CN113320904A

CN113320904A - Screen type spiral conveying device capable of being heated and dried

Info

Publication number: CN113320904A
Application number: CN202110520292.1A
Authority: CN
Inventors: 张景南
Original assignee: Xiamen Dingfeng Spiral Tech Co ltd
Current assignee: Xiamen Dingfeng Spiral Tech Co ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2021-08-31
Anticipated expiration: 2041-05-13
Also published as: CN113320904B

Abstract

The invention discloses a screen type spiral conveying device capable of being heated and dried, which comprises a base, wherein a drying and screening mechanism is arranged at the top end of the base and comprises a transfer box, an auger, a motor, a feeding box, a rotating wheel, a screening plate, a damping telescopic rod, a damping spring, a fixed box, a protection plate, a hot air blower, a first dust filtering plate, a waste material box and a vibrating motor, the top end of the base is connected with the transfer box, and the auger is connected at the top end of the transfer box. The quality of the material is affected.

Description

Screen type spiral conveying device capable of being heated and dried

Technical Field

The invention relates to the technical field of conveying devices, in particular to a screen type spiral conveying device capable of being heated and dried.

Background

The auger conveyor is also called as a spiral conveyor, the rotating spiral blade pushes the materials to carry out spiral conveying, the auger conveyor is widely applied to various industries and is suitable for horizontally or obliquely conveying powdery, granular and small blocky materials, and the screening type spiral conveyor can carry out screening treatment on the materials while conveying the materials;

but the sieve type screw conveyer on the existing market, when throwing into too much material, take place easily and pile up, cause the screening effect relatively poor to the function is single, does not have the stoving function, can't dry the processing to moist material, causes the material to go mildy and rotten easily, thereby causes the influence to the quality of material.

Disclosure of Invention

The invention provides a screening type spiral conveying device capable of being heated and dried, which has a stable and efficient screening function and a drying function and can meet the conveying and storage requirements of wet materials.

In order to achieve the purpose, the invention provides the following technical scheme: a sieving type spiral conveying device capable of being heated and dried, which comprises a base, wherein the top end of the base is connected with a transfer box, the top end of the transfer box is connected with an auger, one end part of the auger is connected with a motor, the other end part of the auger is connected with a feeding box, the inner side of the feeding box is rotatably connected with a rotating wheel, the inner side of the feeding box is slidably connected with a screening plate corresponding to the lower position of the rotating wheel, the four side parts at the bottom end of the screening plate are connected with damping telescopic rods corresponding to the inner side positions of the feeding box, damping springs are sleeved outside the damping telescopic rods, one end of the feeding box is connected with a fixed box, one side of the fixed box is embedded and connected with a protection plate, the inner side of the fixed box is connected with an air heater, the other side of the fixed box is embedded and connected with a first dust filter plate, the bottom end of the feeding box is connected with a waste box, and the middle of the bottom end of the screening plate is connected with a vibrating motor.

Preferably, motor, air heater and vibrating motor input and external power supply output electric connection, the embedding of auger top is connected in the feeding incasement side, the embedding of auger bottom is connected in the transport case inboardly.

Preferably, a ventilation mechanism is arranged at the top end of the packing auger;

the ventilation mechanism comprises an exhaust pipe, a filter screen, a ventilation pipe, an exhaust box, an exhaust fan and a second dust filter plate;

the packing auger top equidistance embedding is connected with the blast pipe, the inboard embedding of blast pipe is connected with the filter screen, the blast pipe top is connected with the ventilation pipe, the packing auger top corresponds ventilation pipe tip position department and is connected with exhaust case, the incasement side of airing exhaust is connected with the air exhauster, exhaust case one side is connected with the second dust filter.

Preferably, one end of the ventilation pipe is embedded and connected to the inner side of the exhaust box, and the input end of the exhaust fan is electrically connected with the output end of the external power supply.

Preferably, the inboard symmetric connection of feeding case has the rotor plate, the inboard department of corresponding rotor plate one side position of feeding case is connected with the support telescopic link, support spring has been cup jointed in the support telescopic link outside, the inboard top equidistance of feeding case articulates there is the spoiler.

Preferably, one end of the supporting spring is embedded and connected to the inner side of the feeding box, and the flow blocking plate is located at a position above the material sieving plate.

Preferably, the auger comprises an auger shaft and auger blades; the auger shaft comprises a central shaft rod; the central shaft lever is provided with a plurality of sliding grooves along the axial direction; the plurality of sliding chutes are uniformly arranged on the outer circumferential surface of the central shaft rod around the center of the central shaft rod; the linear sliding blocks are respectively in sliding fit with the sliding grooves; the plurality of sliding blocks form an outer layer shaft sleeve of the auger shaft; the auger blade is spirally wound on the outer surface of the outer layer shaft sleeve; the plurality of sliding blocks are pushed or pulled to be staggered with each other so as to adjust the included angle between the auger blade and the auger shaft.

Preferably, the outer surface of the sliding block is vertically provided with a short shaft; the contact part of the auger blade and the outer shaft sleeve is provided with a short shaft sleeve corresponding to the short shaft; the short shaft and the short shaft sleeve can be rotatably inserted and matched.

Preferably, one end of the auger shaft is fixedly sleeved with an elastic device; elastic pieces are arranged on the elastic devices corresponding to the sliding blocks respectively, and elastic force along the axial direction of the auger shaft is applied to the elastic pieces from one end of each sliding block; the other end of the auger shaft is rotatably sleeved with an extrusion piece; one side of the extrusion piece, which faces the other end of the outer shaft sleeve, is provided with a smooth continuous curved surface, and the extrusion piece applies extrusion force to the sliding block along the axial direction of the auger shaft through rotation; the pressing force is opposite to the elastic force.

Preferably, the extrusion part is a revolving body, and the circumferential surface of the extrusion part is provided with transmission teeth; a drive gear and driving tooth meshing drive extruded part and rotate certain angle, make extruded part tip curved surface promote partial slider to remove to the contained angle between adjustment auger blade and the auger axle.

Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure and safe and convenient use:

1. the drying and screening mechanism is arranged, so that materials can be screened and dried, workers can disperse and stir the materials conveniently, the workers can vibrate and screen the materials conveniently, and the drying and screening effect of the device is improved, so that the processing speed of the device on the materials is increased, the phenomenon that the materials are stacked and mixed together to cause insufficient drying and screening of the materials is avoided, and the quality of the materials is influenced.

2. The invention is provided with the ventilation mechanism, can ventilate the auger and can also collect the vapor generated by drying the material, so that the worker can conveniently collect the vapor generated by drying the material and can conveniently discharge the collected vapor, thereby improving the drying effect of the material, and avoiding the problems that the vapor generated by drying the material cannot be discharged, the vapor is liquefied to generate water mist and is re-blended into the material to influence the drying effect of the material and cause insufficient drying of the material.

3. The material screening and drying device is provided with the rotating plate, the supporting telescopic rod, the supporting spring and the flow blocking plate, the quantity of materials entering the feeding box can be limited, the moving and flowing speed of the materials and hot air can be blocked, workers can conveniently keep the materials uniformly entering the feeding box to carry out drying and screening, the moving and flowing speed of the materials and the hot air can be conveniently slowed down, the screening and drying time of the materials is further increased, the screening and drying effect of the materials is enhanced, and the problems that the screening and drying time is insufficient due to too much material input or too short screening and drying time are avoided.

4. According to the invention, the auger shaft is designed into a core-sleeve layer structure, the shaft sleeve is formed by slidably splicing a plurality of strip-shaped sliding blocks, the auger blade is wound on the shaft sleeve, the included angle and the helix angle of the auger blade relative to the auger shaft can be controlled by controlling the dislocation of the sliding blocks through axially sliding the sliding blocks, the adaptability adjustment can be made according to different material types and different conveying speeds, the conveying efficiency is optimized, and the friction damage and the power loss in the conveying process are reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

In the drawings:

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

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic structural view of the drying and screening mechanism of the present invention;

FIG. 4 is a schematic structural view of the venting mechanism of the present invention;

FIG. 5 is a schematic view of the mounting structure of the pivotal plate of the present invention;

FIG. 6 is a schematic radial cross-sectional view of the auger shaft of the present invention;

FIG. 7 is a schematic radial cross-sectional view of a center shaft of the present invention;

FIG. 8 is a schematic view of the auger of the present invention;

FIG. 9 is a schematic view of an extrusion and drive gear of the present invention.

Reference numbers in the figures: 1. a base;

2. a drying and screening mechanism; 201. a transfer box; 202. a packing auger; 203. an electric motor; 204. a feeding box; 205. a rotating wheel; 206. a material sieving plate; 207. a shock-absorbing telescopic rod; 208. a damping spring; 209. a fixed box; 210. a protection plate; 211. a hot air blower; 212. a first dust filter plate; 213. a waste bin; 214. a vibration motor; 215. a packing auger shaft; 216. a screw blade; 217. a central shaft; 218. a chute; 219. a slider; 220. an outer layer shaft sleeve; 221. a minor axis; 222. a short shaft sleeve; 223. an elastic device; 224. an extrusion; 225. a drive gear;

3. a ventilation mechanism; 301. an exhaust pipe; 302. a filter screen; 303. a vent pipe; 304. an exhaust box; 305. an exhaust fan; 306. a second dust filter plate;

4. a rotating plate; 5. supporting the telescopic rod; 6. a support spring; 7. a spoiler.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example (b): as shown in fig. 1-5, the invention provides a technical scheme, a screening type spiral conveying device capable of being heated and dried, which comprises a base 1, wherein the base is convenient for workers to dispersedly stir materials and also convenient for the workers to vibrate and screen the materials, so that the drying and screening effects of the device are improved, the processing speed of the device on the materials is enhanced, and a drying and screening mechanism 2 is installed at the top end of the base 1;

the drying and screening mechanism 2 comprises a transfer box 201, an auger 202, a motor 203, a feeding box 204, a rotating wheel 205, a screening plate 206, a damping telescopic rod 207, a damping spring 208, a fixed box 209, a protection plate 210, a hot air blower 211, a first dust filtering plate 212, a waste material box 213 and a vibration motor 214;

the top end of the base 1 is connected with a transfer box 201, the top end of the transfer box 201 is connected with an auger 202, the bottom end of the auger 202 is embedded and connected with the inner side of the transfer box 201, one end part of the auger 202 is connected with a motor 203, the model of the motor 203 is PF8-0200-20S3B, the other end part of the auger 202 is connected with a feed box 204, the top end of the auger 202 is embedded and connected with the inner side of the feed box 204, the inner side of the feed box 204 is rotatably connected with a rotating wheel 205, the inner side of the feed box 204 is slidably connected with a screening plate 206 corresponding to the lower position of the rotating wheel 205, four sides of the bottom end of the screening plate 206 are respectively connected with a damping telescopic rod 207 corresponding to the inner side of the feed box 204, the outer side of the damping telescopic rod 207 is sleeved with a damping spring 208, one end part of the feed box 204 is connected with a fixed box 209, one side of the fixed box 209 is embedded and connected with a hot air blower 211, the model of the hot air blower 211 is AS-A protective plate 003, fixed case 209 opposite side embedding is connected with first dust filter 212, and feeding case 204 bottom is connected with waste material case 213, and sieve material board 206 bottom middle part is connected with vibrating motor 214, and vibrating motor 214's model is YZS-10-4, and motor 203, air heater 211 and vibrating motor 214 input and external power supply output electric connection to avoided the material pile to mix together, caused the material to dry and sieve inadequately, caused the influence to the quality of material.

The steam generated after the materials are dried can be conveniently collected by workers, the collected steam can be conveniently discharged by the workers, so that the drying effect of the materials is improved, and the ventilation mechanism 3 is arranged at the top end of the auger 202;

the ventilation mechanism 3 comprises an exhaust pipe 301, a filter screen 302, a ventilation pipe 303, an exhaust box 304, an exhaust fan 305 and a second dust filter plate 306;

the embedding of 202 top equidistance of auger is connected with blast pipe 301, the inboard embedding of blast pipe 301 is connected with filter screen 302, blast pipe 301 top is connected with ventilation pipe 303, auger 202 top corresponds ventilation pipe 303 tip position department and is connected with exhaust case 304, ventilation pipe 303 tip embedding is connected in exhaust case 304 inboardly, the case 304 inboard of airing exhaust is connected with air exhauster 305, air exhauster 305's model is SF2.5-4, air exhauster 305 input and external power supply output electric connection, it is connected with second ash dirt filter 306 to air exhaust case 304 one side, thereby avoided the unable discharge of produced vapor after the material is dried, the liquefaction produces the water smoke, integrate into the material once more, influence the stoving effect of material, cause the material to dry inadequately.

Be convenient for the staff keeps the even entering of material to dry the screening in feed box 204, the staff of also being convenient for slows down the removal velocity of circulation of material and hot-air, and then increase the screening and the stoving time of material, thereby strengthen the screening stoving effect of material, the inboard symmetric connection of feed box 204 has rotor plate 4, the inboard 4 one side position departments of rotor plate that correspond of feed box 204 are connected with support telescopic link 5, support spring 6 has been cup jointed in the support telescopic link 5 outside, 6 tip embedding of support spring is connected in feed box 204 inboardly, the inboard top equidistance of feed box 204 articulates there is spoiler 7, spoiler 7 is located sieve flitch 206 top position department, thereby avoided the material to drop into too much or the screening stoving time is short excessively, cause the material screening stoving inadequately.

For the auger 202, auger blades in the existing auger 202 are all fixed on an auger shaft, so that after the manufacturing is finished, various parameters such as the screw pitch, the helix angle and the like are all fixed, and in view of the requirement of mass production, besides fixed models, the conveyer is difficult to realize customized design and manufacturing aiming at the required conveying materials, and is more difficult to realize the adaptive change of the same conveyer aiming at different materials; in the auger delivery field, material characteristic parameter is a great parameter of influence, and it has shown the requirement of different grade type materials to auger delivery device, and different materials, nature and state are different, in the auger delivery field, can divide into four kinds with the material: 1. the weight is light, the fluidity is good, and the polishing performance is avoided; 2. no polishing effect, but poorer fluidity compared with the first material; 3. the grinding performance is high, and the fluidity is poor; 4. very abrasive and poor flow. Therefore, for a further auger 202, the included angle of the auger blade relative to the auger shaft and the helix angle can be controlled through improvement, the adaptability adjustment can be made according to different material types and different conveying speeds, the conveying efficiency is optimized, and the friction damage and the power loss in the conveying process are reduced. The specific embodiment is as follows:

as shown in fig. 6-9, auger 202 includes auger shaft 215 and auger blades 216; the auger shaft 215 comprises a central shaft rod 217; the central shaft lever 217 is provided with a plurality of sliding grooves 218 along the axial direction; a plurality of sliding grooves 218 are uniformly arranged on the outer circumferential surface of the central shaft lever 217 around the center of the central shaft lever 217; a plurality of linear sliding blocks 219 are respectively in sliding fit with the sliding grooves 218; a plurality of sliding blocks 219 form an outer layer shaft sleeve 220 of the auger shaft 215; the auger blade 216 is spirally wound on the outer surface of the outer layer shaft sleeve 220; the plurality of sliding blocks 219 are pushed or pulled to be staggered with each other so as to adjust the included angle between the auger blade 216 and the auger shaft 215.

A short shaft 221 is vertically arranged on the outer surface of the sliding block 219; a short shaft sleeve 222 is arranged at the contact part of the auger blade 216 and the outer shaft sleeve 220 corresponding to the short shaft 221; the short shaft 221 is rotatably inserted into the short shaft sleeve 222.

One end of the auger shaft 215 is fixedly sleeved with an elastic device 223; elastic pieces are arranged on the elastic device 223 corresponding to the sliding blocks 219 respectively, and elastic force along the axial direction of the packing auger shaft 215 is applied to the elastic pieces through one ends of the sliding blocks 219; the other end of the auger shaft 215 is rotatably sleeved with an extrusion piece 224; one side of the extrusion piece 224 facing the other end of the outer layer shaft sleeve 220 is provided with a smooth continuous curved surface, and the extrusion piece 224 applies extrusion force to the sliding block 219 along the axial direction of the packing auger shaft 215 through rotation; the pressing force is opposite to the elastic force.

The extrusion piece 224 is a revolving body, and the circumferential surface of the extrusion piece is provided with transmission teeth; a drive gear 225 is engaged with the drive gear to drive the extrusion piece 224 to rotate for a certain angle, so that the curved surface at the end of the extrusion piece 224 pushes part of the slide 219 to move, and the included angle between the auger blade 216 and the auger shaft 215 is adjusted.

It should be noted that the modified auger 202 of this embodiment is not suitable for transporting powder and liquid materials.

The working principle and the using process of the invention are as follows: firstly, a worker needs to put a material to be screened and dried into the feeding box 204, at the moment, the rotating plates 4 rotate downwards under the pressure of the material, and meanwhile, the rotating amplitude of the rotating plates 4 is limited by the elastic action of the supporting springs 6 and the limiting support of the supporting telescopic rods 5 on the rotating plates, so that a feeding port with a fixed size is formed between the two rotating plates 4, and the material slides downwards uniformly and quantitatively;

meanwhile, the worker needs to open the hot air blower 211, outside air is sucked into the fixed box 209, the air is filtered through the second dust filter plate 306, the materials are prevented from falling into the hot air blower 211 through the protection plate 210, the hot air is damaged to the hot air blower 211, then the hot air is blown into the feeding box 204, the materials are dried, the rotating wheel 205 is driven to rotate, the materials are stirred and dispersed, and the materials are dried more fully and uniformly;

subsequently, the worker needs to turn on the vibration motor 214 to drive the material sieving plate 206 to vibrate, so as to sieve the material on the material sieving plate 206, and the material is blocked by the flow blocking plate 7, so that the retention time of the material on the material sieving plate 206 is increased, and the sieving effect of the material is further improved, so that the impurities in the material are filtered out through the material sieving plate 206 and fall into the waste bin 213 to be collected, and meanwhile, the vibration generated by the material sieving plate 206 is buffered through the elastic action of the damping spring 208 and the support and fixation of the damping telescopic rod 207, so as to reduce the influence of the vibration on the feeding box 204;

subsequently, the material after the screening will get into auger 202, at this moment, the staff need open motor 203 and drive auger 202 and rotate, transport the material, and simultaneously, the staff need open air exhauster 305, the produced vapor of material stoving in auger 202 is inhaled through blast pipe 301, collect in the ventilation pipe 303, prevent through filter screen 302 that the material from inhaling, the vapor of collecting in the ventilation pipe 303 afterwards will be discharged through exhaust box 304 and second dust filter 306 afterwards, finally, the material after the screening stoving is accomplished will fall into transfer box 201 and keep in, so that carry out the transportation processing on next step.

For the packing auger 202, the method for controlling the included angle of the packing auger blade relative to the packing auger shaft and the helix surface lead angle is as follows; the extrusion part 224 is rotated to a calculated angle through an external auxiliary motor or in a manual mode, and the contact surface of the extrusion part 224 and the sliding block 219 is a curved surface, so that thrust is applied to the sliding block 219 by the curved surface in the rotating process, the sliding blocks 219 are staggered according to design requirements, position changes are transmitted to the auger blade 216 through the short shaft 221 and the short shaft sleeve 222, the positions of the auger blade 216 are changed accordingly, the included angle of the auger blade 216 relative to the auger shaft 215 can be changed according to needs, and the helix angle of the auger blade is changed.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a screen type screw conveyer of heatable stoving, includes base (1), its characterized in that: the base (1) top is connected with transfer box (201), transfer box (201) top is connected with auger (202), auger (202) a termination has motor (203), another end connection of auger (202) has feeding case (204), feeding case (204) inboard is rotated and is connected with and rotates wheel (205), feeding case (204) inboard corresponds to rotate wheel (205) below position department sliding connection have sieve flitch (206), sieve flitch (206) bottom four sides department corresponds feeding case (204) inboard position department and all is connected with shock attenuation telescopic link (207), damping spring (208) have been cup jointed in shock attenuation telescopic link (207) outside, a feeding case (204) end connection has fixed case (209), fixed case (209) one side embedding is connected with guard plate (210), fixed case (209) inboard is connected with air heater (211), fixed case (209) opposite side embedding is connected with first dust filter (212), feeding case (204) bottom is connected with dump bin (213), sieve flitch (206) bottom middle part is connected with vibrating motor (214).

2. The spiral conveying device for the sieve type capable of being heated and dried according to claim 1, wherein the input ends of the motor (203), the hot air blower (211) and the vibration motor (214) are electrically connected with the output end of an external power supply, the top end of the packing auger (202) is embedded and connected inside the feeding box (204), and the bottom end of the packing auger (202) is embedded and connected inside the transfer box (201).

3. The screw conveyor with the sieve type capable of being heated and dried according to claim 1, characterized in that the top end of the packing auger (202) is embedded and connected with an exhaust pipe (301) in an equal distance, the inner side of the exhaust pipe (301) is embedded and connected with a filter screen (302), the top end of the exhaust pipe (301) is connected with a vent pipe (303), the top end of the packing auger (202) is connected with a vent box (304) at a position corresponding to one end part of the vent pipe (303), the inner side of the vent box (304) is connected with an exhaust fan (305), and one side of the vent box (304) is connected with a second dust filter plate (306).

4. A spiral conveyer for sieve type heat drying according to claim 3, wherein one end of said ventilating pipe (303) is inserted and connected inside said exhaust box (304), and the input end of said exhaust fan (305) is electrically connected with the output end of external power supply.

5. The spiral conveying device for the sieving type capable of being heated and dried according to claim 1, wherein the feeding box (204) is symmetrically connected with the rotating plate (4) at the inner side, a supporting telescopic rod (5) is connected to the position, corresponding to one side of the rotating plate (4), at the inner side of the feeding box (204), a supporting spring (6) is sleeved on the outer side of the supporting telescopic rod (5), and the flow blocking plate (7) is hinged to the top end of the inner side of the feeding box (204) at equal intervals.

6. A spiral conveyor for heat-dryable screens according to claim 5, characterised in that the supporting spring (6) is connected at one end to the inside of the feed box (204) in a snap-in manner, and the baffle (7) is located at a position above the screen plate (206).

7. A sieve-type screw conveyor capable of being heated and dried according to any one of claims 1 to 6, wherein the auger (202) includes an auger shaft (215) and an auger blade (216); the auger shaft (215) comprises a central shaft lever (217); the central shaft lever (217) is provided with a plurality of sliding grooves (218) along the axial direction; a plurality of sliding grooves (218) are uniformly arranged on the outer circumferential surface of the central shaft lever (217) around the center of the central shaft lever (217); a plurality of linear sliding blocks (219) are respectively in sliding fit with the sliding grooves (218); a plurality of sliding blocks (219) form an outer layer shaft sleeve (220) of the packing auger shaft (215); the auger blade (216) is spirally wound on the outer surface of the outer layer shaft sleeve (220); the sliding blocks (219) are pushed or pulled to be mutually staggered so as to adjust the included angle between the auger blade (216) and the auger shaft (215).

8. A spiral conveyor for heat-dryable screens according to claim 7 wherein the outer surface of the slide (219) is provided with a short axis (221) vertically; a short shaft sleeve (222) is arranged at the contact part of the auger blade (216) and the outer shaft sleeve (220) corresponding to the short shaft (221); the short shaft (221) is rotatably inserted and matched with the short shaft sleeve (222).

9. The spiral conveying device for the sieve type capable of being heated and dried according to claim 8, wherein an elastic device (223) is fixedly sleeved at one end of the auger shaft (215); elastic pieces are arranged on the elastic device (223) corresponding to the sliding blocks (219) respectively, and elastic force along the axial direction of the packing auger shaft (215) is applied to the elastic pieces by one end of each sliding block (219); the other end of the auger shaft (215) is rotatably sleeved with an extrusion piece (224); one surface of the extrusion piece (224) facing the other end of the outer layer shaft sleeve (220) is provided with a smooth continuous curved surface, and the extrusion piece (224) applies extrusion force along the axial direction of the packing auger shaft (215) to the sliding block (219) through rotation; the pressing force is opposite to the elastic force.

10. The spiral conveying device for the sieve type capable of being heated and dried according to claim 8, wherein the extrusion member (224) is a rotary body, and the circumferential surface of the extrusion member is provided with transmission teeth; a driving gear (225) is meshed with the transmission gear to drive the extrusion part (224) to rotate for a certain angle, so that the curved surface at the end part of the extrusion part (224) pushes part of the sliding block (219) to move, and the included angle between the auger blade (216) and the auger shaft (215) is adjusted.