Hot air volume stabilizing and balancing structure of sheet baking machine

Abstract

The utility model discloses a hot air volume stabilizing and balancing structure of a sheet baking machine, which comprises a chamber comprising a front hot air chamber and a rear hot air chamber which are communicated and sequentially distributed, a front air passing screen plate obliquely arranged in the front hot air chamber, a rear air passing screen plate obliquely arranged in the rear hot air chamber, and a rear air passing screen plate obliquely arranged in the rear hot air chamber. The length of the rear air passing screen plate is not smaller than that of the rear hot air source, the end, close to the rear hot air source, of the rear air passing screen plate is higher than the rear hot air source, and the other end of the rear air passing screen plate obliquely extends downwards to the other side, in the width direction, of the rear hot air cavity in the direction away from the rear hot air source. The purpose is to control the air passing speed and pressure to ensure that hot air uniformly flows to a baking area and is in full contact with tobacco leaves, and baking of the tobacco leaves is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of slice baking machine equipment, in particular to a hot air volume stabilizing and balancing structure of a slice baking machine. Background Art

[0002] The tobacco leaf drying machine is a device for drying tobacco leaves, and a conveyor chain plate is arranged inside the machine, on which a number of tobacco leaves to be dried are laid flat. The tobacco leaf drying machine in the prior art has a long air inlet distance, and heat loss may occur, resulting in uneven baking temperature, that is, hot air enters from one end and gradually flows to the other end. During the flow, part of the hot air flows upward to the baking bin through the holes in the air mesh plate, and the remaining hot air continues to flow forward. The further back it goes, the less hot air volume and the lower the temperature, resulting in different baking effects. Another tobacco leaf drying machine is provided with two opposite air inlets, and the two hot air streams are opposite to each other, which is easy to produce turbulence, making the air supply extremely unstable.

[0003] Therefore, how to provide a hot air volume stable balance structure for a slice baking machine that can avoid the above-mentioned disadvantages has become a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a device for ensuring that the hot air volume of a slice baking machine is overall stable and evenly distributed in the entire baking bin.

[0005] The specific technical solutions are as follows:

[0006] A hot air volume stabilizing and balancing structure for a slice roasting machine comprises a slice roasting machine body with a chamber inside, the chamber having a length and a width, a conveying chain plate movable along the length direction is arranged at an upper position of the chamber, tobacco leaves to be dried are laid on the conveying chain plate, the chamber below the conveying chain plate comprises a front hot air chamber and a rear hot air chamber which are connected and sequentially distributed along the length direction, the front hot air chamber is provided with a front hot air source extending and distributed along the length direction of the front hot air chamber and connected to the front hot air chamber on one side in the width direction thereof, and also comprises a front air passing mesh plate which is obliquely arranged in the front hot air chamber, the length of the front air passing mesh plate is not less than the length of the front hot air source, and the front One end of the air flow mesh plate close to the front hot air source is higher than the height of the front hot air source, and the other end extends obliquely downward in a direction away from the front hot air source to the other side of the front hot air chamber in the width direction. The rear hot air chamber is formed with a rear hot air source on one side in the width direction, which extends along the length direction of the rear hot air chamber and is connected to the rear hot air chamber. It also includes a rear air flow mesh plate, which is obliquely arranged in the rear hot air chamber. The length of the rear air flow mesh plate is not less than the length of the rear hot air source. One end of the rear air flow mesh plate close to the rear hot air source is higher than the height of the rear hot air source, and the other end extends obliquely downward in a direction away from the rear hot air source to the other side of the rear hot air chamber in the width direction.

[0007] Preferably, 2. the perforations of the front air-passing mesh plate distributed in the direction away from the front hot air source are arranged in a gradual manner, and the gradual manner is: the farther away from the front hot air source, the smaller the perforations and the smaller the spacing between the perforations;

[0008] The perforations of the rear air-passing mesh plate distributed in the direction away from the rear hot air source are arranged in a gradual manner, and the gradual manner is: the farther away from the rear hot air source, the smaller the perforations and the smaller the spacing between the perforations;

[0009] The perforations are arranged in a gradient manner: the perforations are arranged in rows, and the diameter of the holes in the first row closest to the corresponding hot air source is 7 mm and the spacing is 25 mm, and the aperture diameter and spacing of the holes in the subsequent rows are arranged in a gradient manner with a gradient rate of 0.92;

[0010] The angles between the front air-passing mesh plate and the rear air-passing mesh plate and the bottom wall of the chamber are 5-7°.

[0011] Preferably, the front hot air source and the rear hot air source are arranged relative to each other in a front-to-back staggered manner along the length direction.

[0012] Preferably, the slice toasting machine warehouse body is in the shape of a rectangular parallelepiped, and is provided with five front air inlets spaced apart along the length direction thereof at the side wall corresponding to the front hot air chamber, forming the front hot air source, and the distance between the two farthest apart of the five front air inlets forms the length of the front hot air source, and is provided with five rear air inlets spaced apart along the length direction thereof at the side wall corresponding to the rear hot air chamber, forming the rear hot air source, and the distance between the two farthest apart of the five rear air inlets forms the length of the rear hot air source.

[0013] Preferably, the slice toasting machine housing is provided with a plurality of front exhaust holes arranged at intervals along the length direction thereof at an upper end corresponding to the front hot air chamber, the front exhaust holes are all connected to the front hot air chamber, and the front exhaust holes are located on the other side away from the side where the front hot air source is located, and the slice toasting machine housing is provided with a plurality of rear exhaust holes arranged at intervals along the length direction thereof at an upper end corresponding to the rear hot air chamber, the rear exhaust holes are all connected to the rear hot air chamber, and the rear exhaust holes are located on the other side away from the side where the rear hot air source is located.

[0014] Preferably, a front hot air collecting bin connected to the 5 front air inlets is arranged at the positions of the slice toaster bin corresponding to the 5 front air inlets, and a plurality of radiators arranged along the length direction are arranged above the front hot air collecting bin, and an axial flow fan is arranged above each radiator. The heat generated by the radiator exchanges heat with the air blown by the axial flow fan to increase the air temperature and generate hot air, and the generated hot air continues to be blown to the front hot air collecting bin.

[0015] Preferably, a rear hot air collecting bin connected to the five rear air inlets is arranged at the positions of the slice toaster bin body corresponding to the five rear air inlets, and a plurality of radiators arranged along the length direction are arranged above the rear hot air collecting bin, and an axial flow fan is arranged above each radiator. The heat generated by the radiator exchanges heat with the air blown by the axial flow fan to increase the air temperature and generate hot air, and the generated hot air continues to be blown to the rear hot air collecting bin.

[0016] Preferably, a third hot air source identical to the front hot air source is arranged behind the rear hot air source, and the third hot air source and the front hot air source are located on the same side, and a third air flow mesh plate identical to the front air flow mesh plate is arranged at the position corresponding to the third hot air source.

[0017] The hot air volume stable and balanced structure of the slice baking machine provided by the utility model has the following technical effects:

[0018] The front hot air source and the rear hot air source are arranged on both sides of the oven body and arranged in a front-to-back order. The configuration is exactly the same, and the left and right air inlets (also called two-sided air inlets) are set to solve the problem of uneven baking temperature caused by heat loss due to long air inlet distance. The hot air enters from one end and gradually flows to the other end. During the flow process, part of the hot air flows upward to the baking chamber through the holes of the air mesh plate, and the remaining hot air continues to flow forward. The further back, the hot air volume gradually decreases and the temperature gradually decreases. In this process, a gradual air duct is used to ensure the gradual change of the hot air volume, but the problem of temperature gradient is still not solved, resulting in different baking effects. The use of left and right air inlets can just neutralize this problem and ultimately ensure uniform baking. That is, when the air is inlet from the left end (air inlet from the front hot air source), the baking temperature gradually decreases from left to right, and when the air is inlet from the right end (air inlet from the rear hot air source), the baking temperature gradually decreases from right to left. Through this alternating overlap method, the temperature in the baking chamber is finally neutralized to achieve a uniform and stable effect. The air mesh plates (front and back) are tilted to make the cross section of the air duct gradually narrow (the space gradually becomes smaller) to ensure the gradually decreasing hot air flow speed and pressure in the bin, and the arrangement and size of the perforations are gradually changed. The further back, the smaller the holes and the smaller the spacing. The purpose is to control the air speed and pressure to ensure that the hot air flows evenly to the baking area, fully contacts the tobacco leaves, and completes the baking of the tobacco leaves.

[0019] Specifically, the perforations are distributed in rows, and the diameter of the holes in the first row closest to the corresponding hot air source is 7mm and the spacing is 25mm, and the aperture and spacing of the holes in the subsequent rows are arranged in a gradient with a gradient rate of 0.92; the angle between the front air mesh plate and the rear air mesh plate and the bottom wall of the chamber is 5-7°; this specific method can achieve a drying degree of 96% for tobacco leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a specific implementation method of a hot air volume stabilization balance structure of a slice baking machine;

[0021] Figure 2 It is a structural schematic diagram of another specific implementation method;

[0022] Figure 3 It is a schematic diagram of the structure of the air-passing mesh plate (front and rear).

[0023] Numbers in the figure: 1 chamber, 2 conveyor chain plate, 3 front hot air chamber, 4 rear hot air chamber, 5 front air mesh plate, 6 rear air mesh plate, 7 perforation, 8 front air inlet, 9 front exhaust hole, 10 front hot air collecting bin, 11 radiator, 12 axial flow fan, 13 rear exhaust hole, 14 third hot air source, 15 front hot air source, 16 rear hot air source. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0025] like Figure 1-3 As shown, Figure 1 It is a structural schematic diagram of a specific implementation method of a hot air volume stabilization balance structure of a slice baking machine; Figure 2 It is a structural schematic diagram of another specific implementation method; Figure 3 It is a schematic diagram of the structure of the air-passing mesh plate (front and rear).

[0026] In a specific implementation manner, Figure 1 As shown, a hot air volume stable and balanced structure of a slice roasting machine comprises a slice roasting machine body with a chamber 1 inside, the chamber 1 having a length and a width, a conveying chain plate 2 which can move along the length direction is arranged at the upper position of the chamber 1, the conveying chain plate 2 is provided with tobacco leaves to be dried, the chamber 1 located below the conveying chain plate 2 comprises a front hot air chamber 3 and a rear hot air chamber 4 which are connected and distributed in sequence along the length direction, the front hot air chamber 3 is provided with a front hot air source 15 which extends and is distributed along the length direction of the front hot air chamber 3 and is connected to the front hot air chamber 3 on one side in the width direction, and also comprises a front air passing mesh plate 5 which is obliquely arranged in the front hot air chamber 3, the length of the front air passing mesh plate 5 is not less than the length of the front hot air source 15, and the front air passing mesh plate 5 is provided with a front hot air source 15 which extends and is distributed along the length direction of the front hot air chamber 3 and is connected to the front hot air chamber 3. One end of the mesh plate 5 close to the front hot air source 15 is higher than the height of the front hot air source 15, and the other end extends obliquely downward in the direction away from the front hot air source 15 to the other side of the front hot air chamber 3 in the width direction. The rear hot air chamber 4 is formed with a rear hot air source 16 on one side in the width direction, which is extended and distributed along the length direction of the rear hot air chamber 4 and connected to the rear hot air chamber 4. It also includes a rear air passing mesh plate 6, which is obliquely arranged in the rear hot air chamber 4. The length of the rear air passing mesh plate 6 is not less than the length of the rear hot air source 16. One end of the rear air passing mesh plate 6 close to the rear hot air source 16 is higher than the height of the rear hot air source 16, and the other end extends obliquely downward in the direction away from the rear hot air source 16 to the other side of the rear hot air chamber 4 in the width direction.

[0027] In this specific embodiment, the perforations 7 of the front air-passing mesh plate 5 distributed in the direction away from the front hot air source 15 are arranged in a gradual manner, and the gradual manner is: the farther away from the front hot air source 15, the smaller the perforations and the smaller the spacing between the perforations;

[0028] The arrangement of the perforations 7 of the rear air-passing mesh plate 6 in the direction away from the rear hot air source 16 is gradual, and the gradual arrangement is: the farther away from the rear hot air source 16, the smaller the perforations and the smaller the spacing between the perforations;

[0029] The gradient of the perforations 7 is as follows: the perforations 7 are arranged in rows, and the diameter of the holes in the first row closest to the corresponding hot air source is 7 mm and the spacing is 25 mm, and the aperture diameter and spacing of the holes in the subsequent rows are arranged in a gradient manner with a gradient rate of 0.92;

[0030] The angles between the front air-passing mesh plate 5 and the rear air-passing mesh plate 6 and the bottom wall of the chamber 1 are 5-7°.

[0031] This specific method can achieve a drying degree of 96% for tobacco leaves.

[0032] In a specific implementation manner, the front hot air source 15 and the rear hot air source 16 are arranged opposite to each other in a front-to-back staggered manner along the length direction.

[0033] In a specific embodiment, the slice toasting machine warehouse body is in the shape of a rectangular parallelepiped, and is provided with five front air inlets 8 spaced apart along the length direction thereof at the side wall corresponding to the front hot air chamber 3, forming the front hot air source 15, and the distance between the two farthest apart front air inlets 8 among the five front air inlets 8 forms the length of the front hot air source 15, and is provided with five rear air inlets spaced apart along the length direction thereof at the side wall corresponding to the rear hot air chamber 4, forming the rear hot air source 16, and the distance between the two farthest apart rear air inlets among the five rear air inlets forms the length of the rear hot air source 16.

[0034] In a specific embodiment, the slice toasting machine chamber body is provided with a plurality of front exhaust holes 9 arranged at intervals along its length direction at an upper end corresponding to the front hot air chamber 3, and the front exhaust holes 9 are all connected to the front hot air chamber 3, and the front exhaust holes 9 are located on the other side away from the side where the front hot air source 15 is located, and the slice toasting machine chamber body is provided with a plurality of rear exhaust holes 13 arranged at intervals along its length direction at an upper end corresponding to the rear hot air chamber 4, and the rear exhaust holes 13 are all connected to the rear hot air chamber 4, and the rear exhaust holes 13 are located on the other side away from the side where the rear hot air source 16 is located.

[0035] Among them, a front hot air collecting bin 10 connected to the 5 front air inlets 8 is arranged at the position of the slice toaster bin body corresponding to the 5 front air inlets 8, and a plurality of radiators 11 arranged along the length direction are arranged above the front hot air collecting bin 10, and an axial flow fan 12 is arranged above each radiator 11. The heat generated by the radiator 11 is heat-exchanged with the air blown by the axial flow fan 12 to increase the air temperature and generate hot air, and the generated hot air continues to be blown to the front hot air collecting bin 10.

[0036] In a specific embodiment, a rear hot air collecting bin connected to the five rear air inlets is provided at the positions of the slice toaster bin body corresponding to the five rear air inlets, and a plurality of radiators 11 arranged along the length direction are provided above the rear hot air collecting bin, and an axial flow fan 12 is arranged above each radiator 11. The heat generated by the radiator 11 is heat-exchanged with the air blown by the axial flow fan 12 to increase the air temperature and generate hot air, and the generated hot air continues to be blown to the rear hot air collecting bin.

[0037] like Figure 2 As shown, a third hot air source 14 which is the same as the front hot air source 15 is also arranged behind the rear hot air source 16. The third hot air source 14 and the front hot air source 15 are located on the same side, and a third air flow mesh plate which is the same as the front air flow mesh plate 5 is arranged at the position corresponding to the third hot air source 14.

[0038] The front hot air source 15 and the rear hot air source 16 are arranged on both sides of the slice baking machine and arranged in a front-to-back order. The configuration is exactly the same, and the left and right air inlets (also called two-sided air inlets) are set to solve the problem of uneven baking temperature caused by heat loss due to long air inlet distance. The hot air enters from one end and gradually flows to the other end. During the flow process, part of the hot air flows upward to the baking chamber through the air mesh plate holes, and the remaining hot air continues to flow forward. The further back, the hot air volume gradually decreases and the temperature gradually decreases. In this process, a gradual air duct is used to ensure the problem of gradual change of hot air volume, but the problem of gradual temperature change is still not solved, resulting in different baking effects. The use of left and right air inlets can just neutralize this problem and ultimately ensure uniform baking. That is, when the left end is inlet (front hot air source air inlet), the baking temperature gradually decreases from left to right, and when the right end is inlet (rear hot air source air inlet), the baking temperature gradually decreases from right to left. Through this alternating overlap method, the temperature in the baking chamber is finally neutralized to achieve a uniform and stable effect. The air mesh plates (front and back) are tilted to make the cross section of the air duct gradually narrow (the space gradually becomes smaller) to ensure the gradually decreasing hot air flow speed and pressure in the bin, and the arrangement and size of the perforations are gradually changed. The further back, the smaller the holes and the smaller the spacing. The purpose is to control the air speed and pressure to ensure that the hot air flows evenly to the baking area, fully contacts the tobacco leaves, and completes the baking of the tobacco leaves.

[0039] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hot air volume stabilizing and balancing structure for a slice baking machine, characterized in that: The invention comprises a slice drying machine body with a chamber inside, the chamber having a length and a width, a conveying chain plate capable of moving along the length direction is arranged at an upper position of the chamber, tobacco leaves to be dried are laid on the conveying chain plate, the chamber below the conveying chain plate comprises a front hot air chamber and a rear hot air chamber which are connected and sequentially distributed along the length direction, the front hot air chamber is provided with a front hot air source which extends and is distributed along the length direction of the front hot air chamber and is connected to the front hot air chamber on one side in the width direction, and also comprises a front air passing mesh plate which is obliquely arranged in the front hot air chamber, the length of the front air passing mesh plate is not less than the length of the front hot air source, and the front air passing mesh plate is close to the One end of the front hot air source is higher than the height of the front hot air source, and the other end extends obliquely downward in a direction away from the front hot air source to the other side of the front hot air chamber in the width direction. The rear hot air chamber is formed with a rear hot air source on one side in the width direction, which is extended and distributed along the length direction of the rear hot air chamber and connected to the rear hot air chamber, and also includes a rear air flow mesh plate, which is obliquely arranged in the rear hot air chamber, and the length of the rear air flow mesh plate is not less than the length of the rear hot air source, and one end of the rear air flow mesh plate close to the rear hot air source is higher than the height of the rear hot air source, and the other end extends obliquely downward in a direction away from the rear hot air source to the other side of the rear hot air chamber in the width direction.

2. The hot air volume stabilizing and balancing structure of the slice baking machine according to claim 1 is characterized in that: The perforations of the front air-passing mesh plate distributed in the direction away from the front hot air source are arranged in a gradual manner, and the gradual manner is: the farther away from the front hot air source, the smaller the perforations are and the smaller the spacing between the perforations is; The perforations of the rear air-passing mesh plate distributed in the direction away from the rear hot air source are arranged in a gradual manner, and the gradual manner is: the farther away from the rear hot air source, the smaller the perforations and the smaller the spacing between the perforations; The perforations are arranged in a gradient manner: the perforations are arranged in rows, and the diameter of the holes in the first row closest to the corresponding hot air source is 7 mm and the spacing is 25 mm, and the aperture diameter and spacing of the holes in the subsequent rows are arranged in a gradient manner with a gradient rate of 0.92; The angles between the front air-passing mesh plate and the rear air-passing mesh plate and the bottom wall of the chamber are 5-7°.

3. The hot air volume stabilizing and balancing structure of the slice baking machine according to claim 2 is characterized in that: The front hot air source and the rear hot air source are arranged opposite to each other in a staggered manner in the front and rear direction along the length direction.

4. The hot air volume stabilizing and balancing structure of the slice baking machine according to claim 3 is characterized in that: The slice toasting machine warehouse body is in the shape of a rectangular parallelepiped, and is provided with five front air inlets spaced apart along its length direction at the side wall corresponding to the front hot air chamber of the slice toasting machine warehouse body to form the front hot air source, and the distance between the two farthest apart front air inlets among the five front air inlets forms the length of the front hot air source, and is provided with five rear air inlets spaced apart along its length direction at the side wall corresponding to the rear hot air chamber of the slice toasting machine warehouse body to form the rear hot air source, and the distance between the two farthest apart front air inlets among the five rear air inlets forms the length of the rear hot air source.

5. The hot air volume stabilizing and balancing structure of the slice baking machine according to claim 4 is characterized in that: The upper end of the slice toasting machine bin body corresponding to the front hot air chamber is provided with a plurality of front exhaust holes arranged at intervals along the length direction thereof, the front exhaust holes are all connected to the front hot air chamber, and the front exhaust holes are located on the other side away from the side where the front hot air source is located; the upper end of the slice toasting machine bin body corresponding to the rear hot air chamber is provided with a plurality of rear exhaust holes arranged at intervals along the length direction thereof, the rear exhaust holes are all connected to the rear hot air chamber, and the rear exhaust holes are located on the other side away from the side where the rear hot air source is located.

6. The hot air volume stabilizing and balancing structure of the slice baking machine according to claim 5 is characterized in that: A front hot air collecting bin connected to the five front air inlets is arranged at the positions of the slice toaster bin body corresponding to the five front air inlets, a plurality of radiators arranged along the length direction are arranged above the front hot air collecting bin, an axial flow fan is arranged above each radiator, the heat generated by the radiator is heat exchanged with the air blown by the axial flow fan to increase the air temperature and generate hot air, and the generated hot air continues to be blown to the front hot air collecting bin.

7. The hot air volume stabilizing and balancing structure of the slice baking machine according to claim 6, characterized in that: A rear hot air collecting bin connected to the five rear air inlets is arranged at the positions of the slice toaster bin body corresponding to the five rear air inlets, a plurality of radiators arranged along the length direction are arranged above the rear hot air collecting bin, an axial flow fan is arranged above each radiator, the heat generated by the radiator is heat exchanged with the air blown by the axial flow fan to increase the air temperature and generate hot air, and the generated hot air continues to be blown to the rear hot air collecting bin.

8. The hot air volume stabilizing and balancing structure of the slice baking machine according to claim 2, characterized in that: A third hot air source identical to the front hot air source is also arranged behind the rear hot air source. The third hot air source and the front hot air source are located on the same side, and a third air mesh plate identical to the front air mesh plate is arranged at the position corresponding to the third hot air source.

Images