Leakage-proof fluidized bed dryer for low-viscosity carboxymethyl fibers

Abstract

The utility model relates to the technical field of low-viscosity carboxymethyl fiber processing, in particular to an anti-leakage fluidized bed dryer for low-viscosity carboxymethyl fibers, which comprises a drying fluidized bed and a vibrating plate, the vibrating plate is movably assembled in the middle of the inside of the drying fluidized bed, three groups of air distribution plates are arranged below the vibrating plate, and the air distribution plates are arranged in the middle of the drying fluidized bed. The bottom end of each air distribution plate communicates with a flow dividing air pipe, the flow dividing air pipes extend to the outer wall of the drying fluidized bed and communicate with the heat flow pipe, and fans are installed in the flow dividing air pipes. According to the anti-leakage fluidized bed dryer for the low-viscosity carboxymethyl fibers, through the arrangement of the heat flow pipe, uniform air distribution and automatic cleaning of the air distribution plate, it is ensured that gas can uniformly pass through a bed layer, confluence and growth of bubbles are avoided, particles moving violently can collide with the anti-collision plate to fall down, temperature and concentration distribution in a drying fluidized bed is more uniform, and the drying effect is better. And blockage and faults are avoided, and the problem of raw material leakage caused by the slugging phenomenon is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-viscosity carboxymethyl fiber processing, in particular to a leakage-proof fluidized bed drying machine for low-viscosity carboxymethyl fiber. Background Art

[0002] Low-viscosity carboxymethyl fiber is an important industrial raw material. Because the moisture content of carboxymethyl fiber directly affects its quality and subsequent use effect, it needs a fluidized bed dryer for drying. This equipment can keep the material in a suspended state during the drying process through vibration and airflow, achieving uniform heating and rapid drying. However, due to the characteristics of low-viscosity carboxymethyl fiber, it is easily affected by temperature and airflow changes during the drying process, causing irregular particle jumping.

[0003] However, the existing fluidized bed dryers on the market often cannot avoid surging when processing low-viscosity carboxymethyl fiber. Surging is caused by uneven airflow. When the particles in the drying bed are impacted by uneven airflow, some particles will jump violently or even fly out of the drying area, causing the raw materials to leak out. This phenomenon not only wastes a lot of raw materials, but also increases the workload of cleaning and maintenance of the equipment.

[0004] Therefore, there is an urgent need for a leakage-proof fluidized bed dryer for low-viscosity carboxymethyl fibers to solve the technical defects proposed in the above-mentioned technology. Utility Model Content

[0005] The utility model aims to provide a leakage-proof fluidized bed dryer for low-viscosity carboxymethyl fiber, so as to solve the problem of raw material leakage caused by surging phenomenon mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a fluidized bed dryer for preventing leakage of low-viscosity carboxymethyl fiber, comprising a drying fluidized bed and a vibration plate, a vibration plate movably mounted in the middle position inside the drying fluidized bed, an air distribution plate arranged below the vibration plate, three groups of air distribution plates are arranged, the bottom end of each group of air distribution plates is connected to a shunt air duct, the shunt air duct extends to the outer wall of the drying fluidized bed and is connected to a heat flow pipe, fans are installed inside the shunt air duct, tracks are respectively arranged on both sides of the air distribution plate, brush rollers are movably connected between the tracks, a servo motor is fixedly connected to the right side of the outer wall of the track, a threaded rod is fixedly connected to the output shaft of the servo motor, a threaded block is movably sleeved on the outside of the threaded rod, the top of the threaded block is fixedly connected to the right wall of the brush roller, a rotating motor is fixedly connected to the right side of the outer wall of the threaded block, the rotating motor is fixedly connected to the brush roller, an anti-collision plate is arranged above the vibration plate, and a bottom cover is installed at the bottom end of the drying fluidized bed.

[0007] Preferably, three groups of brush rollers are provided, and the three groups of brush rollers are fixedly connected by a connecting rod.

[0008] Preferably, the brush roll corresponds to the air distribution plate, and the length of the track is greater than the width of the air distribution plate.

[0009] Preferably, the anti-collision plates are two groups of arc-shaped plates fixed to the inner wall of the drying fluidized bed, and are obliquely arranged at both ends above the vibrating plate.

[0010] Preferably, a shock-absorbing bracket is installed at the bottom end of the drying fluidized bed, a vibrating motor is arranged on the left side of the drying fluidized bed, an output shaft of the vibrating motor is fixedly connected with a vibrating shaft, and the vibrating shaft extends into the drying fluidized bed and is fixedly connected with the vibrating plate.

[0011] Preferably, three air separation plates are arranged above the drying fluidized bed, the top end of each group of air separation plates is connected to an air separation pipe, the right side of the air separation pipe is connected to a cyclone separator, and a recovery box is arranged below the cyclone separator.

[0012] Preferably, a perforated plate is arranged in each of the air separation plates, and the perforated plate can be disassembled from the air separation plate.

[0013] Preferably, a feed inlet is arranged at the left side of the top end of the drying fluidized bed, a discharge outlet is arranged at the right side of the bottom end of the drying fluidized bed, a pushing channel is arranged below the discharge outlet, a variable-speed motor is fixedly connected to the left outer wall of the pushing channel, and an output shaft of the variable-speed motor is fixedly connected with a spiral pushing shaft.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The fluidized bed dryer for preventing leakage of low-viscosity carboxymethyl cellulose not only greatly reduces the problem of raw material leakage caused by slugging phenomenon, realizes that the air-selected suspended particles are convenient for reprocessing, but also realizes uniform discharging;

[0015] (1) By setting up a heat pipe, a brush roller, a collision prevention plate for the air distribution plate, a bottom cover, a shunt air duct, a fan, a recovery box, a cyclone separator, an air separation pipe, an air separation plate, a track, a rotating motor, a threaded block, a threaded rod, and a servo motor, when the vibration plate in the drying fluidized bed vibrates, hot air flow is introduced from the heat pipe, and the air flow is accelerated and blown into the shunt air duct by three groups of fans respectively. After the air flow enters the air distribution plate upward, it is evenly blown upward to the vibration plate through the air holes in the air distribution plate, without the problem of uneven air flow, forming a drying space in the entire drying fluidized bed. With the high-frequency vibration of the vibration plate, the methyl cellulose raw materials continuously jump up and down. The particles that jump too high will hit the collision prevention plate and fall back onto the vibration plate, while the suspended particles with too small particle size will enter the air separation pipe through the pores of the air separation plate, be separated in the cyclone separator, and fall into the recovery box for re-collection. In this way, there will be no suspended particles sticking to the drying fluidized bed. When the equipment is shut down, the rotating motor and the feeding channel are started. The rotating motor drives the brush roller to rotate at high speed, and the servo motor drives the threaded rod to rotate, thereby driving the threaded block to move. Since the threaded block is located below the brush roller, there will be no mechanical interference. The horizontally rotating at high speed advances from above the air distribution plate, brushing the blocked particles in the pores of the air distribution plate to the bottom of the drying fluidized bed. And the small amount of particles that leak out from the side of the vibration plate due to the slugging phenomenon and have irregular jumping will fall to the bottom of the drying fluidized bed. When the equipment stops, the bottom cover can be opened to clean the particles. By evenly distributing the air and automatically cleaning the air distribution plate, it is ensured that the gas can uniformly pass through the bed layer, avoiding the convergence and growth of bubbles. The violently moving particles will also hit the collision prevention plate and fall, greatly reducing the problem of raw material leakage caused by the slugging phenomenon. The temperature and concentration distribution in the drying fluidized bed are more uniform, avoiding blockage and failure;

[0016] (2) By setting up an air separation plate, an air separation pipe, a cyclone separator, and a recovery box, three groups of air separation plates are arranged above the drying fluidized bed. When the violently moving particles jump up, the suspended particles with a smaller particle size that can pass through the pores of the air separation plate will be sucked into the air separation pipe by the air separation pipe and enter the cyclone separator. The particles are separated from the air flow by the principle of centrifugal separation and enter the recovery box, facilitating the subsequent reprocessing of the methyl cellulose raw materials;

[0017] (3) By setting up a discharge port and a feeding channel, a feeding channel is arranged below the discharge port. The dried raw materials enter the feeding channel and are discharged at a uniform speed under the propulsion of a variable-speed motor, avoiding the problems of high-temperature agglomeration caused by too fast discharging or raw material sticking to the inner wall due to too slow discharging. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a front sectional structure schematic diagram of the present utility model;

[0019] Figure 2 is a top view structure schematic diagram of the air distribution plate of the present utility model;

[0020] Figure 3 It is a top view structural schematic diagram of the air separation plate of the present utility model;

[0021] Figure 4 It is a schematic diagram of the installation position of the anti-collision plate of the present utility model.

[0022] In the figure: 1. Drying fluidized bed; 2. Feed inlet; 3. Vibration shaft; 4. Vibration motor; 5. Heat flow pipe; 6. Vibration plate; 7. Brush roller; 8. Air distribution plate; 9. Shock absorption bracket; 10. Anti-collision plate; 11. Bottom cover; 12. Shunt air duct; 13. Fan; 14. Variable speed motor; 15. Discharge port; 16. Pushing channel; 17. Screw pushing shaft; 18. Recycling box; 19. Cyclone separator; 20. Air separation pipe; 21. Air separation plate; 22. Track; 23. Rotating motor; 24. Threaded block; 25. Threaded rod; 26. Servo motor. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0024] Embodiment 1: Please refer to Figures 1-4 , a fluidized bed dryer for preventing leakage of low-viscosity carboxymethyl cellulose, including a drying fluidized bed 1 and a vibration plate 6. A vibration plate 6 is movably assembled at the middle position inside the drying fluidized bed 1. An air distribution plate 8 is arranged below the vibration plate 6. There are three groups of air distribution plates 8. The bottom end of each group of air distribution plates 8 is communicated with a shunt air duct 12. The shunt air duct 12 extends to the outer wall of the drying fluidized bed 1 and is communicated with the heat flow pipe 5. A fan 13 is installed inside each shunt air duct 12. Tracks 22 are respectively arranged on both sides of the air distribution plate 8. A brush roller 7 is movably connected between the tracks 22. The right side of the outer wall of the track 22 is fixedly connected with a servo motor 26. The output shaft of the servo motor 26 is fixedly connected with a threaded rod 25. A threaded block 24 is movably sleeved outside the threaded rod 25. The top end of the threaded block 24 is fixedly connected with the right wall of the brush roller 7. The right side of the outer wall of the threaded block 24 is fixedly connected with a rotating motor 23. The rotating motor 23 is fixedly connected with the brush roller 7. An anti-collision plate 10 is arranged above the vibration plate 6. The bottom end of the drying fluidized bed 1 is provided with a bottom cover 11. There are three groups of brush rollers 7, and the three groups of brush rollers 7 are fixedly connected by a connecting rod. The brush roller 7 corresponds to the air distribution plate 8. The length of the track 22 is greater than the width of the air distribution plate 8. The anti-collision plate 10 is two groups of arc-shaped plates fixed on the inner wall of the drying fluidized bed 1, and are obliquely arranged at both ends above the vibration plate 6;

[0025] Specifically, as shown in Figure 1 , Figure 2 andFigure 4 As shown in the figure, when the vibrating plate 6 in the drying fluidized bed 1 vibrates, hot air flow is introduced from the heat flow pipe 5, and the air flow is accelerated and blown into the shunt air pipe 12 by three groups of fans 13 respectively. After the air flow enters the air distribution plate 8 upward, it is evenly blown upward to the vibrating plate 6 through the air holes in the air distribution plate 8, without the problem of uneven air flow, so that a drying space is formed in the whole drying fluidized bed 1. With the high-frequency vibration of the vibrating plate 6, the methyl cellulose raw materials continuously jump up and down. The particles that jump too high will hit the anti-collision plate 10 and fall back onto the vibrating plate 6, while the suspended particles with too small particle size will enter the air separation pipe 20 through the pores of the air separation plate 21, and are separated in the cyclone separator 19 and fall into the recovery box 18 for re-collection. In this way, there will be no suspended particles sticking to the drying fluidized bed 1. When the equipment is shut down, the rotating motor 23 and the feeding channel 16 are started. The rotating motor 23 drives the brush roller 7 to rotate at a high speed, and the servo motor 26 drives the threaded rod 25 to rotate, thereby driving the threaded block 24 to move. Since the threaded block 24 is located below the brush roller 7, there will be no mechanical interference. The horizontally rotating at a high speed advances from above the air distribution plate 8, and the particulate matter blocking the pores of the air distribution plate 8 is brushed to the lower part of the drying fluidized bed 1. And a small amount of particles that leak out from the side of the vibrating plate 6 due to the slugging phenomenon and have irregular jumping will fall to the bottom of the drying fluidized bed 1. When the equipment stops, the bottom cover 11 can be opened to clean the particles. By evenly distributing the air and automatically cleaning the air distribution plate 8, it is ensured that the gas can uniformly pass through the bed layer, avoiding the convergence and growth of bubbles.

[0026] Embodiment 2: A shock-absorbing bracket 9 is installed at the bottom end of the drying fluidized bed 1, a vibration motor 4 is arranged on the left side of the drying fluidized bed 1, the output shaft of the vibration motor 4 is fixedly connected with a vibration shaft 3, the vibration shaft 3 extends into the drying fluidized bed 1 and is fixedly connected with the vibrating plate 6, three groups of air separation plates 21 are arranged above the drying fluidized bed 1, the top end of each group of air separation plates 21 is connected to the air separation pipe 20, the right side of the air separation pipe 20 is connected to the cyclone separator 19, a recovery box 18 is arranged below the cyclone separator 19, and porous plates are arranged in the air separation plates 21, and the porous plates can be disassembled from the air separation plates 21;

[0027] Specifically, as Figure 1 and Figure 3 shown, three groups of air separation plates 21 are arranged above the drying fluidized bed 1. When the violently moving particles jump up, the suspended particles with a smaller particle size that can pass through the pores of the air separation plate 21 will be sucked by the air separation pipe 20 into the cyclone separator 19, and the particles are separated from the air flow by the principle of centrifugal separation and enter the recovery box 18, which is convenient for the subsequent reprocessing of the methyl cellulose raw materials.

[0028] Example 3: A feed inlet 2 is provided on the left side at the top of the drying fluidized bed 1, and a discharge outlet 15 is provided on the right side at the bottom of the drying fluidized bed 1. A pushing channel 16 is provided below the discharge outlet 15. The left side of the outer wall of the pushing channel 16 is fixedly connected to a variable-speed motor 14, and the output shaft of the variable-speed motor 14 is fixedly connected to a spiral pushing shaft 17;

[0029] Specifically, as Figure 1 shown, a pushing channel 16 is provided below the discharge outlet 15. The dried raw materials enter the pushing channel 16 and are discharged at a uniform speed under the propulsion of the variable-speed motor 14, avoiding problems such as high-temperature agglomeration caused by too fast discharging or raw materials sticking to the inner wall due to too slow discharging.

[0030] Working principle: When the vibrating plate 6 in the drying fluidized bed 1 vibrates, hot air flow is introduced from the heat flow pipe 5, and the air flow is accelerated and blown into the shunt air pipes 12 by three groups of fans 13 respectively. After the air flow enters upward into the air distribution plate 8, it is evenly blown upward from the air holes in the air distribution plate 8 to the vibrating plate 6 above, without generating problems of uneven air flow, forming a drying space inside the entire drying fluidized bed 1. With the high-frequency vibration of the vibrating plate 6, the methyl cellulose raw materials continuously jump up and down. The particles that jump too high will hit the anti-collision plate 10 and fall back onto the vibrating plate 6, while the suspended particles with too small particle size will enter the air separation pipe 20 through the pores of the air separation plate 21, be separated in the cyclone separator 19 and fall into the recovery box 18 for re-collection. In this way, there will be no suspended particles sticking to the drying fluidized bed 1. A pushing channel 16 is provided below the discharge outlet 15. The dried raw materials enter the pushing channel 16 and are discharged at a uniform speed under the propulsion of the variable-speed motor 14. When the equipment is shut down, the rotating motor 23 and the pushing channel 16 are started. The rotating motor 23 drives the brush roller 7 to rotate at a high speed, and the servo motor 26 drives the threaded rod 25 to rotate, thereby driving the threaded block 24 to move. Since the threaded block 24 is located below the brush roller 7, there will be no mechanical interference. The horizontally rotating at a high speed advances from above the air distribution plate 8, cleaning the particulate matter blocked in the pores of the air distribution plate 8 to the lower part of the drying fluidized bed 1, and the small amount of particles that leak out irregularly from the side of the vibrating plate 6 due to the slugging phenomenon will fall to the bottom of the drying fluidized bed 1. When the equipment stops, the bottom cover 11 can be opened to clean the particles.

[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A fluidized bed dryer for preventing leakage of low-viscosity carboxymethyl cellulose, comprising a drying fluidized bed (1) and a vibrating plate (6), characterized in that: A vibrating plate (6) is movably assembled at the middle position inside the drying fluidized bed (1). A air distribution plate (8) is arranged below the vibrating plate (6). There are three groups of air distribution plates (8), and a shunt air duct (12) is communicated with the bottom end of each group of air distribution plates (8). The shunt air duct (12) extends to the outer wall of the drying fluidized bed (1) and is communicated with the heat flow pipe (5). A blower (13) is installed inside each of the shunt air ducts (12). Tracks (22) are respectively arranged on both sides of the air distribution plate (8). A brush roller (7) is movably connected between the tracks (22). A servo motor (26) is fixedly connected to the right side of the outer wall of the track (22). An output shaft of the servo motor (26) is fixedly connected to a threaded rod (25). A threaded block (24) is movably sleeved outside the threaded rod (25). The top end of the threaded block (24) is fixedly connected to the right wall of the brush roller (7). A rotary motor (23) is fixedly connected to the right side of the outer wall of the threaded block (24). The rotary motor (23) is fixedly connected to the brush roller (7). An anti-collision plate (10) is arranged above the vibrating plate (6). A bottom cover (11) is installed at the bottom end of the drying fluidized bed (1).

2. A fluidized bed dryer for preventing leakage of low-viscosity carboxymethyl cellulose according to claim 1, characterized in that: There are three groups of the brush rollers (7), and the three groups of brush rollers (7) are fixedly connected by connecting rods.

3. A fluidized bed dryer for preventing leakage of low-viscosity carboxymethyl cellulose according to claim 1, characterized in that: The brush roller (7) corresponds to the air distribution plate (8), and the length of the track (22) is greater than the width of the air distribution plate (8).

4. A fluidized bed dryer for preventing leakage of low-viscosity carboxymethyl cellulose according to claim 1, characterized in that: The anti-collision plate (10) is composed of two arc-shaped plates fixed to the inner wall of the drying fluidized bed (1), and is obliquely arranged at both ends above the vibrating plate (6).

5. A fluidized bed dryer for preventing leakage of low-viscosity carboxymethyl cellulose according to claim 1, characterized in that: A shock-absorbing bracket (9) is installed at the bottom end of the drying fluidized bed (1). A vibration motor (4) is arranged on the left side of the drying fluidized bed (1). An output shaft of the vibration motor (4) is fixedly connected to a vibration shaft (3). The vibration shaft (3) extends into the drying fluidized bed (1) and is fixedly connected to the vibrating plate (6).

6. The fluidized bed dryer for preventing leakage of low-viscosity carboxymethyl cellulose according to claim 1, characterized in that: Three air separation plates (21) are arranged above the drying fluidized bed (1). The top end of each group of air separation plates (21) is connected to an air separation pipe (20). The right side of the air separation pipe (20) is connected to a cyclone separator (19). A recovery box (18) is arranged below the cyclone separator (19).

7. A fluidized bed dryer for preventing leakage of low-viscosity carboxymethyl cellulose according to claim 6, characterized in that: A porous plate is arranged inside each of the air separation plates (21), and the porous plate can be disassembled from the air separation plate (21).

8. A fluidized bed dryer for preventing leakage of low-viscosity carboxymethyl cellulose according to claim 1, characterized in that: A feed inlet (2) is arranged at the left side of the top end of the drying fluidized bed (1). A discharge outlet (15) is arranged at the right side of the bottom end of the drying fluidized bed (1). A pushing channel (16) is arranged below the discharge outlet (15). A variable-speed motor (14) is fixedly connected to the left side of the outer wall of the pushing channel (16). An output shaft of the variable-speed motor (14) is fixedly connected to a spiral pushing shaft (17).

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