阅读说明：本技术 逆流式喷雾干燥设备 (Counter-flow spray drying equipment ) 是由 容刚 杨海东 胡雄彪 于 2021-08-16 设计创作，主要内容包括：本发明提供了一种逆流式喷雾干燥设备,包括塔体,所述塔体的顶端设置有雾化进料器,底端为倒锥形并设置有出料口,所述塔体内设置有热风口,所述雾化进料器的出雾口设置有多个,竖直朝下并呈环形排列分布,所述热风口同样设置多个,竖直朝上并呈环形排列分布,所述热风口所在的环线与所述出雾口所在的环线错位且共圆心。本发明通过环形错位设置的出雾口和热风口,使得从出雾口喷出的雾滴环形向下流动,而从热风口喷出的热风环形向上流动,形成错位逆流,在增大接触面积的同时减少接触时间,改善了塔体内的气流状况,提升了产品干燥成型的效果和效率。(The invention provides a counter-flow spray drying device which comprises a tower body, wherein an atomization feeder is arranged at the top end of the tower body, the bottom end of the tower body is in an inverted cone shape and is provided with a discharge hole, a plurality of hot air holes are formed in the tower body, a plurality of fog outlets of the atomization feeder are vertically downward and annularly arranged, the hot air holes are also vertically upward and annularly arranged, and a loop line where the hot air holes are located and a loop line where the fog outlets are located are staggered and share the same center of a circle. According to the invention, through the fog outlets and the hot air outlets which are arranged in the annular staggered manner, fog drops sprayed out of the fog outlets flow downwards in an annular manner, and hot air sprayed out of the hot air outlets flow upwards in an annular manner to form staggered countercurrent, so that the contact area is increased, the contact time is shortened, the air flow condition in the tower body is improved, and the drying and forming effect and efficiency of products are improved.)

1. The utility model provides a counter-current spray drying equipment, includes the tower body, the top of tower body is provided with the atomizing feeder, and the bottom is the back taper and is provided with the discharge gate, be provided with hot-blast mouthful in the tower body, its characterized in that, the play fog mouth of atomizing feeder is provided with a plurality ofly, and vertical downwardly arranged and be the annular and distribute, the hot-blast mouthful sets up a plurality ofly equally, and vertical up arranges the distribution to be the annular, the vertical face of the loop line at hot-blast mouthful place with the vertical face of the loop line at play fog mouth place is centre of a circle and dislocation distribution altogether.

2. A counter flow spray drying device according to claim 1 wherein the vertical plane of the loop line of the hot air ports is on the inner layer and the vertical plane of the loop line of the mist outlets is on the outer layer.

3. The countercurrent spray drying equipment according to claim 1, wherein the mist outlet and the hot air outlet are provided with multiple layers, and the vertical surface of the circular line where the hot air outlet is located and the vertical surface of the circular line where the mist outlet is located are distributed in a staggered manner at intervals.

4. A counter flow spray drying apparatus according to claim 3 wherein the hot air outlets are arranged in a loop that decreases layer by layer from outside to inside to form a tapered surface, and the mist outlets are arranged in a loop that also decreases layer by layer from outside to inside to form a tapered surface.

5. A counter flow spray drying apparatus according to claim 1 wherein the hot air port is connected to a hot air main, the hot air main being connected in sequence to a blower, a filter dust collector and a heater.

6. A counter flow spray drying device according to claim 1, wherein the lower part of the tower body is further provided with an exhaust port, the exhaust port is connected with a cyclone dust collector through an exhaust pipe, and an outlet of the cyclone dust collector is connected with an exhaust device through a draught fan.

7. A counter flow spray drying device according to claim 1 wherein the tower body is mounted on a travelling car, the tower body is fixed by a support frame on the travelling car, a collection box is mounted on the travelling car, a feed plate is mounted on the top of the collection box, and the feed plate is in butt joint with the discharge port.

8. A counter flow spray drying apparatus according to claim 7 wherein said feed plate is in the form of a plurality of apertures.

9. A counter flow type spray drying device according to claim 7, wherein the moving trolley is further provided with a cleaning box, a support seat is arranged in the cleaning box, a rotating motor is movably connected to the support seat, the end of an output shaft of the rotating motor is connected with the bottom end of a vertically arranged cleaning rotating shaft, the top end of the cleaning rotating shaft is connected with a plurality of cleaning strips, the cleaning strips are made of soft materials, the inverted conical surface at the bottom end of the tower body is cleaned through the cleaning strips, atomized particles adhered to the wall enter the cleaning box to be recycled, the cleaning rotating shaft is movably connected with a shaft sleeve on the cleaning box, a lifting cylinder is arranged in the cleaning box, and the lifting cylinder is connected with the rotating motor.

10. A counter flow spray drying apparatus according to claim 9 wherein the travelling carriage is provided with a guide rail, and the collection tank and the cleaning tank are both movably disposed on the guide rail to switch the collection tank or the cleaning tank to dock with the tower.

Technical Field

The invention relates to the technical field of drying, in particular to a counter-flow spray drying device.

Background

The spray drying tower is drying equipment which separates raw material liquid into fog drops in an atomizer and obtains powder-shaped products by a method of directly contacting the fog drops with hot air and the like, has the advantages of high drying speed, high production efficiency, convenience in operation, suitability for large-scale production and the like, and is widely applied to drying in the fields of biological pesticides, medicines, food microorganisms and the like. The existing spray drying tower generally enables spray and hot air to be fed in the same direction to form the same-direction flow, so that sprayed fog drops are difficult to contact with the hot air in a large area in a very short time, the drying effect is poor, and the quality of produced products is difficult to meet the requirements.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a spray drying tower which is used for realizing reverse circulation of spray and hot air and is distributed annularly so as to increase the contact area of fog drops and the hot air and improve the drying and forming effect.

In order to achieve the purpose, the invention provides a counter-flow spray drying device which comprises a tower body, wherein an atomization feeder is arranged at the top end of the tower body, the bottom end of the tower body is inverted-cone-shaped and is provided with a discharge hole, a plurality of hot air holes are formed in the tower body, a plurality of fog outlets of the atomization feeder are vertically downward and annularly arranged, a plurality of hot air holes are also vertically upward and annularly arranged, and the vertical surface of a circular line where the hot air holes are located and the vertical surface of a circular line where the fog outlets are located are concentric and distributed in a staggered manner.

Furthermore, the vertical surface of the circular line where the hot air port is located on the inner layer, and the vertical surface of the circular line where the fog outlet is located on the outer layer.

Furthermore, the fog outlet and the hot air outlet are provided with multiple layers, and the vertical surface of the circular line where the hot air outlet is located and the vertical surface of the circular line where the fog outlet is located are distributed in a staggered mode at intervals.

Furthermore, the loop line of the hot air port is gradually reduced from outside to inside to form an inverted conical surface, and the loop line of the mist outlet is also gradually reduced from outside to inside to form the inverted conical surface.

Furthermore, the hot air port is connected with a hot air main pipe, and the hot air main pipe is sequentially connected with a blower, a filter dust collector and a heater.

Further, the lower part of tower body still is provided with the gas vent, the gas vent passes through the blast pipe and is connected with cyclone, cyclone's export is connected with exhaust apparatus through the draught fan.

Further, the tower body is arranged on a movable trolley, the tower body is fixed through a support frame on the movable trolley, a collecting box is arranged on the movable trolley, a feeding plate is arranged on the top layer of the collecting box, and the feeding plate is in butt joint with the discharge hole.

Further, the feeding plate is in a structural form consisting of a plurality of small holes.

Further, still be provided with the cleaning box on the travelling car, be provided with the supporting seat in the cleaning box, swing joint has the rotating electrical machines on the supporting seat, the output shaft tip of rotating electrical machines is connected with the clean rotation axis bottom of vertical arrangement, the top of clean rotation axis is connected with a plurality of clean strips, clean strip adopts soft material, through clean strip is right the bottom back taper of tower body is clean, makes glutinous wall atomizing granule get into the cleaning box and retrieves, clean rotation axis with axle sleeve swing joint on the cleaning box, be provided with the lift cylinder in the cleaning box, the lift cylinder with the rotating electrical machines is connected.

Furthermore, a guide rail is arranged on the movable trolley, and the collecting box and the cleaning box are movably arranged on the guide rail so as to switch the butt joint of the collecting box or the cleaning box and the tower body.

The scheme of the invention has the following beneficial effects:

according to the counter-flow spray drying equipment provided by the invention, through the annular staggered mist outlet and the annular staggered hot air outlet, the fog drops sprayed out of the mist outlet flow downwards annularly, and the hot air sprayed out of the hot air outlet flows upwards annularly to form staggered counter-flow, so that the contact area is increased, the contact time is reduced, the drying and forming effects of products are improved, in addition, the hot air is dried in a counter-flow manner with the fog drops and then flows in the same direction with the fog drops, the fog drops and powder products are driven to flow to the discharge hole at the bottom end of the tower body, the air flow condition in the tower body is improved, and the drying and forming efficiency is improved;

according to the invention, the cleaning box is arranged on the movable trolley, the cleaning rotating shaft capable of lifting and rotating and the cleaning strips connected to the top end of the cleaning rotating shaft are arranged in the cleaning box, the cleaning rotating shaft is rotated to drive the cleaning strips to fly and throw after the top end of the cleaning rotating shaft moves to the corresponding position of the bottom end of the tower body, the inverted cone at the bottom end of the tower body is cleaned, atomized particles adhered to the wall enter the cleaning box to be recovered without blocking a discharge hole, and the convenience and the efficiency of cleaning the tower body are improved;

other advantages of the present invention will be described in detail in the detailed description that follows.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a tower body and a movable trolley of the invention;

FIG. 3 is a schematic view of the structure of the cleaning tank of the present invention.

[ description of reference ]

1-a tower body; 2-atomizing feeder; 3-discharging port; 4-hot air port; 5-a mist outlet; 6-a hot air main pipe; 7-a blower; 8-a filter dust remover; 9-a heater; 10-an exhaust port; 11-an exhaust pipe; 12-a cyclone dust collector; 13-a draught fan; 14-an exhaust; 15-moving the trolley; 16-a support frame; 17-a collection box; 18-a feed plate; 19-a clean box; 20-a support seat; 21-a rotating electrical machine; 22-cleaning the rotating shaft; 23-a cleansing bar; 24-a shaft sleeve; 25-guide rail.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a locked connection, a releasable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, an embodiment of the present invention provides a counter-flow spray drying apparatus comprising a tower body 1. Wherein, the bottom end of the tower body 1 is in an inverted cone shape to guide the concentrated feeding of the dried powder particle products. The top of tower body 1 is provided with atomizing feeder 2, and the bottom is provided with discharge gate 3, is provided with hot-blast mouth 4 in the tower body 1 simultaneously. As the improvement, the fog outlet 5 on the atomizing feeder 2 is provided with a plurality of vertically downward and annularly arranged, the hot air outlet 4 is also provided with a plurality of vertically upward and annularly arranged, and is specifically located at the junction position of the inverted cone tower body 1 and the cylindrical tower body 1. Wherein, the vertical face of the loop line of hot-blast hole 4 and the vertical face of the loop line of fog outlet 5 are concentric and distributed in a staggered manner, the fog drops sprayed from fog outlet 5 flow downwards in an annular manner, and the hot air sprayed from hot-blast hole 4 flows upwards in an annular manner to form a staggered countercurrent manner, so that the contact time is shortened while the contact area is increased, and the drying and forming effect of the product is better.

In this embodiment, the vertical face of the circular line at hot air port 4 is located the inlayer, and the vertical face of the circular line at fog outlet 5 is located the skin, and hot-blast from the inlayer upflow to the tower body 1 top after, can follow tower body 1 both sides downward flow equally, finally draw forth from tower body 1 bottom. Therefore, the hot air is firstly dried in a counter-current way with the fog drops and then flows in the same direction with the fog drops, and the fog drops and the powder products are driven to flow to the discharge hole 3 at the bottom end of the tower body 1.

As a further improvement, in this embodiment, the mist outlet 5 and the hot air outlet 4 are both provided with multiple layers, a vertical surface of a loop line where the hot air outlet 4 is located and a vertical surface of a loop line where the mist outlet 5 is located are alternately distributed, and the innermost layer and the outermost layer are the hot air outlets 4. Multilayer countercurrent of hot air and fog drops is formed, the contact area of the fog drops and the hot air is larger under the condition that the total flow of the atomizing feeder 2 is constant by adopting a multilayer countercurrent mode, and both sides of the fog drops can be contacted with the hot air, so that the drying and forming effect is further improved.

As a further improvement, the loop line of the hot air port 4 is lowered layer by layer from outside to inside to form an inverted conical surface, and the loop line of the mist outlet 5 is also lowered layer by layer from outside to inside to form a consistent inverted conical surface, so that the contact stroke of each layer of mist droplets and hot air and the stroke of each layer of mist droplets falling into the inverted conical bottom end of the tower body 1 are consistent, and the consistency of drying and forming of products is kept as much as possible.

In the present embodiment, the hot air port 4 is connected to a hot air header 6, and the hot air header 6 is provided with a blower 7, a filter dust collector 8 and a heater 9. Under the action of the blower 7, outside air enters the hot air main pipe 6, passes through a filter screen of the filter dust collector for dust removal, is heated by the heater 9 into dry hot air, is finally guided into the tower body 1 along the hot air main pipe 6, and is uniformly sprayed upwards through the hot air ports 4.

In this embodiment, the lower portion of the tower body 1 is further provided with an exhaust port 10, and the exhaust port 10 is connected to a cyclone 12 through an exhaust pipe 11 to lead out the hot air dried in the tower body 1. Wherein, the outlet of the cyclone dust collector 12 is connected with an exhaust device 14 through a draught fan 13, and hot air containing partial solid particles is discharged outwards through the exhaust device 14 after being dedusted by the cyclone dust collector 12. In other embodiments, the hot air collecting pipe 6 can be connected to form recycling.

As further improvement, the tower body 1 is arranged on the movable trolley 15 and fixed through the support frame 16 on the movable trolley 15, so that the tower body 1 can be transferred between sites, and the use flexibility is improved. Meanwhile, a collecting box 17 is arranged on the movable trolley 15, a feeding plate 18 is arranged on the top layer of the collecting box, the feeding plate 18 is communicated with the discharge port 3 in a butt joint mode, powder products are directly collected through the detachable collecting box 17, and the use convenience is further improved.

Wherein, the feeding plate 18 is a structural form composed of a plurality of small holes, has a plurality of specifications and is detachably arranged at the top end of the collecting box 17. The spray drying discharging speed is controlled by selecting the feeding plates 18 with different specifications, so that the powder particle products are prevented from being adhered to the side wall of the bottom end of the tower body 1 due to too slow discharging, and the excessive quick discharging easily causes the collection overflow.

Meanwhile, as shown in fig. 2 and 3, as a further improvement, a cleaning box 19 is further arranged on the movable trolley 15, a supporting seat 20 is arranged in the cleaning box 19, a rotating motor 21 is movably connected to the supporting seat 20, the end of an output shaft of the rotating motor 21 is connected with the bottom end of a vertically arranged cleaning rotating shaft 22, and the rotating motor 21 drives the cleaning rotating shaft 22 to rotate. The top end of the cleaning rotating shaft 22 is connected with a plurality of cleaning strips 23, and the cleaning strips 23 are made of soft materials. Wherein, the cleaning rotating shaft 22 is movably connected with a shaft sleeve 24 on the cleaning box 19 to rotatably support and guide the cleaning rotating shaft 22. The cleaning box 19 is provided therein with a lifting cylinder (not shown) connected to the rotary motor 21 for driving and controlling the lifting of the rotary motor 21 and the cleaning rotary shaft 22.

When the bottom end of the tower body 1 needs to be cleaned, the cleaning box 19 is in butt joint with the discharge hole 3, the lifting cylinder drives the rotating motor 21 and the cleaning rotating shaft 22 to ascend, and the top end of the cleaning rotating shaft 22 enters the tower body 1 from the discharge hole 3. At this time, the cleaning strips 23 at the tip of the cleaning rotating shaft 22 are not rotated and thrown, and thus can smoothly enter the tower body 1. After the top end of the cleaning rotating shaft 22 reaches a designated position, the cleaning rotating shaft is driven by the rotating motor 21 to rotate, the cleaning strip 23 is driven to rotate and expand, the inverted conical surface at the bottom end of the tower body 1 is cleaned, and atomized particles adhered to the wall enter the cleaning box 19 to be recovered without blocking the discharge hole 3, so that the use of equipment is influenced.

Wherein, be provided with guide rail 25 on the travelling car 15, collecting box 17 and clean case 19 are all movable to be set up on guide rail 25, when needing to clean tower body 1 bottom, remove collecting box 17 aside to it can to make clean case 19 dock with discharge gate 3.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.