CN220119725U - Drying machine - Google Patents

Abstract

The utility model discloses a dryer, which relates to the technical field of drying and comprises a frame, a drying device, a conveying device and a feeding device; the conveying device comprises a conveying pipe and a rotary driving mechanism; the conveying pipe is rotatably arranged on the frame relative to the ground surface at a certain inclined angle, one inclined upward end of the conveying pipe is provided with a feed inlet, and the other inclined downward end of the conveying pipe is provided with a discharge outlet; the rotary driving mechanism is arranged on the frame and used for driving the conveying pipe to rotate; the drying device is arranged on the frame and sleeved outside the conveying pipe, and is used for heating the conveying pipe so as to dry the materials passing through the conveying pipe; the feeding device is connected with one end of the conveying pipe and is used for throwing materials to be dried into the conveying pipe. The whole production process is convenient and fast to operate, high in flexibility, capable of reducing labor intensity of personnel, reducing environmental pollution risks and product pollution risks, convenient for collecting reasonable metal tellurium powder, and capable of improving production safety coefficient and product quality.

Description

Drying machine

Technical Field

The utility model relates to the technical field of drying, in particular to a dryer.

Background

The metal tellurium powder drying production process comprises the following steps: the mother solution is reduced to metal, the metal containing moisture is obtained through a wet production process, and the production process with preset shape, size and performance is obtained after cooling solidification and cleaning treatment.

The traditional production process of the metal tellurium powder comprises the operations of metal melting, casting, transferring and drying, and the like, and the transfer and drying operation needs to be completed manually at present, and the specific operation process is that a manual material is shoveled to a baking tray, the baking tray is put into a baking frame, the baking frame is pushed into a baking oven, and after the materials are dried, the materials can be taken out after being cooled. In the process, a large amount of dust can be generated by frequent shoveling and transferring, and the mode of drying by utilizing a baking tray is utilized, so that the drying time of the metal tellurium powder is long, the condition of uneven drying exists, and the appearance quality of the metal tellurium powder is seriously affected.

Summarizing, the existing metal tellurium powder transferring and drying mode has the disadvantages of complex process, low efficiency, unstable drying quality, high labor intensity and easy scalding of personnel.

Disclosure of Invention

Therefore, the utility model aims to provide a dryer to solve the technical problems of complicated process, low efficiency, unstable drying quality, high labor intensity and the risk of easy scalding of personnel in the existing metal tellurium powder transferring and drying mode.

In order to achieve the technical aim, the utility model provides a dryer which comprises a frame, a drying device, a conveying device and a feeding device;

the conveying device comprises a conveying pipe and a rotary driving mechanism;

the conveying pipe is rotatably arranged on the frame relative to the ground surface at a certain inclined angle, one inclined upward end of the conveying pipe is provided with a feed inlet, and the other inclined downward end of the conveying pipe is provided with a discharge outlet;

the rotary driving mechanism is arranged on the frame and used for driving the conveying pipe to rotate;

the drying device is arranged on the frame and sleeved outside the conveying pipe, and is used for heating the conveying pipe so as to dry the materials passing through the conveying pipe;

the feeding device is connected with one end of the conveying pipe and used for throwing materials to be dried into the conveying pipe.

Further, a supporting frame is arranged on the frame;

the support frame is pivoted with two rollers;

the two rollers are used for supporting the conveying pipe and are in rotary contact with the conveying pipe;

a first stop piece is arranged on the conveying pipe;

a second stop piece is arranged on the frame;

the first stop piece is in rotary contact with the second stop piece along the direction from one end of the conveying pipe to the other end.

Further, the frame is also rotatably provided with a roller;

the roller is arranged above the conveying pipe and is in rotary contact with the conveying pipe.

Further, a feeding end cover is arranged at one end of the conveying pipe;

the feed inlet is arranged on the feed end cover;

a discharge end cover is arranged at the other end of the conveying pipe;

the discharge port is arranged on the discharge end cover;

and a fan cover is sleeved outside one end of the conveying pipe.

Further, the rotary drive mechanism includes a rotary drive and a transmission assembly;

and an output shaft of the rotary driver is connected with the conveying pipe through the transmission assembly and is used for driving the conveying pipe to rotate.

Further, the transmission assembly comprises a main sprocket, a secondary sprocket and a chain;

the main chain is fixed on an output shaft of the rotary driver;

the secondary chain wheel is sleeved on the conveying pipe and is in transmission fit with the main chain through the chain.

Further, the drying device comprises an upper shell, a lower shell, an upper heating sleeve and a lower heating sleeve;

the lower shell is arranged on the frame;

one side edge of the upper shell is hinged with one side edge of the lower shell, and the other side edge of the upper shell is detachably connected with the other side edge of the lower shell;

the upper heating sleeve is arranged in the upper shell;

the lower heating sleeve is arranged in the lower shell;

when the upper shell is in closed connection with the lower shell, a heating cavity for the conveying pipe to pass through is enclosed between the upper heating sleeve and the lower heating sleeve.

Further, the upper heating sleeve and the lower heating sleeve are ceramic fiber heating sleeves.

Further, the feeding device comprises a vibrating feeder, a feeding pipe and a feeding hopper;

the feeding pipe is arranged on the vibrating feeder, one end of the feeding pipe is arranged in a closed mode, and the other end of the feeding pipe is communicated with a feeding hole of the conveying pipe;

the feed hopper is mounted on the feed pipe and communicated with the feed hopper.

Further, the conveying pipe is a quartz pipe;

the inclination angle of the conveying pipe is 13-15 degrees.

According to the technical scheme, the metal tellurium powder to be dried can be put into the conveying pipe through the feeding device, the conveying pipe which is arranged at a certain inclination angle with the ground is driven to rotate through the rotary driving mechanism, rolling conveying of the metal tellurium powder in the conveying pipe is achieved, and the metal tellurium powder is dried through the drying device sleeved outside the conveying pipe in the conveying process, so that the transferring and drying process of the metal tellurium powder is completed. The whole production process can be observed and operated in real time through the PLC control operation station, the degree of automation is high, the operation is convenient and flexible, the production efficiency is high, and the granularity and the specific gravity of the produced metal tellurium powder can be conveniently adjusted according to the process requirements. Furthermore, the labor intensity of personnel is reduced, the environmental pollution risk and the product pollution risk are reduced, the rationalized collection of the metal tellurium powder is facilitated, and the production safety coefficient and the product quality are improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a perspective view of a dryer provided in the present utility model;

FIG. 2 is a top view of a dryer provided in the present utility model;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is an enlarged schematic view of the position B in FIG. 3;

fig. 5 is a front view illustrating a drying apparatus of a dryer according to the present utility model in an opened state;

fig. 6 is a top view illustrating a drying apparatus of a dryer according to the present utility model in an opened state;

fig. 7 is a side view illustrating a drying apparatus of a dryer according to the present utility model in an opened state;

fig. 8 is a front view of a feeding device of a dryer provided in the present utility model;

in the figure: 100. a frame; 101. a support frame; 1011. a roller; 102. a second stopper; 1021. a bearing; 103. a roller; 200. a conveying device; 300. a drying device; 400. a feeding device; 1. a delivery tube; 11. a first stopper; 12. a discharge end cover; 13. a feed end cap; 14. a fan housing; 141. an air suction port; 2. a rotary driving mechanism; 21. a rotary driver; 22. a transmission assembly; 221. a main sprocket; 222. a chain; 223. a slave sprocket; 31. a lower housing; 311. a movable buckle main body; 32. an upper housing; 321. a movable buckle hook; 322. a handle; 33. a hinge; 34. side baffles; 41. a lower heating jacket; 42. a heating jacket is arranged; 5. vibrating the feeder; 51. a matched mounting rack; 52. a matched base; 61. a feed pipe; 62. a feed hopper; 71. a buffer ring; 72. a compression bar; 73. a tube fixing base; 74. a pipe plug structure.

Detailed Description

The following description of the embodiments of the present utility model will be made in detail, but not necessarily all embodiments, with reference to the accompanying drawings. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the embodiments of the present utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the embodiments of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. 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.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, interchangeably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

The embodiment of the utility model discloses a dryer.

Referring to fig. 1, an embodiment of a dryer provided in an embodiment of the present utility model includes:

frame 100, drying device 300, conveyor 200, and feeder 400.

The conveying device 200 includes a conveying pipe 1 and a rotation driving mechanism 2.

The conveying pipe 1 is rotatably arranged on the frame 100 with a certain inclination angle relative to the ground, one obliquely upward end of the conveying pipe is provided with a feed inlet, and the other obliquely downward end of the conveying pipe is provided with a discharge outlet; the rotary driving mechanism 2 is mounted on the frame 100 for driving the conveying pipe 1 to rotate.

The drying device 300 is mounted on the frame 100 and sleeved outside the conveying pipe 1, and is used for heating the conveying pipe 1 so as to dry the materials passing through the conveying pipe 1; when the drying device 300 is designed, at least a part of the pipe section of the conveying pipe 1, which is positioned in the drying device 300, is a heat conducting pipe section so as to ensure that heat can be transferred into the conveying pipe 1.

The feeding device 400 is connected with one end of the conveying pipe 1 and is used for feeding materials to be dried into the conveying pipe 1.

The metal tellurium powder to be dried can be put into the conveying pipe 1 through the feeding device 400, the conveying pipe 1 which is arranged at a certain inclination angle with the ground is driven to rotate through the rotary driving mechanism 2, the metal tellurium powder is conveyed in the conveying pipe 1 in a rolling manner, and the metal tellurium powder is dried through the drying device 300 which is sleeved outside the conveying pipe 1 in the conveying process, so that the transferring and drying process of the metal tellurium powder is completed. The whole production process can be observed and operated in real time through the PLC control operation station, the degree of automation is high, the operation is convenient and flexible, the production efficiency is high, and the granularity and the specific gravity of the produced metal tellurium powder can be conveniently adjusted according to the process requirements. Furthermore, the labor intensity of personnel is reduced, the environmental pollution risk and the product pollution risk are reduced, the rationalized collection of the metal tellurium powder is facilitated, and the production safety coefficient and the product quality are improved.

The foregoing is an embodiment one of a dryer provided in the present embodiment, and the following is an embodiment two of a dryer provided in the present embodiment, and refer to fig. 1 to 8 specifically.

Based on the scheme of the first embodiment:

further, as shown in fig. 1 and 4, a support frame 101 is provided on the frame 100 in order to facilitate the rotatable mounting of the conveying pipe 1 on the frame 100.

The support frame 101 is pivoted with two rollers 1011, and the two rollers 1011 are used for supporting the conveying pipe 1 and are in rotary contact with the conveying pipe 1, so that the conveying pipe 1 is rotatably arranged on the frame 100. The number of the supporting frames 101 may be two, and the two supporting frames are arranged on two sides of the drying device 300 along the conveying direction of the conveying pipe 1, so that a better supporting effect can be achieved on the conveying pipe 1.

In order to avoid the relative displacement of the conveying pipe 1 and the frame 100 along the conveying direction of the conveying pipe 1 and ensure the reliability of rotation, a first stop piece 11 is arranged on the conveying pipe 1, and correspondingly, a second stop piece 102 is arranged on the frame 100. The first stopper 11 is in rotational contact with the second stopper 102 in the direction from one end to the other end of the conveying pipe 1. The second stopper 102 cooperates with the first stopper 11 to limit the position of the delivery tube 1. Specifically, as shown in fig. 1 and 4, the first stopper 11 may be a stopper ring, and is sleeved on the conveying pipe 1; the second stop member 102 may be a stop post, and the top of the stop post is sleeved with the bearing 102, and the outer ring of the bearing 102 may contact with the stop ring to rotate, so that the smooth rotation of the conveying pipe 1 can be ensured while the limit is satisfied, and a person skilled in the art can make appropriate change design based on the limit without limitation.

In order to achieve a certain inclination of the delivery pipe 1, the frame 100 itself may be configured with a certain inclination, so that the delivery pipe 1 is installed at a certain inclination. Specifically, for the structural design of the rack 100, the structure may include a bottom plate, a plurality of legs disposed at the bottom of the bottom plate, and inverted U-shaped frames fixed at two ends of the top of the bottom plate, and those skilled in the art may perform various designs according to the needs without limitation.

Further, as shown in fig. 1 and 3, in order to enable the conveying pipe 1 to be rotatably mounted on the frame 100 more reliably, a roller 103 is rotatably mounted on the frame 100, and the roller 103 is disposed above the conveying pipe 1 and is in rotational contact with the conveying pipe 1. The roller 103 and the roller 1011 on the supporting frame 101 form clamping limit for the conveying pipe 1, so that the conveying pipe 1 is more reliably arranged in a rotating way. The number of the rollers 103 may be two, and may be disposed on both sides of the drying device 300 along the conveying direction of the conveying pipe 1, specifically, may be disposed at the inverted U-shaped frame on the bottom plate of the frame 100, which is not limited.

Further, as shown in fig. 1 and 3, for better engagement with the feeding end of the feeding device 400, a feeding end cap 13 is mounted on one end of the feeding tube 1, and the feeding port is provided on the feeding end cap 13. Correspondingly, the other end of the conveying pipe 1 can be provided with the discharge end cover 12, the discharge port is arranged on the discharge end cover 12, and particularly, the design of the discharge end cover 12 can prevent materials in the conveying pipe 1 from flowing out in the rotating process, so that a certain shielding effect is achieved.

Furthermore, in order to avoid dust generated in the feeding process of the feeding device 400, a fan housing 14 is further sleeved outside one end of the conveying pipe 1, and the discharging end of the feeding device 400 extends into the feeding port of the feeding end cover 13 through the fan housing 14, so that materials to be dried are fed into the conveying pipe 1, the fan housing 14 is used for housing the joint between the feeding device 400 and the conveying pipe 1, dust generated at the joint can be reduced, and an exhaust port 141 capable of being connected with an exhaust fan is further arranged on the fan housing 14, so that the materials in the fan housing 14 are conveniently sucked and recovered.

Further, as shown in fig. 2, in terms of the structural design of the rotary drive mechanism 2, a rotary drive 21 and a transmission assembly 22 are included. The output shaft of the rotary driver 21 is connected with the conveying pipe 1 through a transmission assembly 22 and is used for driving the conveying pipe 1 to rotate.

The rotary driver 21 is a rotary motor, and can be an explosion-proof motor made of high-temperature-resistant ceramic materials, the use temperature can reach 1200 ℃, so that the explosion-proof motor is not deformed in a high-temperature environment, is not easy to corrode, has long service life, does not pollute a metal high-temperature melt, is good in safety, can use a variable-frequency controller for a control system of the motor, and is stable in performance and accurate in metering.

Further, as shown in fig. 2 and 4, for the drive assembly 22 design, a master sprocket 221, a slave sprocket 223, and a chain 222 are included. The main sprocket 221 is fixed to an output shaft of the rotary driver 21; the secondary chain wheel 223 is fixedly sleeved on the conveying pipe 1 and is in transmission fit with the main chain wheel 221 through a chain 222. The main sprocket 221, the auxiliary sprocket 223 and the chain 222 are all preferably made of high temperature resistant materials, so as to avoid high temperature deformation to influence the transmission effect, and the chain 222 can be an existing roller chain capable of resisting 300-350 ℃ without limitation.

Further, as shown in fig. 5 to 7, in terms of the structural design of the drying apparatus 300, it includes an upper case 32, a lower case 31, an upper heating jacket 42, and a lower heating jacket 41. The upper shell 32, the lower shell 31, the upper heating jacket 42 and the lower heating jacket 41 are all of semi-cylindrical structure design, so that the conveying pipe 1 can be completely coated after being closed, and the coated part of the conveying pipe 1 can be fully heated.

The lower shell 31 is arranged on the frame 100, one side edge of the upper shell 32 is hinged with one side edge of the lower shell 31, and the other side edge of the upper shell 32 is detachably connected with the other side edge of the lower shell 31; the hinge fit can be realized by the hinge 33, and the hinge design of the existing hinge 33 can be referred to, and details are omitted. For the detachable connection design, the detachable connection design can be realized through a locking structure, for example, a movable buckle main body 311 is arranged on the lower shell 31, and a movable buckle hook 321 which is detachably buckled with the movable buckle main body 311 is arranged on the upper shell 32, so that quick detachable matching is realized. In order to facilitate the opening of the upper housing 32, a handle 322 may be added to the upper housing 32 to facilitate the opening or closing of the upper housing 32.

The upper heating jacket 42 is disposed in the upper housing 32, and the lower heating jacket 41 is disposed in the lower housing 31; when the upper shell 32 and the lower shell 31 are in closed connection, a heating cavity for the conveying pipe 1 to pass through is enclosed between the upper heating sleeve 42 and the lower heating sleeve 41. The drying device 300 can be heated by adopting a PID control technology, has accurate temperature control, good heat preservation effect, long service time, difficult material blockage, easy and convenient loading and unloading, small temperature loss of the metal high-temperature melt, improvement of the quality of the metal high-temperature melt, reduction of the defective rate, contribution to improvement of production efficiency and improvement of economic benefit; those skilled in the art can implement the design according to actual needs without limitation. In addition, the side baffles 34 are provided at both ends of the upper case 32 and the lower case 31, so that heat loss can be reduced and heating efficiency can be further improved.

Further, in terms of the design of the upper heating jacket 42 and the lower heating jacket 41, the ceramic fiber heating jacket can be designed, and a thermocouple is arranged on the ceramic fiber heating jacket to realize heating control, so that the temperature control is accurate, the heating efficiency is high, and the economic benefit is improved.

Further, as shown in fig. 8, in terms of the design of the feeding device 400, a vibratory feeder 5, a feeding tube 61 and a feeding hopper 62 are included.

The feeding pipe 61 is arranged on the vibrating feeder 5, one end of the feeding pipe is in a closed arrangement, and the other end of the feeding pipe is communicated with a feeding port of the conveying pipe 1; specifically, the feeding pipe 61 may be first fixed on a pipe fixing seat 73 through the buffer ring 71, where a pressing strip 72 is disposed between the buffer ring 71 and the feeding pipe 61, so that the buffer ring 71 can fix the feeding pipe 61 on the pipe fixing seat 73 more reliably, and for the closed end of the feeding pipe 61, a sealing structure 74 such as a polytetrafluoroethylene plug may be used to seal the closed end, and the other end of the feeding pipe 61 sequentially passes through the fan housing 14 and the feeding port of the feeding end cap 13 and enters the conveying pipe 1.

The feed hopper 62 is mounted on the feed pipe 61 and communicates with the feed hopper 62 for receiving and storing the material to be dried.

The vibration feeder 5 can refer to or directly follow the existing vibration feeding device, and can be installed on a matched base 52 through a matched installation frame 51, the pipe fixing seat 73 is installed on the vibration feeder 5, the vibration feeder 5 drives the feeding pipe 61 to shake, and then the materials in the feeding hopper 62 are fed into the conveying pipe 1 in a vibration feeding mode, so that automatic feeding is realized. Of course, other feeding structure designs can be adopted, and those skilled in the art can make appropriate changes based on the design, without limitation.

Further, the conveying pipe 1 is preferably a quartz pipe, in particular a high-purity quartz pipe; the high-purity quartz tube not only has high temperature resistance and good heat transfer property, but also has little residue of metal tellurium powder in the high-purity quartz tube, is very easy to clean, and greatly reduces the working strength of workers.

Too large an inclination angle of the conveying pipe 1 easily causes the material to rapidly pass through the drying area formed by the drying device 300, resulting in poor drying effect, and too small an inclination angle easily causes a reduction in conveying efficiency, preferably the inclination angle of the conveying pipe 1 is 13 ° to 15 °.

The dryer designed by the utility model has the following using process: the feeding device 400 feeds the metal tellurium powder into the conveying pipe 1, the conveying pipe 1 is matched with the upper heating sleeve 42 and the lower heating sleeve 41 of the drying device 300 in a rotating mode to continuously heat, the metal tellurium powder can be uniformly heated in the inclined conveying pipe 1 so as to be dried gradually, the metal tellurium powder also gradually rotates to reach the discharge port end in the drying process, and finally the dried metal tellurium powder product can be collected by the collecting box.

In addition, a safety device can be additionally arranged to be electrically connected with the dryer, such as an emergency button switch, so that the operation of the dryer can be stopped quickly through the safety device, and the safety is better.

While the present utility model has been described in detail with respect to a dryer, those skilled in the art will appreciate that the present utility model is not limited to the specific embodiments and applications described above, based on the concepts of the embodiments of the present utility model.

Claims (10)

1. A dryer, which is characterized by comprising a frame (100), a drying device (300), a conveying device (200) and a feeding device (400);

the conveying device (200) comprises a conveying pipe (1) and a rotary driving mechanism (2);

the conveying pipe (1) is rotatably arranged on the frame (100) relative to the ground surface at a certain inclination angle, one inclined upward end of the conveying pipe is provided with a feed inlet, and the other inclined downward end of the conveying pipe is provided with a discharge outlet;

the rotary driving mechanism (2) is arranged on the frame (100) and used for driving the conveying pipe (1) to rotate;

the drying device (300) is arranged on the frame (100) and sleeved outside the conveying pipe (1) and is used for heating the conveying pipe (1) so as to dry materials passing through the conveying pipe (1);

the feeding device (400) is connected with one end of the conveying pipe (1) and is used for throwing materials to be dried into the conveying pipe (1).

2. Dryer according to claim 1, characterized in that the frame (100) is provided with a support (101);

two rollers (1011) are pivoted on the supporting frame (101);

the two rollers (1011) are used for supporting the conveying pipe (1) and are in rotary contact with the conveying pipe (1);

a first stop piece (11) is arranged on the conveying pipe (1);

a second stop piece (102) is arranged on the frame (100);

the first stop piece (11) is in rotary contact with the second stop piece (102) along the direction from one end to the other end of the conveying pipe (1).

3. Dryer according to claim 1, characterized in that the frame (100) is also rotatably fitted with rollers (103);

the roller (103) is arranged above the conveying pipe (1) and is in rotary contact with the conveying pipe (1).

4. Dryer according to claim 1, characterized in that one end of the duct (1) is fitted with a feed end cap (13);

the feed inlet is arranged on the feed end cover (13);

a discharge end cover (12) is arranged at the other end of the conveying pipe (1);

the discharge port is arranged on the discharge end cover (12);

one end of the conveying pipe (1) is also sleeved with a fan cover (14).

5. Dryer according to claim 1, characterized in that the rotary drive mechanism (2) comprises a rotary drive (21) and a transmission assembly (22);

the output shaft of the rotary driver (21) is connected with the conveying pipe (1) through the transmission assembly (22) and is used for driving the conveying pipe (1) to rotate.

6. The dryer according to claim 5, characterized in that the transmission assembly (22) comprises a main sprocket (221), a secondary sprocket (223) and a chain (222);

the main chain (221) is fixed on an output shaft of the rotary driver (21);

the secondary chain wheel (223) is sleeved on the conveying pipe (1) and is in transmission fit with the main chain wheel (221) through the chain (222).

7. The dryer according to claim 1, characterized in that the drying device (300) comprises an upper housing (32), a lower housing (31), an upper heating jacket (42) and a lower heating jacket (41);

the lower shell (31) is mounted on the frame (100);

one side edge of the upper shell (32) is hinged with one side edge of the lower shell (31), and the other side edge of the upper shell (32) is detachably connected with the other side edge of the lower shell (31);

the upper heating jacket (42) is arranged in the upper shell (32);

the lower heating jacket (41) is arranged in the lower shell (31);

when the upper shell (32) and the lower shell (31) are in closed connection, a heating cavity for the conveying pipe (1) to pass through is formed between the upper heating sleeve (42) and the lower heating sleeve (41).

8. The dryer according to claim 7, characterized in that the upper heating jacket (42) and the lower heating jacket (41) are ceramic fiber heating jackets.

9. Dryer according to claim 1, characterized in that the feeding means (400) comprise a vibrating feeder (5), a feed pipe (61) and a feed hopper (62);

the feeding pipe (61) is arranged on the vibrating feeder (5), one end of the feeding pipe is arranged in a closed mode, and the other end of the feeding pipe is communicated with a feeding hole of the conveying pipe (1);

the feed hopper (62) is mounted on the feed pipe (61) and is communicated with the feed hopper (62).

10. Dryer according to claim 1, characterized in that the conveying pipe (1) is a quartz pipe;

the inclination angle of the conveying pipe (1) is 13-15 degrees.