Deep air blowing and impurity removing device of grain conveying machine

Abstract

The utility model relates to the technical field of grain storage, and discloses a deep air blowing and impurity removing device of a grain conveyor, which comprises a mounting frame, an air gathering cover is arranged above the mounting frame, an impurity removing mechanism is arranged below the mounting frame, an air blowing mechanism used for blowing air into the air gathering cover is arranged on one side, opposite to the grain conveying direction, of the air gathering cover, and the impurity removing mechanism is arranged below the air gathering cover. An air draft barrel is arranged at the top of the air gathering cover, and the end, away from the air draft barrel, of the air draft barrel is connected with an external air exhaust source. When the grain conveying machine conveys grains, the bottom of the impurity removing hook in the impurity removing mechanism extends downwards into the conveyed grains, the grains are turned over, impurities such as straw in the grains are intercepted, the air blowing mechanism blows air to the turned grains, grain hulls, dust and the like in the grains are blown up, and the impurities in the grains are removed. The air gathering cover is arranged to prevent blown impurities from escaping outwards so as to optimize the working environment, and the air draft barrel is matched with an external air draft source to extract the flying impurities in the air gathering cover so as to carry out centralized treatment on the flying impurities.

Description

Technical Field

[0001] The utility model relates to the technical field of grain storage, in particular to a deep blowing and impurity cleaning device for a grain conveyor. Background Technique

[0002] A grain conveyor is the main conveying facility for grain storage and transportation enterprises to carry out grain in and out operations. In the new grain warehousing operation, after being cleaned by a cleaning sieve, the grain still generally has the situation of being mixed with light impurities such as straw, grain husks, and dust, which affects the quality of grain warehousing and the safety of later storage.

[0003] In order to solve the problem of incomplete grain cleaning, most grain purchasing and storage enterprises install axial flow fans and rakes on the grain conveyor behind the cleaning sieve for deep impurity cleaning. Although this deep impurity cleaning method further cleans the impurities in the warehousing grain to a certain extent, it often causes dust and impurities to be raised at the grain inlet operation site, serious air pollution, a harsh working environment, which is not conducive to the physical and mental health of the personnel at the operation site. At the same time, the raised impurities and dust are not easy to collect and clean, cannot be weighed and accounted for, falsely increasing the storage management loss, and are not conducive to scientific grain storage management.

[0004] Therefore, we propose a deep blowing and impurity cleaning device for a grain conveyor to facilitate solving the problems raised above. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art in the above background technique, the purpose of the utility model is to provide a deep blowing and impurity cleaning device for a grain conveyor to solve the problems raised in the above background technique.

[0007] (2) Technical Solutions

[0008] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0009] A deep blowing and impurity cleaning device for a grain conveyor includes an installation frame, the installation frame is fixed above the conveyor belt of the grain conveyor through a connecting piece, a wind gathering hood is arranged above the installation frame, a cleaning mechanism is arranged below the installation frame, a blowing mechanism for blowing air into the wind gathering hood is arranged on one side of the wind gathering hood opposite to the grain conveying direction, an air extraction cylinder is arranged at the top of the wind gathering hood, and one end of the air extraction cylinder away from the air extraction cylinder is connected to an external air extraction source;

[0010] The cleaning mechanism includes a cross frame installed on the installation frame and a plurality of cleaning hooks fixed below the cross frame.

[0011] Furthermore, a plurality of cross frames are arranged at intervals along the grain conveying direction, a plurality of the cleaning hooks are arranged at equal distances along the length direction of the cross frame, and the cleaning hooks on two cross frames are arranged staggeredly.

[0012] Further, the impurity cleaning hook includes a hook body and a connecting cylinder fixed on the cross frame. The top of the hook body passes through the bottom of the connecting cylinder and is provided with a threaded section. A slider and a compression spring are arranged inside the connecting cylinder. The threaded section is in threaded connection with the slider, and both ends of the compression spring are abutted against the slider and the cross frame respectively.

[0013] Further, the air blowing mechanism is an axial flow fan, and one end of the axial flow fan located inside the air collecting hood is inclined downward.

[0014] Preferably, the external air extraction source is a negative pressure fan.

[0015] Preferably, the connecting member includes a connecting base fixed on the two side frames of the grain conveyor and a support column fixed on the connecting base. The top end of the support column is fixed to the bottom wall of the installation frame.

[0016] Preferably, there are a plurality of the connecting members, and the plurality of connecting members are respectively arranged on the opposite sides of the installation frame.

[0017] Further, the air collecting hood is in a frustum shape structure. A hood door is hinged on one side of the air collecting hood, and an observation window and a handle are arranged on the hood door.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] When the grain conveyor conveys grain, the impurity cleaning hook in the impurity cleaning mechanism has its bottom extending into the conveyed grain, playing a role in turning the grain and intercepting impurities such as straw in the grain at the same time. The air blowing mechanism blows the turned grain to blow up the chaff, dust, etc. in it. The air collecting hood is provided to prevent the blown-up impurities from escaping outward, so as to optimize the operation environment. The air extraction cylinder cooperates with the external air extraction source to extract the flying impurities in the air collecting hood for centralized treatment. Description of the drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the deep air blowing and impurity cleaning device of the grain conveyor of the present utility model;

[0022] Figure 2 It is a schematic diagram of the partial structure cross-section of the deep air blowing and impurity cleaning device of the grain conveyor of the present utility model;

[0023] Figure 3 It is a schematic diagram of the structure of the impurity cleaning mechanism of the deep air blowing and impurity cleaning device of the grain conveyor of the present utility model;

[0024] Figure 4 It is a schematic diagram of the upward view of the arrangement position of the impurity cleaning hooks of the deep air blowing and impurity cleaning device of the grain conveyor of the present utility model.

[0025] In the figure: grain conveyor 1, installation frame 2, connecting base 21, support column 22, air gathering hood 3, impurity cleaning mechanism 4, cross frame 41, impurity cleaning hook 42, hook body 421, connecting cylinder 422, slider 423, threaded section 424, compression spring 425, air blowing mechanism 5, air extraction cylinder 6, cover door 7, observation window 8, handle 9, closing plate 10. Specific implementation mode

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-4 As shown in the figure, the present utility model provides a deep air blowing and impurity cleaning device for a grain conveyor, including an installation frame 2. The installation frame 2 is fixed above the conveyor belt of the grain conveyor 1 through connectors. There are multiple connectors, which are respectively arranged on the front and rear sides of the installation frame 2. The connectors include a connecting base 21 fixed on the two side frames of the grain conveyor 1 and a support column 22 fixed on the connecting base 21. The top end of the support column 22 is fixed to the bottom wall of the installation frame 2. An air gathering hood 3 is arranged above the installation frame 2, and an impurity cleaning mechanism 4 is arranged below the installation frame 2;

[0028] Specifically, as Figure 2 and 4 shown, the impurity cleaning mechanism 4 includes a cross frame 41 installed on the installation frame 2 and a plurality of impurity cleaning hooks 42 fixed below the cross frame 41. There are multiple cross frames 41 and impurity cleaning hooks 42. The multiple cross frames 41 are arranged at equal intervals along the length direction (grain conveying direction) of the installation frame 2, and the multiple impurity cleaning hooks 42 are arranged at equal intervals along the length direction of the cross frame 41. The impurity cleaning hooks 42 on two adjacent cross frames 41 are arranged staggeredly. When the grain conveyor 1 conveys grain, the hooks at the bottom of the multiple impurity cleaning hooks 42 extend into the grain to turn over the conveyed grain, and at the same time intercept large-volume impurities (such as straw) in the grain. The staggered impurity cleaning hooks 42 turn over and intercept the grain more evenly and thoroughly;

[0029] As Figure 3As shown in the figure, the cleaning hook 42 includes a hook body 421 and a connecting cylinder 422 fixed on the cross frame 41. The top of the hook body 421 passes through the bottom of the connecting cylinder 422 and is provided with a threaded section 424. Inside the connecting cylinder 422, a slider 423 and a compression spring 425 are arranged. The threaded section 424 is threadedly connected to the slider 423. The two ends of the compression spring 425 are respectively abutted against the slider 423 and the cross frame 41. The arrangement of the compression spring 425 and the slider 423 enables the hook body 421 to bounce up and down with the compression spring 425 in case of the conveyor belt jittering, so as to avoid the hook body 421 scratching the conveyor belt. At the same time, since the hook body 421 and the slider 423 are connected by a threaded connection, when the hook body 421 is damaged, it can be disassembled and replaced separately to reduce the maintenance cost.

[0030] On one side of the air collecting hood 3 opposite to the grain conveying direction, a blowing mechanism 5 for blowing air into the air collecting hood 3 is arranged. The blowing mechanism 5 is preferably an axial flow fan, and the blowing port of the axial flow fan is located inside the air collecting hood 3 and is inclined downward. A suction pipe 6 is arranged at the top of the air collecting hood 3. One end of the suction pipe 6 far from the suction pipe 6 is connected to an external suction air source. The external suction air source can be a negative pressure fan, etc. When the cleaning hook 42 turns the grain, the blowing mechanism 5 blows away the exposed impurities in the grain. The air collecting hood 3 prevents the impurities from flying randomly. The negative pressure fan sucks away the blown impurities through the suction pipe 6 for centralized collection.

[0031] As a preferred technical solution of the present utility model: the air collecting hood 3 is in a frustum shape structure, which plays a guiding role for the flying impurities when the suction pipe 6 sucks air. One side of the air collecting hood 3 is hinged with a hood door 7. An observation window 8 and a handle 9 are arranged on the hood door 7. The arrangement of the hood door 7 can open it to manually clean the impurities not sucked away by the suction pipe 6. The arrangement of the observation window 8 facilitates the staff to check the internal situation of the air collecting hood 3.

[0032] As a preferred technical solution of the present utility model: on both sides of the bottom of the installation frame 2, there are downwardly extending closing plates 10 to close the gap between the installation frame 2 and the frame of the grain conveyor 1, further improving the negative pressure dust removal effect of the suction pipe and reducing the dust from flying out of the gap, and improving the optimization effect on the working environment.

[0033] For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances; for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A deep blowing and impurity cleaning device for a grain conveyor, characterized in that: It includes an installation frame (2), and the installation frame (2) is fixed above the conveyor belt of the grain conveyor (1) through a connecting piece. A wind gathering hood (3) is arranged above the installation frame (2), and a cleaning mechanism (4) is arranged below the installation frame (2). On one side of the wind gathering hood (3) opposite to the grain conveying direction, a blowing mechanism (5) for blowing air into the wind gathering hood (3) is arranged. A suction cylinder (6) is arranged at the top of the wind gathering hood (3), and one end of the suction cylinder (6) far from the suction cylinder (6) is connected to an external suction air source; The cleaning mechanism (4) includes a cross frame (41) installed on the installation frame (2) and a plurality of cleaning hooks (42) fixed below the cross frame (41).

2. The deep blowing and impurity cleaning device for a grain conveyor according to claim 1, wherein: A plurality of the cross frames (41) are arranged at intervals along the grain conveying direction, and the plurality of cleaning hooks (42) are arranged at equal intervals along the length direction of the cross frame (41), and the cleaning hooks (42) on two cross frames (41) are staggered.

3. The deep blowing and impurity cleaning device for a grain conveyor according to claim 2, characterized in that: The cleaning hook (42) includes a hook body (421) and a connecting cylinder (422) fixed on the cross frame (41). The top of the hook body (421) passes through the bottom of the connecting cylinder (422) and is provided with a threaded section (424). A slider (423) and a compression spring (425) are arranged inside the connecting cylinder (422). The threaded section (424) is threadedly connected to the slider (423), and both ends of the compression spring (425) are abutted against the slider (423) and the cross frame (41) respectively.

4. The depth blowing and impurity cleaning device for a grain conveyor according to claim 1, characterized in that: The blowing mechanism (5) is an axial flow fan, and one end of the axial flow fan located inside the wind gathering hood (3) is inclined downward.

5. The deep blowing and impurity cleaning device for a grain conveyor according to claim 1, wherein: The external suction air source is a negative pressure fan.

6. The deep blowing and impurity cleaning device for a grain conveyor according to claim 1, wherein: The connecting piece includes a connecting base (21) fixed on the two side frames of the grain conveyor (1) and a support column (22) fixed on the connecting base (21). The top end of the support column (22) is fixed to the bottom wall of the installation frame (2).

7. The deep blowing and impurity cleaning device for a grain conveyor according to claim 6, characterized in that: There are a plurality of the connecting pieces, and the plurality of connecting pieces are respectively arranged on the opposite sides of the installation frame (2).

8. The deep blowing and impurity cleaning device for a grain conveyor according to claim 1, characterized in that: The wind gathering hood (3) is in a frustum shape structure. A hood door (7) is hinged on one side of the wind gathering hood (3), and an observation window (8) and a handle (9) are arranged on the hood door (7).

9. The deep blowing and impurity cleaning device for a grain conveyor according to claim 1, characterized in that: Closed plates (10) extending downward are arranged at the bottoms of both sides of the installation frame (2).

Images