An air inlet shroud for a tobacco processing drum type apparatus

Abstract

This application belongs to the technical field of tobacco processing equipment, specifically relating to an air inlet hood for tobacco processing tube-type equipment. It includes a pre-rehydration section and an air inlet section; the pre-rehydration section is positioned above the feeding trough and is sealed to the side wall of the feeding trough; one end of the pre-rehydration section is sealed to the outer wall of the feed inlet of the tube-type equipment, and the other end is equipped with an isolation component to isolate the interior and exterior of the pre-rehydration section; one end of the air inlet section connects to the top of the pre-rehydration section at the end furthest from the tube-type equipment, and the other end connects to a circulating fan. The air inlet hood of this application heats and humidifies the material about to enter the tube, greatly reducing tobacco breakage and improving the whole tobacco yield and filling value of the product; through excellent sealing design and pre-directing the hot and humid circulating air inside the tube-type equipment to the feeding trough, overall energy consumption is reduced; furthermore, the air inlet hood has a compact structure and can be directly installed at the feed inlet of existing tube-type equipment, making it easy to implement and promote.

Description

Technical Field

[0001] This application belongs to the technical field of tobacco processing equipment, specifically relating to an air inlet hood for tobacco processing tube-type equipment. Background Technology

[0002] In tobacco processing production lines, cylindrical equipment (such as drum-type rehumidifiers and feeders) is a key processing device. Tobacco material is typically fed into the drum via a vibrating trough or conveyor, where it is heated and rehumidified by circulating air to promote water or liquid absorption. However, when tobacco material with low moisture content and temperature directly enters the high-temperature, high-humidity drum, drastic temperature and humidity changes cause thermal and wet shocks, resulting in severe tobacco breakage and affecting the filling value and whole-shred yield of the finished tobacco. Furthermore, existing air inlet hoods have simple structures and limited functions, serving only as airflow channels. While they offer some insulation, their poor sealing allows hot, humid circulating air to leak out at the inlet, wasting energy and worsening the working environment. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies, namely, the inability of the air inlet hood to preheat and rehydrate tobacco materials and the poor sealing performance.

[0004] In view of this, the present invention provides an air inlet hood for tobacco processing tube equipment, which has the function of preheating and pre-moistening the tobacco material before it enters the tube equipment, and has good heat preservation and sealing performance.

[0005] Specifically, the following technical solutions are included: According to an embodiment of this application, an air inlet hood for a tobacco processing tube-type equipment is provided, including a pre-rehydration section and an air inlet section; the pre-rehydration section is disposed above the feeding trough and is sealed to the side wall of the feeding trough; one end of the pre-rehydration section is sealed to the outer wall of the feeding port of the tube-type equipment, and the other end is provided with an isolation member to isolate the interior and exterior of the pre-rehydration section; one end of the air inlet section is connected to the top of the pre-rehydration section away from the tube-type equipment, and the other end is connected to a circulating fan.

[0006] Furthermore, a guide plate is provided at the connection between the air inlet section and the pre-rehydration section; one end of the guide plate is connected to the inner wall of the air inlet section away from the cylindrical equipment, and the other end extends towards the feeding trough and the cylindrical equipment and is located above the feeding trough.

[0007] Furthermore, an insulation layer is fitted onto the outer wall of the air inlet section.

[0008] Furthermore, a heating device is provided between the outer wall of the air inlet section and the insulation layer.

[0009] Furthermore, sealing elements are provided between the pre-rehydration section and the side wall of the feeding trough, and between the pre-rehydration section and the outer side wall of the feed inlet of the cylindrical equipment.

[0010] Preferably, the isolation element includes a baffle adapted to the cross-sectional shape of the feed trough; the baffle is hinged to the top wall of the pre-rehydration section.

[0011] Preferably, the material of the insulation layer includes magnesium silicate or aluminum silicate.

[0012] Preferably, the heating device includes a flexible electric heating blanket.

[0013] Preferably, the sealing element comprises a high-temperature resistant silicone rubber sealing strip.

[0014] Preferably, the materials used to manufacture the pre-re-humidification section and the air inlet section are stainless steel.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: The air inlet hood of this application provides gentle and uniform heating and humidification for the material about to enter the cylinder, allowing the material to smoothly transition into the processing environment inside the cylinder. This greatly reduces tobacco breakage caused by thermal and moisture shock, improving the whole tobacco yield and filling value of the product. Through excellent sealing design and pre-directing the hot and humid circulating air inside the cylinder equipment to the feeding trough, it effectively utilizes the waste heat and humidity that originally circulated inside the cylinder and prevents the leakage of high-temperature and high-humidity gas at the feed inlet, achieving cascaded energy utilization, reducing overall energy consumption, and improving the working environment of the workshop. In addition, the air inlet hood has a compact structure and can be directly installed at the feed inlet of existing cylinder equipment without large-scale modification of the main equipment, making it easy to implement and promote. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the air inlet shroud according to an embodiment of this application; Figure 3 This is a schematic diagram of the air guide plate in an embodiment of this application.

[0017] The reference numerals in the attached figures are as follows: 1-Pre-rehydration section; 2-Air inlet section; 3-Air guide plate; 4-Insulation layer; 5-Heating device; 6-Baffle; 7-Feeding trough; 8-Cylindrical equipment; 9-Circulating fan. Detailed Implementation

[0018] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0019] In view of this, an air inlet hood for tobacco processing tube-type equipment is provided according to an embodiment of this application, such as... Figure 1 , Figure 2 As shown, it includes a pre-rehydration section 1 and an air inlet section 2; the pre-rehydration section 1 is installed above the feeding trough 7 and is sealed to the side wall of the feeding trough 7; one end of the pre-rehydration section 1 is sealed to the outer wall of the feed inlet of the cylindrical equipment 8, and the other end is provided with an isolation element to isolate the inside and outside of the pre-rehydration section 1; one end of the air inlet section 2 is connected to the top of the end of the pre-rehydration section 1 away from the cylindrical equipment 8, and the other end is connected to the circulating fan 9.

[0020] Specifically, through the sealed connection between the pre-rehydration section 1 and the feeding trough 7, the sealed connection between the pre-rehydration section 1 and the cylindrical equipment 8, and the installation of the isolation component, the pre-rehydration section 1, the feeding trough 7 located within the pre-rehydration section 1, and the cylindrical body of the cylindrical equipment together form a relatively sealed space, preventing the hot and humid circulating air within this sealed space from escaping. The circulating fan 9 delivers the hot and humid circulating air into the pre-rehydration section 1 through the air inlet section 2, forming a uniform hot and humid air curtain that directly acts on the material on the feeding trough 7, thereby increasing the surface temperature and moisture content of the material before it enters the cylindrical body, achieving preheating and pre-rehydration. Furthermore, the circulating air further enters the cylindrical body along with the material, creating a high-temperature and high-humidity processing environment within the cylindrical body. In specific operation, the air inlet section 2 and the pre-rehydration section 1 are set at an angle to allow the circulating air to enter the pre-rehydration section 1 gently and smoothly.

[0021] Furthermore, in one embodiment, such as Figure 3 As shown, an air guide plate 3 is provided at the connection between the air inlet section 2 and the pre-rehydration section 1; one end of the air guide plate 3 is connected to the inner wall of the air inlet section 2 away from the cylindrical equipment 8, and the other end extends towards the feeding trough 7 and the cylindrical equipment 8 and is located above the feeding trough 7.

[0022] Specifically, the angle of the air guide plate 3 is adjustable, which allows the circulating air to blow towards the material at the optimal angle according to the material's temperature and drying status, ensuring that the material is heated and humidified evenly, and avoiding localized over-drying or over-wetting situations.

[0023] Furthermore, in one embodiment, such as Figure 1 As shown, an insulation layer 4 is fitted onto the outer wall of the air inlet section 2. Specifically, the insulation layer 4 can reduce the heat loss generated when the circulating air passes through the air inlet section 2.

[0024] Furthermore, in one embodiment, such as Figure 1 As shown, a heating device 5 is provided between the outer wall of the air inlet section 2 and the insulation layer 4. Specifically, the heating device 5 can serve as a supplementary heat source to further heat the circulating air when the heat of the circulating air delivered by the circulating fan 9 is insufficient.

[0025] Furthermore, in one embodiment, a sealing element is provided between the pre-rehydration section 1 and the side wall of the feeding trough 7, and between the pre-rehydration section 1 and the outer side wall of the feed inlet of the cylindrical device 8.

[0026] Specifically, since the surface of the cylindrical equipment may become uneven during long-term use, the pre-rehydration section 1 and the outer wall of the feed inlet of the cylindrical equipment 8 can be connected by a connector to ensure a sealing effect. The sealing element is then placed between the pre-rehydration section 1 and the connector.

[0027] Preferably, in specific embodiments, such as Figure 1 , Figure 2 As shown, the isolation element includes a baffle 6 adapted to the cross-sectional shape of the feeding trough 7; the baffle 6 is hinged to the top wall of the pre-rehydration section 1.

[0028] Specifically, since the feeding trough 7 will drive the material located in the feeding trough 7 to move, and the height of the material is uneven, the baffle 6 can be rotated around the hinge so that the lower end of the baffle 6 always keeps in contact with the material under the action of gravity, thereby ensuring the isolation between the inside and outside of the pre-rehydration section 1.

[0029] Preferably, in a specific embodiment, the material of the insulation layer 4 includes magnesium silicate or aluminum silicate.

[0030] Preferably, in a specific embodiment, the heating device 5 includes a flexible electric heating blanket. Specifically, the electric heating blanket can be connected to a temperature control system, automatically starting and stopping according to the temperature sensor signal set in the air inlet section 2, so as to control the heat of the circulating air to be maintained within the required range.

[0031] Preferably, in a specific embodiment, the sealing element includes a high-temperature resistant silicone rubber sealing strip.

[0032] Preferably, in a specific embodiment, the materials used to manufacture the pre-rehydration section 1 and the air inlet section 2 are stainless steel. Specifically, the air guide plate 3 and the baffle 6 are both made of stainless steel.

[0033] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An air inlet hood for tobacco processing tube-type equipment, characterized in that, Including the pre-re-tide section (1) and the air inlet section (2); The pre-rehydration section (1) is covered above the feeding trough (7) and is sealed to the side wall of the feeding trough (7); One end of the pre-rehydration section (1) is sealed to the outer wall of the feed inlet of the cylindrical equipment (8), and the other end is provided with an isolation component to isolate the interior and exterior of the pre-rehydration section (1). One end of the air inlet section (2) is connected to the top of the pre-re-tide section (1) away from the cylindrical equipment (8), and the other end is connected to the circulating fan (9).

2. The air inlet hood for tobacco processing tube equipment according to claim 1, characterized in that, A guide plate (3) is provided at the connection between the air inlet section (2) and the pre-re-humidification section (1); One end of the air guide plate (3) is connected to the inner wall of the air inlet section (2) away from the cylindrical device (8), and the other end extends toward the feeding trough (7) and the cylindrical device (8) and is located above the feeding trough (7).

3. The air inlet hood for tobacco processing tube equipment according to claim 1, characterized in that, An insulation layer (4) is fitted on the outer wall of the air inlet section (2).

4. The air inlet hood for tobacco processing tube equipment according to claim 3, characterized in that, A heating device (5) is provided between the outer wall of the air inlet section (2) and the insulation layer (4).

5. The air inlet hood for tobacco processing tube equipment according to claim 1, characterized in that, A sealing element is provided between the side wall of the pre-rehydration section (1) and the side wall of the feeding trough (7) and between the pre-rehydration section (1) and the outer side wall of the feed inlet of the cylindrical device (8).

6. The air inlet hood for tobacco processing tube equipment according to claim 1, characterized in that, The isolation element includes a baffle (6) adapted to the cross-sectional shape of the feed trough (7); The baffle (6) is connected to the top wall of the pre-re-humidification section (1) by a hinge.

7. The air inlet hood for tobacco processing tube equipment according to claim 3, characterized in that, The insulation layer (4) is made of magnesium silicate or aluminum silicate.

8. The air inlet hood for tobacco processing tube equipment according to claim 4, characterized in that, The heating device (5) includes a flexible electric heating blanket.

9. The air inlet hood for tobacco processing tube equipment according to claim 5, characterized in that, The sealing element includes a high-temperature resistant silicone rubber sealing strip.

10. The air inlet hood for tobacco processing tube equipment according to claim 1, characterized in that, The materials used to make the pre-re-humidification section (1) and the air inlet section (2) are stainless steel.

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