Automatic control device for discharging bin door of rotary cylinder type aging drum

Abstract

An automatic control device for a discharge bin gate of a rotary cylinder type aging drum relates to the technical field of viscose fiber production and is characterized in that a discharge bin gate assembly is arranged at the outlet end of a rotary drum and connected with an actuator through a transmission mechanism, and the actuator is connected with a numerical control unit through a valve positioner; the digital controller obtains the viscosity information of alkali cellulose copper ammonia in the rotary drum, controls the opening and closing actions of the valve positioner, drives the actuator to rotate at a corresponding angle, and controls the opening and closing of the discharge bin door assembly through the transmission mechanism; and the alkali cellulose in the rotary drum is conveyed to the next process through the conveying belt. The manual output control function of the digital controller is utilized, the output of the valve positioner is controlled to drive the actuator to act, then the transmission main shaft and the main shaft are driven to rotate, the corresponding fan-shaped material doors rotate at the same angle, and the opening and closing degree of the discharging material door is controlled. According to the utility model, manual operation is cancelled, the labor cost is reduced, remote monitoring and accurate control are realized, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of viscose fiber production, in particular to an automatic control device for the discharge bin door of a rotary cylindrical aging drum. Background Art

[0002] At present, in the viscose fiber production and manufacturing industry, the aging drum is a device used for continuous aging in viscose production. During production, by rotating the drum body, the alkali cellulose in the drum is continuously turned over to achieve a uniform aging process. In order to control the degradation of the alkali cellulose in the drum, when the cuprammonium viscosity at the aging outlet is within the process control range, it is necessary to open the discharge bin door of the aging drum for discharging. As Figure 1 shown, there are four discharge bin doors 3 at the fixed end cover 2 of the outlet on the existing aging drum rotary drum 1. When discharging, how much the bin door is opened and at what angle it is opened need to be controlled manually. As a result, the discharge amount of the alkali cellulose in the drum is relatively rough and inaccurate. Moreover, the position at the discharge site is too narrow, and the aged alkali cellulose has a high alkalinity. If a person accidentally touches it, it is easy to cause skin burns, posing a safety hazard and seriously restricting the normal production of the enterprise. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the invention object of the utility model is to provide an automatic control device for the discharge bin door of a rotary cylindrical aging drum, which can control the discharge amount of alkali cellulose as needed, realize arbitrary adjustment and automatic control of the discharge bin door, and meet the production needs of viscose fiber.

[0004] To achieve the above invention object, an automatic control device for the discharge bin door of a rotary cylindrical aging drum of the utility model includes a rotary drum, a digital controller, a valve positioner, an actuator, a transmission mechanism, a discharge bin door assembly, and a conveyor belt; the discharge bin door assembly is fixedly arranged at the outlet end of the rotary drum, the discharge bin door assembly is connected with the actuator through the transmission mechanism, and the actuator is remotely connected with the digital controller through the valve positioner; the digital controller remotely controls the opening and closing action of the valve positioner according to the cuprammonium viscosity information of the alkali cellulose in the rotary drum, drives the actuator to rotate at a corresponding angle manually by a person, and controls the opening and closing of the discharge bin door assembly through the transmission mechanism; the alkali cellulose in the rotary drum is conveyed to the next process through the conveyor belt.

[0005] To achieve the above-mentioned invention objective, an automatic control device for the discharge silo door of a rotary drum type aging drum in the present utility model includes a rotary drum, a digital controller, a valve positioner, an actuator, a transmission mechanism, a discharge silo door assembly, and a conveyor belt; a discharge silo door assembly is fixedly provided at the outlet end of the rotary drum, the discharge silo door assembly is connected to the actuator through the transmission mechanism, and the actuator is remotely connected to the digital controller through the valve positioner; the digital controller remotely controls the opening and closing action of the valve positioner according to the viscosity information of cuprammonium cellulose in the rotary drum, drives the actuator to rotate at a corresponding angle, and controls the opening and closing of the discharge silo door assembly through the transmission mechanism; the cuprammonium cellulose in the rotary drum is conveyed to the next process through the conveyor belt.

[0006] Further, the valve positioner is installed on the actuator, and the valve positioner is an angular travel mechanism of YTC-1000R, and its opening and closing action is carried out by the 4-20 mA signal transmitted by the digital controller, and it performs an action of 0-90° under the 4-20 mA signal.

[0007] Further, the valve positioner is installed on the actuator, and the valve positioner is an angular travel mechanism of YTC-1000R, and the 4-20 mA signal transmitted by the digital controller controls the valve positioner to perform an opening and closing action of 0-90°.

[0008] Further, the digital controller is installed in the remote control room and remotely controls the valve positioner through a data cable. The manual output signal of the digital controller is 4-20 mA. When the output signal is 4 mA, the valve positioner is in a fully closed state, and when the output signal is 20 mA, the valve positioner is in a fully open state.

[0009] Further, the transmission mechanism is composed of a main shaft, a cylinder bracket, and a main shaft bracket. One end of the main shaft installed on the cylinder bracket is inserted into the actuator, and the other end is connected to the sector-shaped feed door of the discharge silo door assembly through the main shaft bracket; the cylinder bracket is fixedly connected to the equipment frame.

[0010] Further, the discharge silo door assembly is composed of a sector-shaped feed door, an openable and closable fixed feed door, and a bearing baffle. The bearing baffle located below the sector-shaped feed door is connected to the fixed end cover, and the openable and closable fixed feed door is located above the sector-shaped feed door.

[0011] Further, the actuator is an angular travel control cylinder. The actuator receives the instruction of the digital controller, drives the main shaft to rotate, and further drives the sector-shaped feed door to rotate left and right at the same angle in the same direction. The actuator is fixed on the cylinder bracket.

[0012] Further, the rotary drum includes a feed inlet and a discharge outlet. The height of the feed inlet is higher than that of the discharge outlet. The feed inlet and the discharge outlet have a slope of 1:100, and the conveyor belt is located below the discharge outlet.

[0013] Compared with the prior art, the utility model utilizes the manual output control function of the digital controller to control the output of the valve positioner. Its output drives the actuator to act, and then drives the transmission main shaft to rotate. The rotation of the main shaft causes the corresponding sector-shaped material gate to rotate at the same angle, so as to control the opening and closing size of the discharge material gate. The utility model realizes the arbitrary adjustment and automatic control of the discharge bin door through the use of electrical and instrument components such as cylinders, valve positioners, and numerical control instruments, cancels the direct manual operation of the bin door, completes remote monitoring and precise control, reduces the intensity of manual operation, improves the safety production coefficient, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic cross-sectional structure diagram of the prior art.

[0015] Figure 2 It is a schematic simplified cross-sectional structure diagram of the utility model.

[0016] Figure 3 It is a schematic simplified structure diagram of the utility model.

[0017] Figure 4 It is Figure 3 schematic simplified structure diagram of the structure with a bearing baffle.

[0018] Figure 5 It is Figure 4 side view of.

[0019] Figure 6 It is a schematic diagram of the usage state of the utility model.

[0020] In the figure, 1. rotary drum, 2. fixed end cover, 3. discharge bin door, 4. digital controller, 5. valve positioner, 6. actuator, 7. transmission mechanism, 7.1 main shaft, 7.2 cylinder bracket, 7.3 main shaft bracket, 8. discharge bin door assembly, 8.1 sector-shaped material gate, 8.2 openable and closable fixed material gate, 8.3 bearing baffle, 8.3.1 bracket, 8.3.2 small shaft, 8.3.3 bearing, 9. conveyor belt, 10. feed inlet, 11. discharge outlet, 12. equipment frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following further details the utility model in conjunction with the drawings and embodiments.

[0022] As Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown in the figure, the utility model includes a rotary drum 1, a digital controller 4, a valve positioner 5, an actuator 6, a transmission mechanism 7, a discharge bin door assembly 8, and a conveyor belt 9. The outlet end of the rotary drum 1 is fixedly provided with a discharge bin door assembly 8. The discharge bin door assembly 8 is connected to the actuator 6 through a transmission mechanism 7. The actuator 6 is remotely connected to the digital controller 4 through the valve positioner 5. The digital controller 4 is manually controlled. When the operator measures that the viscosity of cuprammonium cellulose in the outlet of the rotary drum 1 is within the process control range, the operator manually inputs the opening angle of the sector-shaped door 8.1 of the discharge bin door assembly 8 on the digital controller 4, remotely controls the switching action of the valve positioner 5, drives the actuator 6 to rotate by a corresponding angle, and controls the opening and closing of the sector-shaped door 8.1 of the discharge bin door assembly 8 through the transmission mechanism 7. The cuprammonium cellulose in the rotary drum 1 is conveyed to the next process through the conveyor belt 9.

[0023] Preferably, the valve positioner 5 is installed on the actuator 6. The valve positioner 5 is an angular travel mechanism of YTC-1000R, and the 4-20mA signal transmitted by the digital controller 4 controls the valve positioner 5 to perform a switching action of 0-90°.

[0024] Preferably, the digital controller 4 is installed in the remote control room and remotely controls the valve positioner 5 through a data cable. The manual output signal of the digital controller 4 is 4-20mA. When the output signal is 4mA, the valve positioner 5 is in a fully closed state. When the output signal is 20mA, the valve positioner 5 is in a fully open state. The model of the digital controller 4 is DY22AI10, and the specification of the connected data cable is KVVP3*1.5, both of which are off-the-shelf components.

[0025] Preferably, the transmission mechanism 7 is composed of a main shaft 7.1, a cylinder bracket 7.2, and a main shaft bracket 7.3. One end of the main shaft 7.1 installed on the cylinder bracket 7.2 is inserted into the actuator 6, and the other end is connected to the sector-shaped door 8.1 of the discharge bin door assembly 8 through the main shaft bracket 7.3. The cylinder bracket 7.2 is fixedly connected to the equipment frame 12.

[0026] Preferably, the discharge bin door assembly 8 is composed of a sector-shaped door 8.1, an openable and closable fixed door 8.2, and a bearing belt baffle 8.3. The bearing belt baffle 8.3 located below the sector-shaped door 8.1 is connected to the fixed end cover 2. The openable and closable fixed door 8.2 is located above the sector-shaped door 8.1 and is connected to the fixed end cover 2 by a bolt. During the aging process of the drum, the discharge bin door will be subjected to the force of the material in the drum pushing outward, causing the bin door to open outward and resulting in material leakage. For this reason, three bearing belt baffles 8.3 are installed below the sector-shaped door 8.1. The bracket 8.3.1 on the bearing belt baffle 8.3 is fixed to the fixed end cover 2 with bolts. One end of the small shaft 8.3.2 thereon is fixed to the bracket 8.3.1, and the other end of the small shaft 8.3.2 is installed with a bearing 8.3.3. The outer ring of the bearing 8.3.3 contacts the sector-shaped door 8.1 to prevent the sector-shaped door 8.1 from opening outward and avoid material leakage, and it is convenient for the sector-shaped door 8.1 to rotate left and right during discharging. On the other hand, due to the limitation of the on-site condition position, the designed size of the sector-shaped door 8.1 cannot be too large. Otherwise, it will limit the entry and exit of personnel during parking maintenance or material scraping. The openable and closable fixed door 8.2 is used to open during maintenance or material scraping to avoid the disadvantage of the small designed size of the sector-shaped door 8.1.

[0027] Preferably, the actuator 6 is an angular travel control cylinder, and a compressed air gas source is connected to the cylinder. After the digital controller 4 issues an instruction and the valve positioner 5 receives it, the gas source is opened. The piston movement of the cylinder in the actuator 6 drives the main shaft 7.1 to rotate, and then drives the sector-shaped door 8.1 to rotate left and right at the same angle in the same direction. The actuator 6 is fixed on the cylinder bracket 7.2.

[0028] Preferably, the drum 1 includes a feed inlet 10 and a discharge outlet 11. The height of the feed inlet 10 is higher than that of the discharge outlet 11. The feed inlet 10 and the discharge outlet 11 have a slope of 1:100. The conveyor belt 9 is located below the discharge outlet 11.

[0029] When the aging drum of the present utility model is working, alkali cellulose enters the rotating drum 1 from the feed inlet 10. Since the rotating drum 1 has a slope of 1:100 (the feed inlet end is higher than the discharge outlet end), every time the rotating drum 1 makes one revolution, the raw material will move a certain distance downward during the tumbling process. Using this principle, the alkali cellulose in production will automatically move from the feed inlet 10 end to the discharge outlet 11 end. When the copper ammonia viscosity after aging measured by sampling at the discharge outlet 11 is qualified or too high, it is necessary to open the feed door for discharging. At this time, the operator manually inputs the opening angle of the sector-shaped feed door 8.1 (selected and set between 0 and 90°, for example, rotated 50°) on the digital controller 4. The digital controller 4 transmits the output signal to the valve positioner 5. The valve positioner 5 performs the opening action, controls the actuator 6 to rotate at a corresponding angle, drives the main shaft 7.1 to rotate, and thus drives the sector-shaped feed door 8.1 to rotate in the same direction and at the same angle, opening to the set angle for discharging. When the copper ammonia viscosity after aging measured by sampling at the discharge outlet is too low, it is necessary to close the sector-shaped feed door 8.1 to stop discharging. At this time, the operator manually inputs the closing angle of the sector-shaped feed door 8.1 on the digital controller 4. The digital controller 4 transmits the output signal to the valve positioner 5. The valve positioner 5 performs the closing action of the sector-shaped feed door 8.1, controls the actuator 6 to rotate at a corresponding angle, drives the main shaft 7.1 to rotate, and thus drives the sector-shaped feed door 8.1 to rotate in the same direction and at the same angle, closing to the set angle to stop discharging.

Claims

1. An automatic control device for the discharge bin door of a rotary cylinder aging drum, characterized in that: It includes a rotary drum (1), a digital controller (4), a valve positioner (5), an actuator (6), a transmission mechanism (7), a discharge bin door assembly (8), and a conveyor belt (9); a discharge bin door assembly (8) is fixedly provided at the outlet end of the rotary drum (1), the discharge bin door assembly (8) is connected to the actuator (6) through the transmission mechanism (7), and the actuator (6) is remotely connected to the digital controller (4) through the valve positioner (5); the digital controller (4) remotely controls the opening and closing action of the valve positioner (5) according to the viscosity information of cuprammonium cellulose in the rotary drum (1), drives the actuator (6) to rotate by a corresponding angle, and controls the opening and closing of the discharge bin door assembly (8) through the transmission mechanism (7); the cuprammonium cellulose in the rotary drum (1) is conveyed to the next process through the conveyor belt (9).

2. The automatic control device for the discharge bin door of a rotary drum aging drum according to claim 1, characterized in that: The valve positioner (5) is installed on the actuator (6), and the valve positioner (5) is an angular travel mechanism of YTC-1000R, and the 4-20mA signal transmitted by the digital controller (4) controls the valve positioner (5) to perform the opening and closing action of 0-90°.

3. The automatic control device for the discharge bin door of a rotary drum aging drum according to claim 1, wherein: The digital controller (4) is installed in the remote control room and remotely controls the valve positioner (5) through a data cable. The manual output signal of the digital controller (4) is 4-20mA. When the output signal is 4mA, the valve positioner (5) is in the fully closed state, and when the output signal is 20mA, the valve positioner (5) is in the fully open state.

4. An automatic control device for the discharge bin door of a rotary drum aging drum according to claim 1, characterized in that: The transmission mechanism (7) is composed of a main shaft (7.1), a cylinder bracket (7.2), and a main shaft bracket (7.3). One end of the main shaft (7.1) installed on the cylinder bracket (7.2) is inserted into the actuator (6), and the other end is connected to the sector-shaped feed door (8.1) of the discharge bin door assembly (8) through the main shaft bracket (7.3); the cylinder bracket (7.2) is fixedly connected to the equipment frame (12).

5. The automatic control device for the discharge bin door of a rotary drum aging drum according to claim 1, characterized in that: The discharge bin door assembly (8) is composed of a sector-shaped feed door (8.1), an openable and closable fixed feed door (8.2), and a bearing baffle (8.3). The bearing baffle (8.3) located below the sector-shaped feed door (8.1) is connected to the fixed end cover (2), and the openable and closable fixed feed door (8.2) is located above the sector-shaped feed door (8.1).

6. The automatic control device for the discharge bin door of a rotary drum aging drum according to claim 1, characterized in that: The actuator (6) is an angular travel control cylinder. The actuator (6) receives the instruction of the digital controller (4), drives the main shaft (7.1) to rotate, and then drives the sector-shaped feed door (8.1) to rotate left and right at the same angle in the same direction. The actuator (6) is fixed on the cylinder bracket (7.2).

7. An automatic control device for the discharge bin door of a rotary drum aging drum according to claim 1, characterized in that: The rotary drum (1) includes a feed inlet (10) and a discharge outlet (11). The height of the feed inlet (10) is higher than the height of the discharge outlet (11). The feed inlet (10) and the discharge outlet (11) have a slope of 1:100, and the conveyor belt (9) is located below the discharge outlet (11).

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