic cylinder in the adjustable sealing mechanism drives a straight rack to horizontally move, the straight rack drives a gear meshed with the straight rack to rotate, the gear drives a sealing plate to rotate around a fixed shaft, meanwhile, a connecting rod drives an auxiliary shaft to rotate through a fixing ring, so that the sealing plate is stably opened and closed under the support of the fixed shaft and the auxiliary shaft, the sealing and opening size adjustment of the adjustable sealing box are realized, the adjustment is more accurate due to the matching mode of the cylinder and the gear rack, the discharging control is more convenient, and the sealed discharging device is suitable for bulk material discharging places in industries such as metallurgy and mine;

2. in the telescopic unloading mechanism, the balancing weight stretches the two telescopic frames, the telescopic inner tubes are driven to stretch in the stretching process of the telescopic frames, the electro-hydraulic push rod is connected with the balancing weight through the extension block, the balancing weight is pushed to ascend and descend in the stretching process of the electro-hydraulic push rod, and the unloading height of the telescopic inner tubes is accurately adjusted;

3. due to the arrangement of the pre-dedusting buffer mechanism in the pre-dedusting box, when the sealing plate is opened, a large amount of materials are introduced from the feeding hopper instantly, a large amount of raised dust is generated, part of the materials can impact the buffer rod, the buffer rod can rotate around the first rotating shaft and the second rotating shaft, and the buffer cylinder plays a role in buffering and supporting the buffer rod; after the negative pressure fan is started, a part of raised dust can be discharged into the dust remover through the pre-dust removal pipe under the action of negative pressure; the arrangement of the pre-dust removal box reduces the impact of materials on the sealing plate, and simultaneously absorbs and removes a part of raised dust, thereby reducing the dust handling capacity of the dust removal cover;

4. in the dust hood, materials enter a transport carriage through a feeding hopper, a pre-dust removal box, an adjustable seal box, a telescopic inner pipe and a dust removal housing, a large amount of generated raised dust is filtered by a quartz sand filter layer, a glass fiber filter layer and an active carbon filter layer under the negative pressure action of a dust remover air pipe, a large amount of dust particles and nonferrous metal impurities are removed, and the purified raised dust is adsorbed and removed by the dust remover air pipe; after the raised dust is filtered in three steps to improve the purity, the raised dust is adsorbed by an air pipe of the dust remover, the treatment capacity and the dust removal power consumption of the dust remover are reduced, and the dust removal cover can absorb dust and harmful gas generated in the unloading process and achieve the purposes of dust absorption and purification after treatment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of a sealed discharge apparatus with retractable discharge openings in an embodiment of the invention;

FIG. 2 is a partial cross-sectional view of a sealed discharge apparatus with retractable discharge openings in an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of the invention at A in FIG. 2;

FIG. 4 is a schematic view showing an assembled structure of a gear, a sealing plate, a fixing shaft, an auxiliary shaft and a connecting rod in an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a telescopic unloading mechanism in the embodiment of the invention;

FIG. 6 is an enlarged view of a portion of the invention at B in FIG. 5;

FIG. 7 is a front view of a first movable pulley block and a second movable pulley block in an embodiment of the present invention;

fig. 8 is a schematic structural view of a dust excluding hood according to an embodiment of the present invention.

In the figure: 10. feeding into a hopper; 20. an adjustable seal box; 30. a telescopic unloading mechanism; 31. an inner telescopic pipe; 32. an electro-hydraulic push rod; 33. mounting a plate; 34. lifting lugs; 35. a first movable pulley block; 36. a second movable pulley block; 37. a third movable pulley block; 40. a dust hood; 41. a dust removal housing; 42. a quartz sand filter layer; 43. a glass fiber filter layer; 44. an activated carbon filter layer; 45. a corrugated dust removal pipe; 50. an adjustable sealing mechanism; 51. a hydraulic cylinder; 52. a straight rack; 53. a gear; 54. a sealing plate; 55. a piston rod; 56. a fixed shaft; 57. an auxiliary shaft; 58. a connecting rod; 59. a fixing ring; 60. an L-shaped fixing rod; 61. an arc-shaped limiting cavity; 70. a pre-dedusting box; 71. a pre-dedusting buffer mechanism; 72. a first rotating shaft; 73. a second rotating shaft; 74. a buffer cylinder; 75. a buffer rod; 76. a negative pressure fan; 77. a pre-dust removal pipe; 80. an external telescoping mechanism; 81. a balancing weight; 82. a wire rope; 83. a telescopic frame; 84. an extension block; 351. a U-shaped fixing frame; 352. a rotating shaft; 353. a movable pulley; 831. a first telescopic rod; 832. a second telescopic rod; 833. passing through the buckle; 834. a connecting buckle.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1-4, the present embodiment provides a sealed discharging device with a retractable discharging opening, which includes a feeding hopper 10, an adjustable sealing box 20, a retractable discharging mechanism 30 and a dust hood 40, which are arranged from top to bottom, wherein the feeding hopper 10 is used for being abutted to a discharging opening of a storage bin, and an adjustable sealing mechanism 50 is arranged in the adjustable sealing box 20. Specifically, the number of the adjustable sealing mechanisms 50 is two, the two adjustable sealing mechanisms 50 are symmetrically arranged on the adjustable sealing box 20, each adjustable sealing mechanism 50 comprises a hydraulic cylinder 51, a straight rack 52, a gear 53 and a sealing plate 54, each hydraulic cylinder 51 is arranged outside the adjustable sealing box 20, a piston rod 55 of each hydraulic cylinder extends horizontally towards the inside of the adjustable sealing box 20, the end of each piston rod 55 is fixed with the straight rack 52, the lower part of each straight rack 52 is meshed with the gear 53 in the inner cavity of the adjustable sealing box 20, the gear 53 is arranged on the outer side of the sealing plate 54, a fixed shaft 56 penetrating through the sealing plate 54 and the wall part of the adjustable sealing box 20 is fixed on the axis of the gear 53, auxiliary shafts 57 parallel to the fixed shaft 56 penetrate through two sides of the sealing plate 54, and the outer walls of the gears 53 are connected with fixing rings 59 which are sleeved on the outsides of the auxiliary shafts 57 through connecting rods 58. In the process that the hydraulic cylinder 51 drives the straight rack 52 to move horizontally, the straight rack 52 drives the gear 53 meshed with the straight rack 52 and the fixed shaft 56 to rotate, and the sealing plate 54 rotates around the fixed shaft 56 integrally.

The sealed discharge apparatus with the telescopic discharge opening of the embodiment is characterized in that an adjustable sealing mechanism 50 is arranged in an adjustable sealing box 20, in the adjustable sealing mechanism 50, a hydraulic cylinder 51 drives a straight rack 52 to horizontally move, the straight rack 52 drives a gear 53 meshed with the straight rack 52 to rotate, the gear 53 drives a sealing plate 54 to rotate around a fixed shaft 56, meanwhile, a connecting rod 58 drives an auxiliary shaft 57 to rotate through a fixing ring 59, the sealing plate 54 is stably opened and closed under the support of the fixed shaft 56 and the auxiliary shaft 57, the size of the opening and the sealing of the adjustable sealing box 20 are adjusted, the adjustment is more accurate due to the matching mode of the cylinder and the gear rack, the discharge control is more convenient, and the sealed discharge apparatus is suitable for bulk material discharge places in industries such as metallurgy and mines.

The sealing plate 54 realizes the sealing and discharging of the cavity of the adjustable sealing box 20 in the process of rotating around the fixed shaft 56, and the outer wall of the adjustable sealing box 20 fixes the hydraulic cylinder 51 through the L-shaped fixed rod 60. The inner cavity of the adjustable seal box 20 is located below the gear 53, and an arc-shaped limiting cavity 61 is formed in the lower portion of the inner cavity, and the arc-shaped limiting cavity 61 is used for limiting the rotating path of the seal plate 54. The arc-shaped limiting cavity 61 is used for limiting the position of the sealing plate 54 in the rotating process, so that the position of the sealing plate 54 is prevented from deviating, and the sealing plate 54 can be conveniently accommodated after being completely opened.

As shown in fig. 1-2 and 5-6, the telescopic unloading mechanism 30 includes a telescopic inner tube 31, an electro-hydraulic push rod 32 and an external telescopic mechanism 80, the telescopic inner tube 31 is disposed at the bottom of the adjustable seal box 20, the external telescopic mechanism 80 is disposed outside the telescopic inner tube 31, mounting plates 33 extend outwards from two sides of the bottom of the adjustable seal box 20, and one end of the electro-hydraulic push rod 32 is fixed on one of the mounting plates 33. The external telescopic mechanism 80 comprises a balancing weight 81, a steel wire rope 82 and telescopic frames 83, the two telescopic frames 83 are fixed on two sides of the telescopic inner pipe 31, the balancing weight 81 is arranged on one side of the electro-hydraulic push rod 32, an extension block 84 is arranged on the balancing weight 81, and the extension block 84 is fixedly connected with the lifting lug 34 at the bottom of the electro-hydraulic push rod 32.

In flexible shedding mechanism 30, balancing weight 81 stretches two expansion brackets 83, and the telescopic in-process of expansion bracket 83 drives flexible inner tube 31 and stretches out and draws back, and electric liquid push rod 32 is connected with balancing weight 81 through extending piece 84, and the flexible in-process of electric liquid push rod 32 promotes balancing weight 81 and rises and descend, the accurate height of unloading of adjusting flexible inner tube 31.

The bottom of the adjustable seal box 20 is provided with a first movable pulley block 35, a second movable pulley block 36 and a third movable pulley block 37 outside the telescopic inner pipe 31, the upper surface of the counterweight 81 is connected with one telescopic frame 83 after passing through the first movable pulley block 35 and the second movable pulley block 36 by a steel wire rope 82, and the upper surface of the counterweight 81 is connected with the other telescopic frame 83 after passing through the first movable pulley block 35, the second movable pulley block 36 and the third movable pulley block 37 by another steel wire rope 82. The counterweight block 81 is in linkage fit with the two steel wire ropes 82 through the first movable pulley block 35, the second movable pulley block 36 and the third movable pulley block 37, in the process that the electro-hydraulic push rod 32 pushes the counterweight block 81 to descend, the counterweight block 81 pulls the steel wire ropes 82 to move downwards, and the telescopic frame 83 pulls the telescopic inner pipe 31 to contract upwards; in the process that the electro-hydraulic push rod 32 contracts to enable the balancing weight 81 to rise, the balancing weight 81 enables the steel wire rope 82 to move upwards, and the telescopic frame 83 releases tension to enable the telescopic inner pipe 31 to extend downwards. The two steel wire ropes 82 realize synchronous regulation and control of the two telescopic frames 83 and the telescopic inner pipe 31 through a plurality of pulley blocks.

The first movable pulley block 35 and the second movable pulley block 36 have the same structure, and as shown in fig. 7, each of the first movable pulley block 35 and the second movable pulley block 36 includes a U-shaped fixing frame 351, a rotation shaft 352 and movable pulleys 353, the two movable pulleys 353 are symmetrically disposed inside the U-shaped fixing frame 351, the two movable pulleys 353 are respectively used for the two steel wire ropes 82 to pass through, and the rotation shaft 352 penetrates through two ends of the U-shaped fixing frame 351 and the axes of the two movable pulleys 353.

The telescopic frame 83 comprises a plurality of first telescopic rods 831 and second telescopic rods 832 which are sequentially connected end to end, the end-to-end positions of the first telescopic rods 831 and the second telescopic rods 832 are rotatably connected through the passing buckles 833, the steel wire rope 82 sequentially passes through each passing buckle 833 from top to bottom, and the passing buckles 833 close to the telescopic inner tube 31 side are fixedly connected with the telescopic inner tube 31 through the connecting buckles 834. A plurality of first telescopic link 831 and second telescopic link 832 are connected through passing knot 833 rotation for first telescopic link 831 and second telescopic link 832 can rotate relatively, and wire rope 82 passes every passing knot 833 from last to bottom in proper order, and tightening and release between first telescopic link 831 and the second telescopic link 832 are realized to the taut and release of wire rope 82, and passing knot 833 further drives the shrink and the extension of flexible inner tube 31 through connector link 834. The telescopic adjustment of the telescopic inner pipe 31 is more uniform and stable due to the arrangement of the telescopic frame 83.

Example 2

As shown in fig. 1-3, the sealed discharging device with a retractable discharging opening in this embodiment is different from embodiment 1 in that a pre-dust-removing box 70 is disposed between an input hopper 10 and an adjustable sealing box 20, a pre-dust-removing buffer mechanism 71 is disposed in the pre-dust-removing box 70, the pre-dust-removing buffer mechanism 71 includes a first rotating shaft 72, a second rotating shaft 73 and a buffer cylinder 74, the first rotating shaft 72 is disposed at an inner wall of the pre-dust-removing box 70, the second rotating shaft 73 is disposed below the first rotating shaft 72, a buffer rod 75 is rotatably connected between the first rotating shaft 72 and the second rotating shaft 73, the buffer rod 75 is disposed from an end of the first rotating shaft 72 to an end of the second rotating shaft 73 in an inclined inward manner, and the buffer cylinder 74 is disposed at an inner wall of the pre-dust-removing box 70 and a piston rod thereof extends horizontally to be connected to an end of the second rotating shaft 73. A negative pressure fan 76 is arranged in the region enclosed by the buffer rod 75 and the buffer cylinder 74, and a pre-dust removal pipe 77 communicated with the negative pressure fan 76 is arranged on the outer wall of the pre-dust removal box 70.

Due to the arrangement of the pre-dedusting buffer mechanism 71 in the pre-dedusting box 70, when the sealing plate 54 is opened, a large amount of materials are introduced from the feeding hopper 10 instantly, a large amount of dust can be generated, part of the materials can collide with the buffer rod 75, the buffer rod 75 can rotate around the first rotating shaft 72 and the second rotating shaft 73, and the buffer cylinder 74 plays a role in buffering and supporting the buffer rod 75. After the negative pressure fan 76 is turned on, a part of the dust can be discharged into the dust remover through the pre-dust removing pipe 77 under the negative pressure. The pre-dust removal box 70 reduces the impact of the materials on the sealing plate 54, and simultaneously absorbs and removes a part of the raised dust, thereby reducing the dust handling capacity of the dust hood 40.

As shown in fig. 1-2 and 8, the dust removing cover 40 includes a dust removing cover 41, the dust removing cover 41 is fittingly installed with the telescopic inner tube 31, a quartz sand filter layer 42, a glass fiber filter layer 43 and an activated carbon filter layer 44 are sequentially arranged on two sides of the dust removing cover 41 from inside to outside, a corrugated dust removing tube 45 extending upward is connected to the top of the activated carbon filter layer 44, and the top end of the corrugated dust removing tube 45 is fixed by a mounting plate 33.

When the telescopic inner pipe 31 is close to a transportation carriage, unloading is started, the top end of the corrugated dust removal pipe 45 is butted with an air pipe of a dust remover, materials enter the transportation carriage through the feeding hopper 10, the pre-dust removal box 70, the adjustable seal box 20, the telescopic inner pipe 31 and the dust removal housing 41, a large amount of generated raised dust is filtered by the quartz sand filter layer 42, the glass fiber filter layer 43 and the active carbon filter layer 44 under the negative pressure action of the air pipe of the dust remover, a large amount of dust particles and nonferrous metal impurities are removed, and the purified raised dust is adsorbed and removed by the air pipe of the dust remover. The dust excluding hood 40 is structurally arranged, so that raised dust is adsorbed by a dust remover air pipe after being filtered in three steps to improve the purity, the treatment capacity and the dust removal power consumption of the dust remover are reduced, dust and harmful gas generated in the discharging process can be absorbed by the dust excluding hood, and the purpose of dust absorption and purification is achieved after treatment.

Example 3

As shown in fig. 1 to 8, the present embodiment provides an operating principle of a sealed discharging device with a retractable discharging opening, which is as follows:

pre-dedusting buffering: after the material is fed from the feeding hopper 10, a large amount of dust can be generated, part of the material impacts the buffer rod 75, the buffer rod 75 can rotate around the first rotating shaft 72 and the second rotating shaft 73, and the buffer cylinder 74 carries out buffer support on the buffer rod 75; after the negative pressure fan 76 is turned on, a part of the dust can be discharged into the dust remover through the pre-dust removing pipe 77 under the negative pressure.

And (3) unloading and adjusting: in the process that the hydraulic cylinder 51 drives the straight rack 52 to move horizontally, the straight rack 52 drives the gear 53 meshed with the straight rack 52 to rotate, the gear 53 drives the sealing plate 54 to rotate around the fixed shaft 56, and meanwhile, the connecting rod 58 drives the auxiliary shaft 57 to rotate through the fixing ring 59, so that the sealing plate 54 is stably opened and closed under the support of the fixed shaft 56 and the auxiliary shaft 57, and the sealing and opening size adjustment of the adjustable sealing box 20 are realized.

Expansion adjustment: in the process that the electro-hydraulic push rod 32 pushes the balancing weight 81 to descend, the balancing weight 81 pulls the steel wire rope 82 to move downwards, and the telescopic frame 83 pulls the telescopic inner pipe 31 to contract upwards; in the process that the electro-hydraulic push rod 32 contracts to enable the balancing weight 81 to rise, the balancing weight 81 enables the steel wire rope 82 to move upwards, and the telescopic frame 83 releases tension to enable the telescopic inner pipe 31 to extend downwards.

Dust removal: when the telescopic inner pipe 31 is close to a transportation carriage, unloading is started, the top end of the corrugated dust removal pipe 45 is butted with an air pipe of a dust remover, materials enter the transportation carriage through the feeding hopper 10, the pre-dust removal box 70, the adjustable seal box 20, the telescopic inner pipe 31 and the dust removal housing 41, a large amount of generated raised dust is filtered by the quartz sand filter layer 42, the glass fiber filter layer 43 and the active carbon filter layer 44 under the negative pressure action of the air pipe of the dust remover, a large amount of dust particles and nonferrous metal impurities are removed, and the purified raised dust is adsorbed and removed by the air pipe of the dust remover.

The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sealed discharging device with a telescopic discharging opening comprises a feeding hopper (10), an adjustable sealing box (20), a telescopic discharging mechanism (30) and a dust hood (40) which are arranged from top to bottom, and is characterized in that the adjustable sealing box (20) is internally provided with an adjustable sealing mechanism (50); the number of the adjustable sealing mechanisms (50) is two and the adjustable sealing mechanisms are symmetrically arranged on the adjustable sealing box (20), the adjustable sealing mechanism (50) comprises a hydraulic cylinder (51), a straight rack (52), a gear (53) and a sealing plate (54), the hydraulic cylinder (51) is arranged outside the adjustable sealing box (20), a piston rod (55) of the hydraulic cylinder horizontally extends towards the interior of the adjustable sealing box (20), the end part of the piston rod (55) is fixed with the straight rack (52), the lower part of the straight rack (52) is positioned in the inner cavity of the adjustable sealing box (20) and is meshed with the gear (53), the gear (53) is positioned on the outer side of the sealing plate (54), a fixing shaft (56) penetrating through the sealing plate (54) and the wall part of the adjustable sealing box (20) is fixed on the axis of the gear (53), auxiliary shafts (57) parallel to the fixing shaft (56) penetrate through the two sides of the sealing plate (54), and the outer wall of the gear (53) is connected with a fixing ring (59) sleeved outside the auxiliary shafts (57) through connecting rods (58); in the process that the hydraulic cylinder (51) drives the straight rack (52) to move horizontally, the straight rack (52) drives the gear (53) meshed with the straight rack and the fixed shaft (56) to rotate, and the sealing plate (54) rotates around the fixed shaft (56) integrally.

2. The sealed discharging device with the telescopic discharging port as claimed in claim 1, wherein the sealing plate (54) realizes the sealing and discharging of the cavity of the adjustable sealing box (20) during the rotation around the fixed shaft (56), and the outer wall of the adjustable sealing box (20) fixes the hydraulic cylinder (51) through an L-shaped fixed rod (60); the inner cavity of the adjustable sealing box (20) is located below the gear (53), and an arc limiting cavity (61) is arranged below the gear (53), and the arc limiting cavity (61) is used for limiting the rotating path of the sealing plate (54).

3. The sealed discharge device with the telescopic discharge opening as claimed in claim 1, wherein the telescopic discharge mechanism (30) comprises a telescopic inner pipe (31), an electro-hydraulic push rod (32) and an external telescopic mechanism (80), the telescopic inner pipe (31) is arranged at the bottom of the adjustable sealing box (20), the external telescopic mechanism (80) is arranged outside the telescopic inner pipe (31), mounting plates (33) extend outwards from two sides of the bottom of the adjustable sealing box (20), and one end of the electro-hydraulic push rod (32) is fixed on one of the mounting plates (33); outside telescopic machanism (80) include balancing weight (81), wire rope (82), expansion bracket (83), and two expansion brackets (83) are fixed in the both sides of flexible inner tube (31), and one side of electric liquid push rod (32) is located balancing weight (81), are equipped with on balancing weight (81) and extend piece (84), extend piece (84) and lug (34) fixed connection bottom electric liquid push rod (32).

4. The sealed discharging device with the telescopic discharging opening as claimed in claim 3, wherein a first movable pulley block (35), a second movable pulley block (36) and a third movable pulley block (37) are arranged at the bottom of the adjustable sealed box (20) and outside the telescopic inner pipe (31), the upper surface of the counterweight block (81) is connected with one telescopic frame (83) after passing through the first movable pulley block (35) and the second movable pulley block (36) through one steel wire rope (82), and the upper surface of the counterweight block (81) is connected with the other telescopic frame (83) after passing through the first movable pulley block (35), the second movable pulley block (36) and the third movable pulley block (37) through the other steel wire rope (82).

5. The sealed discharging device with the telescopic discharging opening as claimed in claim 4, wherein the first movable pulley block (35) and the second movable pulley block (36) are identical in structure and each comprise a U-shaped fixed frame (351), a rotating shaft (352) and a movable pulley (353), the two movable pulleys (353) are symmetrically arranged inside the U-shaped fixed frame (351), the two movable pulleys (353) are respectively used for the two steel wire ropes (82) to pass through, and the rotating shaft (352) penetrates through two ends of the U-shaped fixed frame (351) and the axle centers of the two movable pulleys (353).

6. The sealed discharging device with the telescopic discharging opening as claimed in claim 4, wherein the telescopic frame (83) comprises a plurality of first telescopic rods (831) and second telescopic rods (832) which are sequentially connected end to end, the end-to-end positions of the first telescopic rods (831) and the second telescopic rods (832) are rotatably connected through the passing buckles (833), the steel wire rope (82) sequentially passes through each passing buckle (833) from top to bottom, and the passing buckles (833) close to the telescopic inner tube (31) are fixedly connected with the telescopic inner tube (31) through the connecting buckles (834).

7. The sealed discharging device with the telescopic discharging opening as claimed in claim 1, wherein a pre-dedusting box (70) is arranged between the feeding hopper (10) and the adjustable sealing box (20), a pre-dedusting buffer mechanism (71) is arranged in the pre-dedusting box (70), the pre-dedusting buffer mechanism (71) comprises a first rotating shaft (72), a second rotating shaft (73) and a buffer cylinder (74), the first rotating shaft (72) is arranged at the inner wall of the pre-dedusting box (70), the second rotating shaft (73) is arranged below the first rotating shaft (72), a buffer rod (75) is rotatably connected between the first rotating shaft (72) and the second rotating shaft (73), and the buffer rod (75) is obliquely and inwardly arranged from the end of the first rotating shaft (72) to the end of the second rotating shaft (73).

8. The sealed discharge device with the telescopic discharge opening as claimed in claim 7, wherein the buffer cylinder (74) is arranged on the inner wall of the pre-dedusting box (70) and the piston rod of the buffer cylinder horizontally extends to be connected with the end part of the second rotating shaft (73); a negative pressure fan (76) is arranged in an area formed by enclosing the buffer rod (75) and the buffer cylinder (74), and a pre-dedusting pipe (77) communicated with the negative pressure fan (76) is arranged on the outer wall of the pre-dedusting box (70).