CN204724144U - A kind of spouted fluidized machine preparing multiple dimensioned solid-phase mixture - Google Patents

Abstract

The utility model belongs to the technical field of fluidization. A spray fluidizer for preparing multi-scale solid-phase mixtures, including a cylinder, a conical distributor, a stirring device, a discharge system and a pipeline cutting machine; the side wall of the cylinder is provided with a feed port and a discharge port, and The feed port is located above the feed port; the conical distributor is installed at the lower part of the cylinder, which is a double-layer structure, including an outer conical shell and an inner conical body. There are several distribution holes for gas distribution on the inner conical body, and the outer conical The lower end of the shaped shell is connected with a fluidizing gas pipeline, and the lower end of the inner cone is connected with a spraying gas pipeline. The spraying gas pipeline is arranged in the fluidizing gas pipeline and is coaxial with it; the stirring device includes a Stirring shaft motor and stirring wheel; there is also a spray tube in the barrel, the upper end of the spray tube is located directly below the stirring wheel, and the lower end extends to the conical cavity of the inner cone. The pipeline cutter is installed at one end of the spray gas pipeline. The utility model can efficiently disperse and mix multi-scale solid phases and transport them into a network to obtain evenly mixed and stable products.

Description

A jet fluidizer for preparing multi-scale solid-phase mixture

technical field

The utility model belongs to the technical field of jet fluidization.

Background technique

Composite materials have been widely used in various fields due to the synergistic effect between the various components, which greatly improved their corresponding mechanical and physical properties. Fiber-reinforced composites are an important member of the composite material family. In the preparation of fiber-reinforced composite materials, according to the process requirements, it is necessary to impregnate and shape the fibers of various shapes and weaves and the reinforced matrix (referred to as the matrix). One of the products needs to cut the continuous fiber into a certain length. The chopped fibers are used to make composite materials. This process requires cutting, dispersing and mixing the fibers with the matrix before impregnating and shaping them. From a technical and economic point of view, this process can and needs to realize the continuous production process.

Chinese patent CN1259183C discloses a method and device for preparing fiber-reinforced composite materials using a stirred-sprayed fluidized bed. Air is used as the fluidized medium to achieve sufficient mixing of the polymer matrix and fibers in the fluidized bed through fluidization and stirring. Mixing and dispersing the fiber bundles into monofilaments adsorbed on the polymer matrix, so that the interface between the fiber monofilaments and the matrix is fully impregnated. After being pressed into a GMT sheet, the mechanical properties of the GMT sheet are very excellent. Chinese patents CN102416717A, CN102416718A, and CN102350254A disclose a clustered fiber pneumatic stirring and dispersing netting device. After the fibers are cut, they are transported to the pneumatic dispersion mixing chamber by negative pressure, and then electrostatic powder spraying and mixing are carried out in the settling chamber before being netted and transported. . Chinese patent CN203765822U discloses a stirred spouted fluidized bed, which uses a trumpet-shaped guide tube and multi-layer stirring paddles in the guide tube to improve fiber dispersion and mixing with matrix powder. In the disclosed patent, there are problems such as limited flow field synergy of jet fluidization, high power consumption of multi-layer stirring, and insufficient power for feeding and conveying, which affect the dispersion and mixing effect of multi-scale solid phases and the stability of product quality.

In the preparation of fiber-reinforced composite materials, according to the process requirements, the continuous fiber needs to be cut into a certain length of fiber, that is, the cut fiber. In the subsequent equipment, the impregnation of the matrix to the reinforcement fiber, that is, the cut fiber, is completed and shaped to obtain a composite material. In the process of preparing composite materials, it is necessary to cut and disperse the continuous fibers, and at the same time, it is necessary to transport the fibers to the downstream equipment for matting and impregnation with the matrix film; Blending, or pre-mixing of chopped fibers with a fibrous matrix to form a mat, and then impregnation in downstream equipment to obtain a composite material. The above-mentioned processes all have the requirement of cutting and dispersing the continuous fiber and then mixing and transporting it with the matrix, so as to realize the continuous production process.

Chinese patent CN203795284U utility model has a kind of vehicle-mounted fiber shearing cutterhead, and its described shearing cutterhead can be used on the fiber shearing equipment of paver at the fiber micro-surface, and has maneuverability. Chinese patent CN201981413U utility model discloses a kind of multi-purpose fiber cutting machine, described fiber cutting machine blade positioning is accurate, cutting precision is high, and the fiber that is cut is collected in the hopper. Chinese patent CN104355537A is a utility model of a glass fiber cutting and dispersing machine, which uses a breaking wheel to disperse and cut, and is transported downstream by a conveyor belt. Chinese patent CN203794788U utility model discloses a kind of glass fiber cutting structure, adopts the fiber that breaks up wheel and breaks up roller to disperse and cut, is collected by collecting hopper, conveyed by conveyor belt. Chinese patent discloses CN203505055U a kind of glass fiber cutting device, and described cutting device completes glass fiber cutting by knife roller and rubber roller. The fiber cutting machines disclosed above all use the gravity of the fibers to collect the chopped fibers, and then feed them into the fluidization equipment for dispersion. Since the fibers are light in weight after cutting, they are not easy to separate from the cutting machine. In addition, if the length and diameter of the fibers after chopping are relatively large, it is easy to cause intertwining and knotting between the fibers, which is not conducive to subsequent fluidization and dispersion.

Utility model content

The technical problem to be solved by the utility model is: to overcome the deficiency of the dispersion and mixing effect of the spouted fluidized bed in the prior art, and to provide a multi-scale solid-phase sprayed fluidized machine and a method for preparing a multi-scale solid-phase mixture.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a multi-scale solid-phase spray fluidization dispersion mixing device, including a cylinder, a conical distributor, a stirring device, a discharge system and a pipeline cutting machine;

The upper part of the cylinder is provided with a head, and its side wall is provided with a feed port and a discharge port, the discharge port is located above the feed port, and the discharge system is connected to the discharge port;

The conical distributor is installed in the lower part of the cylinder and has a double-layer structure, including an outer conical shell and an inner conical body. A ventilation chamber is formed between the outer conical shell and the inner conical body. The inner cone is provided with a number of distribution holes for distributing gas, the lower end of the outer cone shell is connected with a fluidizing gas pipeline, and the lower end of the inner cone is connected with a spray gas pipeline, and the spray gas pipeline is set in the fluidizing gas pipeline and coaxial with it;

The stirring device includes a stirring shaft that runs through the head of the cylinder, motors and circular stirring wheels that are respectively arranged at both ends of the stirring shaft. Between the feed ports; the cylinder is also provided with a spray tube, the upper end of the spray tube is located directly below the stirring wheel, and the lower end extends into the conical cavity of the inner cone, the spray tube and the spray tube The dynamic gas pipeline is coaxial; the spray gas pipeline is connected with the pipeline cutting machine.

Further, the discharge system includes sequentially connected material outlet pipes, material takeover pipes, material settling chambers, netting boxes, peeling beaters, pressure rollers and conveying curtains; the material outlet pipe is connected with the material discharge The material connection pipe and the material settling chamber are arranged vertically downward, the material connection pipe and the material outlet pipe are connected by an elbow with a smooth inner wall, and the material settling chamber is one-dimensional or two-dimensional from top to bottom Expanded shape, the size of the lower part of the material settling chamber is matched with the entrance of the net-forming box. When the settling chamber is one-dimensionally expanded, the material settling chamber section is oblong, and when the settling chamber is two-dimensionally expanded, the material settling chamber section is Oval;

A dust cage is installed in the net forming box, the center of the dust cage is provided with a suction slot with an upward opening, and the dust cage is also provided with a suction outlet pipe communicating with the suction slot.

Preferably, the angle γ between the expanded contour line of the material settling chamber and the vertical line is 3°-15°, preferably 6°-10°. The air velocity of the material from the cylinder is high and has jet characteristics. The jet velocity distribution is stable and uniform, and the expansion angle is within 15°. If the angle is too small, it is like flowing in a pipe, and the settling chamber needed to expand its lower part to cooperate with the net box will be too high, which is not conducive to equipment design and layout.

Further, twin-screws are arranged in the feed inlet.

Preferably, the diameter of the spray tube is 0.2 to 0.35 times the diameter of the cylinder, preferably 0.25 to 0.3 times, and the gas velocity in the spray tube is required to be relatively high in order to continue to turbulently disperse the multi-scale solid phase, and at the same time A speed difference is formed inside and outside the spray tube, which generates a lift from the bottom of the spray tube, and a downward force in the same direction as the gravity of the material at the feed inlet outside the spray tube, thus constituting the circulation of the material, and then making the material withstand multiple times. Turbulent Dispersive Mixing. The controlled speed ratio inside and outside the spray tube is 5-20, and the optimized speed ratio is 10-15; the diameter of the fluidizing gas pipeline is 0.4-1.2 times, preferably 0.8-1 times, the diameter of the spray tube; the circle The diameter of the shaped stirring wheel is 1.1 to 1.5 times, preferably 1.2 to 1.4 times, the diameter of the spray pipe. The role of the stirring wheel is to partition the flow field in the spouted fluidized bed. Its function is to prevent the high-speed material flow from the spraying tube from directly rushing to the top, and the short-circuit flow of the material into the settling chamber. This material has not achieved good dispersion. , and not fully mixed with the solid phase from the feed port; at the same time, it is necessary to be able to make the dispersed and mixed material flow out. If the diameter is too small, the former effect cannot be exerted, and if the diameter is too large, the latter effect cannot be guaranteed.

Further, several of the distribution holes are evenly distributed on the inner cone to form a distribution hole array, and the diameter of the distribution holes is 1-5 mm, preferably 1.5-3 mm. If the pore size is too small, the resistance drop of the fluidizing gas will increase, and the power consumption of the gas circuit will increase; if the pore size is too large, the gas distribution will be uneven, which may cause the partial buoyancy of the granular material to fall into the pipeline, affecting production and operation.

Further, the cone angle α of the conical distributor is 20° to 160°, preferably 30° to 120°, and this angle is used to adjust the distribution of the flow field, avoiding the generation of a low-velocity area of the airflow and making it necessary to disperse and mix more The scale solid phase cannot leave the bottom. If the angle is too large, it will be similar to a flat plate, and there will be obvious low-speed areas at the corners, which will affect the operation; if the angle is too small, it will affect the circulation space and path; the distance between the lower edge of the inner cone and the lower edge of the jet tube is the inner diameter of the jet tube Adjust the distance between the spray pipe and the bottom of the distributor to ensure the path of the spray fluidization circulation space and the jet opening angle and jet entrainment space of the incoming air flow from the spray gas pipeline. This distance is too short. If the cycle is unstable, if it is too long, it will also be unstable at the inlet section of the jet tube, both of which will produce useless power consumption.

Further, the lower end of the fluidization gas pipeline is connected with a fluidization gas inlet pipe, and the length between the lower end of the conical distributor and the fluidization gas inlet pipe is 8 to 20 times the diameter of the fluidization gas pipeline, preferably 10 to 15 times. Ensure the stability of the fluidized air flow, if it is too small, it will be unstable, and if it is too large, it will waste equipment space.

As a preference, the airflow velocity of the spray pipe is 5-200m/s, preferably 30-120m/s, if it is too low, there will be no conveying and turbulence dispersion ability, if it is too high, it will whistle, vibrate or even be damaged; the fluidization air pipe The gas flow rate in the road is 0.5-20m/s, preferably 2-8m/s. The fluidized gas produces a uniform velocity field at the bottom of the distributor, which can give proper impetus to the materials that may sink to the bottom, but also prevent the materials from falling into the pipe. The road is set according to the minimum settling velocity of solid phases of different scales and densities. This speed is suitable for most particles under 1mm in diameter.

The pipeline cutting machine includes a frame, a transmission pipe and a rotating pipe installed at both ends of the frame through bearings, a rotary knife holder arranged between the transmission pipe and the rotating pipe, a pressing mechanism, a fiber tensioner, an air intake pipe Road and power mechanism;

The rotary tool holder includes two mouthpieces respectively arranged at the opposite ends of the transmission pipe and the rotating pipe, a pair of cutterheads respectively installed at the two ends of the two mouthpieces and connected to the mouthpieces by transmission, and used to fix the pair of mouthpieces. The fixed rod of the cutter head, the connecting port communicates with the space between the cutter head; the cutter head is provided with a slot, and a blade group is installed in the slot, and the two mouthpieces are respectively connected with the transmission tube It communicates with the rotating tube and is connected by transmission; the air intake pipeline and the spray gas pipeline are respectively connected to the rotating tube and the transmission tube in a sealed rotation; the power mechanism is connected to the transmission tube by transmission; the fiber tensioner is used to Fibers are introduced between the cutter heads, and the compression mechanism is used to compress the fibers wound between the cutter heads. The power mechanism is used to drive the transmission pipe to rotate, and the air intake pipe is connected to the air flow, thereby driving the turntable knife holder to rotate, and the fiber tensioner is used to introduce the fiber between the knife disks and wind it on the blade group, and the fiber wound on the blade group is compressed. The mechanism compresses and seals the cutter head, ensuring that the airflow of the intake pipe flows on the pipeline without leakage. With the thickening of the fiber layer on the cutter head, under the action of the pressing mechanism and the blade group, the fibers are Cutting, the cut fibers are taken away by the airflow of the intake pipeline and discharged from the jet gas pipeline. The gas flow of the pipeline is adjusted according to the output, dispersion and delivery requirements of the cut fibers.

Further, in order to make the cutter head and the mouthpiece have good sealing performance, the rotary knife holder is an integrated structure, and the number of the fixing rods is 2 to 8, preferably 4; the cutter head is also provided with There are fixed half-presses for compressing the blade set.

Preferably, in order to facilitate the replacement of the cutter head, the cutter head is detachably connected to the nozzle; the cutter head is also provided with a fixed Huff-type pressing piece for pressing the blade set.

Further, the number of blades in the blade set is not less than 6 pieces.

Specifically, the pressing mechanism includes a fixed guide provided on the frame, a press rod arranged in the fixed guide, and a press wheel installed at one end of the press bar near the cutterhead. The press wheel The distance from the cutter head is 2-6 mm, preferably 3 mm, and the pressing rod provides pressing power through an air compressor.

Preferably, in order to facilitate replacement and achieve good sealing performance, the two mouthpieces are respectively connected to the transmission tube and the rotating tube through detachable connectors in a sealed transmission manner.

Further, a driven gear is installed on the transmission pipe, a transmission shaft is arranged on the frame, the power mechanism is connected to the transmission shaft, and the transmission shaft is connected to the driven gear , the power mechanism is a variable frequency speed regulating motor.

As a preference, in order to ensure the rotational connection and tightness between the transmission pipe and the rotating pipe and the intake pipeline and the spray gas pipeline respectively, the transmission pipe and the rotating pipe are respectively connected to the described The intake pipeline is connected with the injection gas pipeline.

The method for preparing the multi-scale solid-phase mixture by using the above-mentioned spray fluidizer is that the fibers cut by the pipeline cutting machine directly enter the cylinder body through the spray gas pipeline, and another scale solid-phase material is added from the material feed port, and the mixture is mixed with the stirring wheel. Under the action, the multi-scale solid-phase material circulates, disperses and mixes in the gap between the spray tube and its outer cylinder, and the multi-scale solid-phase material enters the upper cylinder space of the stirring wheel through the gap between the stirring wheel and the cylinder after being dispersed. Inside, it is output by the discharge system through the discharge port.

The beneficial effect of the utility model is that the jet fluidization machine of the utility model realizes a multi-scale solid-phase jet fluidization dispersion mixing method, which can efficiently disperse multi-scale solid phases with order-of-magnitude differences in length-to-diameter ratio Mixing and conveying into a net to obtain a uniform and stable product of dispersion and mixing. The utility model carries out structural design and spatial matching arrangement for many components of the spray fluidized bed and the settling chamber, which significantly improves the stability of production operation and product quality;

The utility model also directly connects the pipeline cutting machine with the jet fluidization equipment, effectively disperses the fibers while cutting them short, and directly transports them to the jet fluidization machine. The continuous fiber is precisely cut to length in the air flow conveying pipeline, and the cut fiber is immediately dispersed by the high-speed air flow and transported to the downstream equipment, realizing three types of continuous fiber cutting, dispersion and conveying Functions are completed simultaneously and serialized. The utility model utilizes the principle of airflow conveying and shearing dispersion, and the fiber cutting machine is cleverly designed in the pipeline, and the rotary knife holder is sealed by the tightly wound fiber layer with a certain thickness, and the pressing wheel is pressed on the blade edge. Under the action of positive pressure, the fiber is cut to a fixed length, and the cut fiber will be sheared and dispersed by the high-speed air flow immediately to realize the dilute phase transportation of the air flow, avoiding the phenomenon of clogging and entanglement.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the structure diagram of multi-scale solid-phase jet fluidized dispersion mixing device;

Figure 2 Schematic diagram of the structure of the conical distributor;

Fig. 3 is a schematic diagram of the connection structure between the suction slot and the suction outlet pipe;

Fig. 4 is a front view of the pipeline cutting machine;

Fig. 5 is a schematic diagram of the three-dimensional structure of the pipeline cutting machine;

In the figure: 1. Cylinder, 2. Conical distributor, 3. Spray pipe, 4. Stirring wheel, 5. Stirring shaft, 6. Head, 7. Motor, 8. Material outlet pipe, 9. Elbow , 10. Material takeover, 11. Settling chamber, 12. Forming cage, 13. Stripping beater, 14. Pressure roller, 15. Conveying curtain, 16. Dust cage, 17. Suction slot, 18. Suction outlet pipe, 19. Spray gas pipeline, 20. Fluidizing gas inlet pipe, 21. Fluidizing gas pipeline, 22. Feed inlet, 23. Twin screw, 24. Flange, 25. Outer cone shell, 26. Inner cone Shape, 27. Distribution hole, 28. Ventilation chamber, 30. Rack, 31. Transmission pipe, 32. Rotating pipe, 33. Interface pipe, 34. Cutter disc, 35. Blade group, 36. Intake pipeline, 37. Connecting piece, 38. transmission shaft, 39. sealing moving ring, 40. Sealing static ring, 41. Conduit, 42. Compression rod, 43. Compression wheel, 44. Fiber tensioner, 45. Hough-type pressure plate, 46. Driven gear; the dotted line in Figure 1 indicates the multi-scale solid phase circulation path.

Detailed ways

Now in conjunction with accompanying drawing, the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model.

Example 1

As shown in Figure 1, a multi-scale solid-phase jet fluidized dispersion mixing device includes a cylinder 1, a conical distributor 2, a stirring device, a discharge system and a pipeline cutting machine;

The top of the cylinder body 1 is equipped with a dish-shaped bottom head 6 through a flange 24, and its side wall is provided with a feed port 22 and a discharge port, and the discharge port is located above the feed port 22. The discharge system is connected to the discharge port;

As shown in Figure 2, the said conical distributor 2 is mounted on the lower part of the cylinder body 1 through a flange 24, and is a double-layer structure, comprising an outer conical shell 25 and an inner conical body 26, and said outer conical shell A ventilation chamber 28 is formed between the body 25 and the inner conical body 26. The inner conical body 26 is provided with a number of distribution holes 27 for distributing gas. The lower end of the outer conical shell 25 is connected with a fluidizing gas pipeline 21. The lower end of the inner cone 26 is connected with a spray gas pipeline 19, and the spray gas pipeline 19 is arranged in the fluidizing gas pipeline 21 and coaxial with it;

As shown in Figure 1, the stirring device includes a stirring shaft 5 that runs through the head 6 of the cylinder body 1, and a motor 7 and a circular stirring wheel 4 that are respectively arranged at both ends of the stirring shaft 5, and the stirring wheel 4 is arranged on the cylinder body 1. Inside, the stirring wheel 4 is located between the feed port 22 and the discharge port; the cylinder 1 is also provided with a spray pipe 3, and the upper end of the spray pipe 3 is located at the stirring wheel 4 Directly below, the lower end extends into the conical cavity of the inner cone 26, and the spray pipe 3 is coaxial with the cylinder body 1 and the spray gas pipeline 19;

Described discharge system comprises material outlet pipe 8, material takeover pipe 10, material settling chamber 11, net box 12, stripping beater 13, pressing roller 14 and delivery curtain 15 that are connected in sequence; The discharge port is connected, the material connecting pipe 10 and the material settling chamber 11 are arranged vertically downward, the material connecting pipe 10 is connected with the material outlet pipe 8 through an elbow 9 with a smooth inner wall, and the material settling chamber 11 is a one-dimensional or two-dimensional expansion shape from top to bottom (the opening cross-section is oblong when it is one-dimensional expansion, and its opening cross-section is oval when it is two-dimensional expansion), the size of the lower part of the material settling chamber 11 is the same as the The entrance of the net-forming box 12 described above is matched;

As shown in Figure 3, a dust cage 16 is installed in the described netting box 12, and the center of the dust cage 16 is provided with an upward suction slot 17, and the dust cage 16 is also provided with a 17 communicated suction outlet pipe 18.

As shown in Figures 4 and 5, the pipeline cutting machine includes a frame 30, a transmission tube 31 and a rotating tube 32 installed at both ends of the frame 30 through bearings, and a turntable arranged between the transmission tube 31 and the rotating tube 32 Tool holder, pressing mechanism, fiber tensioner 44, air intake pipeline 36 and power mechanism;

The turntable tool holder includes two mouthpieces 33 respectively arranged at opposite ends of the transmission pipe 31 and the rotating pipe 32, a pair of cutterheads 34 and a pair of mouthpieces 34 and The fixed rod for fixing the pair of cutterheads 34, the mouthpiece communicates with the space between the cutterheads 34, and the two mouthpieces 33 are respectively connected to the transmission pipe 31 and the rotating pipe through detachable connectors 37. 32 sealed transmission connection; the cutter head 34 is provided with a slot, and a blade set 35 is installed in the slot, and the two interface pipes 33 are respectively communicated with the transmission pipe 31 and the rotation pipe 32, and are connected by transmission; The transmission pipe 31 and the rotating pipe 32 are both sealed and rotated connected with the air intake pipeline 36 and the spray gas pipeline 19 through the sealing dynamic ring 39 and the sealing static ring 40; the fiber tensioner 44 is used to Fibers are introduced between the cutter heads 34 , and the compression mechanism is used to compress the fibers wound between the cutter heads 34 .

The rotary knife rest is an integrated structure, and the number of the fixed rods is 2 to 8, preferably 4; the knife disc 34 is also provided with a fixed Huff-type pressing piece 45 for pressing the blade group 35 . The number of blades in the blade set 35 is not less than 6 pieces

Described pressing mechanism comprises the fixed conduit 41 that is arranged on the frame 30, is arranged on the holddown rod 42 in the fixed conduit 41 and is installed on the holddown wheel 43 of one end of the holddown rod 42 near cutterhead 34, and described The distance between the pressing wheel 43 and the cutter head 34 is 2-6 mm, preferably 3 mm, and the pressing rod 42 provides pressing power through an air compressor.

A driven gear 46 is installed on the transmission pipe 31, a transmission shaft 38 is arranged on the frame 30, the power mechanism is connected with the transmission shaft 38, and the transmission shaft 38 is connected to the driven shaft 38. Gear 46 is connected in transmission, and the described power mechanism is a variable frequency speed regulating motor.

Its working principle is as follows: use the power mechanism to drive the transmission tube 31 to rotate, thereby driving the turntable knife holder to rotate, the air intake pipeline 36 is connected to the jet air flow, and the fiber tensioner 44 is used to introduce the fiber between the cutter heads 34 and wrap it around the blade group 35 Above, the fiber wound on the blade group 35 is compressed by the pressing mechanism, and produces a sealing effect on the cutter head 34, ensuring that the airflow of the intake pipe flows on the pipeline without leakage. thick, under the action of the pressing mechanism and the blade group 35, the fiber is cut, and the cut fiber is taken away by the jet air flow, and is discharged by the jet gas pipeline 19, and the gas flow rate of the pipeline depends on the output of the cut fiber, Dispersion and delivery requirements are adjusted.

The chopped fibers are conveyed into the jet air pipeline 19 by the jet air flow, and enter the jet pipe 3 through the conical distributor 2, and make it achieve the turbulent shear dispersion of the air flow. The stirring wheel 4 is arranged on the upper part of the spray pipe 3, which prevents the high-speed air flow from the spray pipe 3 from directly bringing the fiber to the material outlet pipe 8, and the stirring wheel 4 partitions the flow field in the spray fluidized bed And form the circulating flow field (shown in dotted line in Fig. 1), the air circulation flow field of jet fluidization has guaranteed that another scale material from the feed port 22 moves downwards, and disperses with the fiber, without dispersing The settling velocity of the material is high, that is, the air velocity required for upward suspension is high. Therefore, only well-dispersed and mixed materials can pass through the gap between the stirring wheel 4 and the cylinder 1 within the operating air flow range, and the upper space of the stirring wheel 4 is moderate. After circulating and mixing, it is discharged from the material outlet pipe 8. The material discharged from the material outlet pipe 8 enters the netting box 12 through the settling chamber 11, and is laid by the dust cage 16 in the netting box 12. The suction groove 17 located in the dust cage 16 can adjust the dust cage 16 to form a net and distribute evenly. The suction outlet pipe 18 discharges the air sucked in the suction groove 17 out of the system, and finally the stripping beater 13 strips the material on the dust cage 16, and transfers it to the pressure roller 14, and then sends it out through the conveying curtain 15.

The angle γ between the expanded contour line of the material settling chamber 11 and the vertical line is 3°-15°, preferably 6°-10°.

A twin-screw 23 is arranged inside the feed port 22; the fibers include natural fibers or chemical fibers.

The diameter of the spray pipe 3 is 0.2 to 0.35 times the diameter of the cylinder 1, preferably 0.25 to 0.3 times, and the diameter of the fluidizing gas pipeline 21 is 0.4 to 1.2 times the diameter of the spray pipe 3, preferably 0.8 to 0.3 times. 1 time; the diameter of the circular stirring wheel 4 is 1.1 to 1.5 times, preferably 1.2 to 1.4 times, the diameter of the spout tube 3 .

Several distribution holes 27 are evenly distributed on the inner cone 26 to form a distribution hole 27 array, and the diameter of the distribution holes 27 is 1-5mm, preferably 1.5-3mm.

The cone angle α of the conical distributor 2 is 20° to 160°, preferably 30° to 120°; the distance between the lower edge of the inner cone and the lower edge of the spray tube is 3 to 10° of the inner diameter of the spray gas pipeline. times.

The lower end of the fluidization gas pipeline 21 is connected with a fluidization gas inlet pipe 20, and the length between the lower end of the conical distributor 2 and the fluidization gas inlet pipe 20 is 8 to 20 times the diameter of the fluidization gas pipeline 21 , preferably 10 to 15 times.

The gas flow velocity of the spray pipe 3 is 5-200m/s, preferably 30-120m/s, and the gas flow velocity in the fluidizing gas pipeline 21 is 0.5-20m/s, preferably 2-8m/s.

Described motor 7 is a frequency-variable speed-regulating motor, and twin-screw 23, suction blower, dust cage 16, stripping beater 13, conveying curtain 15 also all adopt frequency-variable speed-regulating motor to drive in the device.

Example 2

As an improvement of Embodiment 1, in order to facilitate the replacement of the cutterhead 34, the cutterhead 34 is detachably connected to the nozzle; slice 45. Other structures are with embodiment 1.

It should be noted that the embodiments of the present utility model are only used to illustrate the technical solution of the present utility model and not to limit it. Other modifications or equivalent replacements made by those skilled in the art to the solution of the utility model, as long as they do not depart from the technology of the utility model The spirit and scope of the scheme should be included in the claims of the present utility model.

Claims (9)

1. prepare a spouted fluidized machine for multiple dimensioned solid-phase mixture, it is characterized in that: comprise cylindrical shell (1), conical distributor (2), agitating device, discharge system and pipeline cutting cutting mill;

Described cylindrical shell (1) top is provided with end socket (6), its sidewall is provided with charging aperture (22) and discharging opening, described discharging opening is positioned at the top of charging aperture (22), and described discharge system and described discharging opening are in succession;

Described conical distributor (2) is arranged on cylindrical shell (1) bottom, for double-decker, comprise outer conical shell (25) and inner cone body (26), breather chamber (28) is formed between described outer conical shell (25) and inner cone body (26), described inner cone body (26) offers the distribution hole (27) of some distributing gas, described outer conical shell (25) lower end is connected with fluidized gas pipeline (21), the lower end of described inner cone body (26) is connected with spouted air pipe (19), described spouted air pipe (19) is arranged in described fluidized gas pipeline (21), and it is coaxial with it,

Described agitating device comprises the shaft (5) running through cylindrical shell (1) end socket (6) and the motor (7) being separately positioned on shaft (5) two ends and circular stirring wheel (4), described stirring wheel (4) is arranged in cylindrical shell (1), and described stirring wheel (4) is positioned between described charging aperture (22) and discharging opening; Spouted pipe (3) is also provided with in described cylindrical shell (1), described spouted pipe (3) upper end is positioned at immediately below described stirring wheel (4), lower end extends in inner cone body (26) conical cavity, and described spouted pipe (3) is coaxial with cylindrical shell (1); Described spouted air pipe is connected with described pipeline cutting cutting mill.

2. the spouted fluidized machine of the multiple dimensioned solid-phase mixture of preparation according to claim 1, is characterized in that: described discharge system comprise connect in turn material outlet pipe (8), material adapter (10), material expansion chamber (11), become net cage (12), peel off hired roughneck (13), pressure roller (14) and convoying curtain (15); Described material outlet pipe (8) is connected with described discharging opening, described material adapter (10) and material expansion chamber (11) are arranged straight down, described material adapter (10) is connected with the elbow (9) of material outlet pipe (8) by inner wall smooth, described material expansion chamber (11) is from top to bottom in one dimension or two-dimensional expansion shape, and described material expansion chamber (11) lower dimension matches with the entrance of described one-tenth net cage (12);

In described one-tenth net cage (12), dust cage (16) is installed, described dust cage (16) center is provided with the air draught groove (17) of opening upwards, and described dust cage (16) is also provided with the air draught outlet (18) be communicated with described air draught groove (17).

3. the spouted fluidized machine of the multiple dimensioned solid-phase mixture of preparation according to claim 2, it is characterized in that: described spouted pipe (3) diameter is 0.2 ~ 0.35 times of described cylindrical shell (1) diameter, described fluidized gas pipeline (21) diameter is 0.4 ~ 1.2 times of spouted pipe (3) diameter; The diameter of described circular stirring wheel (4) is 1.1 ~ 1.5 times of spouted pipe (3) diameter; The outline line that described material expansion chamber (11) is expanded and vertical curve angle are 3 ° ~ 15 °; Twin-screw (23) is provided with in described charging aperture (22).

4. the spouted fluidized machine of the multiple dimensioned solid-phase mixture of preparation according to claim 1, it is characterized in that: some described distribution holes (27) are evenly distributed on inner cone body (26) and form distribution hole (27) array, and described distribution hole (27) diameter is 1 ~ 5mm; The cone angle of described conical distributor (2) is 20 ° ~ 160 °; Distance intermarginal under inner cone body (26) lower edge and spouted pipe (3) is 3 ~ 10 times of spouted air pipe (19) internal diameter.

5. the spouted fluidized machine of the multiple dimensioned solid-phase mixture of preparation according to claim 1, it is characterized in that: described fluidized gas pipeline (21) lower end is connected with inlet for fluidization air pipe (20), between described conical distributor (2) lower end to inlet for fluidization air pipe (20), length is 8 ~ 20 times of described fluidized gas pipeline (21) diameter.

6. the spouted fluidized machine of the multiple dimensioned solid-phase mixture of preparation according to claim 1 and 2, is characterized in that: rotating disk knife rest, hold-down mechanism, fiber tension device (44), air inlet pipeline (36) and actuating unit that described pipeline cutting cutting mill comprises frame (30), is arranged on the transmission tube (31) at frame (30) two ends and rotates pipe (32), be arranged on transmission tube (31) and rotate between pipe (32) respectively by bearing;

Described rotating disk knife rest comprise be separately positioned on transmission tube (31) and rotate pipe (32) opposite side two mouthpieces (33), be arranged on two mouthpiece (33) two ends respectively, and a pair cutterhead (34) be dynamically connected with adapter oral instructions and for fixing this fixed bar to cutterhead (34), the space between described adapter mouth with cutterhead (34) is communicated with; (34) offer caulking groove with described cutterhead, set of blades (35) is installed in described caulking groove, two described mouthpieces (33) are managed (32) with transmission tube (31) be communicated with being rotated respectively, and are in transmission connection; Described air inlet pipeline (36) and spouted air pipe (19) manage (32) with rotation respectively and transmission tube (31) sealed rotational is connected; Described actuating unit and described transmission tube (31) are in transmission connection.

7. the spouted fluidized machine of the multiple dimensioned solid-phase mixture of preparation according to claim 6, is characterized in that: described cutterhead (34) and adapter mouth are integrated or removably connect; Described cutterhead (34) is also provided with the fixing Hafu-type compressing tablet (45) for compressing set of blades (35); Described transmission tube (31) is all connected with described air inlet pipeline (36) and spouted air pipe (19) with stationary seal ring (40) by moving sealing ring (39) respectively with rotation pipe (32).

8. the spouted fluidized machine of the multiple dimensioned solid-phase mixture of preparation according to claim 7, it is characterized in that: described hold-down mechanism comprises the A/C (41) be arranged in frame (30), is arranged on the compressor arm (42) in A/C (41) and is arranged on the contact roller (43) of compressor arm (42) near one end of cutterhead (34), distance between described contact roller (43) and described cutterhead (34) is 2 ~ 6mm, and described compressor arm (42) provides compression power by air compressor.

9. the spouted fluidized machine of the multiple dimensioned solid-phase mixture of preparation according to claim 8, it is characterized in that: described transmission tube (31) is provided with driven gear (46), described frame (30) is provided with power transmission shaft (38), described actuating unit and described power transmission shaft (38) are in transmission connection, described power transmission shaft (38) and described driven gear (46) are in transmission connection, and described actuating unit is frequency control motor.