Bulk material silo arch breaking device

Abstract

The utility model relates to a kind of bulk material silo arch breaking devices, with casing, upper flange, lower flange and rotary sleeve, scraper is fixed in rotary sleeve inner wall, rotary inner support fixed with lower flange is equipped in rotary sleeve periphery, rotary outer support is rotatably equipped in rotary inner support periphery, rotary outer support is fixed with rotary sleeve through rotary flange, upper flange is fixed with upper flange disc on upper flange, lower flange disc is fixed with lower flange disc on lower flange lower end surface, upper helical groove is opened on upper flange disc inner periphery, first air inlet hole for high-pressure gas is introduced into upward helical groove on upper flange disc, lower helical groove is opened on lower flange disc inner periphery, second air inlet hole for high-pressure gas is introduced into downward helical groove on lower flange disc.The utility model passes through high-pressure gas and is introduced into upward helical groove and lower helical groove, forms a kind of air pressure sealing structure, cooperates conventional oil seal, effectively prevents that small dust in material enters device inside, more preferably improve the sealing effect of arch breaking device.

Description

Technical Field

[0001] This utility model relates to the field of material conveying equipment technology, and in particular to an arch-breaking device for bulk material silos. Background Technology

[0002] In existing material conveying processes, the continuous conveying of bulk materials such as powders, small granules, and small lumps is basically carried out using pneumatic conveying systems for horizontal, inclined, or vertical combined conveying. Pneumatic conveying has advantages such as being sealed and dust-free, environmentally friendly and safe, and highly efficient.

[0003] However, when these bulk materials exit the conical discharge port of the silo and enter the pneumatic conveying system, they easily aggregate and form bridging structures within the discharge port due to their material characteristics, causing material blockage and preventing normal discharge. Therefore, a bridging device is generally installed at the silo discharge port, which uses a rotating scraper to break up the aggregated material, ensuring smooth flow of material into the conveying system.

[0004] However, for the current arch-breaking device structure, since the scraper is driven by a gear mechanism, fine dust contained in the material can easily enter the box, affecting the gear transmission accuracy. Although the current structure is equipped with corresponding sealing rings, some dust still enters the gear box under the air pressure of pneumatic conveying. Summary of the Invention

[0005] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides a silo-breaking device for bulk materials with high sealing performance.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a device for breaking up arches in a bulk material silo, comprising a housing, an upper flange fixed to the upper end face of the housing, a lower flange fixed to the lower end face of the housing, a rotating sleeve rotatably disposed inside the housing, a scraper that can extend into the material discharge port of the silo fixed to the inner wall of the rotating sleeve, an inner rotating support fixed to the lower flange on the outer periphery of the rotating sleeve, and an outer rotating support rotatably disposed on the outer periphery of the inner rotating support, the upper end face of the outer rotating support being fixed to the rotating sleeve through the rotating flange. An upper flange is fixed to the upper end face of the upper flange, and a lower flange is fixed to the lower end face of the lower flange. The inner circumferential surface of the upper flange is in clearance fit with the upper end of the outer circumferential surface of the rotating sleeve, and the inner circumferential surface of the lower flange is in clearance fit with the lower end of the outer circumferential surface of the rotating sleeve. An upper spiral groove is formed on the inner circumferential surface of the upper flange, and a first air inlet hole for high-pressure gas to be introduced into the upper spiral groove is formed radially on the upper flange. A lower spiral groove is formed on the inner circumferential surface of the lower flange, and a second air inlet hole for high-pressure gas to be introduced into the lower spiral groove is formed radially on the lower flange.

[0007] Specifically, a gear mechanism is provided next to the housing to drive the rotation of the outer support. The gear mechanism includes a transmission housing, a geared motor is installed on the upper end face of the transmission housing, and a driving gear and a driven gear are rotatably installed inside the transmission housing. The driving gear is connected to the output shaft of the geared motor for transmission. The driving gear and the driven gear mesh and transmit power. An outer gear ring is provided on the outer circumferential surface of the outer support for transmission with the driven gear.

[0008] Furthermore, an arc-shaped plate is fixed on the inner peripheral wall of the rotary sleeve, and the scraper is fixed on the arc-shaped plate.

[0009] Preferably, the upper end of the scraper is an inclined plate that fits against the inner side of the conical discharge port of the hopper, and the lower end of the scraper is a straight plate that penetrates downward through the rotating sleeve.

[0010] Furthermore, oil seals are provided between the upper flange and the outer circumferential surface of the rotating sleeve below the upper spiral groove, and between the lower flange and the outer circumferential surface of the rotating sleeve above the lower spiral groove.

[0011] The beneficial effects of this utility model are: by introducing high-pressure gas into the upper spiral groove on the inner circumferential surface of the upper flange and the lower spiral groove on the inner circumferential surface of the lower flange, a spiral gas sealing structure is formed. Combined with conventional oil seals, this effectively prevents fine dust in the material from entering the device and improves the sealing effect of the transmission mechanism of the arch-breaking device. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0015] Figure 3 yes Figure 2 A magnified structural diagram of point A in the middle.

[0016] In the diagram: 1. Housing, 2. Upper flange, 3. Lower flange, 4. Slewing sleeve, 5. Scraper, 6. Inner slewing support, 7. Outer slewing support, 8. Slewing flange, 9. Upper flange, 10. Lower flange, 11. Upper spiral groove, 12. First air inlet, 13. Lower spiral groove, 14. Second air inlet, 15. Transmission housing, 16. Gear motor, 17. Drive gear, 18. Driven gear, 19. External gear ring, 20. Arc plate, 21. Oil seal. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0018] like Figures 1-3 The device shown is a bulge-breaking device for bulk material silos, which has a housing 1 and a transmission box 15 fixed as an integral structure.

[0019] An upper flange 2 is fixed to the upper end face of the housing 1, and an upper flange 9 is fixed to the upper end face of the upper flange 2. A lower flange 3 is fixed to the lower end face of the housing 1, and a lower flange 10 is fixed to the lower end face of the lower flange 3. A rotating sleeve 4 is provided inside the housing 1. The upper end of the outer circumferential surface of the rotating sleeve 4 is in clearance fit with the inner circumferential surface of the upper flange 9, and the lower end of the outer circumferential surface of the rotating sleeve 4 is in clearance fit with the inner circumferential surface of the lower flange 10.

[0020] An arc-shaped plate 20 is fixed on the inner peripheral wall of the rotary sleeve 4. A scraper 5 that can extend into the material hopper discharge port is fixed on the arc-shaped plate 20. The upper end of the scraper 5 is an inclined plate that fits against the inner side of the conical discharge port of the material hopper, and the lower end of the scraper 5 is a straight plate that penetrates the rotary sleeve 4 downward.

[0021] The slewing sleeve 4 is provided with an inner slewing support 6 on its outer periphery. A slewing flange 8 is fixed on the outer peripheral wall of the slewing sleeve 4 above the inner slewing support 6. An outer slewing support 7 is provided on the outer periphery of the inner slewing support 6. The inner ring of the outer slewing support 7 is rotatably engaged with the inner slewing support 6 through a bearing. The inner slewing support 6 is fixed to the lower flange 3. The upper end face of the outer slewing support 7 is fixed to the slewing sleeve 4 through the slewing flange 8. Oil seals 21 are respectively provided between the upper flange 2 and the outer peripheral surface of the slewing sleeve 4 below the upper spiral groove 11, and between the lower flange 10 and the outer peripheral surface of the slewing sleeve 4 above the lower spiral groove 13.

[0022] The upper flange 9 has an upper spiral groove 11 on its inner circumferential surface and a first air inlet 12 for high-pressure gas to be introduced into the upper spiral groove 11 radially. The lower flange 10 has a lower spiral groove 13 on its inner circumferential surface and a second air inlet 14 for high-pressure gas to be introduced into the lower spiral groove 13 radially.

[0023] The transmission housing 15 is equipped with a gear mechanism that drives the rotary outer support 7 to rotate. The gear mechanism includes a reduction motor 16 mounted on the upper end face of the transmission housing 15. A driving gear 17 and a driven gear 18 are rotatably mounted in the transmission housing 15. The driving gear 17 is connected to the output shaft of the reduction motor 16. The driving gear 17 and the driven gear 18 mesh and drive each other. The outer circumference of the rotary outer support 7 is provided with an external gear ring 19 that meshes and drives the driven gear 18.

[0024] When the material is discharged from the hopper, the reduction motor 16 is started. The driven gear 18 of the gear mechanism meshes with the external gear ring 19, which drives the rotating outer support 7 to rotate. This causes the rotating sleeve 4 to rotate and simultaneously drives the scraper 5 to rotate. When the scraper 5 rotates against the inner side of the conical discharge port of the hopper, it can effectively eliminate bridging and blockage at the discharge port of the hopper, ensuring smooth material discharge.

[0025] This invention introduces high-pressure gas through the upward spiral groove 11 and the downward spiral groove 13 to form a pneumatic sealing structure. Combined with the conventional oil seal 21, it effectively prevents fine dust in the material from entering the gear mechanism and improves the sealing effect of the transmission box 15.

[0026] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A device for breaking up arches in a bulk material silo, comprising a housing (1), an upper flange (2) fixed to the upper end face of the housing (1), and a lower flange (3) fixed to the lower end face of the housing (1), characterized in that: The housing (1) is rotatably provided with a rotating sleeve (4). The inner wall of the rotating sleeve (4) is fixed with a scraper (5) that can extend into the material discharge port of the hopper. The outer periphery of the rotating sleeve (4) is provided with a rotating inner support (6) fixed to the lower flange (3). The outer periphery of the rotating inner support (6) is provided with a rotating outer support (7). The upper end face of the rotating outer support (7) is fixed to the rotating sleeve (4) through the rotating flange (8). The upper end face of the upper flange (2) is fixed with an upper flange plate (9), and the lower end face of the lower flange (3) is fixed with a lower flange plate (10). The inner circumferential surface of the disc (9) is clearance-fitted with the upper end of the outer circumferential surface of the rotating sleeve (4), and the inner circumferential surface of the lower flange (10) is clearance-fitted with the lower end of the outer circumferential surface of the rotating sleeve (4). An upper spiral groove (11) is provided on the inner circumferential surface of the upper flange (9), and a first air inlet (12) for high-pressure gas to be introduced into the upper spiral groove (11) is provided radially on the upper flange (9). A lower spiral groove (13) is provided on the inner circumferential surface of the lower flange (10), and a second air inlet (14) for high-pressure gas to be introduced into the lower spiral groove (13) is provided radially on the lower flange (10).

2. The anti-bridging device for bulk material silos as described in claim 1, characterized in that: The housing (1) is provided with a gear mechanism that drives the rotating outer support (7) to rotate. The gear mechanism includes a transmission housing (15). A geared motor (16) is installed on the upper end face of the transmission housing (15). A drive gear (17) and a driven gear (18) are rotatably installed inside the transmission housing (15). The drive gear (17) is connected to the output shaft of the geared motor (16) for transmission. The drive gear (17) and the driven gear (18) mesh for transmission. The outer circumference of the rotating outer support (7) is provided with an outer gear ring (19) that meshes with the driven gear (18).

3. The anti-bridging device for bulk material silos as described in claim 1, characterized in that: An arc-shaped plate (20) is fixed on the inner circumferential wall of the rotating sleeve (4), and the scraper (5) is fixed on the arc-shaped plate (20).

4. The bridging device for bulk material silos as described in claim 3, characterized in that: The upper end of the scraper (5) is an inclined plate that fits against the inner side of the cone-shaped discharge port of the hopper, and the lower end of the scraper (5) is a straight plate that passes through the rotating sleeve (4) downward.

5. The anti-bridging device for bulk material silos as described in claim 1, characterized in that: Oil seals (21) are provided between the outer circumference of the upper flange (2) and the outer circumference of the rotating sleeve (4) below the upper spiral groove (11), and between the lower flange (10) and the outer circumference of the rotating sleeve (4) above the lower spiral groove (13).

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