An adjustable multi-section briquette transfer anti-sliding chute

Abstract

This invention relates to an adjustable multi-section coal briquette transfer anti-fall chute. The chute is shaped like an inverted Y, including an upper inlet head funnel and a lower branched chute. At the branching point of the branched chute, there is a three-section adjustable discharge plate, which includes, from top to bottom, a first adjustable vertical screen plate, a second fixed vertical screen plate, and a third adjustable vertical screen plate. The upper end of the first adjustable vertical screen plate is connected to an adjusting shaft, which can swing up and down to adjust its position under the drive of a hydraulic drive device. The lower end of the third adjustable vertical screen plate is connected to three adjusting shafts, which can also swing up and down to adjust their position under the drive of three hydraulic drive devices. The upper and lower ends of the second fixed vertical screen plate are respectively connected to the first and third adjustable vertical screen plates. This invention can reduce the coal briquette breakage rate during transportation and transfer, and achieve decentralized transportation of broken coal briquettes and loose coal.

Description

Technical Field

[0001] This invention belongs to the field of coking coal preparation technology, and in particular relates to an adjustable multi-stage coal transfer anti-fall chute. Background Technology

[0002] Coal briquette technology is an important technology in the pretreatment process of coking coal preparation. It is also applied in the preparation technology of new high-strength and high-reactivity coke to realize the "core and shell" binary coal blending structure. However, in the industrial test of the high-strength and high-reactivity coke preparation technology, it was found that the breakage rate of coal briquettes using traditional transfer chutes is relatively high, and the pulverized coal produced after crushing is prone to clogging the coal material and generating a large amount of dust.

[0003] Chinese patent document CN107662825A proposes a curved coal drop pipe four-way material guiding device and its control method, including a four-way shell, and a baffle assembly inside the four-way shell, which satisfies the problem of material transfer during the separate transportation of briquettes and loose coal, but cannot achieve the problem of synchronous transportation of briquettes and loose coal.

[0004] Chinese utility model patent CN206156191U provides a curved coal chute, comprising a roller guard, a funnel, and a coal conveying pipe connected sequentially from top to bottom to form a transfer channel. The roller guard contains an adjusting plate for changing the direction of coal flow; the adjusting plate is a grid plate with a base plate, and the grid within the grid plate is used to accommodate loose material. The coal conveying pipe has a circular cross-section and a curved axis. This design not only effectively reduces the severe impact wear problem in existing coal chutes but also overcomes material stagnation and blockage within the conveying pipe, improving transfer efficiency while extending service life. However, this patent cannot solve the problem of briquette breakage and damage from impact. Summary of the Invention

[0005] In order to overcome the shortcomings of existing technologies and solve the problem of high briquette breakage rate during briquette transportation in the high-strength and high-reactivity coke preparation process, this invention provides an adjustable multi-stage briquette transfer anti-fall chute, which ensures that the material drop speed, acceleration and impact force are controllable and adjustable during transportation, reduces the briquette breakage rate, and realizes the decentralized transportation of broken briquettes and loose coal.

[0006] To achieve the above objectives, the present invention employs the following technical solution:

[0007] An adjustable multi-section coal transfer anti-fall chute is disclosed. The chute is shaped like an inverted Y, including an upper inlet head funnel and a lower branched chute. At the branching point of the branched chute, a three-section adjustable discharge plate is provided. The three-section adjustable discharge plate includes, from top to bottom, a first adjustable vertical screen plate, a second fixed vertical screen plate, and a third adjustable vertical screen plate. The upper end of the first adjustable vertical screen plate is connected to an adjusting shaft, which can swing up and down to adjust its position under the drive of a hydraulic drive device. The lower end of the third adjustable vertical screen plate is connected to three adjusting shafts, which can also swing up and down to adjust their position under the drive of three hydraulic drive devices. The upper and lower ends of the second fixed vertical screen plate are respectively connected to the first and third adjustable vertical screen plates.

[0008] It also includes an inlet coal briquette belt conveyor, a transfer regulating plate, an outlet coal briquette belt conveyor, and an outlet bulk coal belt conveyor. The inlet coal briquette belt conveyor is located at the inlet of the inlet head funnel. The transfer regulating plate is located at the outlet end of the inlet coal briquette belt conveyor. The outlet coal briquette belt conveyor and the outlet bulk coal belt conveyor are respectively located at the two outlets of the bifurcation chute.

[0009] The adjustable vertical screen plate is composed of multiple vertical round steel bars arranged horizontally, with a screen plate reinforcing rib connecting the round steel bars. The spacing between the round steel bars is 10-30mm.

[0010] The swing adjustment angle of the adjustable vertical screen plate is the angle α between the adjustable vertical screen plate and the vertical sidewall of the bifurcated chute, which is 22 to 28°.

[0011] The three-section adjustable vertical screen plate is composed of multiple vertical round steel bars arranged horizontally, with a screen plate reinforcing rib connecting the round steel bars. The spacing between the round steel bars is 10-30mm.

[0012] The swing adjustment angle of the three-section adjustable vertical screen plate is β = 32~38° between the three-section adjustable vertical screen plate and the horizontal line.

[0013] The two-section fixed vertical screen plate is composed of multiple vertical round steel bars arranged horizontally. The round steel bars are connected by reinforcing ribs of the two-section screen plate. The spacing between the round steel bars is 10-30mm. The round steel bars on the two-section fixed vertical screen plate are interleaved with the round steel bars on the one-section adjustable vertical screen plate and the three-section adjustable vertical screen plate, respectively.

[0014] The two-section fixed vertical screen plate is fixedly connected to the bifurcated chute through the reinforcing ribs of the two-section screen plate.

[0015] Based on the transport speed, angle, and capacity of the imported coal briquette belt conveyor, adjust the angles of the first and third adjustable vertical screen plates to control the maximum flow speed of the coal briquettes in the branch chute to 2.0–3.0 m / s, thereby minimizing the impact force on the inner wall of the chute.

[0016] The coal breakage rate should be controlled below 5%.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] An adjustable multi-stage briquette transfer anti-fall chute can ensure that the material drop speed, acceleration and impact force are controllable and adjustable during transportation and transfer, reduce the briquette breakage rate, and realize the decentralized transportation of broken briquettes and loose coal. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an adjustable multi-section coal transfer anti-fall chute according to the present invention.

[0020] Figure 1 1. Imported coal briquette belt conveyor 2. Imported head funnel 3. Transfer adjustment plate 4. Branch chute 5. Three-section adjustable discharge plate 6. Exported coal briquette belt conveyor 7. Exported bulk coal belt conveyor 510. Single-stage hydraulic drive device 511. Three-stage hydraulic drive device.

[0021] Figure 2 This is a schematic diagram of a three-section adjustable material drop plate structure.

[0022] Figure 2 501. First-stage adjusting shaft 502. First-stage adjustable vertical sieve plate 503. First-stage sieve plate reinforcing rib 504. Second-stage sieve plate reinforcing rib (I) 505. Second-stage fixed vertical sieve plate 506. Second-stage sieve plate reinforcing rib (II) 507. Third-stage sieve plate reinforcing rib 508. Third-stage adjustable vertical sieve plate 509. Third-stage adjusting shaft Detailed Implementation

[0023] The present invention will be further described in detail below with reference to specific embodiments, but it should not be construed as limiting the scope of the invention to the following examples. Various substitutions or modifications made based on ordinary technical knowledge and common technical means in the art without departing from the above-described technical concept of the present invention should be included within the scope of the present invention.

[0024] See Figures 1-2An adjustable multi-section coal transfer anti-fall chute is disclosed. The chute is shaped like an inverted Y, including an upper inlet head funnel 2 and a lower branch chute 4. A three-section adjustable discharge plate 5 is provided at the branching point of the branch chute 4. The three-section adjustable discharge plate 5 includes a first adjustable vertical screen plate 502, a second fixed vertical screen plate 505, and a third adjustable vertical screen plate 508 arranged sequentially from top to bottom. The upper end of the first adjustable vertical screen plate 502 is connected to an adjusting shaft 501, which can swing up and down to adjust its position under the drive of a hydraulic drive device 510. The lower end of the third adjustable vertical screen plate 508 is connected to a third adjusting shaft 509, which can swing up and down to adjust its position under the drive of a hydraulic drive device 511. The upper and lower ends of the second fixed vertical screen plate 505 are respectively connected to the first adjustable vertical screen plate 502 and the third adjustable vertical screen plate 508.

[0025] It also includes an inlet briquette belt conveyor 1, a transfer regulating plate 3, an outlet briquette belt conveyor 5, and an outlet bulk coal belt conveyor 7. The inlet briquette belt conveyor 1 is located at the inlet of the inlet head funnel 2. The transfer regulating plate 3 is located at the outlet end of the inlet briquette belt conveyor 1. The outlet briquette belt conveyor 6 and the outlet bulk coal belt conveyor 7 are located at the two outlets of the bifurcation chute, respectively. The outlet briquette belt conveyor 6 is located at the briquette outlet, and the outlet bulk coal belt conveyor 7 is located at the bulk coal outlet below the three-section regulating discharge plate 5. The transfer regulating plate 3 is vertically hinged at the inlet of the inlet head funnel 2 and can be adjusted at its angle under the drive of a hydraulic cylinder, thereby changing the discharge speed of the inlet briquette belt conveyor 1.

[0026] An adjustable vertical screen plate 502 is composed of multiple vertical round steel bars arranged horizontally, with a screen plate reinforcing rib 503 connecting the round steel bars. The spacing between the round steel bars is 10-30mm.

[0027] The swing adjustment angle of the adjustable vertical screen plate 502 is the angle α between the adjustable vertical screen plate 502 and the vertical side wall of the bifurcated chute 4, which is 22 to 28°.

[0028] The three-section adjustable vertical screen plate 508 is composed of multiple vertical round steel bars arranged horizontally, with three-section screen plate reinforcing ribs 507 connecting the round steel bars, and the spacing between the round steel bars is 10-30mm.

[0029] The swing adjustment angle of the three-section adjustable vertical screen plate 508 is β = 32~38° between the three-section adjustable vertical screen plate 508 and the horizontal line.

[0030] The two-section fixed vertical screen plate 505 is composed of multiple vertical round steel bars arranged horizontally. The round steel bars are connected by reinforcing ribs of the two-section screen plate. The spacing between the round steel bars is 10-30mm. The round steel bars on the two-section fixed vertical screen plate 505 are interleaved with the round steel bars on the one-section adjustable vertical screen plate 502 and the three-section adjustable vertical screen plate 508.

[0031] The two-section fixed vertical screen plate 505 is fixedly connected to the bifurcated chute 4 through the reinforcing ribs of the two-section screen plate.

[0032] Based on the transport speed, angle, and capacity of the imported briquette belt conveyor, adjust the angles of the first-stage adjustable vertical screen plate 502 and the third-stage adjustable vertical screen plate 508 to control the maximum flow velocity of the briquettes within the branch chute 4 to be between 2.0 and 3.0 m / s.

[0033] The coal breakage rate should be controlled below 5%.

[0034] The screening efficiency of the three-stage adjustable discharge plate 5 is greater than 85%.

[0035] Example 1:

[0036] The three-section adjustable discharge plate 5 has the following mechanism: a first-section adjusting shaft 501 and a third-section adjusting shaft 509 are respectively connected to the body of the bifurcated chute 4 via bearings; the first-section adjusting shaft 501 is fixedly connected to a first-section adjustable vertical screen plate 502, the other side of which is a movable side, and a reinforcing rib plate 503 is provided near the end to ensure the strength of the screen plate. A hydraulic drive device 510 is hinged to the body of the bifurcated chute 4, and drives the first-section adjusting shaft 501 to rotate via a connecting rod. One end of the connecting rod is hinged to the first-section hydraulic drive device 510, and the other end is fixedly connected to the first-section adjusting shaft 501. The first-section adjusting shaft 501 drives the first-section adjustable vertical screen plate 502 to swing up and down, thereby adjusting its setting angle.

[0037] The three-section adjusting shaft 509 is fixedly connected to the three-section adjustable vertical screen plate 508. The other side of the three-section adjustable vertical screen plate 508 is a movable side, and three reinforcing ribs 507 are provided near the end to ensure the strength of the screen plate. The three-section hydraulic drive device 511 is also hinged to the body of the bifurcated chute 4. It drives the three-section adjusting shaft 509 to rotate through a connecting rod. One end of the connecting rod is hinged to the three-section hydraulic drive device 511, and the other end is fixedly connected to the three-section adjusting shaft 509. The three-section adjusting shaft 509 drives the three-section adjustable vertical screen plate 508 to swing up and down, thereby adjusting the setting angle of the three-section adjustable vertical screen plate 506. Two fixed vertical screen plates 505 are provided between the one-section adjustable vertical screen plate 502 and the three-section adjustable vertical screen plate 508. The two-section fixed vertical screen plate 505 is provided with two-section screen plate reinforcing ribs (I) 504 and two-section screen plate reinforcing ribs (II) 506, which are connected and fixed to the bifurcated chute.

[0038] The adjustable vertical screen plate 502, the fixed vertical screen plate 505, and the adjustable vertical screen plate 508 are each composed of vertical round steel bars with a spacing of 14mm.

[0039] The round steel arrangement of the two fixed vertical screen plates 505 is staggered from the original steel arrangement of the one adjustable vertical screen plate 502 and the three adjustable vertical screen plates 508, and they are intersected at the junction.

[0040] The swing adjustment angle of the single-section adjustable vertical screen plate is the angle α between the single-section adjustable vertical screen plate and the vertical sidewall of the bifurcated chute, which is 22-28°. The swing adjustment angle of the three-section adjustable vertical screen plate is the angle β between the three-section adjustable vertical screen plate and the horizontal line, which is 32-38°.

[0041] In this embodiment, the maximum flow velocity of the briquettes in the branch chute 4 is controlled at 2.0 m / s.

[0042] In this embodiment, the briquette breakage rate is controlled below 5%. The screening efficiency of the three-stage adjustable feed plate is 85%.

[0043] The working process of the example is as follows:

[0044] Briquettes enter the inlet head funnel 2 via the inlet briquette belt conveyor 1. The inlet head funnel 2 is equipped with a transfer regulating plate 3 to adjust the flow rate and impact force during briquette transfer. The briquettes then enter the branch chute 4. A three-section adjusting discharge plate 5 is installed in the branch chute 4 to continuously adjust the angle and direction of each section, ensuring minimal impact force, acceleration, and running speed on the briquettes during the discharge process, maximizing the briquette balling rate during transfer. After transfer, the majority of the briquettes fall into the outlet briquette belt conveyor 6, while a small portion of crushed loose coal falls into the outlet loose coal belt conveyor 7.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An adjustable multi-stage briquette transfer anti-fall chute, characterized in that, The chute is shaped like an inverted Y, including an upper inlet funnel and a lower branched chute. At the branching point of the branched chute, there is a three-section adjustable discharge plate, which includes, from top to bottom, a first adjustable vertical screen plate, two fixed vertical screen plates, and a third adjustable vertical screen plate. The upper end of the first adjustable vertical screen plate is connected to an adjusting shaft, which can swing up and down to adjust its position under the drive of a hydraulic drive device. The lower end of the third adjustable vertical screen plate is connected to three adjusting shafts. Driven by a three-stage hydraulic drive device, it can swing up and down to adjust its position; the upper and lower ends of the two-stage fixed vertical screen plate are respectively connected to the one-stage adjustable vertical screen plate and the three-stage adjustable vertical screen plate; the one-stage adjustable vertical screen plate is composed of multiple vertical round steel bars arranged horizontally, and the round steel bars are connected by a screen plate reinforcing rib; the two-stage fixed vertical screen plate is composed of multiple vertical round steel bars arranged horizontally, and the round steel bars on the two-stage fixed vertical screen plate are respectively connected to the round steel bars on the one-stage adjustable vertical screen plate and the three-stage adjustable vertical screen plate in an alternating manner.

2. The adjustable multi-stage briquette transfer anti-fall chute according to claim 1, characterized in that, It also includes an inlet coal briquette belt conveyor, a transfer regulating plate, an outlet coal briquette belt conveyor, and an outlet bulk coal belt conveyor. The inlet coal briquette belt conveyor is located at the inlet of the inlet head funnel. The transfer regulating plate is located at the outlet end of the inlet coal briquette belt conveyor. The outlet coal briquette belt conveyor and the outlet bulk coal belt conveyor are respectively located at the two outlets of the bifurcation chute.

3. The adjustable multi-stage briquette transfer anti-fall chute according to claim 1, characterized in that, The spacing between the round steel bars of an adjustable vertical screen plate is 10-30mm.

4. An adjustable multi-stage briquette transfer anti-fall chute according to claim 1 or 3, characterized in that, The swing adjustment angle of the adjustable vertical screen plate is the angle α between the adjustable vertical screen plate and the vertical sidewall of the bifurcated chute, which is 22 to 28°.

5. The adjustable multi-stage briquette transfer anti-fall chute according to claim 1, characterized in that, The three-section adjustable vertical screen plate is composed of multiple vertical round steel bars arranged horizontally, with a screen plate reinforcing rib connecting the round steel bars. The spacing between the round steel bars is 10-30mm.

6. An adjustable multi-stage briquette transfer anti-fall chute according to claim 1 or 5, characterized in that, The swing adjustment angle of the three-section adjustable vertical screen plate is the angle β between the three-section adjustable vertical screen plate and the horizontal line, which is 32 to 38°.

7. The adjustable multi-stage briquette transfer anti-fall chute according to claim 1, characterized in that, The two sections of fixed vertical screen plate are connected by reinforcing ribs, and the spacing between the two sections of fixed vertical screen plate round steel is 10-30mm.

8. The adjustable multi-stage briquette transfer anti-fall chute according to claim 7, characterized in that, The two-section fixed vertical screen plate is fixedly connected to the bifurcated chute through the reinforcing ribs of the two-section screen plate.

9. The adjustable multi-stage briquette transfer anti-fall chute according to claim 1, characterized in that, The maximum flow velocity of briquettes in the branched chute is controlled at 2.0 to 3.0 m / s to minimize the impact on the inner wall of the chute.

10. The adjustable multi-stage briquette transfer anti-fall chute according to claim 1, characterized in that, The coal breakage rate should be controlled below 5%.

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