Turbulence prevention device at wind tunnel of material conveying path

Abstract

The utility model relates to the technical field of material transportation, in particular to an anti-turbulence device at a wind tunnel of a material conveying path, which comprises a head covering assembly, a middle covering assembly and a tail covering assembly, the head covering assembly, the middle covering assembly and the tail covering assembly are sequentially arranged on the belt conveyor in a covering mode in the direction from the feeding port to the discharging port, a tobacco leaf conveying channel is defined by the head covering assembly, the middle covering assembly and the tail covering assembly and the belt conveyor together, and the tobacco leaf conveying channel communicates with the feeding port and the discharging port. The tobacco leaf conveying channel is of a straight hole structure with an opening extending linearly on the section where the head covering assembly and the tail covering assembly are located, and the opening of the tobacco leaf conveying channel on the section where the middle covering assembly is located is gradually increased in the direction close to the discharging port. And the opening of the tobacco leaf conveying channel on the section of the head covering assembly is smaller than that on the section of the tail covering assembly. The turbulent flow preventing device can adjust the speed and the air pressure of air flow and reduce the situation that materials are irregularly blown away and fall to the ground.

Description

Technical Field

[0001] The utility model relates to the technical field of material transportation, in particular to an anti-turbulence device at a wind tunnel where materials are transported. Background Art

[0002] In the tobacco factory's tobacco-making workshop, the leaf storage area needs to supply air to maintain the ambient temperature and humidity, so the ambient air pressure in this area is in a positive pressure state; while the cutting and drying area needs to use a large number of equipment for dust removal and air suction to meet the equipment and on-site working conditions, so the ambient air pressure in this area is in a negative pressure state. In view of the different process requirements of the leaf storage area and the cutting and drying area, the two are often kept in a relatively closed state during production activities. However, in order to realize the transportation of tobacco leaves, it is also necessary to open a through-wall hole on the partition wall between the leaf storage area and the cutting and drying area to allow the belt conveyor to pass through, and use the belt conveyor to realize the transportation of tobacco leaves between the leaf storage and cutting processes.

[0003] Due to the pressure difference between the leaf storage area and the cutting and drying area, when the belt conveyor is in production, a large airflow will be formed near the wall holes. These airflows will blow to the top of the vibrating trough after passing through the conveyor belt of the belt conveyor. While the vibrating trough drives the tobacco materials on the conveyor belt to vibrate rhythmically, some small and light tobacco materials will be blown away by the airflow and fall down under the multiple effects of the conveying equipment and the movement of the tobacco materials, causing adverse effects on the workshop environment. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an anti-turbulence device at a wind tunnel of a material conveying path which can adjust the speed and pressure of the air flow and reduce the irregular scattering and falling of materials.

[0005] The utility model adopts the following technical solutions:

[0006] The utility model provides an anti-disturbance device at a wind tunnel of a material conveying passage, wherein the feed inlet of the belt conveyor is located in a leaf storage area, the discharge outlet passes through a wall hole and is located in a cutting and drying area, and comprises a head covering component, a middle covering component and a tail covering component, the head covering component, the middle covering component and the tail covering component are sequentially covered on the belt conveyor from the feed inlet to the discharge outlet and together with the belt conveyor, a tobacco conveying channel is enclosed, the tobacco conveying channel connects the feed inlet and the discharge outlet, the tobacco conveying channel is a straight hole structure with an opening extending in a straight line at the section where the head covering component is located and the section where the tail covering component is located, the opening of the tobacco conveying channel at the section where the middle covering component is located gradually increases in a direction close to the discharge outlet, and the opening of the tobacco conveying channel at the section where the head covering component is located is smaller than the opening of the tobacco conveying channel at the section where the tail covering component is located.

[0007] Preferably, the outer contour of the middle covering component is continuously raised toward the discharge port.

[0008] Preferably, the head covering component, the middle covering component and the tail covering component are all isosceles trapezoidal cross-sectional shapes, and the isosceles trapezoidal cross-sectional shapes extend along the conveying direction of the belt conveyor.

[0009] Preferably, the head covering assembly includes a pair of transversely opening cover plates, a pair of vertically opening cover plates and a fixed cover plate. The pair of transversely opening cover plates are hingedly arranged on the side of the middle covering assembly and can be opened and closed along the two sides of the belt conveyor. The pair of vertically opening cover plates are arranged adjacent to the transversely opening cover plates and can be opened and closed along the extension direction of the belt conveyor. The fixed cover plate cover is arranged at the feed port of the belt conveyor.

[0010] Preferably, the tail covering assembly includes two cover plates and a support beam, one cover plate is hinged to the discharge cover position of the belt conveyor by a hinge, and the other cover plate is hinged to the middle covering assembly by a hinge, the hinges of the two cover plates are arranged perpendicular to the conveying direction of the belt conveyor, and the support beam is arranged horizontally on the belt conveyor and is located directly below the two cover plates.

[0011] Preferably, it also includes a mesh protective cover, which is arranged on the top surface and the front end inclined surface of the belt conveyor discharge cover.

[0012] Preferably, the mesh protective cover is hingedly arranged on the discharge cover of the belt conveyor through a hinge, and the hinge on the mesh protective cover is arranged perpendicular to the conveying direction of the belt conveyor.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The anti-disturbance device at the wind tunnel of the material conveying passage of the utility model forms a tobacco conveying channel by covering the belt conveyor. The head section of the tobacco conveying channel adopts a small cross-sectional size design under the premise of ensuring the flow rate, so as to reduce the air intake in the channel as much as possible, thereby achieving the purpose of reducing the air flow speed and air pressure. The middle section adopts a variable cross-sectional size design and is matched with a tail section with a further increased cross-sectional size, which further reduces the air flow speed and air pressure in the channel, thereby reducing the possibility of materials being irregularly blown away and falling to the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the use status of the anti-turbulence device at the wind tunnel where the material is conveyed in the embodiment of the utility model.

[0016] Figure 2 It is a schematic diagram of the maintenance status of the anti-turbulence device at the wind tunnel where the material is conveyed in the embodiment of the utility model.

[0017] Figure 3It is a front view of the anti-turbulence device at the wind tunnel of the material conveying passage in the embodiment of the utility model when in use.

[0018] Figure 4 It is a front view of the anti-turbulence device at the wind tunnel of the material conveying passage in the embodiment of the utility model in the maintenance state.

[0019] The reference numerals are described as follows:

[0020] 1. Belt conveyor 3. Middle cover assembly

[0021] 11. Discharge cover 4, tail cover assembly

[0022] 2. Head cover assembly 41, cover plate

[0023] 21. Horizontal cover plate 42. Support beam

[0024] 22. Vertical cover plate 5. Tobacco conveying channel

[0025] 23. Fixed cover plate 6, mesh protective cover DETAILED DESCRIPTION

[0026] The following is a further detailed description of the specific implementations of the present invention in conjunction with the accompanying drawings. These implementations are only used to illustrate the present invention, but not to limit the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In addition, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0030] See also Figure 1 and Figure 3 The present embodiment provides an anti-turbulence device at a wind tunnel of a material conveying passage. The feed port of the belt conveyor 1 is located in the leaf storage area, and the discharge port passes through the wall hole and is located in the cutting and drying area. The belt conveyor 1 includes a head covering component 2, a middle covering component 3 and a tail covering component 4. The head covering component 2, the middle covering component 3 and the tail covering component 4 are sequentially covered on the belt conveyor 1 from the feed port to the discharge port and together with the belt conveyor 1, a tobacco conveying channel 5 is constructed. The tobacco conveying channel 5 connects the feed port and the discharge port. The tobacco conveying channel 5 is a straight hole structure with an opening extending in a straight line in the section where the head covering component 2 and the section where the tail covering component 4 are located. The opening of the tobacco conveying channel 5 in the section where the middle covering component 3 is located gradually increases in the direction close to the discharge port, and the opening of the tobacco conveying channel 5 in the section where the head covering component 2 is located is smaller than the opening of the tobacco conveying channel 5 in the section where the tail covering component 4 is located.

[0031] The anti-turbulence device at the wind tunnel of the material conveying path of this embodiment is formed by covering the belt conveyor 1 to form a tobacco conveying channel 5. The head section of the tobacco conveying channel 5 adopts a small cross-sectional size design under the premise of ensuring the flow rate, so as to minimize the air intake in the channel and achieve the purpose of reducing the air flow speed and air pressure. The middle section adopts a variable cross-sectional size design and is matched with a tail section with a further increased cross-sectional size, which further reduces the air flow speed and air pressure in the channel, thereby reducing the possibility of materials being irregularly blown away and falling to the ground.

[0032] Preferably, see Figure 1 and Figure 3 , the outer contour of the middle cover component 3 is continuously lifted toward the discharge port. Since the outer shape of the tobacco conveying channel 5 changes in the section where the middle cover component 3 is located, the direction of the airflow flowing out of the through-wall hole is also changed, thereby weakening the influence of the external airflow of the tobacco conveying channel 5 on the tobacco material at the discharge port.

[0033] Preferably, see Figure 1, the head covering component 2, the middle covering component 3 and the tail covering component 4 are all isosceles trapezoidal cross-sectional shapes, and the isosceles trapezoidal cross-sectional shapes extend along the conveying direction of the belt conveyor 1. The isosceles trapezoidal cross-sectional shape design is considered from the perspective of function and strength. From a functional point of view, since the amount of tobacco material fed into the belt conveyor 1 from the feed port is constantly changing, the isosceles trapezoidal cross-sectional shape is adopted to allow the tobacco conveying channel 5 to reserve sufficient space in the height direction, thereby ensuring the normal transportation of tobacco materials on the belt conveyor 1; and from a strength point of view, the head covering component 2, the middle covering component 3 and the tail covering component 4 are all covered on the belt conveyor 1. When all three adopt isosceles trapezoidal cross-sectional shapes, the three can strengthen their own strength at the bends to prevent bending and sinking, thereby ensuring the stability of the structure of the tobacco conveying channel 5.

[0034] Preferably, see Figure 2 and Figure 4 The head cover assembly 2 includes a pair of horizontal cover plates 21, a pair of vertical cover plates 22 and a fixed cover plate 23. The pair of horizontal cover plates 21 are hingedly arranged on the side of the middle cover assembly 3 and can be opened and closed along the two sides of the belt conveyor 1. The pair of vertical cover plates 22 are arranged adjacent to the horizontal cover plates 21 and can be opened and closed along the extension direction of the belt conveyor 1. The fixed cover plate 23 is arranged at the feed port of the belt conveyor 1. After opening the horizontal cover plates 21 and the vertical cover plates 22, the corresponding sections on the belt conveyor 1 can be maintained.

[0035] It should be noted that since detection equipment is often required to be installed on one side of the belt conveyor 1, in order to avoid the detection equipment, the head cover assembly 2 does not adopt a design of a whole pair of vertical cover plates 22, but a pair of horizontal cover plates 21 are arranged at the detection instrument layout position.

[0036] Preferably, see Figure 2 and Figure 4 The tail cover assembly 4 includes two cover plates 41 and a support beam 42. One cover plate 41 is hinged to the discharge cover 11 of the belt conveyor 1, and the other cover plate 41 is hinged to the middle cover assembly 3. The hinges of the two cover plates 41 are arranged perpendicular to the conveying direction of the belt conveyor 1. The support beam 42 is arranged horizontally on the belt conveyor 1 and is located directly below the two cover plates 41. When it is necessary to maintain the belt conveyor 1 at the section where the tail cover assembly 4 is located, the internal conveying belt can be exposed by lifting the two cover plates 41; at the same time, in order to avoid the problem of the cover plate 41 falling due to the excessive length of the cover plate 41, a support beam 42 is also provided to support and position the cover plate 41.

[0037] Preferably, see Figure 1The anti-turbulence device at the material conveying path wind tunnel of this embodiment also includes a mesh protective cover 6, which is arranged on the top surface and the front inclined surface of the discharge cover 11 of the belt conveyor 1. The arrangement of the mesh protective cover 6 can further release the air pressure in the tobacco conveying channel 5, so as to achieve the purpose of reducing the air flow velocity at the discharge port of the belt conveyor 1.

[0038] Preferably, see Figure 2 and Figure 4 The mesh protective cover 6 is hingedly arranged on the discharge cover 11 of the belt conveyor 1, and the hinge on the mesh protective cover 6 is arranged perpendicular to the conveying direction of the belt conveyor 1, so that the mesh protective cover 6 can be lifted up to perform maintenance on the belt conveyor 1.

[0039] The process of installing the anti-turbulence device at the material conveying path wind tunnel of this embodiment on the original belt conveyor, that is, the modification process of the belt conveyor is as follows:

[0040] (1) Measure and map the upper plane of the belt conveyor 1 to understand the original size of the equipment;

[0041] (2) Design and install a head cover assembly 2, a middle cover assembly 3 and a tail cover assembly 4 on the belt conveyor 1;

[0042] (3) The top and front end inclined panels of the discharge cover 11 of the belt conveyor 1 are replaced with the mesh protective cover 6 .

[0043] In actual application on site: before the improvement, the average material drop of Line 1# per shift was 0.28kg; after the improvement, there was no material drop, and the effect was obvious.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An anti-turbulence device at a wind tunnel for conveying materials, wherein the feed port of the belt conveyor (1) is located in the leaf storage area, and the discharge port passes through a through-wall hole and is located in the cutting and drying area, characterized in that: The invention comprises a head covering component (2), a middle covering component (3) and a tail covering component (4); the head covering component (2), the middle covering component (3) and the tail covering component (4) are sequentially covered on the belt conveyor (1) along the direction from the feed port to the discharge port and together with the belt conveyor (1) form a tobacco conveying channel (5); the tobacco conveying channel (5) connects the feed port and the discharge port; the tobacco conveying channel (5) is a straight hole structure with an opening extending in a straight line in the section where the head covering component (2) is located and the section where the tail covering component (4) is located; the opening of the tobacco conveying channel (5) in the section where the middle covering component (3) is located gradually increases in the direction close to the discharge port, and the opening of the tobacco conveying channel (5) in the section where the head covering component (2) is located is smaller than the opening of the tobacco conveying channel (5) in the section where the tail covering component (4) is located.

2. The anti-turbulence device at the wind tunnel of the material conveying passage according to claim 1 is characterized in that: The outer contour of the middle covering component (3) is continuously raised towards the discharge port.

3. The anti-turbulence device at the wind tunnel of the material conveying passage according to claim 1 is characterized in that: The head covering component (2), the middle covering component (3) and the tail covering component (4) all have isosceles trapezoidal cross-sectional shapes, and the isosceles trapezoidal cross-sectional shapes extend along the conveying direction of the belt conveyor (1).

4. The anti-turbulence device at the wind tunnel of the material conveying passage according to claim 1 is characterized in that: The head cover assembly (2) comprises a pair of transverse cover plates (21), a pair of vertical cover plates (22) and a fixed cover plate (23); the pair of transverse cover plates (21) are hingedly arranged on the side of the middle cover assembly (3) and can be opened and closed along the two sides of the belt conveyor (1); the pair of vertical cover plates (22) are arranged adjacent to the transverse cover plates (21) and can be opened and closed along the extension direction of the belt conveyor (1); and the fixed cover plate (23) is arranged at the feed port of the belt conveyor (1).

5. The anti-turbulence device at the wind tunnel of the material conveying passage according to claim 1, characterized in that: The tail cover assembly (4) comprises two cover plates (41) and a support beam (42), one of the cover plates (41) being hinged to the discharge cover (11) of the belt conveyor (1) through a hinge, and the other cover plate (41) being hinged to the middle cover assembly (3) through a hinge, the hinges of the two cover plates (41) being arranged perpendicular to the conveying direction of the belt conveyor (1), and the support beam (42) being arranged transversely on the belt conveyor (1) and being located directly below the two cover plates (41).

6. The anti-turbulence device at the wind tunnel of the material conveying passage according to claim 1, characterized in that: It also comprises a mesh protective cover (6), wherein the mesh protective cover (6) is arranged on the top surface and the front end inclined surface of the discharge cover (11) of the belt conveyor (1).

7. The anti-turbulence device at the wind tunnel of the material conveying passage according to claim 6, characterized in that: The mesh protective cover (6) is hingedly arranged on the discharge cover (11) of the belt conveyor (1) via a hinge, and the hinge on the mesh protective cover (6) is arranged perpendicular to the conveying direction of the belt conveyor (1).

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