The pressure head device of a special re-pressing equipment for threshing and redrying

Abstract

The present invention discloses a pressure head device for a special double-pressing device in tobacco threshing and redrying, which includes a pressure head body with a cavity. The pressure head body is connected with a vacuum pumping pipeline communicated with its cavity. A sampler, a temperature and humidity sensor, and an oil cylinder connecting seat are arranged on the pressure head body. The oil cylinder connecting seat is connected with the piston rod of the oil cylinder in the double-pressing device. A plurality of extrusion suction holes are formed on the extrusion surface of the pressure head body. A plurality of purging pipes are arranged in the pressure head body. One end of each purging pipe is a compressed air back-blowing port, and the other end is a compressed air back-blowing connection port. The compressed air back-blowing connection port is connected with a sub-electric control quick pulse air valve through a pipeline. Each sub-electric control quick pulse air valve is connected with a main electric control quick pulse air valve through a pipeline. The main electric control quick pulse air valve is connected with a compressed air tank. Side suction holes are formed on the outer side of the pressure head body. The present invention can accurately reduce the temperature and moisture content of each box of tobacco slices in the double-pressing link of tobacco slice packing, and reduce the occurrence of condensation phenomenon.

Description

Technical Field

[0001] The invention belongs to the technical field of equipment in the tobacco threshing, redrying, recompressing and packing process, and relates to a pressure head device of a special recompressing device for tobacco threshing and redrying. Background Art

[0002] In the tobacco threshing and redrying production process of tobacco enterprises, deviation values such as the temperature and moisture of cut tobacco during the finished product packing process directly affect the quality of natural aging of cut tobacco. At present, the cut tobacco packing process generally includes a pre-pressing and a recompressing link. The pre-pressing link only preliminarily extrudes and forms the cut tobacco, and the recompressing link ensures meeting the total packing weight, extruding the tobacco blank into shape and packing, without involving the control of the temperature and moisture of each box of cut tobacco. During the negative pressure process, broken tobacco flakes are extremely easy to block the air extraction holes of the pressure head, resulting in relatively high moisture and temperature in the tobacco blank, prone to condensation phenomenon, and difficult to meet the requirements of storage, transportation, etc. Summary of the Invention

[0003] The purpose of the invention is to provide a pressure head device of a special recompressing device for tobacco threshing and redrying, which can accurately reduce the temperature and moisture of each box of cut tobacco during the recompressing link of cut tobacco packing, and reduce the occurrence of condensation phenomenon.

[0004] The technical solution adopted by the invention is that a pressure head device of a special recompressing device for tobacco threshing and redrying includes a pressure head body with a cavity. The pressure head body is connected with a vacuum extraction pipeline communicated with its cavity. The pressure head body is respectively connected with a sampler and a temperature and humidity sensor through a sampler fixing seat and a temperature and humidity sensor mounting seat arranged thereon. The pressure head body is also provided with an oil cylinder connecting seat, and the oil cylinder connecting seat is connected with the piston rod of the oil cylinder in the recompressing device. A plurality of extrusion air suction holes are formed on the extrusion surface of the pressure head body, and the cavity of the pressure head body is communicated with the outside through the extrusion air suction holes. A plurality of purge pipes corresponding to the extrusion air suction holes one by one are arranged in the pressure head body. One end of the purge pipe is a compressed air back-blowing port, the compressed air back-blowing port is close to and opposite to the extrusion air suction hole, and the other end of the purge pipe is a compressed air back-blowing connection port. The compressed air back-blowing connection port extends out of the pressure head body and is connected with a sub-electronic control quick pulse air valve through a pipeline. Each sub-electronic control quick pulse air valve is connected with a main electronic control quick pulse air valve through a pipeline. The main electronic control quick pulse air valve is connected with a compressed air tank, and side air suction holes are formed on the outside of the pressure head body.

[0005] The characteristics of the invention also lie in that

[0006] The indenter body includes an upper pressing plate and a lower pressing plate that are fixedly sealed by buckling up and down. A cavity is formed inside the indenter body. The oil cylinder connecting seat and the vacuum extraction pipeline are both arranged on the upper pressing plate. The upper pressing plate is fixedly connected to the piston rod of the oil cylinder through the oil cylinder connecting seat. The extrusion suction holes are all arranged on the lower pressing plate, and the extrusion suction holes correspond to the cavity of the indenter body in position. The lower pressing plate is fixedly connected to a sampler and a temperature and humidity sensor through a sampler fixing seat and a temperature and humidity sensor mounting seat respectively.

[0007] A plurality of side suction holes are evenly arranged, and the positions of the side suction holes correspond to the cavity of the indenter body. A side suction filter sheet is arranged at each side suction hole.

[0008] A bottom filter sheet is arranged at each extrusion suction hole, and the compressed air back-blowing port of the purging pipe is located above the bottom filter sheet.

[0009] An inspection opening is formed on the upper pressing plate, and a cover plate is fixed at the inspection opening through bolts.

[0010] The beneficial effects of the present invention are as follows:

[0011] The indenter device of the present invention for a special re-pressing device in tobacco leaf threshing and redrying has a simple structure and is convenient for installation and use; without affecting the existing production rhythm and functions, it can realize smooth temperature and humidity strong exchange in the negative pressure link, thereby reducing the temperature and moisture of each box of tobacco leaves, reducing the occurrence of condensation phenomenon, improving product quality, having high re-pressing efficiency, and reducing the production cost of enterprises. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the indenter device of the present invention for a special re-pressing device in tobacco leaf threshing and redrying;

[0013] Figure 2 is a bottom view of the indenter device of the present invention for a special re-pressing device in tobacco leaf threshing and redrying;

[0014] Figure 3 is a partial side-sectional view of the indenter device of the present invention for a special re-pressing device in tobacco leaf threshing and redrying.

[0015] In the figure, 1. indenter body, 2. vacuum extraction pipeline, 3. oil cylinder connecting seat, 4. sampler, 5. temperature and humidity sensor, 6. extrusion suction hole, 7. purging pipe, 8. compressed air back-blowing port, 9. compressed air back-blowing connection port, 10. side suction hole, 11. upper pressing plate, 12. lower pressing plate, 13. side suction filter sheet, 14. bottom filter sheet, 15. cover plate, 16. directional connecting seat. Detailed Embodiments

[0016] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0017] The pressing head device of a special re-pressing equipment for threshing and redrying in the present invention is as follows Figure 1-2 shown, and it includes a pressing head body 1 with a cavity. The pressing head body 1 includes an upper pressing plate 11 and a lower pressing plate 12 which are fastened, fixed and sealed up and down. An oil cylinder connecting seat 3, a vacuum pumping pipeline 2 and two or more directional connecting seats 16 are arranged on the upper pressing plate 11. The upper pressing plate 11 is fixedly connected with the piston rod of the oil cylinder in the re-pressing equipment through the oil cylinder connecting seat 3. The vacuum pumping pipeline 2 is communicated with the cavity of the pressing head body 1, and a negative pressure pump is connected to the vacuum pumping pipeline 2. The directional connecting seat 16 is fixedly connected with the guide rod for the up and down movement of the pressing head body 1 in the re-pressing equipment, ensuring that the pressing head body 1 moves vertically when extruding tobacco leaves. The lower pressing plate 12 is the extrusion surface of the pressing head body 1, and a plurality of extrusion suction holes 6 are arranged on the lower pressing plate 12. The extrusion suction holes 6 correspond to the position of the cavity of the pressing head body 1, and the cavity of the pressing head body 1 is communicated with the outside through the extrusion suction holes 6. A sampler fixing seat and a temperature and humidity sensor mounting seat are arranged on the pressing head body 1. The lower pressing plate 12 is fixedly connected with the temperature and humidity sensor 5 through the temperature and humidity sensor mounting seat, and the lower pressing plate 12 is fixedly connected with the sampler 4 through the sampler fixing seat;

[0018] A plurality of purging pipes 7 corresponding to the extrusion suction holes 6 one by one are arranged in the pressing head body 1, as Figure 3 shown. One end of the purging pipe 7 is a compressed air back-blowing port 8, and the compressed air back-blowing port 8 is close to and opposite to the extrusion suction hole 6. The other end of the purging pipe 7 is a compressed air back-blowing connection port 9. The compressed air back-blowing connection port 9 extends out of the pressing head body 1 and is connected with a sub-electric control quick pulse air valve through a pipeline. Each sub-electric control quick pulse air valve is connected with a main electric control quick pulse air valve through a pipeline, and the main electric control quick pulse air valve is connected with a compressed air tank. A side suction hole 10 is opened on the outer side of the pressing head body 1.

[0019] A plurality of side suction holes 10 are evenly arranged, and a side suction filter sheet 13 is arranged at each side suction hole 10. The side suction hole 10 is used for sucking air from the side of the pressing head body 1. When the pressing head body 1 extrudes tobacco leaves, compared with only sucking gas from the extrusion surface, the dehumidification and cooling speed of the tobacco leaves is accelerated. At the same time, the setting of the side suction filter sheet 13 avoids sundries from being sucked into the pressing head body 1, ensuring the long-term and effective operation of the entire re-pressing equipment.

[0020] A bottom filter sheet 14 is arranged at each extrusion suction hole 6, and the compressed air back-blowing port 8 of the purging pipe 7 is located above the bottom filter sheet 14. Since the extrusion suction hole 6 is located on the extrusion surface, it is very easy to be blocked by tobacco leaf fragments during extrusion. Therefore, after extrusion, the main electric control quick pulse air valve and the sub-electric control quick pulse air valve can be opened, so that the gas in the compressed air tank blows towards the extrusion suction hole 6 through the purging pipe 7 to remove the tobacco leaf fragments at the extrusion suction hole 6.

[0021] An inspection opening is provided on the upper pressing plate 11, and a cover plate 15 is fixed by bolts at the inspection opening. The cover plate 15 can be opened to regularly inspect the inside of the press head body 1.

[0022] The working principle of the press head device of the special re-pressing equipment for threshing and redrying in the present invention is specifically as follows:

[0023] Connect the oil cylinder connecting seat 3 fixedly to the piston rod of the oil cylinder that drives the press head device to extrude in the re-pressing equipment, and connect the directional connecting seat 16 fixedly to the guide rod for the up and down movement of the press head body 1 in the re-pressing equipment.

[0024] When the press head device of the present invention performs re-pressing, start the oil cylinder to drive the press head body 1 to extrude the tobacco leaves downward under the action of the guide rod, and start the negative pressure pump. When the lower pressing plate 12 (i.e., the extrusion surface) of the press head body 1 contacts the tobacco leaves, the oil cylinder and the negative pressure pump continue to work. The sampler 4 can sample the tobacco leaves during the downward pressing process of the press head body 1. The press head body compresses and reduces the gap of the tobacco leaves, discharges part of the air inside the tobacco leaves. At the same time, part of the air inside the tobacco leaves is drawn out through the extrusion suction holes 6 and the side suction holes 10, sequentially through the cavity of the press head body 1, the vacuum pumping pipeline 2, and the negative pressure pump. The re-pressing and air extraction rapidly reduce the temperature and humidity of the tobacco leaves. When the temperature and humidity data collected by the temperature and humidity sensor 5 reach the target parameters, the negative pressure pump stops running, the piston rod of the oil cylinder contracts and resets, and the press head body 1 lifts upward, enabling subsequent operations on the pressed tobacco billets.

[0025] During the extrusion process of the press head body 1, the extrusion suction holes 6 are extremely easy to be blocked by tobacco leaf fragments. After extrusion, the main electric control quick pulse air valve and the sub-electric control quick pulse air valve can be opened, so that the gas in the compressed air tank is blown towards the extrusion suction holes 6 through the purging pipe 7 to remove the tobacco leaf fragments at the extrusion suction holes 6, which can ensure the normal progress of the next extrusion, and also ensure the high efficiency of the dehumidification and cooling of the tobacco leaves during extrusion all the time.

Claims

1. The pressing head device of a special re-pressing equipment for threshing and redrying, characterized in that, it includes a pressing head body (1) with a cavity. The pressing head body (1) is connected with a vacuum pumping pipeline (2) communicated with its cavity. The pressing head body (1) is respectively connected with a sampler (4) and a temperature and humidity sensor (5) through a sampler fixing seat and a temperature and humidity sensor mounting seat arranged thereon. The pressing head body (1) is also provided with an oil cylinder connecting seat (3). The oil cylinder connecting seat (3) is connected with the piston rod of the oil cylinder in the re-pressing equipment. A plurality of extrusion suction holes (6) are opened on the extrusion surface of the pressing head body (1). The cavity of the pressing head body (1) is communicated with the outside through the extrusion suction holes (6). A plurality of purging pipes (7) corresponding to the extrusion suction holes (6) one by one are arranged in the pressing head body (1). A bottom filter sheet (14) is arranged at each extrusion suction hole (6). The compressed air back-blowing port (8) of the purging pipe (7) is located above the bottom filter sheet (14). One end of the purging pipe (7) is the compressed air back-blowing port (8). The compressed air back-blowing port (8) is close to and opposite to the extrusion suction hole (6). The other end of the purging pipe (7) is a compressed air back-blowing connection port (9). The compressed air back-blowing connection port (9) extends out of the pressing head body (1) and is connected with a sub-electronic control quick pulse air valve through a pipeline. Each sub-electronic control quick pulse air valve is connected with a main electronic control quick pulse air valve through a pipeline. The main electronic control quick pulse air valve is connected with a compressed air tank. Side suction holes (10) are opened on the outer side of the pressing head body (1). A plurality of side suction holes (10) are evenly arranged, and the positions of the side suction holes (10) correspond to the cavity of the pressing head body (1). A side suction filter sheet (13) is arranged at each side suction hole (10).

2. The pressing head device of a special re-pressing equipment for threshing and redrying according to claim 1, characterized in that, the pressing head body (1) includes an upper pressing plate (11) and a lower pressing plate (12) which are buckled, fixed and sealed up and down. A cavity is formed inside the pressing head body (1). The oil cylinder connecting seat (3) and the vacuum pumping pipeline (2) are both arranged on the upper pressing plate (11). The upper pressing plate (11) is fixedly connected with the piston rod of the oil cylinder through the oil cylinder connecting seat (3). The extrusion suction holes (6) are all arranged on the lower pressing plate (12). The extrusion suction holes (6) correspond to the position of the cavity of the pressing head body (1). The lower pressing plate (12) is respectively fixedly connected with the sampler (4) and the temperature and humidity sensor (5) through a sampler fixing seat and a temperature and humidity sensor mounting seat.

3. The pressing head device of a special re-pressing equipment for threshing and redrying according to claim 2, characterized in that, a maintenance opening is opened on the upper pressing plate (11), and a cover plate (15) is fixed at the maintenance opening through bolts.

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