CN209917284U

CN209917284U - Vacuum belt type drying machine

Info

Publication number: CN209917284U
Application number: CN201920636636.3U
Authority: CN
Inventors: 战文; 李海华; 肖发君; 陈志强
Original assignee: Inner Mongolia Hengguang Pharmaceutical Co Ltd
Current assignee: Inner Mongolia Hengguang Pharmaceutical Co Ltd
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2020-01-10
Anticipated expiration: 2029-05-06

Abstract

The utility model discloses a vacuum belt dryer, which comprises a cylinder body, a plurality of layers of conveyor belts arranged in the cylinder body, a feeding system and a discharging system; a conveying motor of the conveyor belt synchronously conveys the slurry raw materials from a feeding end to a discharging end; the feeding system supplies materials by screw pumps and feeding branch pipelines which have the same number as the layers of the transmission belt, the spreading motor drives a swing arm which extends into the feeding end of the layer transmission belt on a vertical shaft to swing in a reciprocating manner through a crank, and the swing arm is communicated with a material spitting nozzle of each feeding branch pipeline to uniformly distribute the slurry raw materials on the transmission belt; the discharging system comprises a discharging pipe, a screw rod is arranged in the discharging pipe, and a crusher, a first discharging valve, a middle storage tank, a second discharging valve and a powder outlet are sequentially arranged on the lower side of the discharging end of the discharging pipe. The automatic drying device can realize automatic continuous drying, has high drying efficiency, uniform distribution of slurry raw materials, smooth discharging of dried finished products, convenient maintenance and overhaul operation and good product quality after drying.

Description

Vacuum belt type drying machine

Technical Field

The utility model belongs to the technical field of drying equipment, especially, vacuum belt dryer.

Background

The traditional Chinese medicine extraction process comprises the steps of leaching, concentrating and drying, wherein the concentrated traditional Chinese medicine extract is viscous paste which is not high temperature resistant, has high viscosity and is easy to agglomerate, and some of the concentrated traditional Chinese medicine extract belongs to thermoplastic or thermosensitive materials; and thus are not suitable or capable of being dried using conventional dryers (e.g., spray dryers, ovens). And the freeze drying technology (such as a low-temperature drying machine) is adopted, so that the drying time is long, the drying efficiency is low, the energy consumption is high, the drying degree of the product is uneven, and the product quality is influenced. Meanwhile, the purpose of continuous drying cannot be achieved by the conventional drying machine.

Therefore, the vacuum belt dryer is a commonly used device for the traditional Chinese medicine extraction process, such as: chinese patent 201721463388.4 discloses a vacuum spray belt dryer, which comprises a cylinder, a feeding system and a discharging system, wherein multiple layers of conveyor belts are arranged in the cylinder, a heating plate is arranged below each layer of conveyor belt, and an external vacuum pumping system is arranged below each layer of conveyor belt. The conveying directions of the upper and lower adjacent conveyor belts are opposite, and the conveying head end of the next layer of conveyor belt exceeds the conveying tail end of the previous layer of conveyor belt by a certain distance. The feeding system comprises a feeding pipeline, a feeding pump and a spray dryer, the feeding system sprays the slurry raw materials on the uppermost layer of the conveyor belt, then the raw materials are sequentially conveyed to the lowermost layer of the conveyor belt from the upper layer of the conveyor belt, and finally the dried traditional Chinese medicine extract product is output by the discharging system.

The disadvantages of the above patent technology are: 1) the raw materials are sprayed on the uppermost layer of the conveyor belt, the spraying height is small, the spray drying effect is not obvious, the slurry raw materials are easily sprayed to the two sides of the conveyor belt and fall to the bottom of the barrel body, waste is caused, and the slurry raw materials need to be cleaned regularly; 2) in the process that the dried raw materials fall from the upper layer to the lower layer, some raw materials are caked and easily fall outside the conveyor belt, and in addition, the raw materials falling on the lower layer conveyor belt are not uniformly distributed, so that the drying effect is influenced; 3) the dried material is agglomerated, and the problem of unsmooth discharging exists; 4) the diameter of the cylinder cover can reach about 3 meters, and a cylinder cover hoisting frame needs to be designed for the cylinder cover with large and heavy size during maintenance or inspection.

Disclosure of Invention

An object of the utility model is to overcome the problem that exists among the above-mentioned prior art, provide a vacuum belt drier, it can realize automatic continuous drying, and drying efficiency is high, and thick liquid raw materials cloth is even, and dry finished product ejection of compact is smooth, maintains and overhauls convenient operation, and dry back product quality is good.

The purpose of the utility model is realized like this: a vacuum belt dryer comprises a cylinder body consisting of a cylinder and cylinder covers at two ends, a multi-layer conveyor belt arranged in the cylinder body, a feeding system and a discharging system; the cylinder is provided with a vacuum pumping port, a heat source inlet and a heat source outlet; the conveying belt consists of a driving roller, a driven roller and a belt; a heating plate for lifting the upper belt is arranged between the driving roller and the driven roller, one end of the heating plate is connected with a heat source inlet through a heating pipe, and the other end of the heating plate is connected with a heat source outlet through a heat return pipe; the method is characterized in that: the driving roller of each layer of conveying belt is driven to rotate by a conveying motor which is positioned outside the cylinder body and rotates in the same direction, so that materials are synchronously conveyed from the feeding end to the discharging end; the feeding system comprises a circulating pipeline for providing raw material slurry, the front section of the circulating pipeline is a feeding pipeline, the rear section of the circulating pipeline is a return pipeline, screw pumps which are driven by a feeding motor and have the same number of layers as the layers of transmission belts in the barrel are arranged between the feeding pipeline and the return pipeline in parallel, a feeding hole of each screw pump is communicated with the feeding pipeline through a feeding valve, a discharging hole of each screw pump is communicated with the return pipeline through a discharging valve, a feeding branch pipeline is communicated between the discharging hole and the discharging valve, the feeding branch pipeline is communicated to a feeding end in the barrel, a vertical shaft with an outer end extending to the upper side or the lower side of the cylinder through a shaft sealing element is arranged in the feeding end of the barrel, swing arms extending to the upper side of each layer of the transmission belts are arranged on the vertical shaft, and a material discharging nozzle is arranged on each swing arm and; the outer side end of the vertical shaft is fixedly connected with a driving wall, a strip-shaped chute is arranged on the driving arm, a paving motor is arranged on a cylinder at a position corresponding to the outer side of the vertical shaft through a motor base, an output shaft of the paving motor is connected with a crank, and a driving end of the crank extends into the strip-shaped chute on the driving arm; the discharging system comprises a discharging pipe which is arranged at the lower part of a discharging end in the barrel body, two ends of the discharging pipe extend out of the barrel body, a screw rod driven by a screw rod motor is arranged in the discharging pipe, a material receiving port is arranged at the upper side of the discharging pipe in the barrel body, material receiving plates with two ends connected with the inner wall of the barrel are arranged at two sides of the material receiving port, and a pulverizer, a first discharging valve, a middle storage tank, a second discharging valve and a powder outlet are sequentially arranged at the lower side of the discharging end of the discharging; the rubbing crusher including smashing the room, smash the discharge end downside intercommunication of room upside import and discharging pipe, smash room downside export and first bleeder valve intercommunication, smash the indoor rubbing crusher rotor that is equipped with by the rotatory grinding motor drive that is equipped with, smash the articulated room end cover that smashes of side of room.

Preferably, a bottom slurry recovery line is provided on the lower side of the cylinder in communication with the return line.

Preferably, the first discharge valve and the second discharge valve are both electrically operated valves.

Preferably, a discharge end transparent observation window is arranged on the upper side of the discharge end of the discharge pipe.

Preferably, a storage tank transparent observation window is arranged on the side surface of the middle storage tank.

Preferably, the two ends of the outer side of the cylinder body are provided with cylinder cover hoisting frames, each cylinder cover hoisting frame comprises a cross beam, one end of each cross beam is provided with a long landing leg supported on the ground, and the other end of each cross beam is provided with a short landing leg supported on the upper part of the cylinder; the lower side surface of the cross beam is provided with a sliding chute, a lead screw driven by a lead screw motor is arranged in the sliding chute, a hoisting trolley driven by the lead screw to move along the sliding chute is arranged in the sliding chute, and a hoisting hoist is connected below the hoisting trolley.

Preferably, the crossbeam be the hollow square steel that the downside was equipped with the bar mouth, the hollow inner chamber of square steel and the lower bottom surface of bar mouth both sides constitute the spout.

Preferably, the hoisting trolley comprises a trolley body and rollers, wherein the two sides of the trolley body are pressed on the lower bottom surfaces of the two sides of the strip-shaped opening, the trolley body is provided with a threaded hole capable of being sleeved with a lead screw, the lower side of the trolley body is provided with a lifting ring, and a hoisting hoist is connected to the lifting ring.

The utility model discloses an advantage is with the beneficial effect who produces:

1) the utility model discloses a dry machine in vacuum spraying area makes traditional static drying turn into vacuum dynamic drying, can realize continuous feeding and continuous ejection of compact under the vacuum condition.

2) The drying time is short, the problems that the traditional oven is long in time and easy to denature are solved, and the drying efficiency is greatly improved.

3) The drying agent can be used for drying various liquid, slurry and paste raw materials which are high in viscosity and difficult to dry, and drying which cannot be realized by conventional spray drying is solved, and the dried product is good in color, solubility and storability and incomparable with other equipment, so that the drying quality is good.

4) The production cost is low, two operators are needed at most for one vacuum spray belt drying machine, and the labor cost is greatly reduced.

5) The utility model discloses a each layer of conveyer belt all corresponds the screw pump that sets up a feeding branch pipeline and correspond, all is equipped with feed valve and bleeder valve respectively at the feed inlet of screw pump and discharge gate, through the aperture of adjusting feed valve and bleeder valve, can realize each layer and feed uniformly, can also flexibly adjust the feeding volume on each conveying belt layer.

6) The spreading motor drives the vertical shaft to rotate in a reciprocating mode through the linkage effect of the crank and the driving wall, so that the swing arm and the material spitting nozzle are driven to swing in a reciprocating mode, slurry raw materials conveyed by the feeding branch pipeline can be uniformly dripped onto the conveying belt, the problem that the raw materials fall on two sides of the conveying belt is basically avoided, and uniform drying is facilitated.

7) The utility model discloses use the screw pump, no matter how viscous the raw materials of treating drying, he can both guarantee even feed, the problem of the pump body of jam, valve and pipeline can not appear.

8) The utility model discloses be equipped with by screw motor driven hob inside the discharging pipe, it can carry the discharge end of discharging pipe from the terminal dry good material that drops of conveyer belt, and the hob still has preliminary crushing function, so the material of slice caking also can smoothly be carried.

9) The discharge end downside of discharging pipe is equipped with the rubbing crusher, and it can be with the crushing of the material of caking, is favorable to smoothly through first bleeder valve and second bleeder valve, does not have the not unblocked problem of the ejection of compact.

10) The utility model discloses still set up cover hoist and mount frame, solved the hoist and mount problem of huge heavy cover, made things convenient for the utility model discloses a maintain and overhaul.

Drawings

Fig. 1 is a schematic view of a perspective three-dimensional structure of the vacuum belt dryer of the present invention;

fig. 2 is a schematic view of another perspective three-dimensional structure of the vacuum belt dryer of the present invention;

FIG. 3 is a schematic side view of the vacuum belt dryer of the present invention with the barrel and the barrel cover removed;

fig. 4 is a schematic perspective view of the conveyor belt of the vacuum belt dryer of the present invention;

fig. 5 is a schematic view of a three-dimensional structure of a feeding system of the vacuum belt dryer of the present invention;

FIG. 6 is an enlarged view of the portion A of FIG. 5;

FIG. 7 is an enlarged view of the portion B of FIG. 5;

fig. 8 is a schematic view of a partial three-dimensional structure of a feeding system of the vacuum belt dryer of the present invention;

fig. 9 is a schematic view of a three-dimensional structure of a discharging system of the vacuum belt dryer of the present invention;

FIG. 10 is a schematic view of the three-dimensional structure of the cover of the vacuum belt dryer of the present invention;

fig. 11 is a schematic view of the bottom perspective structure of the cover lifting frame of the vacuum belt dryer of the present invention;

fig. 12 is a schematic view of a three-dimensional structure of a hoisting trolley and a hoisting hoist of a cylinder cover hoisting frame of the vacuum belt dryer of the present invention;

fig. 13 is a schematic view of a cross beam end face sectioning three-dimensional structure of a cylinder cover hoisting frame of the vacuum belt dryer of the utility model.

In the figure: 101-cylinder, 102-cylinder, 103-cylinder cover, 104-evacuation port, 105-heat source inlet, 106-heat source outlet, 201-conveyor belt, 202-drive roller, 203-driven roller, 204-belt, 205-conveyor motor, 301-heating plate, 302-heating pipe, 303-regenerative pipe, 401-feed pipe, 402-return pipe, 403-feed motor, 404-screw pump, 405-feed port, 406-feed valve, 407-discharge port, 408-discharge valve, 409-feed branch pipe, 410-shaft seal, 411-vertical shaft, 412-swing arm, 413-spit nozzle, 414-hose, 415-drive wall, 416-strip chute, 417-motor base, 418-spreading motor, 419-crank, 420-bottom slurry recovery pipeline, 501-discharge pipe, 502-screw motor, 503-screw rod, 504-material receiving port, 505-material receiving plate, 506-pulverizer, 507-first electric discharge valve, 508-middle storage tank, 509-second electric discharge valve, 510-powder outlet, 511-pulverizing chamber, 512-pulverizing motor, 513-pulverizer rotor, 514-pulverizing chamber end cover, 515-discharge end transparent observation window, 516-storage tank transparent observation window, 601-cross beam, 602-long support leg, 603-short support leg, 604-screw motor, 605-screw, 606-hoisting trolley, 607-hoisting gourd, 608-strip-shaped port, 609-bottom surface, 610-vehicle body, 611-roller, 612-threaded hole, 613-suspension ring.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 4, a vacuum belt dryer comprises a cylinder body 101 composed of a cylinder 102 and cylinder covers 103 at two ends, 8 layers of conveyor belts 201 arranged inside the cylinder body 101, a feeding system and a discharging system; a vacuum pumping port 104, a heat source inlet 105 and a heat source outlet 106 are arranged on the cylinder 102; the conveying belt 201 is composed of a drive roller 202, a driven roller 203, and a belt 204; a heating plate 301 for lifting the upper belt 204 is arranged between the driving roller 202 and the driven roller 203, one end of the heating plate 301 is connected with the heat source inlet 105 through a heating pipe 302, and the other end of the heating plate 302 is connected with the heat source outlet 106 through a heat return pipe 303; the driving roller 202 of each layer of the conveyor belt 201 is driven by a conveying motor 205 which is positioned outside the cylinder body 101 and rotates in the same direction to synchronously convey materials from the feeding end to the discharging end.

As shown in fig. 5 to 8, the feed system includes a circulation line for supplying a raw material slurry, the front end of the circulation line is a feed line 401, the rear end of the circulation line is a return line 402, 8 screw pumps 404 driven by a feeding motor 403 are arranged in parallel between the feeding pipeline 401 and the return pipeline 402, a feeding port 405 of each screw pump 404 is communicated with the feeding pipeline 401 through a feeding valve 406, a discharging port 407 of each screw pump 404 is communicated with the return pipeline 402 through a discharging valve 408, a feeding branch pipeline 409 is communicated between the discharge port 407 and the discharge valve 408, the feeding branch pipeline 409 is communicated to the feeding end in the cylinder 101, a vertical shaft 411 with an outer end extending to the upper side of the cylinder 101 through a shaft seal 410 is arranged inside the feeding end of the cylinder 101, a swing arm 412 extending to the upper surface of each layer of the conveyor belt 201 is arranged on the vertical shaft 411, a material spitting nozzle 413 is arranged on each swing arm 412, and the material spitting nozzle 413 is communicated with a feeding branch pipeline 409 at a corresponding position through a hose 414; the outer end of the vertical shaft 411 is fixedly connected with a driving wall 415, the driving arm 415 is provided with a strip-shaped sliding groove 416, the cylinder 102 at the corresponding position outside the vertical shaft 411 is provided with a material spreading motor 418 through a motor base 417, the output shaft of the material spreading motor 418 is connected with a crank 419, and the driving end of the crank 419 extends into the strip-shaped sliding groove 416 on the driving arm 415; a bottom slurry recovery pipe 420 communicated with the return pipe 402 is arranged at the lower side of the cylinder 102;

as shown in fig. 9, the discharging system includes a discharging pipe 501 disposed at the lower part of the discharging end in the barrel 101, and both ends of the discharging pipe 501 extend out of the barrel 101, a screw rod 503 driven by a screw motor 502 is disposed inside the discharging pipe 501, a receiving port 504 is disposed at the upper side of the discharging pipe 501 inside the barrel 101, receiving plates 505 having both ends connected to the inner wall of the cylinder 102 are disposed at both sides of the receiving port 504, and a pulverizer 506, a first discharging valve 507, an intermediate storage tank 508, a second discharging valve 509, and a powder outlet 510 are sequentially disposed at the lower side of the discharging end of the discharging pipe 501; the pulverizer 506 comprises a pulverizing chamber 511, an inlet at the upper side of the pulverizing chamber 511 is communicated with the lower side of the discharge end of the discharge pipe 501, an outlet at the lower side of the pulverizing chamber 511 is communicated with a first discharge valve 507, a pulverizer rotor 513 driven to rotate by a pulverizing motor 512 is arranged in the pulverizing chamber 511, and the side surface of the pulverizing chamber 511 is hinged with a pulverizing chamber end cover 514; the first discharging valve 507 and the second discharging valve 509 are electrically operated valves, a discharging end transparent observation window 515 is arranged on the upper side of the discharging end of the discharging pipe 501, and a storage tank transparent observation window 516 is arranged on the side surface of the middle storage tank 508.

As shown in fig. 10 to 13, a cylinder cover hoisting frame is arranged at two ends of the outer side of the cylinder 101, the cylinder cover hoisting frame comprises a beam 601, one end of the beam 601 is provided with a long leg 602 supported on the ground, and the other end of the beam 601 is provided with a short leg 603 supported on the upper part of the cylinder 102; a sliding groove is formed in the lower side surface of the cross beam 601, a lead screw 605 driven by a lead screw motor 604 is arranged in the sliding groove, a hoisting trolley 606 driven by the lead screw 605 to move along the sliding groove is arranged in the sliding groove, and a hoisting hoist 607 is connected to the lower surface of the hoisting trolley 606; the cross beam 601 is hollow square steel with a strip-shaped opening 608 on the lower side surface, and a sliding groove is formed by a hollow inner cavity of the square steel and lower bottom surfaces 609 on two sides of the strip-shaped opening 608; the hoisting trolley 606 comprises a trolley body 610 and rollers 611, wherein the two sides of the trolley body 610 are pressed on the lower bottom surfaces 609 on the two sides of the strip-shaped opening 608, a threaded hole 612 capable of being sleeved on the lead screw 605 is formed in the trolley body 610, a hoisting ring 613 is arranged on the lower side of the trolley body 610, and a hoisting hoist 607 is connected to the hoisting ring 613.

The above description of the present invention is only for the purpose of illustration, and not for the purpose of limitation, the technical solutions of the present invention are not subject to the spirit and scope of the present invention.

Claims

1. A vacuum belt dryer comprises a cylinder body consisting of a cylinder and cylinder covers at two ends, a multi-layer conveyor belt arranged in the cylinder body, a feeding system and a discharging system; the cylinder is provided with a vacuum pumping port, a heat source inlet and a heat source outlet; the conveying belt consists of a driving roller, a driven roller and a belt; a heating plate for lifting the upper belt is arranged between the driving roller and the driven roller, one end of the heating plate is connected with a heat source inlet through a heating pipe, and the other end of the heating plate is connected with a heat source outlet through a heat return pipe; the method is characterized in that: the driving roller of each layer of conveying belt is driven to rotate by a conveying motor which is positioned outside the cylinder body and rotates in the same direction, so that materials are synchronously conveyed from the feeding end to the discharging end; the feeding system comprises a circulating pipeline for providing raw material slurry, the front section of the circulating pipeline is a feeding pipeline, the rear section of the circulating pipeline is a return pipeline, screw pumps which are driven by a feeding motor and have the same number of layers as the layers of transmission belts in the barrel are arranged between the feeding pipeline and the return pipeline in parallel, a feeding hole of each screw pump is communicated with the feeding pipeline through a feeding valve, a discharging hole of each screw pump is communicated with the return pipeline through a discharging valve, a feeding branch pipeline is communicated between the discharging hole and the discharging valve, the feeding branch pipeline is communicated to a feeding end in the barrel, a vertical shaft with an outer end extending to the upper side or the lower side of the cylinder through a shaft sealing element is arranged in the feeding end of the barrel, swing arms extending to the upper side of each layer of the transmission belts are arranged on the vertical shaft, and a material discharging nozzle is arranged on each swing arm and; the outer side end of the vertical shaft is fixedly connected with a driving wall, a strip-shaped chute is arranged on the driving arm, a paving motor is arranged on a cylinder at a position corresponding to the outer side of the vertical shaft through a motor base, an output shaft of the paving motor is connected with a crank, and a driving end of the crank extends into the strip-shaped chute on the driving arm; the discharging system comprises a discharging pipe which is arranged at the lower part of a discharging end in the barrel body, two ends of the discharging pipe extend out of the barrel body, a screw rod driven by a screw rod motor is arranged in the discharging pipe, a material receiving port is arranged at the upper side of the discharging pipe in the barrel body, material receiving plates with two ends connected with the inner wall of the barrel are arranged at two sides of the material receiving port, and a pulverizer, a first discharging valve, a middle storage tank, a second discharging valve and a powder outlet are sequentially arranged at the lower side of the discharging end of the discharging; the rubbing crusher including smashing the room, smash the discharge end downside intercommunication of room upside import and discharging pipe, smash room downside export and first bleeder valve intercommunication, smash the indoor rubbing crusher rotor that is equipped with by the rotatory grinding motor drive that is equipped with, smash the articulated room end cover that smashes of side of room.

2. The vacuum belt dryer of claim 1, wherein: the lower side of the cylinder is provided with a bottom slurry recovery pipeline communicated with the feed back pipeline.

3. The vacuum belt dryer of claim 1, wherein: the first discharge valve and the second discharge valve are both electrically operated valves.

4. The vacuum belt dryer of claim 1, wherein: a discharge end transparent observation window is arranged on the upper side of the discharge end of the discharge pipe; and a storage tank transparent observation window is arranged on the side surface of the middle storage tank.

5. The vacuum belt dryer of claim 1, wherein: a cylinder cover hoisting frame is arranged at two ends of the outer side of the cylinder body and comprises a cross beam, one end of the cross beam is provided with a long landing leg supported on the ground, and the other end of the cross beam is provided with a short landing leg supported on the upper part of the cylinder; the lower side surface of the cross beam is provided with a sliding chute, a lead screw driven by a lead screw motor is arranged in the sliding chute, a hoisting trolley driven by the lead screw to move along the sliding chute is arranged in the sliding chute, and a hoisting hoist is connected below the hoisting trolley.

6. The vacuum belt dryer of claim 5, wherein: the crossbeam be the hollow square steel that the downside was equipped with the bar mouth, the hollow inner chamber of square steel and the lower bottom surface of bar mouth both sides constitute the spout.

7. The vacuum belt dryer of claim 6, wherein: the hoisting trolley comprises a trolley body and rollers, wherein the two sides of the trolley body are pressed on the lower bottom surfaces of the two sides of the strip-shaped opening, the trolley body is provided with threaded holes capable of being sleeved with lead screws, the lower side of the trolley body is provided with hoisting rings, and hoisting hoists are connected onto the hoisting rings.