CN109458835B

CN109458835B - Sand drying system

Info

Publication number: CN109458835B
Application number: CN201811200837.5A
Authority: CN
Inventors: 黄秀媚
Original assignee: Nanjing Lishui Hi Tech Venture Capital Management Co Ltd
Current assignee: Dehumidification Equipment Co ltd
Priority date: 2018-10-16
Filing date: 2018-10-16
Publication date: 2020-06-05
Anticipated expiration: 2038-10-16
Also published as: CN109458835A

Abstract

The invention provides a belt conveyor and a sand drying system with the belt conveyor, wherein the belt conveyor comprises a conveying frame, a driving belt pulley, a driven belt pulley, a conveying belt sleeved on the driving belt pulley and the driven belt pulley, a plurality of roller barrel frames sequentially arranged on the conveying frame, a first supporting roller, a second supporting roller and a third supporting roller which are arranged on the roller barrel frames, an upper tensioning roller and a lower tensioning roller which are arranged on the conveying frame, and a collecting pipeline which is arranged on the conveying frame and is positioned below the driving belt pulley; the second supporting roller is horizontal, the first supporting roller is positioned at one end of the second supporting roller and is inclined upwards, and the third supporting roller is positioned at the other end of the second supporting roller and is inclined upwards; the first supporting roller, the second supporting roller and the third supporting roller upwards support the upper half part of the conveyor belt to form a V shape; the upper tensioning roller upwardly tensions the lower half of the conveyor belt and the lower tensioning roller downwardly tensions the lower half of the conveyor belt.

Description

Sand drying system

Technical Field

The invention relates to the technical field of sand drying, in particular to a belt conveyor and a sand drying system with the belt conveyor.

Background

A sand drying system is a drying system that handles large quantities of material. Before sand is sent into the rotary kiln for drying, a belt conveyor is needed to send the sand for one section. However, sand is different from other articles, and is not suitable for being accumulated on a conveyor belt of a belt conveyor because of small particles, otherwise, the sand is easy to slip off. Therefore, the amount of sand to be fed using the conventional belt conveyor is very limited.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides a belt conveyor and a sand drying system with the belt conveyor, which can bear more sand during sand feeding.

In order to achieve the purpose, the invention provides the following technical scheme:

a belt conveyor comprises a conveying frame, a driving belt pulley and a driven belt pulley which are respectively arranged at two ends of the conveying frame, a conveying belt sleeved on the driving belt pulley and the driven belt pulley, a plurality of roller barrel frames which are sequentially arranged on the conveying frame, a first supporting roller, a second supporting roller and a third supporting roller which are arranged on the roller barrel frames, an upper tensioning roller and a lower tensioning roller which are arranged on the conveying frame, and a material collecting pipeline which is arranged on the conveying frame and is positioned below the driving belt pulley;

the second supporting roller is horizontal, the first supporting roller is positioned at one end of the second supporting roller and is inclined upwards, and the third supporting roller is positioned at the other end of the second supporting roller and is inclined upwards; the first supporting roller, the second supporting roller and the third supporting roller upwards support the upper half part of the conveyor belt to form a V shape; the upper tensioning roller upwards tensions the lower half portion of the conveyor belt, and the lower tensioning roller downwards tensions the lower half portion of the conveyor belt.

As an embodiment, the conveying frame includes a first frame and a second frame connected to each other;

the driving belt pulley, the upper tensioning roller and the material collecting pipeline are arranged on the first frame; the driven pulley, the roller frame and the lower tensioning roller are arranged on the second frame.

Correspondingly, the invention provides the following technical scheme:

a sand drying system comprising a belt conveyor and a hopper as described above; the hopper comprises a hopper main body, a supporting frame and a supporting pad; the hopper main body comprises a large feeding port, a small feeding port and a linear feeding port; the feed opening is positioned above the conveyor belt; the supporting frame is used for providing the hopper main body support; the supporting pad is arranged at the bottom of the supporting frame.

As an implementation mode, the device also comprises a lifting layer, an air inlet hood, a rotary kiln, an air outlet hood, a first damping door, a second damping door, a vibrating screen, a first chain bucket elevator and a second chain bucket elevator;

the air inlet hood, the rotary kiln and the air outlet hood are sequentially connected and arranged above the high-rise frame; the hopper, the belt conveyor and the vibrating screen are arranged below the elevated layer; the first chain bucket elevator and the second chain bucket elevator are arranged on one side of the overhead layer; the first chain bucket elevator is connected with the belt conveyor and the air inlet hood and is connected with the air inlet hood after passing through the first damping door and the second damping door in sequence; the vibrating screen is connected below the air outlet cover, and the second chain bucket elevator is connected with the vibrating screen and the storage tank.

As an embodiment, the first damper door includes a first outer cover, a first inner tray, a first movable door panel, a first movable handle, a first front access door, and a first rear access door;

the first outer cover comprises a first upper opening and a first lower opening which are through up and down, a first front opening and a first rear opening which are through front and rear, and a first mounting seat which is opposite to left and right; the first inner tray is embedded into the first upper opening; the first movable door plate is arranged on the first mounting seat through the first movable handle, the first movable door plate covers the lower end of the first inner tray in a natural state, and the first movable door plate is turned over up and down relative to the first movable handle in a stressed state and is also turned over back and forth along with the first movable handle; first front side access door is located on the first front opening, first rear side access door is located on the first rear opening.

As an embodiment, the lower end of the first inner tray is a bevel, and the first movable door panel is inclined in a natural state.

As an embodiment, the second damper door includes a second outer cover, a second inner tray, a second movable door panel, a second movable handle, a second front access door, and a second rear access door;

the second outer cover comprises a second upper opening and a second lower opening which are through up and down, a second front opening and a second rear opening which are through front and rear, and a second mounting seat which is opposite to left and right; the second inner tray is embedded into the second upper opening; the second movable door plate is arranged on the second mounting seat through the second movable handle, the second movable door plate covers the lower end of the second inner tray in a natural state, and the second movable door plate is turned over relative to the second movable handle in a stressed state and is also turned over back and forth along with the second movable handle; the second front access door is arranged on the second front opening, and the second rear access door is arranged on the second rear opening.

In an embodiment, the lower end of the second inner tray is a bevel, and the second movable door panel is inclined in a natural state.

As an implementation mode, the device further comprises an atomization pipeline arranged between the first damping door and the second damping door and an atomization nozzle arranged on the periphery of the atomization pipeline.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a belt conveyor and a sand drying system with the belt conveyor, wherein a first supporting roller, a second supporting roller and a third supporting roller which are sequentially arranged form a shape close to a V shape, so that the upper half part of a conveyor belt supported by the first supporting roller, the second supporting roller and the third supporting roller also forms the V shape. More sand can be tolerated during transport than in conventional belt conveyors. Accordingly, upper and lower tension rollers are also used to keep the belt taut, providing sufficient power for the upper half of the belt. During operation, sand falls on the conveying belt, is conveyed under the driving of the driving belt pulley, and is finally conveyed into the material collecting pipeline.

Drawings

Fig. 1 is an exploded view of a sand drying system provided by an embodiment of the present invention;

FIG. 2 is an exploded view of a first damper door provided in accordance with an embodiment of the present invention;

FIG. 3 is an exploded view of a second damper door provided in accordance with an embodiment of the present invention;

FIG. 4 is a perspective view of an atomization conduit provided in accordance with an embodiment of the present invention;

FIG. 5 is a perspective view of a hopper provided in accordance with an embodiment of the present invention;

fig. 6 is a perspective view of a belt conveyor according to an embodiment of the present invention.

In the figure: 1. erecting a layer; 2. an air intake hood; 3. a rotary kiln; 4. an air outlet cover; 5. a first damper door; 5a, a first housing; 5aa, a first upper opening; 5ab, first lower opening; 5ac, a first front opening; 5ad, a first rear opening; 5ae, a first mounting seat; 5b, a first inner tray; 5c, a first movable door plate; 5d, a first movable handle; 5e, a first front access door; 5f, a first rear access door; 6. a second damper door; 6a, a second outer cover; 6aa, a second upper opening; 6ab, second lower opening; 6ac, a second front opening; 6ad, a second rear opening; 6ae and a second mounting seat; 6b, a second inner tray; 6c, a second movable door plate; 6d, a second movable handle; 6e, a second front access door; 6f, a second rear access door; 7. a hopper; 7a, a hopper body; 7aa, a feeding port; 7ab, feed opening; 7b, a support frame; 7c, a support pad; 8. a belt conveyor; 8a, a transport frame; 8aa, a first frame; 8ab, a second frame; 8b, a driving belt pulley; 8c, a driven belt pulley; 8d, a conveyor belt; 8e, a roller frame; 8f, a first support roller; 8g of second supporting roller; 8h, a third supporting roller; 8i, an upper tensioning roller; 8j, a lower tensioning roller; 8k, a material collecting pipeline; 9. vibrating screen; 10. a first bucket elevator; 11. a second bucket elevator; 12. an atomization conduit; 13. an atomizing nozzle.

Detailed Description

The above and further features and advantages of the present invention will be apparent from the following, complete description of the invention, taken in conjunction with the accompanying drawings, wherein the described embodiments are merely some, but not all embodiments of the invention.

In one embodiment, as shown in FIG. 1. The sand drying system provided by the embodiment comprises a high-rise frame 1, an air inlet hood 2 arranged above the high-rise frame 1, a rotary kiln 3, an air outlet hood 4, a first damping door 5, a second damping door 6, a hopper 7 arranged below the high-rise frame 1, a belt conveyor 8, a vibrating screen 9, a first chain bucket elevator 10 and a second chain bucket elevator 11 arranged on one side of the high-rise frame 1; the air inlet hood 2, the rotary kiln 3 and the air outlet hood 4 are connected in sequence; the belt conveyor 8 is arranged below the hopper 7, and the first chain bucket elevator 10 is connected with the belt conveyor 8 and the air inlet hood 2, and is connected with the air inlet hood 2 after passing through the first damping door 5 and the second damping door 6 in sequence; the vibrating screen 9 is arranged below the air outlet cover 4 and is connected with the air outlet cover through a gravity air brake; a second bucket elevator 11 connects the vibrating screen 9 and a storage tank (not shown).

In this embodiment, sand is contained in the hopper 7 and naturally falls onto the belt conveyor 8. Then under the action of the belt conveyor 8 and the first bucket elevator 10, sand is conveyed to the air inlet hood 2, then falls into the vibrating screen 9 after sequentially passing through the rotary kiln 3 and the air outlet hood 4, and is screened, so that finished sand is obtained. And finally, collecting the finished sand into a storage tank under the action of a second chain bucket elevator 11. In the process, the sand is continuously raised after entering the rotary kiln 3, and the air inlet hood 2 conveys hot air to the rotary kiln 3 to dry the sand. It should be noted that the sand drying system provided in this embodiment uses the elevated layer 1 as a boundary, and each main device, namely, the air inlet hood 2, the rotary kiln 3, and the air outlet hood 4, is arranged above the elevated layer 1. Auxiliary equipment, namely a hopper 7, a belt conveyor 8 and a vibrating screen 9, is arranged below the elevated layer 1. The first bucket elevator 10 and the second bucket elevator 11 are used as up-and-down carrying equipment, and operation is performed after the skip-layer layout is adopted. Compared with the traditional flat-layer layout, the skip-layer layout has smaller occupied area, and the elevated layer 1 serves as a partition plate to separate part of working noise above the elevated layer 1, so that a quieter working environment is provided for a ground area. And, after the first damper door 5 and the second damper door 6 are used, it is possible to prevent dust from being raised upward.

In one embodiment, as shown in FIG. 2. The first damping door 5 provided by the present embodiment includes a first outer cover 5a, a first inner tray 5b, a first movable door panel 5c, a first movable handle 5d, a first front access door 5e, and a first rear access door 5 f; the first housing 5a includes first upper and lower openings 5aa and 5ab that are through from above and below, first front and rear openings 5ac and 5ad that are through from front to rear, and first mount seats 5ae that are opposite from left to right; the first inner tray 5b is fitted into the first upper opening 5 aa; the first movable door panel 5c is installed on the first installation seat 5ae through a first movable handle 5d, the first movable door panel 5c covers the lower end of the first inner tray 5b in a natural state, and the first movable door panel 5c turns up and down relative to the first movable handle 5d in a stressed state and also turns back and forth along with the first movable handle 5 d; the first front access door 5e is provided on the first front opening 5ac, and the first rear access door 5f is provided on the first rear opening 5 ad.

In the present embodiment, the first damper door 5 has two movable points, the first being at the junction of the first movable door panel 5c and the first movable handle 5d, and the second being at the junction of the first movable handle 5d and the first mounting seat 5 ae. In operation, the first movable door panel 5c is covered on the lower end of the first inner tray 5b under the action of the externally-arranged torsion spring in a non-sand feeding state (natural state). The first movable door panel 5c is turned up and down relative to the first movable handle 5d in a sand inlet state (stressed state), and is also turned back and forth along with the first movable handle 5 d. Specifically, when the amount of sand is small, the first movable door panel 5c mainly turns downwards relative to the first movable handle 5d, the first movable door panel 5c only slightly turns backwards along with the first movable handle 5d, and at the moment, the opening between the first inner tray 5b and the first movable door panel 5c is small, so that the sand entering the first outer cover 5a can be prevented from upwards flying ash. When the amount of sand is large, the first movable door panel 5c turns downwards relative to the first movable handle 5d, the first movable door panel 5c turns backwards along with the first movable handle 5d, and at the moment, the opening between the first inner tray 5b and the first movable door panel 5c is large.

In one embodiment, as shown in FIG. 3. The second damper door 6 provided in this embodiment includes a second outer cover 6a, a second inner tray 6b, a second movable door panel 6c, a second movable handle 6d, a second front access door 6e, and a second rear access door 6 f; the second housing 6a comprises a second upper opening 6aa and a second lower opening 6ab which are through from top to bottom, a second front opening 6ac and a second rear opening 6ad which are through from front to back, and a second mounting seat 6ae which is opposite from left to right; the second inner tray 6b is fitted into the second upper opening 6 aa; the second movable door panel 6c is installed on the second installation seat 6ae through a second movable handle 6d, the second movable door panel 6c covers the lower end of the second inner tray 6b in a natural state, and the second movable door panel 6c turns over up and down relative to the second movable handle 6d in a stressed state and also turns over back and forth along with the second movable handle 6 d; the second front access door 6e is provided on the second front opening 6ac, and the second rear access door 6f is provided on the second rear opening 6 ad.

In the present embodiment, the second damper door 6 has two movable points, the second being at the junction of the second movable door panel 6c and the second movable handle 6d, and the second being at the junction of the second movable handle 6d and the second mounting seat 6 ae. In operation, the second movable door panel 6c is covered on the lower end of the second inner tray 6b under the action of the externally-arranged torsion spring in a non-sand feeding state (natural state). The second movable door panel 6c turns up and down relative to the second movable handle 6d in the sand inlet state (stressed state), and also turns back and forth along with the second movable handle 6 d. Specifically, when the amount of sand is small, the second movable door panel 6c mainly turns downwards relative to the second movable handle 6d, the second movable door panel 6c only slightly turns backwards along with the second movable handle 6d, and at the moment, the opening between the second inner tray 6b and the second movable door panel 6c is small, so that the sand entering the second outer cover 6a can be prevented from upwards flying ash. When the amount of sand is large, the second movable door panel 6c turns downwards relative to the second movable handle 6d, the second movable door panel 6c turns backwards along with the second movable handle 6d, and at the moment, the opening between the second inner tray 6b and the second movable door panel 6c is large.

In one embodiment, as shown in FIG. 4. The sand drying system provided by the embodiment further includes an atomizing pipe 12 disposed between the first damper door 5 and the second damper door 6, and an atomizing nozzle 13 disposed at a periphery of the atomizing pipe 12. In the present embodiment, the conventional sand drying process is changed by the atomization duct 12 disposed between the first damper door 5 and the second damper door 6. Namely, an atomization pipeline 12 is added for humidification on the basis of the original feeding of the gas inlet hood 2, the material returning of the rotary kiln 3 and the material discharging of the gas outlet hood 4, and the feeding, the material returning and the material discharging are arranged in front of the working procedure. Which helps the sand loosened after passing through the belt conveyor 8, the first bucket elevator 10, and the first damper door 5 to re-adhere together into the rotary kiln 3 under the action of the air inlet hood 2. Thereby avoiding that partly dry sand remains inside the inlet hood 2.

In one embodiment, as shown in FIG. 5. The hopper 7 provided by the present embodiment includes a hopper main body 7a, a support frame 7b, and a support pad 7 c; the hopper main body 7a comprises a large feeding port 7aa and a small feeding port 7aa and a linear discharging port 7 ab; the supporting frame 7b is used for providing support for the hopper body 7 a; the supporting pad 7c is arranged at the bottom of the supporting frame 7 b. In this embodiment, the discharge opening 7ab of the hopper body 7a is provided in a straight line, which is advantageous for dropping the sand in the hopper body 7a onto the belt conveyor 8.

In one embodiment, as shown in FIG. 6. The belt conveyor 8 according to the present embodiment includes a conveying frame 8a, a driving pulley 8b and a driven pulley 8c respectively provided at both ends of the conveying frame 8a, a conveyor belt 8d fitted over the driving pulley 8b and the driven pulley 8c, a plurality of roller frames 8e sequentially arranged on the conveying frame 8a, a first supporting roller 8f, a second supporting roller 8g, and a third supporting roller 8h provided on the roller frames 8e, an upper tension roller 8i and a lower tension roller 8j provided on the conveying frame 8a, and a collecting duct 8k provided on the conveying frame 8a and located below the driving pulley 8 b; the second support roller 8g is horizontal, the first support roller 8f is located at one end of the second support roller 8g and is inclined upward, and the third support roller 8h is located at the other end of the second support roller 8g and is inclined upward; the first support roller 8f, the second support roller 8g, and the third support roller 8h upwardly support the upper half of the conveyor belt 8d so as to form a V-shape; the upper tension roller 8i upwardly tensions the lower half of the belt 8d, and the lower tension roller 8j downwardly tensions the lower half of the belt 8 d.

In this embodiment, the belt conveyor 8 can be conveyed while being subjected to a considerable load. Since the first support roller 8f, the second support roller 8g, and the third support roller 8h, which are arranged in this order, are formed in a nearly V-shape, the upper half of the belt 8d supported by the rollers is also formed in a V-shape. More sand can be tolerated during transport than in conventional belt conveyors. Accordingly, the upper and

lower tension rollers

8i and 8j are also used to keep the belt taut, providing sufficient power to the upper half of the belt 8 d. During operation, sand falls on the conveyor belt 8d and is conveyed under the driving of the driving belt pulley 8b, and finally, the sand is conveyed into the collecting pipeline 8 k.

In one embodiment, as shown in FIG. 6. The present embodiment provides a conveyance frame 8a including a first frame 8aa and a second frame 8ab connected to each other; the driving belt pulley 8b, the upper tensioning roller 8i and the material collecting pipeline 8k are arranged on the first frame 8 aa; the driven pulley 8c, the roller frame 8e, and the lower tension roller 8j are provided on the second frame 8 ab.

The above-mentioned embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, and it should be understood that the above-mentioned embodiments are only examples of the present invention and are not intended to limit the scope of the present invention. It should be understood that any modifications, equivalents, improvements and the like, which come within the spirit and principle of the invention, may occur to those skilled in the art and are intended to be included within the scope of the invention.

Claims

1. A sand drying system, characterized by comprising a belt conveyor and a hopper (7);

the belt conveyor comprises a conveying frame (8a), a driving belt pulley (8b) and a driven belt pulley (8c) which are respectively arranged at two ends of the conveying frame (8a), a conveying belt (8d) sleeved on the driving belt pulley (8b) and the driven belt pulley (8c), a plurality of roller barrel frames (8e) which are sequentially arranged on the conveying frame (8a), a first supporting roller (8f), a second supporting roller (8g) and a third supporting roller (8h) which are arranged on the roller barrel frames (8e), an upper tensioning roller (8i) and a lower tensioning roller (8j) which are arranged on the conveying frame (8a), and a material collecting pipeline (8k) which is arranged on the conveying frame (8a) and is positioned below the driving belt pulley (8 b); the second support roller (8g) is horizontal, the first support roller (8f) is located at one end of the second support roller (8g) and is inclined upward, and the third support roller (8h) is located at the other end of the second support roller (8g) and is inclined upward; the first support roller (8f), the second support roller (8g), and the third support roller (8h) upwardly support the upper half of the conveyor belt (8d) to form a V-shape; the upper tensioning roller (8i) tensioning the lower half of the conveyor belt (8d) upwards and the lower tensioning roller (8j) tensioning the lower half of the conveyor belt (8d) downwards;

the hopper (7) comprises a hopper main body (7a), a supporting frame (7b) and a supporting pad (7 c); the hopper main body (7a) comprises a large feeding opening (7aa) and a small feeding opening (7ab) which are in a linear shape; the feed opening (7ab) is positioned above the conveyor belt (8 d); the supporting frame (7b) is used for providing the hopper main body (7a) for supporting; the supporting pad (7c) is arranged at the bottom of the supporting frame (7 b);

the rotary kiln comprises a rotary kiln body, and is characterized by further comprising a high frame (1), an air inlet cover (2), a rotary kiln (3), an air outlet cover (4), a first damping door (5), a second damping door (6), a vibrating screen (9), a first chain bucket elevator (10) and a second chain bucket elevator (11); the air inlet hood (2), the rotary kiln (3) and the air outlet hood (4) are sequentially connected and arranged above the high frame (1); the hopper (7), the belt conveyor (8) and the vibrating screen (9) are arranged below the overhead layer (1); the first chain bucket elevator (10) and the second chain bucket elevator (11) are arranged on one side of the overhead layer (1); the first bucket elevator (10) is connected with the belt conveyor (8) and the air inlet hood (2), and is connected with the air inlet hood (2) after passing through the first damping door (5) and the second damping door (6) in sequence; the vibrating screen (9) is connected below the air outlet cover (4), and the second bucket elevator (11) is connected with the vibrating screen (9) and the storage tank; the first damping door (5) comprises a first outer cover (5a), a first inner tray (5b), a first movable door panel (5c), a first movable handle (5d), a first front side access door (5e) and a first rear side access door (5 f); the first outer cover (5a) comprises a first upper opening (5aa) and a first lower opening (5ab) which are through up and down, a first front opening (5ac) and a first rear opening (5ad) which are through front and rear, and a first mounting seat (5ae) which is opposite to left and right; the first inner tray (5b) is inserted into the first upper opening (5 aa); the first movable door panel (5c) is installed on the first installation seat (5ae) through the first movable handle (5d), the first movable door panel (5c) covers the lower end of the first inner tray (5b) in a natural state, and the first movable door panel (5c) is turned up and down relative to the first movable handle (5d) in a stressed state and is also turned back and forth along with the first movable handle (5 d); the first front access door (5e) is provided on the first front opening (5ac), and the first rear access door (5f) is provided on the first rear opening (5 ad).

2. Sand drying system according to claim 1, characterised in that the lower end of the first inner tray (5b) is bevelled, the first flap (5c) being bevelled in the natural state.

3. Sand drying system according to claim 1, characterised in that the second damping door (6) comprises a second outer cover (6a), a second inner tray (6b), a second movable door panel (6c), a second movable handle (6d), a second front access door (6e) and a second rear access door (6 f);

the second outer cover (6a) comprises a second upper opening (6aa) and a second lower opening (6ab) which are through up and down, a second front opening (6ac) and a second rear opening (6ad) which are through front and back, and a second mounting seat (6ae) which is opposite to left and right; the second inner tray (6b) is embedded in the second upper opening (6 aa); the second movable door panel (6c) is installed on the second installation seat (6ae) through the second movable handle (6d), the second movable door panel (6c) covers the lower end of the second inner tray (6b) in a natural state, and the second movable door panel (6c) is turned up and down relative to the second movable handle (6d) in a stressed state and is also turned back and forth along with the second movable handle (6 d); the second front access door (6e) is provided on the second front opening (6ac), and the second rear access door (6f) is provided on the second rear opening (6 ad).

4. The sand drying system according to claim 3, wherein the lower end of the second inner tray (6b) is a bevel, and the second movable door panel (6c) is tilted in a natural state.

5. Sand drying system according to claim 1, further comprising an atomizing duct (12) arranged between the first damper door (5) and the second damper door (6) and atomizing nozzles (13) arranged at the periphery of the atomizing duct (12).