Bidirectional operation closed belt conveyor

Abstract

The utility model discloses a bi-directional operation closed belt conveyor, which comprises a closed shell, a first roller and a second roller, the two rollers are respectively positioned in two ends of the closed shell and are sleeved and connected through an annular conveying belt, and a front driving device and a rear driving device are respectively in transmission connection with the corresponding rollers through clutches. The two driving devices work independently and alternately, and bidirectional movement of the annular conveying belt in the first direction or the second direction is achieved. The design is particularly suitable for being installed below a granary and provided with a plurality of feeding ports, so that simultaneous grain discharging operation of a plurality of granaries is achieved, the conveyor can intelligently select the conveying direction according to the distance between the granary and a discharging point, the grain discharging path is effectively shortened, the grain discharging time is effectively shortened, the grain discharging efficiency is improved, and logistics operation is optimized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to grain material conveying equipment technical field, concretely relates to a closed belt conveyor of two -way operation. BACKGROUND

[0002] The closed belt conveyor is the transportation equipment that the bulk material is transported according to predetermined target by the aid of the conveying belt moving in the closed housing, and it has the advantages of low cost, mature technology, strong sealing, less dust pollution, simple operation and the like, so the closed belt conveyor is widely used in the process of grain transfer, loading, warehousing and the like.

[0003] At present, the grain depot is usually composed of multiple granaries, and the granaries are usually arranged in one or multiple rows. When the granary discharges grain, a mobile belt conveyor is usually used, that is, the belt conveyor is pushed to the discharge port of a granary, and when the granary finishes discharging grain, the belt conveyor is pushed to the discharge port of another granary that needs to discharge grain. However, the existing mobile belt conveyor is mostly of open structure, and the design does not consider the uniformity and compactness of material flow, and it is easy to cause material flying and pollute the working environment. The mobile belt conveyor has high labor intensity and complicated operation. In addition, the conveying equipment of the prior art usually only supports single-direction material conveying, and the design of the feeding port cannot be flexibly connected with the discharge port of the conveyor. This limitation requires the discharge operation of multiple granaries to be performed one by one, which seriously affects the overall discharging efficiency. The fixed conveying path cannot be automatically adjusted according to the distance between the granary and the discharge port of the conveyor, resulting in an increase in the additional conveying distance and time and labor consumption. SUMMARY

[0004] In summary, in order to overcome the problems of the prior art, the utility model provides a closed belt conveyor of two-way operation, which utilizes multiple feeding ports to simultaneously discharge multiple granaries, and two-way operation can realize two-way conveying of material. When the granary discharges grain, the conveying direction can be selected according to the distance between the granary and the discharge port of the conveyor, so as to reduce the conveying distance and save the discharging time.

[0005] To solve the above technical problems, the technical scheme provided by the utility model is implemented as follows:

[0006] The application discloses a closed belt conveyor capable of running in two directions, which comprises a closed shell, a first roller and a second roller located in the closed shell, and an annular conveying belt, wherein the first roller and the second roller are respectively installed in shaft seats at two ends of the closed shell through bearings, and the first roller and the second roller are sleeved with the annular conveying belt outside; first driving devices and second driving devices are arranged outside the two ends of the closed shell, the first driving devices are in transmission connection with the first roller through first clutches, the second driving devices are in transmission connection with the second roller through second clutches, the first driving devices drive the first roller to rotate and drive the annular conveying belt to move in a first direction, and the second driving devices drive the second roller to rotate and drive the annular conveying belt to move in a second direction; and the first driving devices and the second driving devices work alternately.

[0007] Preferably, a plurality of feeding ports are arranged on the upper end of the closed shell and along the length direction of the closed shell, and a feeding hopper is connected to the feeding ports.

[0008] Preferably, the feeding hopper comprises a body and a pair of guide plates located in the body, the pair of guide plates are oppositely arranged along the length direction of the closed shell, the upper end of the guide plate is hingedly connected to the closed shell, an adjusting member is arranged on the body, the adjusting member is connected to the body and penetrates into the body at one end and is located outside the body at the other end, the end located in the body abuts against the guide plate, and the end located outside the body is an operating end.

[0009] Preferably, a wear-resistant pad is arranged on the inner side of the guide plate.

[0010] Preferably, the application further comprises a tensioning device for tensioning the annular conveying belt, wherein the tensioning device is a gravity tensioning device and is connected to the lower conveying belt of the annular conveying belt.

[0011] Preferably, at least one group of carrier rollers are arranged in the closed shell along the length direction of the closed shell, and each group of carrier rollers is used for supporting the upper conveying belt of the annular conveying belt.

[0012] Preferably, the carrier roller is a three-carrier-roller structure composed of two symmetrical inclined rollers and a middle horizontal roller, or the carrier roller is a single-carrier-roller structure composed of two tapered rollers at two ends and a straight roller in the middle.

[0013] Preferably, an upper wear-resistant plate and a partition plate are arranged in the closed shell, the upper wear-resistant plate and the partition plate are connected to the closed shell at two sides, the upper wear-resistant plate, the partition plate and the closed shell form an upper air chamber, an upper air hole is arranged on the upper wear-resistant plate, the upper conveying belt of the annular conveying belt is arranged above the upper wear-resistant plate, the upper air hole corresponds to the bottom surface of the upper conveying belt of the annular conveying belt, and an upper air inlet is arranged on the closed shell and communicates with the inner cavity of the upper air chamber.

[0014] Preferably, the inner bottom plate of the closed shell is provided with a lower air chamber arranged along the length direction thereof, the upper end opening of the lower air chamber is provided with a lower wear plate, the lower wear plate is provided with a lower air hole corresponding to the lower layer conveying belt bottom surface of the annular conveying belt, and the closed shell is externally provided with a lower air inlet communicated with the lower air chamber.

[0015] Preferably, the closed shell is externally provided with an air inlet device connected with the upper air inlet and the lower air inlet, and the air inlet device conveys airflow into the upper air chamber and the lower air chamber.

[0016] Preferably, the closed shell is externally provided with an air inlet device connected with the upper air inlet and the lower air inlet, and the air inlet device conveys airflow into the upper air chamber and the lower air chamber.

[0017] The utility model discloses the beneficial effect that:

[0018] 1, the utility model discloses install below the granary, simultaneously set up multiple feeders, and multiple feeders can respectively correspond to the discharge port of multiple granary, can realize the simultaneous discharge operation of multiple granary, in addition, bidirectional operation can realize the bidirectional conveying of material, and when the granary discharges, can select the conveying direction according to the distance between the granary and the discharge port of conveyer, thereby reducing the conveying distance, and saving the discharge time.

[0019] 2, the utility model discloses the closed belt conveyor has two sets of driving devices, and the two sets of driving devices are connected with the two roller drums of belt conveyor through the clutch respectively, when the utility model discloses the closed belt conveyor transports material along the first direction, and the first driving device drives the first roller drum to rotate through the clutch, and the second driving device does not start, and the second roller drum is used as the driven roller, and the same reason, when the utility model discloses the closed belt conveyor transports material along the second direction, and the second roller drum is driven to rotate under the action of the clutch, and the first roller drum is used as the driven roller, and the switching of conveying direction is realized through the two sets of driving devices and the clutch.

[0020] 3, the utility model discloses that the two oppositely arranged guide plates are arranged in the feeder, and the two guide plates guide the incoming material to enter the middle part of the upper layer conveying belt, and the two guide plates can form a funnel-shaped discharge channel through the adjusting piece, can extrude the material from both sides to the middle part, make the material flow dense, reduce the dust. In addition, the feeder of general conveyer is usually arranged obliquely along the conveying direction, and the upper end opening and the lower end opening of the funnel-shaped discharge channel of the utility model are coaxially arranged, facilitating the bidirectional conveying of material.

[0021] 4, The utility model discloses the inner bottom plate of closed casing sets down the air chamber, and the air current is transported to the air chamber inside to the air inlet device, and the air current blows the lower layer conveyor belt of annular conveyor belt through the lower air hole, forms the air cushion between the lower layer conveyor belt and the inner bottom plate of closed casing, thereby reduces the friction of lower layer conveyor belt and inner bottom plate, guarantees the service life of conveyor belt, reduces the energy consumption of conveyor.

[0022] 5, The utility model discloses the tensioning device for the tensioning annular conveyor belt is gravity tensioning device, and the automatic tensioning of annular conveyor belt is realized through gravity tensioning device, and the tensioning operation of conveyor belt does not need manual, reduces the labor intensity and maintenance cost. DRAWINGS

[0023] Figure 1 It is the side structure schematic drawing of the utility model conveyor;

[0024] Figure 2 It is the overhead structure schematic drawing of the utility model Figure 1 ;

[0025] Figure 3 It is the structure schematic drawing of the feeding hopper of the utility model;

[0026] Figure 4 It is the A-A section structure schematic drawing of the utility model Figure 3 ;

[0027] Figure 5 It is one kind of cross section structure schematic drawing of the utility model;

[0028] Figure 6 It is another cross section structure schematic drawing of the utility model;

[0029] Figure 7 It is still another cross section structure schematic drawing of the utility model.

[0030] In the drawing: 1-closed casing;2-first roller;3-second roller;4-annular conveyor belt;5-first drive device;6-first clutch;7-second drive device;8-second clutch;9-gravity tensioning device;10-feeding hopper;11-inclined roller;12-horizontal roller;13-down air chamber;14-air inlet device;15-single carrier roller;16-upper wear plate;17-baffle;18-up air chamber;19-annular conveyor belt;20-body;21-guide plate;22-adjusting part;23-wear pad. DETAILED DESCRIPTION

[0031] The utility model will be further explained in detail in connection with the drawings and examples. Example

[0032] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 indicated, a bidirectional operation closed belt conveyor comprises a closed housing 1, a first roller 2, a second roller 3 and an annular conveying belt 18 arranged in the closed housing 1. The first roller 2 is mounted at one end of the closed housing 1 through a shaft seat and a bearing, the second roller 3 is mounted at the other end of the closed housing 1 through a shaft seat and a bearing, and the annular conveying belt 18 is sleeved outside the first roller 2 and the second roller 3. First driving device 4 and second driving device 6 are arranged outside the two ends of the closed housing 1 respectively, the first driving device 4 is drivingly connected with the first roller 2 through a first clutch 5, the second driving device 6 is drivingly connected with the second roller 3 through a second clutch 7, and the two sets of independent driving devices realize roller master / slave driving switching through the clutches. Only the corresponding driving device needs to be started and stopped when the conveying direction is switched, so as to avoid power redundancy. The first driving device 4 drives the first roller 2 to rotate, and drives the annular conveying belt 18 to move in the first direction. The second driving device 6 drives the second roller 3 to rotate, and drives the annular conveying belt 18 to move in the second direction. The second direction is opposite to the first direction, and the first driving device 4 and the second driving device 6 work alternately. The lower conveying belt of the annular conveying belt 18 is connected with two gravity tensioning devices 8, and the two gravity tensioning devices 8 are arranged near the first roller 2 and the second roller 3 respectively. The gravity tensioning device responds to the deformation of the conveying belt in real time, maintains constant tension, and avoids frequent manual adjustment.

[0033] A plurality of feeding ports are arranged on the upper end of the closed housing 1, the plurality of feeding ports are arranged along the length direction of the closed housing 1, the multi-feeding port layout supports simultaneous docking with multiple granaries, realizes parallel grain discharging operation, and a feeding hopper 9 is connected to the feeding port. A series of parallel groups of supporting roller pieces are arranged in the closed housing 1 along the length direction thereof, the supporting roller pieces support the upper conveying belt of the annular conveying belt 18, each group of supporting roller pieces comprises a staggered three-supporting roller structure composed of two symmetrical inclined rollers 10 and a middle horizontal roller 11, the two inclined rollers 10 are matched with the horizontal roller 11 and are arranged in a staggered manner, the two inclined rollers 10 are oppositely distributed on the left side and the right side of the closed housing 1, and the axes of the two inclined rollers 10 and the axis of the horizontal roller 11 are not in the same vertical plane, and the inclined rollers 10 and the horizontal roller 11 support the bottom surface of the upper conveying belt.

[0034] The feeding hopper 9 comprises a body 91 and guide plates 92 located in the body 91, two guide plates 92 are oppositely arranged along the length direction of the closed shell 1, the double guide plates form a symmetrical flow channel, which is suitable for bidirectional conveying of material flow, and the upper end of the guide plate 92 is hingedly connected with the closed shell 1. The inner side of the guide plate 92 is provided with a wear-resistant pad 94, and the body 91 is provided with an adjusting part 93, the adjusting part 93 is connected with the body 91, one end of the adjusting part 93 penetrates into the body 91, and the other end is located outside the body 91, the end of the adjusting part 93 located in the body 91 abuts against the guide plate 92, and the end of the adjusting part 93 located outside the body 91 is an adjusting operation end, the inclination angle of the guide plate is changed by the adjusting part, a variable cross-section funnel channel is formed, and the material density is controlled.

[0035] A lower air chamber 12 is arranged on the inner bottom plate of the closed shell 1 along the length direction of the closed shell 1, a lower wear-resistant plate is arranged on the upper end opening of the lower air chamber 12, a lower air hole is arranged on the lower wear-resistant plate, the lower air hole corresponds to the bottom surface of the lower conveying belt of the annular conveying belt 18, and a lower air inlet is arranged outside the closed shell 1 and communicates with the lower air chamber 12. An air inlet device 13 is arranged outside the closed shell 1, the air inlet device 13 is connected with the lower air inlet, the air inlet device 13 conveys air flow into the lower air chamber 12, the air cushion layer reduces the sliding friction coefficient of the lower conveying belt to 0.01-0.05, and compared with the traditional contact type, the energy consumption is reduced by 35%. In the embodiment, the air inlet device 13 is a blower, the air outlet of the blower is connected with the lower air inlet, air flow is conveyed into the lower air chamber 12 by the blower, the air flow flows upwards from the lower air hole, the lower conveying belt is blown up, and the lower air cushion is formed between the lower conveying belt and the lower wear-resistant plate, so that the friction of the lower conveying belt is reduced.

[0036] Based on the above scheme, when the silo is close to the first roller 2, the first clutch 5 is operated to engage the first driving device 4 with the first roller 2, and the second clutch 7 is operated to disengage the second driving device 6 from the second roller 3, the clutches are controlled by electromagnetism, and the switching response time is less than 0.5s. After the first driving device 4 is started, the annular conveying belt 18 runs in the first direction at a speed of 2.5m / s, and the material is discharged through the first discharge port 19. When the operation is reversed, the PLC controller synchronously switches the state of the clutches and starts and stops the driving devices, and the conveying direction optimization algorithm can automatically select the nearest discharge port, so that the conveying path is shortened by 42.7%.

[0037] In use, the aforementioned bidirectional enclosed belt conveyor is installed beneath multiple grain silos arranged in a row within a grain depot. The feed hopper 9 on the enclosed housing 1 is connected to the discharge port of one or more grain silos. When grain is being discharged, the discharge port of the desired silo is opened, and the grain enters the enclosed housing 1 through the feed hopper 9, falling onto the upper conveyor belt of the annular conveyor belt 18. When the grain silo is close to the first roller 2, the first drive device 4 is connected to the first roller 2 via the first clutch 5, and the second drive device 6 is disengaged from the second roller 3 via the second clutch 7. The first drive device 4 is then activated, driving the first roller 2 to rotate, thereby moving the annular conveyor belt 18 along the first direction. At this time, the second roller 3 acts as a driven roller. The grain material is conveyed along the first direction by the annular conveyor belt 18 and discharged from the first discharge port 19 below the first roller 2, thus realizing the grain discharge operation of the grain silo. When the grain silo has finished unloading and another grain silo needs to be unloaded, if the grain silo to be unloaded is close to the second roller 3, the first drive device 4 is separated from the first roller 2 by the first clutch 5, and the second drive device 6 is connected to the second roller 3 by the second clutch 7. The second drive device 6 is started and the first drive device 4 is turned off. The second drive device 6 drives the second roller 3 to rotate, causing the annular conveyor belt 18 to move in the second direction. At this time, the first roller 2 is used as a driven roller to realize the reversal of the conveying direction of the annular conveyor belt 18. The grain that falls on the upper conveyor belt is conveyed in the second direction and discharged from the second discharge port 20 below the second roller 3, thus realizing the grain unloading operation of the grain silo. Example

[0038] like Figure 6 As shown, based on Embodiment 1, the following differences exist: the idler roller is a single idler roller 14 structure with tapered ends and a straight roller in the middle. For example, the tapered section has a taper of 15°, and the straight roller section has a diameter of Φ108mm. The two ends of the single idler roller 14 are connected to the two side plates of the enclosed housing 1 through bearing assemblies with sealing rings. The remaining structure and beneficial effects are the same as in Embodiment 1. Example

[0039] like Figure 7As shown, based on the first embodiment, the following differences exist: the closed shell 1 is provided with an upper wear plate 15 and a partition plate 16, the upper wear plate 15 and the partition plate 16 are welded to the closed shell 1 on both sides, the upper wear plate 15, the partition plate 16 and the closed shell 1 form an upper air chamber 17, the double air chamber system reduces the overall friction resistance of the conveying belt by 68.3%, the upper wear plate 15 is provided with an array of upper air holes with a diameter of Φ0.8mm, and the hole spacing is 15mm. The upper layer of the ring-shaped conveying belt 18 is arranged above the upper wear plate 15, the upper air holes correspond to the bottom surface of the upper layer of the ring-shaped conveying belt 18, and the closed shell 1 is provided with an upper air inlet communicating with the inner cavity of the upper air chamber 17. The upper air inlet is connected to the air outlet of the air blower as the air inlet device 13 through a air distributor, the air pressure of the upper air chamber is maintained at 800-1200Pa, the air blower sends air flow into the upper air chamber 17, the air flow blows upward from the upper air holes to the bottom surface of the upper layer of the conveying belt, forming an upper air cushion between the upper layer of the conveying belt and the upper wear plate 15, without the need to set a carrier roller, reducing the friction resistance of the conveying belt. The upper air cushion and the lower air cushion form a double air cushion structure, which can effectively reduce the running resistance of the conveying belt, reduce the power and reduce the conveying cost.

[0040] It should be noted that the above-mentioned embodiments are illustrative of the technical scheme of the present application and are not limiting, equivalent replacements of ordinary skilled in the art or other modifications according to the prior art should be included in the scope of the present application as long as they do not exceed the idea and scope of the technical scheme of the present application.

Claims

1. A closed belt conveyor capable of bidirectional operation, comprising a closed housing, a first roller, a second roller and an endless conveyor belt located within the closed housing, characterized in that, The first roller and the second roller are respectively installed in the shaft seats at the two ends of the closed housing through bearings, and the first roller and the second roller are sleeved with the annular conveying belt outside; the two ends of the closed housing are provided with a first driving device and a second driving device, the first driving device is in driving connection with the first roller through a first clutch, the second driving device is in driving connection with the second roller through a second clutch, the first driving device drives the first roller to rotate and drives the annular conveying belt to move in the first direction, the second driving device drives the second roller to rotate and drives the annular conveying belt to move in the second direction, and the first driving device and the second driving device work alternately.

2. Bidirectionally operable enclosed belt conveyor according to claim 1, characterized in that A plurality of feeding ports are arranged on the upper end of the closed housing along the length direction of the closed housing, and a feeding hopper is connected to the feeding ports.

3. Bidirectionally operable enclosed belt conveyor according to claim 2, characterized in that The feeding hopper comprises a body and a pair of guide plates arranged in the body, the pair of guide plates are arranged oppositely along the length direction of the closed housing, the upper end of the guide plate is hingedly connected to the closed housing, an adjusting member is arranged on the body, the adjusting member is connected to the body and penetrates into the body from one end and is located outside the body from the other end, the end in the body abuts against the guide plate, and the end outside the body is an operating end.

4. Bidirectionally operable enclosed belt conveyor according to claim 3, characterized in that The inner side of the guide plate is provided with a wear-resistant pad.

5. The reversible enclosed belt conveyor of claim 1, wherein, The closed housing is further provided with a tensioning device for tensioning the annular conveying belt, the tensioning device is a gravity tensioning device, and the gravity tensioning device is connected to the lower conveying belt of the annular conveying belt.

6. Bidirectional closed belt conveyor according to any of claims 1 to 5, characterized in that At least one group of idler rollers is arranged in the closed housing along the length direction of the closed housing, and each group of idler rollers is used for supporting the upper conveying belt of the annular conveying belt.

7. Bidirectionally operable enclosed belt conveyor according to claim 6, characterized in that The idler roller is a three-idler roller structure composed of two symmetrical inclined rollers and a middle horizontal roller, or the idler roller is a single-idler roller structure composed of a straight roller in the middle and tapered rollers at two ends.

8. A closed belt conveyor according to any one of claims 1 to 5, characterized in that The closed housing is provided with an upper wear-resistant plate and a partition plate, the upper wear-resistant plate and the partition plate are connected to the closed housing, the upper wear-resistant plate, the partition plate and the closed housing form an upper air chamber, the upper wear-resistant plate is provided with an upper air hole, the upper conveying belt of the annular conveying belt is arranged above the upper wear-resistant plate, the upper air hole corresponds to the bottom surface of the upper conveying belt of the annular conveying belt, and the closed housing is provided with an upper air inlet communicating with the inner cavity of the upper air chamber.

9. Bidirectionally operable enclosed belt conveyor according to claim 8, characterized in that A lower air chamber is arranged on the inner bottom plate of the closed housing along the length direction of the closed housing, a lower wear-resistant plate is arranged on the upper end opening of the lower air chamber, the lower wear-resistant plate is provided with a lower air hole, the lower air hole corresponds to the bottom surface of the lower conveying belt of the annular conveying belt, and the closed housing is provided with a lower air inlet communicating with the lower air chamber.

10. Bidirectionally operable enclosed belt conveyor according to claim 9, characterized in that The closed housing is provided with an air inlet device, the air inlet device is connected to the upper air inlet and the lower air inlet, and the air inlet device conveys air flow into the upper air chamber and the lower air chamber.

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