CN105110012B - A continuous pre-drying conveying system for materials - Google Patents

Abstract

The invention relates to a continuous pre-drying conveying system for materials. A continuous pre-drying conveying system for materials, the system includes a material suction storage system, a dry heating compressed air continuous blowing system, a feed control system and a suction device. The present invention has the following characteristics due to the adoption of the above-mentioned technical scheme: 1. The original manual operation is changed to the current mechanical operation, which greatly reduces the labor load of workers; , to improve the conveying efficiency; 3. The air delivery system can also remove part of the boring dust, making the material cleaner and less impurity content; 4. The fully automatic temperature control in the silo, the air intake control ensures the dryness of the material, The stability of spinning is guaranteed.

Description

A continuous pre-drying conveying system for materials

technical field

The invention relates to a continuous pre-drying conveying system for materials.

Background technique

In the chemical fiber industry, after the cleaned PET bottle flakes are heated and dried by the drum, they are sent to the screw extruder for melting and spinning after extrusion. However, when the heated PET bottle flakes enter the next process, due to the distance It is far away, and because the heating of the drum is intermittent, the continuity of the two processes before and after cannot be achieved, so a large silo is added in the middle process, and the heated material will be in contact with the air during the transportation and storage process. , the moisture will increase again, so it is necessary to keep warm during storage to further reduce the moisture. In addition, after being heated by the drum, we used to manually send the material to the large silo. Because the position of the drum is lower than that of the silo, it is necessary to manually pull the material cart up and down the elevator, which requires a lot of manual labor. Therefore, we have designed a continuous pre-drying conveying system for materials.

Contents of the invention

In order to solve the above technical problems, the object of the present invention is to provide a continuous pre-drying conveying system for materials. This system greatly reduces the labor load of workers, improves the conveying efficiency, ensures the dryness of materials, and ensures the stability of spinning.

In order to achieve the above object, the present invention adopts the following technical solutions:

A continuous pre-drying conveying system for materials, the system includes a material suction storage system, a dry heating compressed air continuous blowing system, a feed control system and a suction device; the feed control system includes multiple drums, quantitative Feeding tank and suction device, each drum outlet is provided with a suction system feed port, the suction system feed port is controlled by a valve control switch, and the suction system feed port passes through the quantitative The feeding tank is connected with the inlet of the air pipe of the material suction device; the material suction device is connected with a pipe distribution device through the air pipe, and the rear end of the pipe distribution device is connected with multiple air pipes; the material suction The storage system includes a plurality of cyclone storage tanks and a storage preheating silo, and a plurality of air pipes are respectively connected to a plurality of cyclone storage tanks, and the plurality of cyclone storage tanks are provided with air outlets, and the air outlets are connected to the suction air Device; the storage preheating bin is set under the cyclone storage tank, and the top of the storage preheating bin is provided with an air outlet. The bottom of the storage preheating bin is an inclined conical mouth, which is connected to the screw extrusion below. machine, the middle part of the storage preheating bin is provided with a hot blowing device, and the hot blowing device is connected to the dry heating compressed air continuous blowing system.

As a preference, the hot blowing device includes an annular air outlet pipe and a trumpet-shaped air outlet. The upper part of the storage preheating bin is a cylindrical bin body, and the inner wall of the lower part of the cylindrical bin body is equipped with an annular slanted baffle. The air pipe is set in the lower gap of the annular slanted baffle, and the annular air outlet pipe is provided with multiple air outlets downwards. The annular air outlet pipe extends out of the cylindrical warehouse body from an air outlet pipe, and the trumpet-shaped air outlet is set in the center of the cylindrical warehouse body. , the trumpet-shaped air outlet opens downward, and is connected with the trumpet-shaped air outlet by an air outlet pipe, and the two air outlet pipes are merged into one place and connected to the dry heating compressed air continuous blowing system through a valve.

As preferably, the suction device includes a suction pipe, a three-way pipe and a suction device. The left side of the suction pipe is a suction port, and a valve is arranged on the suction port. The three-way pipe is arranged on the suction pipe, and the top of the three-way pipe It is the inlet of the air duct, and a control valve is arranged on the inlet of the air duct, and the quantitative feeding tank is arranged above the inlet of the air duct.

As preferably, the quantitative feeding tank includes a feeding bin, a mobile bracket and a bin frame, the mobile bracket is provided with rollers, the feeding bin is arranged on the mobile bracket, and the feeding bin is a lower oblique opening, and the outlet The size of the material opening is the same as that of the air duct inlet. The bin frame is set in the middle of the mobile bracket. One end of the bin frame is hinged on one side of the mobile bracket. There is a circular frame in the middle, which is set outside the feeding bin and has a The handle sticks out to the other side.

As a preference, the left side of the pipe distribution device is a single feed inlet, the right side is a plurality of outlets, and the middle is a rotating distribution pipe, a central rotating shaft is welded on the rotating distribution pipe, and the rotating distribution pipe and The two ends of the central rotating shaft are respectively set on the fixed bracket and rotate around the center respectively. A driven gear is fixed on the rotating distribution pipe, and a supporting gear is corresponding to the upper part of the driven gear. The supporting gear is connected with the motor, and the motor drives the supporting gear. , to drive the rotating distribution pipe to rotate, and stop when it rotates to the corresponding discharge port, so as to realize the conversion of multiple silos.

As a preference, the cyclone storage tank includes a tank body and a tilting bin, the tilting bin is arranged at the lower part of the tank body, and the tilting bin is provided with a gate valve connected to the inlet of the storage preheating bin, and the air outlet Set in the center of the tank.

As preferably, the air suction device includes an air distribution cylinder, a cyclone dust removal device, a filter dust removal device and a Roots blower, and the air distribution cylinder is connected to the air outlet through a plurality of air pipes. The back end is connected to the cyclone dust removal device, the back end of the cyclone dust removal device is connected to the filter dust removal device, and the back end of the filter dust removal device is connected to the Roots blower.

As a preference, the dry heating compressed air continuous blowing system includes an air compressor, an air cooler air tank, a cold dryer, an oil filter device, a circulation filter, an even air distribution cylinder and a flow regulating device connected in sequence. The pipeline at the rear end of the adjusting device is provided with a radiator for heating the air, and after the air is heated by the radiator, the pipeline is connected to the hot blowing device.

Preferably, the system also includes a steam heating system, the steam heating system includes a steam inlet connected in sequence, a pressure regulating valve group and a steam distribution cylinder, the steam distribution cylinder evenly distributes the steam to each radiator, each Radiator connections are provided with steam traps. Preferably, the storage preheating bin is provided with a thermometer, and the thermometer feeds back signals to the regulating valve group to control the air temperature in real time.

The present invention has the following characteristics owing to adopting above-mentioned technical scheme:

1. The original manual operation has been changed to the current mechanical operation, which greatly reduces the labor load of workers;

2. It used to be intermittent manual feeding, but now it is automatic continuous air feeding to improve the conveying efficiency;

3. The air delivery system can also remove part of the dust in the boring, making the material cleaner and less impurity content;

4. Fully automatic temperature control in the silo and air intake control ensure the dryness of the material and the stability of spinning.

Description of drawings

FIG. 1 is a schematic diagram of the three-dimensional structure of the system of the present invention.

Fig. 2 is a schematic diagram of the system structure of the present invention.

Fig. 3 is a structural schematic diagram of the material suction storage system and the suction device.

Fig. 4 is a schematic structural view of the pipeline distribution device.

Fig. 5 is a structural schematic diagram of a cyclone storage tank.

Fig. 6 is a schematic structural view of the hot blowing device.

Fig. 7 is a schematic structural diagram of the feed control system.

Figure 8 and Figure 9 are structural schematic diagrams of the quantitative feeding tank.

Figure 10 is a schematic structural view of the steam heating system.

Fig. 11 is a structural schematic diagram of a continuous blowing system for drying and heating compressed air.

Detailed ways

The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings.

A continuous pre-drying conveying system for materials as shown in Figure 1 and Figure 2, the system includes a material suction and storage system 1, a steam heating system 2, a drying and heating compressed air continuous blowing system 3, a feed control system 4 and suction wind device. As shown in Figure 7, the feed control system 4 includes a plurality of drums 33, quantitative feeding tanks 32 and suction devices 31, each drum outlet is provided with a suction system feeding port 5, suction The feed inlet 5 of the feeding system is controlled by a valve control switch, which can independently control any suction port for suction operation. The lower part of the suction system feed port 5 is connected to the air duct feed port 36 of the suction device 31 through the quantitative feeding tank 32 . The material suction device 31 is connected with a pipe distribution device 6 through an air pipe, and a plurality of air pipes are connected to the rear end of the pipe distribution device 6 . As shown in Figure 3, the described material suction storage system 1 includes a plurality of cyclone storage tanks 10 and a storage preheating bin 8, and a plurality of air ducts are respectively connected to a plurality of cyclone storage tanks 10, and a plurality of cyclone storage tanks 10 are connected to each other. The tanks 10 are all provided with air outlets 24, and the air outlets 24 are connected to the air suction device. As shown in Figure 3, the air suction device includes an air distribution cylinder 11, a cyclone dust removal device 12, a filter dust removal device 13 and a Roots blower 14, and the air distribution cylinder 11 is connected to the air outlet 24 through a plurality of air pipes , the rear end of the even air distribution cylinder 11 is connected to the cyclone dust removal device 12, the rear end of the cyclone dust removal device 12 is connected to the filter dust removal device 13, and the rear end of the filter dust removal device 13 is connected to the Roots blower 14. As shown in Figure 2, a storage preheating bin 8 is arranged below the cyclone storage tank 10, and an air outlet is arranged on the top of the storage preheating bin 8, and the bottom of the storage preheating bin 8 is an inclined conical mouth 28, which is inclined. The conical mouth 28 is connected to the screw extruder 7 below, and the middle part of the storage and preheating bin 8 is provided with a hot blowing device, which is connected to the continuous blowing system 3 of dry heating compressed air.

As shown in Fig. 8 and Fig. 9, the described suction device 31 comprises a suction duct, a three-way pipe 35 and a suction device, and the suction pipe

The left side of the road is the air suction port 34, a valve is arranged on the air suction port 34, the three-way pipe 35 is arranged on the air suction pipe, the top of the three-way pipe 35 is the air pipe feed port 36, and the air pipe feed port 36 is provided with Control the valve, and the quantitative feeding tank 32 is arranged above the inlet 36 of the air duct. When one drum is heated, close the other valves, open the suction valve under the drum, push the quantitative feeding tank 32 to the top of the feeding port of the suction device 31, and the material flows out from the drum and falls into the quantitative feeding tank 32, and then control the falling speed of the material through the feeding tank for quantitative delivery. Considering that it is impossible for each suction port to carry out suction simultaneously, it is not necessary to set a quantitative feeding tank 32 at each suction port, so this feeding tank is designed to be movable, and which feeding port suction is moved to which location. As shown in Fig. 8 and Fig. 9, the quantitative feeding tank 32 includes a feeding bin 37, a mobile bracket 38 and a bin frame 39, the mobile bracket 38 is provided with rollers, and the feeding bin 37 is arranged on the mobile bracket 38 , the feeding bin 37 is a bottom sloping bin, the size of the discharge port is the same as that of the air duct inlet 36, and a certain degree of flatness must be guaranteed. When the feeding bin is placed above the inlet, it is guaranteed to have a good Excellent airtightness, no air leakage or material leakage. The storage frame 39 is arranged in the middle of the mobile bracket 38, and one end of the storage frame 39 is hingedly arranged on one side of the mobile bracket 38, and the middle is a circular frame, which is placed outside the feeding bin, and a handle extends out from the other side . When a suction port is finished sucking, the handle is manually lifted, because the frame is placed outside the silo, when the bin rack 39 is tilted, because the left side is a fixed hinge, so when the right side is raised, the overall center height It has just risen, so that the feeding bin 37 is lifted to realize the separation from the feeding port, and then the bin frame 39 is blocked, and then the whole quantitative feeding device can be pushed to move to another suction port. After another suction port is reached, the bin rack 39 is put down again, and the feeding bin 37 is allowed to sink until the bottom of the bin is in sealing contact with the inlet of the air duct. Because the air volume of the fan is fixed, when there is only one suction port for suction, the opening of the valve can be increased, the air intake volume can be increased, and the feed volume can be increased at the same time, so as to realize rapid suction. If two or more suction ports carry out simultaneous suction and delivery, an appropriate amount of small valve opening, small air intake and feeding volume can realize simultaneous delivery of multiple drums. Because the sucked material will enter multiple different silos, a pipeline distribution device 6 needs to be erected in the middle of the air duct, as shown in Figure 4, the left side of the pipeline distribution device 6 is a single feed inlet 15, and the right side It is a plurality of discharge ports 18, the center is a rotating distribution pipe 17, a central rotating shaft 20 is welded on the rotating distributing pipe 17, and the two ends of the rotating distributing pipe 17 and the central rotating shaft 20 are arranged on the fixed bracket respectively, and Respectively rotate around the center, a driven gear is fixed on the rotating distribution pipe 17, a supporting gear 16 is corresponding to the top of the driven gear, the supporting gear 16 is connected with the motor, and the motor drives the supporting gear 16, driving the rotating distribution pipe 17 to rotate, when rotating When it arrives at the corresponding discharge port 18, it stops to realize the conversion of a plurality of feed bins. Before entering the large silo, a wind removal process is required, so a cyclone storage tank 10 is added to the upper part of the storage preheating silo 3, as shown in Figure 5, the cyclone storage tank 10 includes a tank body and an inclined warehouse 22 The tilting bin 22 is arranged at the lower part of the tank body, and the tilting bin 22 is provided with a gate valve 23 connected to the inlet of the storage preheating bunker 8, and the air outlet 24 is arranged at the center of the tank body. The material and the wind enter the cyclone storage tank 10 from the material inlet, and the wind is transported by rotation after entering the tank, because the lower part of the tank is an inclined warehouse 22, and the volume of the tank increases, the speed of the wind and material in the tank will be very low, and gradually During the sinking process, because the specific gravity of the material is relatively heavy, the material and the wind will be separated. Because the wind speed decreases, the material will slowly slide down the inclined surface under the action of gravity, and the wind will still have a certain The speed will rotate towards the center under the action of inclination, and the air outlet 24 is installed in the center of the tank body, so that the wind goes out from the top return air pipe, realizing the separation of material and gas. In addition, considering the weight of materials that can be loaded in a drum, we designed the volume of the material tank to be larger than the volume of the drum. When the material in a drum is delivered, the air delivery system is suspended, and then the bottom of the storage tank is opened. Slider valve 23, material is put into the storage preheating feed bin 8 below. As shown in Figure 6, the hot blowing device includes an annular air outlet pipe 27 and a trumpet-shaped air outlet 30. The upper part of the storage and preheating bin 8 is a cylindrical bin body, and the inner wall of the lower part of the cylindrical bin body is equipped with an annular Inclined baffle plate 26, annular air outlet pipe 27 is arranged at the lower gap of annular inclined baffle plate 26, annular air outlet pipe 27 is provided with a plurality of air outlets downwards, and annular air outlet pipe 27 stretches out of the cylindrical warehouse body by an air outlet pipe, The trumpet-shaped air outlet 30 is arranged at the center of the cylindrical warehouse body, and the horn-shaped air outlet 30 opens downwards, and is connected with the trumpet-shaped air outlet 30 by an air outlet pipeline. The dry heating compressed air continuous blowing system 3 described above. When the material is stored in the silo, because there is a large gap under the trumpet-shaped air outlet 30 and the annular sloping plate 26 inside the silo, when the hot air valve is opened, the hot air will come out from these air outlets, and in the accumulated The flow of materials plays the role of heating and dehumidification, because there is an air outlet on the top, and the airflow direction is from bottom to top.

As shown in Figure 11, the dry heating compressed air continuous blowing system 3 includes an air compressor 46, an air cooler 47, an air tank 48, a cold dryer 49, an oil filter device 50, a circulation filter 51, and an even air compressor connected in sequence. Sub-cylinder 52 and flow regulator 53, the pipeline at the rear end of flow regulator 53 is provided with a radiator 44 for heating the air, and the air is heated by the radiator 44 and the pipeline is connected to the hot blowing device. As shown in Figure 10, the steam heating system 2 includes a steam inlet 40 connected in sequence, a pressure regulating valve group 41 and a steam distribution cylinder 42, and the steam distribution cylinder 42 evenly distributes the steam to each radiator 44, each A drain valve group 45 is connected to each radiator 44 . And a thermometer 43 is arranged in the storage preheating bin 8, and the thermometer 43 feeds back signals to the regulating valve group 41 to control the air temperature in real time.

In Fig. 11, the air compressor 46 needs to be removed because the compressed air has higher humidity, higher temperature, and more impurities such as dust and oil, and the air after coming out first enters the air cooler 47 for cooling. , and then into the large gas storage tank 48, because the volume is large, the gas has almost no fluidity inside, and the moisture will slowly sink under the action of gravity, which plays a role in removing moisture initially and can stabilize the airflow Then enter a coarse oil filter device 50 to remove a part of large particle oil impurities, and then enter a cold dryer 49 to completely remove the heavy moisture in the air, and then enter two fine oil filter devices , completely filter out the oil impurities, and then enter the circulating self-cleaning filter 51 to remove the remaining impurities, and then pass through a uniform air distribution cylinder 52 to evenly distribute multiple air pipes to each large silo through the air distribution cylinder. A flow meter 53 is installed in the air pipe, and the feedback signal is sent to the control valve to control the air volume, and then enters a radiator, where the heat of the steam is used to heat the air to reach the set temperature, and finally it is blown into the silo , heating, heat preservation and dehumidification of materials. As shown in Figure 10, the steam is connected from the main pipeline, enters the steam heating system, passes through a group of pressure regulating valve groups 41, and then enters a uniform steam distribution cylinder 42 to evenly distribute the steam to each radiator 44, After the heat conduction to the air in the radiator, it becomes cooling water, and the water is discharged by the steam trap group 45 . In the figure, the feedback signal of the thermometer 43 on the silo is used to control the air temperature in real time to the regulating valve group 41 to ensure the stability of the temperature of the silo.

Claims (8)

1. A continuous pre-drying conveying system for materials, characterized in that the system includes a material suction storage system (1), a dry heating compressed air continuous blowing system (3), a feed control system (4) and a suction device ; The feed control system (4) includes a plurality of drums (33), quantitative feeding tanks (32) and suction devices (31), and each drum outlet is provided with a suction system feeding port (5), the feeding port (5) of the suction system is controlled by a valve control switch respectively, and the quantitative feeding tank (32) and the suction device (31) pass under the feeding port (5) of the suction system. The air pipe feed inlets (36) are connected; the suction device (31) is connected with a pipe distribution device (6) through the air pipe, and the rear end of the pipe distribution device (6) is connected to multiple air pipes; The material suction storage system (1) includes multiple cyclone storage tanks (10) and storage preheating silos (8), multiple air pipes are respectively connected to multiple cyclone storage tanks (10), and multiple cyclone storage tanks (10) The tanks (10) are provided with air outlets (24), and the air outlets (24) are connected to the above-mentioned suction device; the storage preheating silo (8) is arranged under the cyclone storage tank (10), and the storage preheating silo The top of (8) is provided with an air outlet, and the bottom of the storage preheating silo (8) is an inclined conical mouth (28), which is connected to the screw extruder (7) below to store the preheating The middle part of the hot material bin (8) is equipped with a hot blowing device, which is connected to the dry heating compressed air continuous blowing system (3); the hot blowing device includes an annular air outlet pipe (27) and a trumpet-shaped air outlet (30), the upper part of the storage preheating bin (8) is a cylindrical bin body, the inner wall of the lower part of the cylindrical bin body is equipped with an annular slanted baffle (26), and the annular air outlet pipe (27) is arranged on the annular slanted baffle At the lower part of the plate (26), the annular air outlet pipe (27) is provided with multiple air outlets downwards. The annular air outlet pipe (27) extends out of the cylindrical warehouse body from an air outlet pipe, and the trumpet-shaped air outlet (30) is set In the center of the cylinder, the trumpet-shaped air outlet (30) opens downward, and is connected with the trumpet-shaped air outlet (30) by an air outlet pipe. Drying and heating compressed air continuous blowing system (3); the suction device (31) includes a suction pipe, a three-way pipe (35) and a suction device, the left side of the suction pipe is the suction port (34), and the top of the suction port (34) A valve is provided, the three-way pipe (35) is arranged on the suction pipe, the top of the three-way pipe (35) is the air pipe inlet (36), and the air pipe inlet (36) is provided with a control valve, The quantitative feeding tank (32) is arranged above the air duct inlet (36). 2. A continuous pre-drying conveying system for materials according to claim 1, characterized in that: the quantitative feeding tank (32) includes a feeding bin (37), a moving bracket (38) and a bin rack (39) , the moving bracket (38) is provided with rollers, the feeding bin (37) is set on the moving bracket (38), the feeding bin (37) is a lower oblique bin, the size of the outlet and the inlet of the air duct (36) are consistent, the lifting frame (39) is arranged in the middle of the mobile bracket (38), and one end of the lifting frame (39) is hingedly arranged on one side of the moving bracket (38), and the middle is a circular frame, which is set on the feeding Outside the bin, and a handle protruding from the other side. 3. A continuous pre-drying conveying system for materials according to claim 1, characterized in that: the left side of the pipeline distribution device (6) is a single material inlet (15), and the right side is a plurality of material outlets ( 18), the middle is a rotating distribution pipe (17), and a central rotating shaft (20) is welded on the rotating distributing pipe (17), and the two ends of the rotating distributing pipe (17) and the central rotating shaft (20) are respectively arranged on fixed on the bracket, and rotate around the center respectively, a driven gear is fixed on the rotating distribution pipe (17), and a supporting gear (16) is corresponding to the top of the driven gear, and the supporting gear (16) is connected with the motor, and the motor drives the supporting gear (16), drives the rotating distribution pipe (17) to rotate, and stops when it rotates to the corresponding discharge port (18), so as to realize the conversion of multiple silos. 4. A continuous pre-drying conveying system for materials according to claim 1, characterized in that: the cyclone storage tank (10) includes a tank body and an inclined bin (22), and the inclined bin (22) is arranged at the lower part of the tank body , the tilting bin (22) is provided with a flapper valve (23) connected to the inlet of the storage preheating bin (8), and the air outlet (24) is arranged in the center of the tank. 5. A continuous pre-drying conveying system for materials according to claim 1, characterized in that: the air suction device includes an air distribution cylinder (11), a cyclone dust removal device (12), a filter dust removal device (13) and a The fan (14), the air distribution cylinder (11) is connected to the air outlet (24) through a plurality of air pipes, the rear end of the distribution cylinder (11) is connected to the cyclone dust removal device (12), and the cyclone dust removal The rear end of the device (12) is connected to the filter and dust removal device (13), and the rear end of the filter and dust removal device (13) is connected to the Roots blower (14). 6. A continuous pre-drying conveying system for materials according to claim 1, characterized in that: the drying and heating compressed air continuous blowing system (3) includes an air compressor (46), an air cooler (47) connected in sequence ), air tank (48), cold dryer (49), oil filter device (50), circulation filter (51), air distribution cylinder (52) and flow regulating device (53), flow regulating device (53) The pipeline at the rear end is provided with a radiator (44) for heating the air, and after the air is heated by the radiator (44), the pipeline is connected to the hot blowing device. 7. A continuous pre-drying conveying system for materials according to claim 6, characterized in that: the system also includes a steam heating system (2), and the steam heating system (2) includes steam inlets (40) connected in sequence , the pressure regulating valve group (41) and the steam distribution cylinder (42), the steam distribution cylinder (42) evenly distributes the steam to each radiator (44), and each radiator (44) is connected with a drain valve block (45). 8. A continuous pre-drying conveying system for materials according to claim 7, characterized in that: the storage preheating bin (8) is provided with a thermometer (43), and the thermometer (43) feeds back signals to the regulating valve group (41 ) to control the air temperature in real time.