Tail comprehensive performance device of bucket elevator

Abstract

The present application relates to the technical field of bucket elevator, specifically to a comprehensive performance device for the tail of a bucket elevator, comprising a tail box, a hoisting and leveling assembly, two explosion-proof door assemblies, a negative pressure dust suction pipeline, and a material inlet, wherein the hoisting and leveling assembly is arranged on the top of the tail box, the explosion-proof door assemblies are installed on the front and back of the tail box, the negative pressure dust suction pipeline and the material inlet are arranged on the top of the front of the tail box, and the device further comprises a sliding dust blocking assembly arranged at both ends of a rotating shaft in the tail box, an electrostatic gathering assembly installed on the rotating shaft, and an electrostatic discharge terminal column arranged on the bottom of one side of the tail box. The present application improves the types of transported materials, improves the bearing structure, improves the dust blocking effect, reduces the noise through negative pressure dust suction, improves the service life of the bearing, and reduces the probability of combustion and explosion through electrostatic discharge.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bucket elevator, in particular to a bucket elevator tail comprehensive performance device. BACKGROUND

[0002] In recent years, the mechanical market demand is booming, among which the lifting machine mechanical industry grows the fastest. The bucket elevator is the most common vertical conveying equipment, and is the most effective lifting way for granular materials and powders. During the operation of the bucket elevator tail transmission device, a large amount of dust and material debris is easily retained in the air, which is mixed in the transmission shaft, so that the service life of the transmission shaft is reduced. Referring to the patent CN207242692U bucket elevator tail sealing device automatic adjusting device, which is a filtering device, has a barrier between the bearing and the transported material, filters the powders coming from the material cabin, and is good for use in the non-metal powder industry such as cement, but the current application in the metallurgical industry has the problems of serious wear of the sliding bearing and noise produced by the bearing; when the bucket elevator transports flammable and explosive materials such as sulfur, coal powder, rosin, calcium carbide and red phosphorus, the dust retained in the air can cause static electricity to accumulate in the hopper, steel wire belt and roller, and is easy to cause combustion and explosion. SUMMARY

[0003] Therefore, the present application aims to provide a bucket elevator tail comprehensive performance device which can prevent noise, static electricity and combustion and explosion.

[0004] In order to achieve the above purpose, the present application provides a bucket elevator tail comprehensive performance device, which comprises a machine tail box body, a material feeding port, a lifting and leveling assembly arranged at the top of the machine tail box body, an explosion-proof door assembly installed on the front and back of the machine tail box body, a negative pressure dust adsorption pipeline and the material feeding port arranged at the top of the front of the machine tail box body, a sliding dust blocking assembly arranged at both ends of a rotating shaft in the machine tail box body, an electrostatic accumulation assembly installed outside the rotating shaft, and an electrostatic lead-out terminal column arranged at the bottom of one side of the machine tail box body.

[0005] The sliding dust blocking assembly comprises a transmission shaft, a first nut, a photoelectric sensor support, a second nut, a photoelectric sensor, a third nut, a bolt, a bearing seat, a first screw, a second screw, a blocking ring, a third screw, a bearing inner ring, a bearing cover, a bearing outer ring, a fourth screw and a material blocking and light shielding plate.

[0006] The transmission shaft is a two-step symmetrical shaft arranged in the machine tail box body, which is composed of a middle section installation shaft and left and right bearing installation shafts. The middle section installation shaft is provided with a roller in the middle through a locking mechanism, and the material blocking and light shielding plate is installed on the left middle section of the roller.

[0007] The bearing inner ring is installed on the left bearing mounting shaft of the transmission shaft by transition fit, the bearing outer ring is a cylindrical body with two stepped holes, the cross section of which is two horizontal structures, the first stepped hole in the bearing outer ring has a diameter larger than the inner diameter of the bearing inner ring, the difference is 2t, the value of t is between 0.5mm and 1.5mm, the second stepped hole in the bearing outer ring has a diameter larger than the diameter of the first stepped hole, the diameter of the second stepped hole in the bearing outer ring is equal to the outer diameter of the bearing inner ring, the length of the second stepped hole in the bearing outer ring is larger than the length of the bearing inner ring, the difference is h, the value of h is between 0.5mm and 1.5mm, the length of the bearing outer ring is smaller than the length of the left bearing mounting shaft of the transmission shaft, the difference is s, the value of s is between 0.5mm and 1.5mm, the bearing seat is a hoisting type horizontal base with bearing mounting holes, two sides are provided with through screw holes, the vertical plate surface of the photoelectric sensor support has a first mounting hole, the first mounting hole is aligned with the screw hole on one side of the bearing seat, the photoelectric sensor support and the bearing seat are connected by the bolts passing through the screw holes and the first mounting hole from left to right, and the photoelectric sensor is fixed on the photoelectric sensor support.

[0008] The bearing cover is a circular cup structure with two mounting ear hole, the cup opening end surface of the bearing cover is in contact with the left end plane of the bearing outer ring, the upper ear hole of the bearing cover is connected and fixed with the upper threaded hole of the bearing seat by the first screw, and the lower ear hole of the bearing cover is connected and fixed with the lower threaded hole of the bearing seat by the fourth screw.

[0009] The retainer is a circular plate, the circular plate has two mounting holes at the middle position, the diameter of the circular plate is smaller than the outer diameter of the bearing inner ring, and the diameter of the circular plate is larger than the inner diameter of the bearing inner ring, the second screw is connected and fixed with the upper threaded hole on the left end surface of the transmission shaft through the upper mounting hole of the retainer, the third screw is connected and fixed with the lower threaded hole on the left end surface of the transmission shaft through the lower mounting hole of the retainer, the right surface of the retainer is in contact with the left end surface of the transmission shaft, and the right surface of the retainer is in contact with the left end surface of the bearing inner ring;

[0010] The static electricity gathering assembly comprises a roller on the middle section mounting shaft, a steel wire rubber belt and a hopper, the roller is a component welded from metal material, the steel wire rubber belt is an annular flat belt with internal woven steel wire and external vulcanized rubber, each row on the annular flat belt has two mounting holes at certain intervals, two bolts pass through the two mounting holes of the steel wire rubber belt and the two mounting holes in the tail box body to fix the tail box body and the steel wire rubber belt, the steel wire in the steel wire rubber belt, the bolt, the tail box body and the roller form an electric conductor, and the tail box body is a container made of metal material;

[0011] The static electricity gathering assembly forms a static electricity release channel through the transmission shaft, the bearing inner ring, the bearing outer ring, the bearing seat, the hoisting rod, the hoisting fixing frame and the tail box body, and the static electricity is led out through the wire.

[0012] As a preferred technical scheme of the present application, the middle section mounting shaft and the left and right bearing mounting shafts are all cylindrical shafts, wherein the diameter of the middle section mounting shaft is the largest, and the diameters of the left and right bearing mounting shafts are equal.

[0013] As a preferred technical scheme of the present application, the material blocking and shading plate is a word-shaped plate structure rotated by 90 degrees clockwise, and has a circular hole in the middle, the middle section mounting shaft is fixed by interference fit through the circular hole of the material blocking and shading plate, and the bearing inner ring is cylindrical, and the inner diameter of the bearing inner ring is equal to the diameter of the left bearing mounting shaft of the transmission shaft.

[0014] As a preferred technical scheme of the present application, the photoelectric sensor support is a right-angle-shaped plate structure, the first mounting hole of the photoelectric sensor support passes through the right end of the bolt and is fixed by thread connection with the bolt through the third nut, the other horizontal plate surface of the photoelectric sensor support has a second mounting hole, the photoelectric sensor passes through the second mounting hole and is fixed by thread connection with the stud on the photoelectric sensor through the first nut, the second nut and the second mounting hole.

[0015] As a preferred technical scheme of the present application, the hoisting and leveling assembly comprises a hoisting rod, a hoisting fixing frame, an adjusting nut, a locking nut, a hoisting limiting frame, a limiting frame nut, a sliding block locking nut, a vertical sliding block and a sliding block limiting nut.

[0016] The hoisting fixing frame is mounted on the tail box of the elevator, the hoisting rod passes through the horizontal through hole of the hoisting fixing frame in the vertical direction, the outer cylindrical surface of the hoisting rod has external threads, the adjusting nut is connected with the hoisting rod by thread connection, the lower surface of the adjusting nut is in contact with the upper surface of the hoisting fixing frame, the locking nut is connected with the hoisting rod by thread connection, the upper surface of the locking nut is in contact with the lower surface of the hoisting fixing frame, the hoisting limiting frame is horizontally placed and mounted on the tail box of the elevator, the hoisting limiting frame is located directly below the hoisting fixing frame, the limiting frame nut is connected with the hoisting rod by thread connection, the lower surface of the limiting frame nut is in contact with the upper surface of the hoisting limiting frame, the vertical sliding block is connected with the hoisting rod by thread connection through the middle threaded hole, the upper surface of the vertical sliding block is in contact with the lower surface of the sliding block locking nut, the sliding block locking nut is connected with the hoisting rod by thread connection, and the sliding block limiting nut is connected with the hoisting rod by thread connection, and the upper surface of the sliding block limiting nut is in contact with the lower surface of the vertical sliding block.

[0017] As a preferred technical scheme of the present application, the upper end surface of the lifting platform of the bearing seat has a downward blind hole, the hoisting rod is inserted into the blind hole of the bearing seat, and the bolt passes through the through holes on the two sides of the bearing seat and the through hole in the hoisting rod from left to right to reach the right side to realize connection.

[0018] As a preferred technical scheme of the present application, the explosion door assembly is a switchable explosion door structure, which comprises an explosion bolt assembly, an arc beak type connecting assembly, a type support frame assembly, an explosion outer door cover, an explosion inner door cover and an explosion diaphragm.

[0019] The explosion bolt assembly is composed of an upper right explosion bolt, an upper left explosion bolt, a lower right explosion bolt and a lower left explosion bolt, the arc beak type connecting assembly is composed of an upper arc beak type connecting piece and a lower arc beak type connecting piece, the type support frame assembly is composed of an upper type support frame and a lower type support frame, the explosion outer door cover is a rectangular metal plate, the rectangular metal plate is vertically placed, the short side is horizontally arranged as the width of the explosion outer door cover, the long side is vertically arranged as the height of the explosion outer door cover, the height of the explosion outer door cover is greater than the width of the explosion outer door cover, there is an upper limiting groove near the top edge and a lower limiting groove near the bottom edge on the right surface of the explosion outer door cover in the height direction, the explosion inner door cover is a rectangular non-metallic hard thin plate, the rectangular non-metallic hard thin plate is vertically placed, the short side is horizontally arranged as the width of the explosion inner door cover, the long side is vertically arranged as the height of the explosion inner door cover, the height of the explosion inner door cover is greater than the width of the explosion inner door cover, and the height of the explosion inner door cover is greater than the height of the explosion outer door cover, the width of the explosion inner door cover is equal to the width of the explosion outer door cover, four circular through holes are uniformly arranged at the four corner positions of the explosion inner door cover,

[0020] The explosion diaphragm is a rectangular non-metallic soft diaphragm, the thickness of the explosion diaphragm is greater than the thickness of the explosion inner door cover, and other structural dimensions of the explosion diaphragm are the same as those of the explosion inner door cover, the upper arc beak type connecting piece is a flat plate structure with a lower edge on the left side, the length of the flat plate is the same as the width of the explosion outer door cover, the width of the flat plate is less than the sum of the width of the upper type support frame and the thickness of the explosion outer door cover, and there are two threaded holes on the right end face of the flat plate in the thickness direction, the upper right explosion bolt and the upper left explosion bolt are respectively installed in the two threaded holes of the upper arc beak type connecting piece through the through holes of the explosion diaphragm, the explosion inner door cover and the upper type support frame, the left end triangular sharp edge of the upper type support frame cooperates with the upper limiting groove of the explosion outer door cover to clamp the upper end of the explosion outer door cover inside the left side lower edge of the upper arc beak type connecting piece, thereby forming the upper end fixation of the explosion door.

[0021] The lower arc beak type connecting piece has the same structure as the upper arc beak type connecting piece, the upper and lower arc beak type connecting pieces are installed in an upper and lower symmetrical manner, the lower right explosion bolt and the lower left explosion bolt are respectively installed in the two threaded holes of the lower arc beak type connecting piece through the through holes of the explosion diaphragm, the explosion inner door cover and the lower type support frame, the left end triangular sharp edge of the lower type support frame cooperates with the lower limiting groove of the explosion outer door cover to clamp the lower end of the explosion outer door cover inside the left side upper edge of the lower arc beak type connecting piece, thereby forming the lower end fixation of the explosion door.

[0022] As a preferred technical scheme of the present application, the negative pressure adsorption dust raising pipe is a circular metal pipe, one end of the negative pressure adsorption dust raising pipe is connected to a circular opening on the metal shell of the outer box body through welding, the opening through which the negative pressure adsorption dust raising pipe is connected to the tail box body is located obliquely above the position of the material entering hopper, the other end of the negative pressure adsorption dust raising pipe is connected to a vacuum pump through a pipe, the negative pressure adsorption dust raising pipe forms a negative pressure value of-0.15MPa to-0.35MPa above the position of the material entering hopper in the tail box body by controlling the vacuum pump to draw air, and the dust raised when the material enters the hopper is adsorbed by the negative pressure

[0023] As a preferred technical scheme of the present application, the material feeding port is a triangular material feeding port shape with an open top, which is a rectangular material feeding port shape, and is installed on the vertical surface of the tail outer box body through screw connection, the material feeding port is connected to the tail box body of the elevator, and the material enters the tail box body through the material feeding port.

[0024] The present application has the following advantages: the tail comprehensive performance device of the bucket elevator improves the types of transported materials, improves the bearing structure, improves the dust blocking effect, reduces the noise through negative pressure adsorption of dust, prolongs the service life of the bearing, and reduces the probability of combustion and explosion through static electricity release. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application together with the embodiments thereof, and explain the present application, but do not limit the present application. In the drawings:

[0026] Figure 1 is a test plan structure schematic diagram of the tail comprehensive performance device of the bucket elevator of the present application;

[0027] Figure 2 is a sectional plan structure schematic diagram of the tail comprehensive performance device of the bucket elevator of the present application;

[0028] Figure 3 is a plan structure schematic diagram of the hoisting and leveling assembly of the tail comprehensive performance device of the bucket elevator of the present application;

[0029] Figure 4 is a plan structure schematic diagram of the explosion-proof door assembly of the tail comprehensive performance device of the bucket elevator of the present application;

[0030] Figure 5 is a structure structure schematic diagram of the sliding dust blocking assembly of the tail comprehensive performance device of the bucket elevator of the present application.

[0031] In the diagram: 1. Lifting and leveling assembly; 1a. Lifting rod; 1b. Lifting fixing frame; 1c. Adjusting nut; 1d. Locking nut; 1e. Limiting frame nut; 1f. Lifting limiting frame; 1g. Slider locking nut; 1h. Vertical slider; 1i. Slider limiting nut; 2. Explosion-proof door assembly; 2a. Explosion-proof bolt assembly; 2b. Arc-shaped connection assembly; 2c. L-shaped support frame assembly; 2b. Explosion-proof outer door cover; 2e. Explosion-proof inner door cover; 2f. Explosion-proof diaphragm; 3. Negative pressure adsorption dust duct; 4. Material 5. Material inlet; 5. Sliding dust baffle assembly; 5a. Drive shaft; 5b. First nut; 5c. Photoelectric sensor bracket (5c); 5d. Second nut; 5e. Photoelectric sensor; 5f. Third nut; 5g. Bolt; 5h. Bearing housing; 5i. First screw; 5j. Second screw; 5k. Retaining ring; 5m. Third screw; 5n. Inner bearing ring; 5p. Bearing cap; 5q. Outer bearing ring; 5r. Fourth screw; 5s. Material baffle and light shield; 6. Static electricity gathering assembly; 7. Lead-out terminal. Detailed Implementation

[0032] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0033] Example: Figures 1-5 As shown, the present invention provides a comprehensive performance device for the tail of a bucket elevator, including a tail box, a hoisting and leveling assembly 1, two explosion-proof door assemblies 2, a negative pressure adsorption dust-raising pipe 3, and a material inlet 4. The hoisting and leveling assembly 1 is set on the top of the tail box, the explosion-proof door assemblies are installed on the front and back of the tail box, and the negative pressure adsorption dust-raising pipe 3 and the material inlet 4 are both set on the top of the front of the tail box. The invention is characterized by further including sliding dust-blocking assemblies 5 located at both ends of the rotating shaft inside the tail box, as well as electrostatic gathering assemblies 6 installed outside the rotating shaft and electrostatic discharge terminals 7 set at the bottom of one side of the tail box.

[0034] The sliding dust-blocking assembly 5 includes a drive shaft 5a, a first nut 5b, a photoelectric sensor bracket 5c, a second nut 5d, a photoelectric sensor 5e, a third nut 5f, a bolt 5g, a bearing seat 5h, a first screw 5i, a second screw 5j, a retaining ring 5k, a third screw 5m, a bearing inner ring 5n, a bearing cap 5p, a bearing outer ring 5q, a fourth screw 5r, and a material blocking and light-shielding plate 5s.

[0035] The drive shaft 5a is a two-stage stepped symmetrical axis set in the tail box, consisting of a middle section mounting shaft and left and right side bearing mounting shafts. A roller is mounted in the middle of the middle section mounting shaft via a locking mechanism. The material stop and light shield 5s is mounted on the middle section of the left side of the roller.

[0036] The bearing inner ring 5n is installed on the left bearing mounting shaft of the transmission shaft 5a by transition fit, and the bearing outer ring 5q is a two-stage stepped hole cylinder, the cross section of which is two horizontal L-shaped structures. The first stage stepped hole in the bearing outer ring 5q has a diameter larger than the inner diameter of the bearing inner ring 5n, and the difference is 2t, the value of t is in the range of 0.5mm-1.5mm. The second stage stepped hole in the bearing outer ring 5q has a diameter larger than the diameter of the first stage stepped hole, and the diameter of the second stage stepped hole in the bearing outer ring 5q is equal to the outer diameter of the bearing inner ring 5n. The length of the second stage stepped hole in the bearing outer ring 5q is greater than the length of the bearing inner ring 5n, and the difference is h, the value of h is in the range of 0.5mm-1.5mm. The length of the bearing outer ring 5q is smaller than the length of the left bearing mounting shaft of the transmission shaft 5a, and the difference is s, the value of s is in the range of 0.5mm-1.5mm. The bearing seat 5h is a lifting type horizontal base with bearing mounting holes, and screw holes are provided on both sides. The vertical plate surface of the photoelectric sensor support 5c has a first mounting hole, which is aligned with the screw hole on one side of the bearing seat 5h. The bolt 5g passes through the screw hole and the first mounting hole from left to right to connect the photoelectric sensor support 5c and the bearing seat 5h. The photoelectric sensor 5e is fixed on the photoelectric sensor support 5c.

[0037] The bearing cover 5p is a circular cup-shaped structure with two ear hole mounting holes. The cup opening end surface of the bearing cover 5p is in contact with the left end plane of the bearing outer ring 5q. The upper ear hole mounting hole of the bearing cover 5p is connected and fixed with the upper threaded hole of the bearing seat 5h by the first screw 5i. The lower ear hole mounting hole of the bearing cover 5p is connected and fixed with the lower threaded hole of the bearing seat 5h by the fourth screw 5r.

[0038] The retainer 5k is a circular plate with two mounting holes in the middle position. The diameter of the circular plate is smaller than the outer diameter of the bearing inner ring 5n, and the diameter of the circular plate is larger than the inner diameter of the bearing inner ring 5n. The second screw 5j is connected and fixed with the upper threaded hole on the left end surface of the transmission shaft 5a through the upper mounting hole of the retainer 5k. The third screw 5m is connected and fixed with the lower threaded hole on the left end surface of the transmission shaft 5a through the lower mounting hole of the retainer 5k. The right surface of the retainer 5k is in contact with the left end surface of the transmission shaft 5a, and the right surface of the retainer 5k is in contact with the left end surface of the bearing inner ring 5n.

[0039] The static electricity gathering assembly 6 includes a drum on the middle section mounting shaft, a steel wire rubber belt and a hopper. The drum is a component welded from metal material. The steel wire rubber belt is an annular flat belt with internal woven steel wire and external vulcanized rubber. There are two mounting holes in each row on the annular flat belt at certain intervals. Two bolts pass through the two mounting holes of the steel wire rubber belt and the two mounting holes in the tail box body to fix the tail box body and the steel wire rubber belt. The steel wire in the steel wire rubber belt, the bolt, the tail box body and the drum form an electric conductor. The tail box body is a container made of metal material.

[0040] The static electricity gathering assembly 6 forms a static electricity release channel through the transmission shaft 5a, the bearing inner ring 5n, the bearing outer ring 5q, the bearing seat 5h, the hoisting rod 1a, the hoisting fixing frame 1b and the tail box, and the static electricity is led out through the wire and the static electricity outlet post 7.

[0041] The middle section mounting shaft and the left and right bearing mounting shafts are all cylindrical shafts, wherein the diameter of the middle section mounting shaft is the largest, and the diameters of the left and right bearing mounting shafts are equal.

[0042] The material blocking and light shielding plate 5s is a U-shaped plate structure rotating clockwise by 90°, has a circular hole in the middle, and is fixed by interference fit through the circular hole. The bearing inner ring 5n is cylindrical, and the inner diameter of the bearing inner ring 5n is equal to the diameter of the left bearing mounting shaft of the transmission shaft 5a.

[0043] The photoelectric sensor support 5c is a right-angled plate structure, the first mounting hole of the photoelectric sensor support 5c passes through the right end of the bolt 5g and is fixed by screwing with the bolt 5g through the third nut 5f, the other horizontal plate surface of the photoelectric sensor support 5c has a second mounting hole, the photoelectric sensor 5e passes through the second mounting hole and is fixed by screwing with the threaded stud on the photoelectric sensor 5e through the first nut 5b and the second nut 5d on both sides of the second mounting hole.

[0044] The hoisting and leveling assembly 1 includes the hoisting rod 1a, the hoisting fixing frame 1b, the adjusting nut 1c, the locking nut 1d, the hoisting limiting frame 1f, the limiting frame nut 1e, the sliding block locking nut 1g, the vertical sliding block 1h and the sliding block limiting nut 1i.

[0045] The hoisting fixing frame 1b is installed on the tail box of the elevator, the hoisting rod 1a passes through the horizontal through hole of the hoisting fixing frame 1b in the vertical direction, the outer cylindrical surface of the hoisting rod 1a has external threads, the adjusting nut 1c is connected with the hoisting rod 1a by screwing, the lower surface of the adjusting nut 1c is in contact with the upper surface of the hoisting fixing frame 1b, the locking nut 1d is connected with the hoisting rod 1a by screwing, the upper surface of the locking nut 1d is in contact with the lower surface of the hoisting fixing frame 1b, the hoisting limiting frame 1f is horizontally installed on the tail box of the elevator, the hoisting limiting frame 1f is located directly below the hoisting fixing frame 1b, the limiting frame nut 1e is connected with the hoisting rod 1a by screwing, the lower surface of the limiting frame nut 1e is in contact with the upper surface of the hoisting limiting frame 1f, the vertical sliding block 1h is connected with the hoisting rod 1a by screwing through the middle threaded hole, the upper surface of the vertical sliding block 1h is in contact with the lower surface of the sliding block locking nut 1g, the sliding block locking nut 1g is connected with the hoisting rod 1a by screwing, the sliding block limiting nut 1i is connected with the hoisting rod 1a by screwing, and the upper surface of the sliding block limiting nut 1i is in contact with the lower surface of the vertical sliding block 1h.

[0046] The upper end surface of the lifting platform of the bearing seat 5h has a downward blind hole, the lifting rod 1a is inserted into the blind hole of the bearing seat 5h, and the bolt 5g is connected by penetrating the through holes on both sides of the bearing seat 5h and the through hole in the lifting rod 1a from left to right.

[0047] The explosion door assembly 2 is a switchable explosion door structure, which comprises an explosion bolt assembly 2a, an arc beak type connecting assembly 2b, an L type support frame assembly 2c, an explosion outer door cover 2d, an explosion inner door cover 2e and an explosion diaphragm 2f.

[0048] The explosion bolt assembly 2a is composed of an upper right explosion bolt, an upper left explosion bolt, a lower right explosion bolt and a lower left explosion bolt, the arc beak type connecting assembly 2b is composed of an upper arc beak type connecting piece and a lower arc beak type connecting piece, the L type support frame assembly 2c is composed of an upper L type support frame and a lower L type support frame, the explosion outer door cover 2d is a rectangular metal plate, the rectangular metal plate is vertically placed, the short side is horizontally arranged as the width of the explosion outer door cover 2d, the long side is vertically arranged as the height of the explosion outer door cover 2d, the height of the explosion outer door cover 2d is greater than the width of the explosion outer door cover 2d, there is an upper limiting groove near the top edge and a lower limiting groove near the bottom edge on the right surface of the explosion outer door cover 2d in the height direction, the explosion inner door cover 2e is a rectangular non-metallic hard sheet, the rectangular non-metallic hard sheet is vertically placed, the short side is horizontally arranged as the width of the explosion inner door cover 2e, the long side is vertically arranged as the height of the explosion inner door cover 2e, the height of the explosion inner door cover 2e is greater than the width of the explosion inner door cover 2e, and the height of the explosion inner door cover 2e is greater than the height of the explosion outer door cover 2d, the width of the explosion inner door cover 2e is equal to the width of the explosion outer door cover 2d, and four circular through holes are arranged at the four corner positions of the explosion inner door cover 2e.

[0049] The explosion diaphragm 2f is a rectangular non-metallic soft sheet, the thickness of the explosion diaphragm 2f is greater than the thickness of the explosion inner door cover 2e, and other structural dimensions of the explosion diaphragm 2f are the same as those of the explosion inner door cover 2e, the upper arc beak type connecting piece is a flat plate structure with a lower edge on the left side, the length of the flat plate is the same as the width of the explosion outer door cover 2d, the width of the flat plate is less than the sum of the width of the upper L type support frame and the thickness of the explosion outer door cover 2d, and there are two threaded holes on the right end surface of the flat plate in the thickness direction, the upper right explosion bolt and the upper left explosion bolt are respectively installed in the two threaded holes of the upper arc beak type connecting piece by penetrating the through holes of the explosion diaphragm 2f, the explosion inner door cover 2e and the upper L type support frame, and the left end triangular acute edge of the upper L type support frame cooperates with the upper limiting groove of the explosion outer door cover 2d to clamp the upper end of the explosion outer door cover 2d inside the left side lower edge of the upper arc beak type connecting piece, thereby forming the upper end fixation of the explosion door.

[0050] The lower arc beak type connector and the upper arc beak type connector are symmetrical in installation, the lower right explosion-proof bolt and the lower left explosion-proof bolt are respectively installed in two threaded holes of the lower arc beak type connector through through holes of the explosion-proof diaphragm 2f, the explosion-proof inner door cover 2e and the lower L-shaped support, the left end of the lower L-shaped support is in cooperation with the lower limiting groove of the explosion-proof outer door cover 2d, the lower end of the explosion-proof outer door cover 2d is clamped in the left side of the upper edge of the lower arc beak type connector, and the lower end of the explosion-proof door is fixed.

[0051] The negative pressure adsorption dust pipe 3 is a circular metal pipe, one end of the negative pressure adsorption dust pipe 3 is connected with the upper circular port of the metal shell of the outer box body through welding, the channel port of the negative pressure adsorption dust pipe 3 connected with the tail box body is located obliquely above the material entering hopper position, the other end of the negative pressure adsorption dust pipe 3 is connected with the vacuum pump through a pipe, the negative pressure adsorption dust pipe 3 forms a negative pressure value of-0.15MPa to-0.35MPa above the material entering hopper position of the tail box body through controlling the vacuum pump to pump air, and the dust generated when the material enters the hopper is sucked

[0052] The material feeding port 4 is a triangular body with an upper open rectangular material feeding port, which is installed on the vertical surface of the tail outer box body through screw connection, the material feeding port 4 is communicated with the tail box body of the elevator, and the material enters the tail box body through the material feeding port 4.

[0053] In one embodiment 1 of the present application, the diameter of the first stage stepped hole in the bearing outer ring 5q is greater than the inner diameter of the bearing inner ring 5n, the difference is 2t, the value of t is 1.5mm, the length of the second stage stepped hole in the bearing outer ring 5q is greater than the length of the bearing inner ring 5n, the difference is h, the value of h is 1.5mm, the length of the bearing outer ring 5q is less than the length of the left bearing mounting shaft of the transmission shaft 5a, the difference is s, the value of s is 1.5mm, and the negative pressure adsorption dust pipe 3 forms a negative pressure value of-0.15MPa above the material entering hopper position of the tail box body through controlling the vacuum pump to pump air.

[0054] In one embodiment 2 of the present application, the diameter of the first stage stepped hole in the bearing outer ring 5q is greater than the inner diameter of the bearing inner ring 5n, the difference is 2t, the value of t is 1mm, the length of the second stage stepped hole in the bearing outer ring 5q is greater than the length of the bearing inner ring 5n, the difference is h, the value of h is 1mm, and the length of the bearing outer ring 5q is less than the length of the left bearing mounting shaft of the transmission shaft 5a, the difference is s, and the value of s is 1mm.

[0055] Meanwhile, the negative pressure dust suction pipeline 3 forms a negative pressure value of-0.25 MPa above the position where the material enters the hopper of the tail box body by controlling the vacuum pump to exhaust air, so that the service life of the bearing is improved by more than 25%, the probability of explosion is reduced, and the safety factor is improved.

[0056] In one embodiment 3 of the application, the diameter of the first stage stepped hole in the bearing outer ring 5q is greater than the inner diameter of the bearing inner ring 5n, the difference is 2t, t is 0.5 mm, the length of the second stage stepped hole in the bearing outer ring 5q is greater than the length of the bearing inner ring 5n, the difference is h, h is 0.5 mm, the length of the bearing outer ring 5q is less than the length of the left bearing mounting shaft of the transmission shaft 5a, the difference is s, s is 0.5 mm, and meanwhile the negative pressure dust suction pipeline 3 forms a negative pressure value of-0.35 MPa above the position where the material enters the hopper of the tail box body by controlling the vacuum pump to exhaust air, so that the service life of the bearing is improved by more than 30%, the probability of explosion is reduced, and the safety factor is improved.

[0057] The working principle of the application is that a tail comprehensive performance device of a bucket elevator, which is currently applied to the metallurgical industry, has the problems of serious wear of sliding bearings, noise generated by bearings, and the like.

[0058] Meanwhile, since the material falls into the hopper from the material inlet 4, dust is generated, especially when the elevator transports metallurgical industry metal particle materials, the generated dust can spread and seep into the left driven wheel sliding bearing and the right driven wheel sliding bearing installed on the two ends of the transmission shaft, stay between the inner and outer rings of the sliding bearings, cause the sliding bearings to not run smoothly, generate noise, cause abrasive wear on the contact surface of the inner and outer rings of the sliding bearings, form grooves, and cause the sliding bearings to fail after a long time of running, thereby reducing the service life of the sliding bearings.

[0059] Meanwhile, in order to reduce the influence of metal dust particles, a negative pressure dust suction method is adopted, a negative pressure is arranged above the material inlet hopper to suck dust, and the spread of dust is reduced.

[0060] Since the bucket elevator is often used for conveying flammable and explosive materials such as sulfur, coal powder, rosin, calcium carbide and red phosphorus, in order to prevent the accumulation of static electricity from producing sparks to ignite flammable materials and cause explosion, a bolt is installed between the steel wire and the hopper in the steel wire belt, and a metal lap joint opportunity is added during the transmission of the steel wire belt and the roller, so as to ensure that the hopper, the bolt, the steel wire belt, the roller, the shaft, the bearing seat and the outer box form a static electricity conductor, and through the wire, the static electricity is discharged to the terminal 7 and the ground wire to form a static electricity release channel, so as to ensure that no static electricity accumulates in the tail transmission device of the elevator, avoid the generation of static electricity sparks, prevent the ignition of flammable materials, form combustion and explosion, and at the same time, an explosion-proof door assembly is installed on the tail box of the elevator to prevent damage to the equipment by explosion shock wave, form a release channel of explosion shock wave, reduce the damage to the equipment caused by explosion shock force, at the same time, the safety factor of the workers is increased, and the working efficiency of the elevator is indirectly improved.

[0061] In the description of the present application, it should be noted that the terms "vertical", "upper", "lower", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements 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.

[0062] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. 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.

[0063] Finally, it should be pointed out that: the above-mentioned is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A comprehensive performance device for the tail section of a bucket elevator, comprising a tail section housing, a hoisting and leveling assembly (1), two explosion-proof door assemblies (2), a negative pressure adsorption dust-raising pipe (3), and a material inlet (4), wherein the hoisting and leveling assembly (1) is located on the top of the tail section housing, the explosion-proof door assemblies (2) are installed on the front and back of the tail section housing, and the negative pressure adsorption dust-raising pipe (3) and the material inlet (4) are both located on the top of the front of the tail section housing, characterized in that: It also includes sliding dust-blocking components (5) located at both ends of the drive shaft inside the tail box, as well as static electricity gathering components (6) installed outside the drive shaft and static electricity discharge terminals (7) set at the bottom of one side of the tail box. The sliding dust-blocking assembly (5) includes a drive shaft (5a), a first nut (5b), a photoelectric sensor bracket (5c), a second nut (5d), a photoelectric sensor (5e), ​​a third nut (5f), a bolt (5g), a bearing seat (5h), a first screw (5i), a second screw (5j), a retaining ring (5k), a third screw (5m), an inner bearing ring (5n), a bearing cap (5p), an outer bearing ring (5q), a fourth screw (5r), and a material blocking and light-shielding plate (5s). The drive shaft (5a) is a two-stage stepped symmetrical shaft set in the tail box. It consists of a middle section mounting shaft and left and right bearing mounting shafts. A roller is mounted in the middle of the middle section mounting shaft through a locking mechanism. The material blocking and light-shielding plate (5s) is installed on the middle section of the left side of the roller. The bearing inner ring (5n) is mounted on the left bearing mounting shaft of the drive shaft (5a) through an transition fit. The bearing outer ring (5q) is a cylinder with two stepped holes and its cross-section is two horizontal L-shaped structures. The diameter of the first stepped hole in the bearing outer ring (5q) is larger than the inner diameter of the bearing inner ring (5n), and the difference is 2t, where t ranges from 0.5mm to 1.5mm. The diameter of the second-stage stepped hole in the outer ring (5q) of the bearing is greater than the diameter of the first-stage stepped hole. The diameter of the second-stage stepped hole in the outer ring (5q) of the bearing is equal to the outer diameter of the inner ring (5n) of the bearing. The length of the second-stage stepped hole in the outer ring (5q) of the bearing is greater than the length of the inner ring (5n) of the bearing, and the difference is h, with h ranging from 0.5mm to 1.5mm. The length of the outer ring (5q) of the bearing is less than the length of the left bearing mounting shaft of the drive shaft (5a), and the difference is s, with s ranging from 0.5mm to 1.5mm. The bearing housing (5h) The base is a horizontal, hoisting type with bearing mounting holes. Screw holes are opened through both sides. The vertical plate of the photoelectric sensor bracket (5c) has a first mounting hole, which is aligned with the screw hole on one side of the bearing seat (5h). A bolt (5g) passes through the screw hole and the first mounting hole from left to right to connect the photoelectric sensor bracket (5c) and the bearing seat (5h), and is fixed by a third nut (5f). The photoelectric sensor (5e) is fixed on the photoelectric sensor bracket (5c) through the second mounting hole, and is fixed by a first nut (5b) and a second nut (5d). The bearing cap (5p) is a circular cup-shaped structure with two mounting lug holes. The cup mouth end face of the bearing cap (5p) contacts the left end plane of the bearing outer ring (5q). The upper lug hole of the bearing cap (5p) is connected and fixed to the upper threaded hole of the bearing housing (5h) by the first screw (5i). The lower lug hole of the bearing cap (5p) is connected and fixed to the lower threaded hole of the bearing housing (5h) by the fourth screw (5r). The retaining ring (5k) is a circular plate with two mounting holes at the top and bottom near the center. The diameter of the circular plate is smaller than the outer diameter of the bearing inner ring (5n) and larger than the inner diameter of the bearing inner ring (5n). The second screw (5j) is connected and fixed to the threaded hole on the left end face of the drive shaft (5a) through the upper mounting hole of the retaining ring (5k). The third screw (5m) is connected and fixed to the lower threaded hole on the left end face of the drive shaft (5a) through the lower mounting hole of the retaining ring (5k). The right surface of the retaining ring (5k) is in contact with the left end face of the drive shaft (5a) and the right surface of the retaining ring (5k) is in contact with the left end face of the bearing inner ring (5n). The electrostatic gathering assembly (6) includes a roller, a steel wire belt, and a hopper located on the mounting shaft in the middle section. The roller is a component welded from metal materials. The steel wire belt is an annular flat belt with internally woven steel wire and externally vulcanized rubber. There are two mounting holes on each row of the annular flat belt at certain intervals. Two bolts fix the hopper to the steel wire belt through the two mounting holes of the steel wire belt and the two mounting holes inside the hopper, respectively. An electrical conductor is formed between the steel wire inside the steel wire belt, the bolts, the hopper, and the roller. The hopper is a container made of metal materials. The electrostatic collection assembly (6) forms an electrostatic discharge channel through the drive shaft (5a), the inner ring of the bearing (5n), the outer ring of the bearing (5q), the bearing seat (5h), the hoisting rod (1a), the hoisting fixing frame (1b), and the tail box. The electrostatic discharge terminal (7) is grounded through the wire. The hoisting fixing frame (1b) is installed on the tail box. The hoisting rod (1a) passes vertically through the horizontal through hole on the hoisting fixing frame (1b). There is a downward blind hole on the upper surface of the hoisting platform of the bearing seat (5h). The hoisting rod (1a) is inserted into the blind hole of the bearing seat (5h). The bolt (5g) passes from left to right through the through holes on both sides of the bearing seat (5h) and the through hole in the hoisting rod (1a) to reach the right side to achieve connection.

2. The bucket elevator tail comprehensive performance device according to claim 1, characterized in that: The middle section mounting shaft and the left and right bearing mounting shafts are all cylindrical shafts, with the middle section mounting shaft having the largest diameter, while the left and right bearing mounting shafts have the same diameter.

3. The bucket elevator tail comprehensive performance device according to claim 2, characterized in that: The baffle plate (5s) is a U-shaped plate structure that rotates 90° clockwise, with a circular hole in the middle. The middle section mounting shaft passes through the circular hole of the baffle plate (5s) and is fixed by interference fit. The bearing inner ring (5n) is cylindrical, and the inner diameter of the bearing inner ring (5n) is equal to the diameter of the left bearing mounting shaft of the transmission shaft (5a).

4. The bucket elevator tail comprehensive performance device according to claim 1, characterized in that: The photoelectric sensor bracket (5c) is a right-angled plate structure. The first mounting hole of the photoelectric sensor bracket (5c) passes through the right end of the bolt (5g) and is fixed to the bolt (5g) by threaded connection through the third nut (5f). The other horizontal plate surface of the photoelectric sensor bracket (5c) has a second mounting hole. The photoelectric sensor (5e) passes through the second mounting hole and is fixed to the stud on the photoelectric sensor (5e) by threaded connection through the first nut (5b) and the second nut (5d) on both sides of the second mounting hole.

5. The bucket elevator tail comprehensive performance device according to claim 1, characterized in that: The hoisting and leveling assembly (1) includes a hoisting rod (1a), a hoisting fixing frame (1b), an adjusting nut (1c), a locking nut (1d), a hoisting limiting frame (1f), a limiting frame nut (1e), a slider locking nut (1g), a vertical slider (1h), and a slider limiting nut (1i). The lifting rod (1a) has external threads on its outer cylindrical surface. The adjusting nut (1c) is threaded to the lifting rod (1a), and the lower surface of the adjusting nut (1c) contacts the upper surface of the lifting fixing frame (1b). The locking nut (1d) is threaded to the lifting rod (1a), and the upper surface of the locking nut (1d) contacts the lower surface of the lifting fixing frame (1b). The lifting limit frame (1f) is horizontally installed on the tail section of the machine body, and is located directly below the lifting fixing frame (1b). The limit frame nut (1e) is connected to the lifting rod. (1a) The lower surface of the limit frame nut (1e) is in contact with the upper surface of the hoisting limit frame (1f) through a threaded connection. The vertical slider (1h) is connected to the hoisting rod (1a) through the middle threaded hole. The upper surface of the vertical slider (1h) is in contact with the lower surface of the slider locking nut (1g). The slider locking nut (1g) is connected to the hoisting rod (1a) through a threaded connection. The slider limit nut (1i) is connected to the hoisting rod (1a) through a threaded connection. The upper surface of the slider limit nut (1i) is in contact with the lower surface of the vertical slider (1h).

6. The bucket elevator tail comprehensive performance device according to claim 1, characterized in that: The explosion-proof door assembly (2) is an openable explosion-proof door structure, which includes an explosion-proof bolt assembly (2a), an arc-shaped connection assembly (2b), an L-shaped support frame assembly (2c), an explosion-proof outer door cover (2d), an explosion-proof inner door cover (2e), and an explosion-proof diaphragm (2f); The explosion-proof bolt assembly (2a) consists of an upper right-side explosion-proof bolt, an upper left-side explosion-proof bolt, a lower right-side explosion-proof bolt, and a lower left-side explosion-proof bolt; the arc-shaped connecting assembly (2b) consists of an upper arc-shaped connector and a lower arc-shaped connector; the L-shaped support frame assembly (2c) consists of an upper L-shaped support frame and a lower L-shaped support frame; the explosion-proof outer door cover (2d) is a rectangular metal plate, placed vertically, with the shorter side being the width of the explosion-proof outer door cover (2d) in the horizontal direction and the longer side being the height of the explosion-proof outer door cover (2d) in the vertical direction. The height of the explosion-proof outer door cover (2d) is greater than its width. The right side of the explosion-proof outer door cover (2d)... The inner explosion-proof cover (2e) has an upper limit groove near the top edge and a lower limit groove near the bottom edge in the height direction; the inner explosion-proof cover (2e) is a rectangular non-metallic rigid thin plate, which is placed vertically. The short side is the width of the inner explosion-proof cover (2e) in the horizontal direction, and the long side is the height of the inner explosion-proof cover (2e) in the vertical direction. The height of the inner explosion-proof cover (2e) is greater than the width of the inner explosion-proof cover (2e), and the height of the inner explosion-proof cover (2e) is greater than the height of the outer explosion-proof cover (2d). The width of the inner explosion-proof cover (2e) is equal to the width of the outer explosion-proof cover (2d). Four circular through holes are evenly distributed at the four corners of the inner explosion-proof cover (2e). The explosion-proof diaphragm (2f) is a rectangular non-metallic soft diaphragm. The thickness of the explosion-proof diaphragm (2f) is greater than the thickness of the explosion-proof inner door cover (2e). The other structural dimensions of the explosion-proof diaphragm (2f) are the same as those of the explosion-proof inner door cover (2e). The upper arc-shaped connector is a flat plate structure with a lower edge on the left side. The length of the flat plate is the same as the width of the explosion-proof outer door cover (2d). The width of the flat plate is less than the sum of the width of the upper L-shaped support frame and the thickness of the explosion-proof outer door cover (2d). The thickness of the flat plate is... There are two threaded holes on the right end face near the two sides. The explosion-proof bolts on the upper right and upper left pass through the explosion-proof diaphragm (2f), the explosion-proof inner door cover (2e), and the through hole of the upper L-shaped support frame and are installed in the two threaded holes of the upper arc-shaped connector. The sharp edge of the left triangular side of the upper L-shaped support frame is matched with the upper limit groove of the explosion-proof outer door cover (2d) to clamp the upper end of the explosion-proof outer door cover (2d) inside the lower left side of the upper arc-shaped connector, thus fixing the upper end of the explosion-proof door. The lower arc-shaped connector has the same structure as the upper arc-shaped connector. The lower arc-shaped connector and the upper arc-shaped connector are installed in a symmetrical manner. The explosion-proof bolts on the lower right and lower left pass through the explosion-proof diaphragm (2f), the explosion-proof inner door cover (2e), and the through holes of the lower L-shaped support frame and are installed in the two threaded holes of the lower arc-shaped connector. The sharp edge of the left triangular side of the lower L-shaped support frame is engaged with the lower limit groove of the explosion-proof outer door cover (2d) to clamp the lower end of the explosion-proof outer door cover (2d) inside the upper left side of the lower arc-shaped connector, thus fixing the lower end of the explosion-proof door.

7. The bucket elevator tail comprehensive performance device according to claim 1, characterized in that: The negative pressure adsorption dust-raising pipe (3) is a circular metal pipe. One end of the negative pressure adsorption dust-raising pipe (3) is connected to the circular opening on the metal shell of the tail box by welding. The channel opening connecting the negative pressure adsorption dust-raising pipe (3) to the tail box is located obliquely above the material entry hopper position. The other end of the negative pressure adsorption dust-raising pipe (3) is connected to a vacuum pump through a pipe. The negative pressure adsorption dust-raising pipe (3) draws air by controlling the vacuum pump to form a negative pressure above the material entry hopper position in the tail box. The negative pressure value ranges from -0.15MPa to -0.35MPa and is used to extract the dust generated when the material enters the hopper.

8. The bucket elevator tail comprehensive performance device according to claim 1, characterized in that: The material inlet (4) is an open shape at the top of a triangular prism and is installed on the vertical surface of the tail box by screw connection. The material inlet (4) is connected to the tail box and the material enters the tail box through the material inlet (4).

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