A hot air circulating belt dryer

Abstract

The application provides a hot air circulating belt dryer, which comprises a conveying device, a mounting rack is arranged on the conveying device, a circulating dryer is arranged on the mounting rack, mounting blocks are arranged on the mounting rack in a sliding mode perpendicular to the length direction of the conveying device, a plurality of mounting blocks are arranged on the mounting rack in the length direction of the mounting rack, mounting rods are arranged on the mounting blocks in a rotating mode in the vertical direction, a scatterer is arranged at the bottom end of the mounting rod, the bottom of the scatterer is used for abutting against the conveying device, and a driving device is arranged on the mounting rack and used for driving the mounting blocks to move on the mounting rack. The application can facilitate the collection of materials, reduce material waste and reduce production cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drying equipment, in particular to a hot air circulation belt dryer. BACKGROUND

[0002] The content of this part only provides background information related to the present application, which may not constitute prior art.

[0003] The belt dryer is a continuous drying equipment for batch production, which is used for drying sheet-shaped, strip-shaped and granular materials with good air permeability. It is particularly suitable for materials with high water content, such as dehydrated vegetables, catalysts and traditional Chinese medicine decoction pieces, and the material temperature is not allowed to be high. The belt dryer has the advantages of fast drying speed, high evaporation intensity and good product quality. For paste-like materials such as dehydrated filter cake, it is usually necessary to granulate or make it into strips before drying. The belt dryer is widely used in chemical, video, pharmaceutical, building material and other industries. The existing belt dryer equipment usually directly feeds the material to the conveying belt through the feeding system, and then dries the material in the drying oven.

[0004] A hot air circulation belt dryer is disclosed in Chinese Patent No. CN116379746A, which comprises a rack, first and second rotating shafts rotatably connected to the two ends of the rack, a first rotating roller fixedly connected to the outside of the first rotating shaft, a second rotating roller fixedly connected to the outside of the second rotating shaft, a conveying belt sleeved between the first and second rotating rollers, a support plate fixedly connected to the end of the rack near the second rotating shaft, a first sliding groove formed in the top of the support plate, a sliding plate slidably connected to the inside of the first sliding groove, a fixed seat fixedly connected to the top of the sliding plate, and a water inlet pipe and a first air pipe parallelly distributed with the second rotating shaft. The material is poured into the hopper, the second rotating shaft drives the second gear to rotate, and then the second gear drives the threaded rod to rotate, the sliding block drives the hopper to move back and forth, and the material is poured on the conveying belt, and then the material on the conveying belt can be dried.

[0005] However, in the above-mentioned related technology, there are the following defects: in the actual use process, since the belt dryer mainly dries paste-like materials such as dehydrated filter cake, the dried material is easily bonded between the compression roller and the conveying belt after drying, which is difficult to fall off, resulting in difficulty in collecting the material, some of the material is bonded on the conveying belt, and the internal structure of the material is damaged after multiple drying, resulting in waste of the material and increase of production cost. SUMMARY

[0006] In order to solve the above technical problems, the purpose of the present application is to provide a hot air circulation belt dryer which can facilitate the collection of materials, reduce material waste and reduce production cost.

[0007] The purpose of the present application is achieved by the following technical solutions:

[0008] A hot air circulating belt dryer comprises a conveying device, a mounting rack is arranged on the conveying device, a circulating dryer is arranged on the mounting rack, mounting blocks are arranged on the mounting rack and slide in a direction perpendicular to the length direction of the conveying device, a plurality of mounting blocks are arranged on the mounting rack in the length direction of the mounting rack, mounting rods are arranged on the mounting blocks and rotate in a vertical direction, a scatterer is arranged at the bottom end of the mounting rod, the bottom of the scatterer is used for abutting against the conveying device, a driving device is arranged on the mounting rack and is used for driving the mounting blocks to move on the mounting rack.

[0009] In some possible embodiments, the driving device comprises a driving motor and a lead screw, a plurality of sliding grooves are arranged on the mounting rack in a direction perpendicular to the length direction of the conveying device, the plurality of sliding grooves are uniformly arranged in the length direction of the mounting rack, the mounting blocks correspond to the sliding grooves one by one, the mounting blocks are arranged in the sliding grooves and slide in the length direction of the sliding grooves, the lead screw is arranged in the sliding groove and rotates in the length direction of the sliding groove, the driving motor is fixedly arranged on the mounting rack, an output shaft of the driving motor is in transmission connection with the lead screw, and the mounting block is threadedly sleeved on the lead screw.

[0010] In some possible embodiments, a rack is fixedly arranged in the length direction of each sliding groove at the notch of the sliding groove, a gear is coaxially fixedly sleeved on the top of the mounting rod, the gear is in meshing connection with the rack, and the top of the rack is used for sliding connection with the bottom of the mounting block.

[0011] In some possible embodiments, a guide rod is fixedly arranged in the length direction of each sliding groove in the sliding groove, two guide rods are arranged in each sliding groove, the two guide rods are arranged on the two sides of the lead screw, and a guide hole is arranged on the mounting block and is used for the guide rod to pass through.

[0012] In some possible embodiments, a mounting sleeve is slidably sleeved on the bottom of the mounting rod, the scatterer is fixedly arranged at the bottom of the mounting sleeve, the mounting sleeve is detachably connected with the mounting rod, and a limiting piece is arranged on the mounting sleeve and is used for limiting the position of the mounting sleeve on the mounting rod.

[0013] In some possible embodiments, the limiting piece is a limiting pin, a connecting groove is arranged on the bottom of the mounting rod and is used for sliding connection of the limiting piece, the connecting groove is throughly arranged at the bottom, an annular groove is arranged on the top of the connecting groove and is used for circumferential connection of the mounting rod, and a limiting groove is arranged on the end of the annular groove away from the connecting groove and is used for clamping of the limiting piece.

[0014] In some possible embodiments, a strip-shaped slot is formed on the inner wall of the mounting sleeve in the vertical direction, a strip-shaped block is slidably arranged in the strip-shaped slot, the limiting piece is fixedly arranged at the end of the strip-shaped block away from the strip-shaped slot, a first elastic piece is arranged in the strip-shaped slot, and the first elastic piece is used to drive the strip-shaped block to move towards the direction away from the conveying device.

[0015] In some possible embodiments, two mounting rods are arranged on each mounting block, two racks are arranged at the slot opening of each sliding slot, the two racks are arranged on the two sides of the slot opening of the sliding slot, and a gear is coaxially fixedly sleeved at the top of each mounting rod, and the two gears are engaged with the two racks on the two sides of the sliding slot, respectively.

[0016] In some possible embodiments, a sliding layer is arranged on the bottom of the mounting block, and the sliding layer is used to be in sliding connection with the top of the rack.

[0017] In some possible embodiments, the mounting rod comprises a first connecting rod and a second connecting rod, the top of the first connecting rod is rotationally connected with the bottom of the mounting block, the bottom of the second connecting rod is connected with the disperser, a connecting sleeve is arranged at the top of the second connecting rod, a connecting hole for the first connecting rod to insert is formed at the top of the connecting sleeve, and a second elastic piece is arranged in the connecting sleeve, and the second elastic piece is used to drive the second connecting rod to move towards the direction away from the first connecting rod.

[0018] In conclusion, the technical scheme of the embodiment of the present application has at least the following advantages and beneficial effects:

[0019] 1. When the material is dried, the material is laid on the conveying device, the driving device is started at the same time as the circulating dryer is started, the driving device drives the mounting block to move on the mounting frame, the mounting block drives the disperser to move, the bottom of the disperser abuts against the conveying device, so that the material laid on the conveying device can be dispersed, on the one hand, the material can be effectively prevented from being bonded on the conveying device, the collection of the material is facilitated, the waste of the material is reduced, the production cost is reduced, on the other hand, the material is dispersed in the conveying process, the drying effect of the material is further improved, and the drying quality is improved.

[0020] 2. When the material is dried, the driving motor is started, the driving motor drives the lead screw to rotate, the lead screw drives the mounting block to move in the sliding slot, with the movement of the mounting block, the gear at the top of the mounting rod is engaged with the rack, so as to drive the mounting rod to deflect on the mounting block, and further drive the disperser to rotate, so that the disperser rotates while moving horizontally, and the dispersing effect of the material is further improved.

[0021] 3. Along the length direction of the mounting frame, a plurality of sliding grooves are arranged, a mounting block is arranged in each sliding groove, a mounting rod and a scatterer are arranged on each mounting block, the scattering effect on the materials can be further improved, the sticking of the materials on the conveying device can be further reduced, the collection of the materials is further facilitated, and the waste of the materials is avoided.

[0022] 4. In actual use, the second connecting rod always has a downward movement trend under the action of the second elastic member, so that the bottom of the scatterer and the conveying device can be tightly abutted, and the scattering effect on the materials is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The overall structural schematic diagram of the embodiment of the present application;

[0024] Figure 2 The internal structure schematic diagram of the mounting frame of the embodiment of the present application;

[0025] Figure 3 The structural schematic diagram of the driving device of the embodiment of the present application;

[0026] Figure 4 The sectional view of the mounting sleeve of the embodiment of the present application;

[0027] Figure 5 The sectional view of the connecting sleeve of the embodiment of the present application.

[0028] Icon: 1, conveying device; 11, rack; 12, conveying belt; 13, conveying motor; 2, mounting frame; 21, feeder; 22, circulating air port; 23, circulating dryer; 3, mounting block; 31, mounting rod; 311, first connecting rod; 312, second connecting rod; 32, scatterer; 4, driving device; 41, driving motor; 42, lead screw; 43, sliding groove; 44, rack; 45, guide rod; 46, guide hole; 47, gear; 5, mounting sleeve; 51, limiting piece; 52, connecting groove; 53, annular groove; 54, limiting groove; 55, strip-shaped groove; 56, first elastic member; 57, external thread; 58, internal thread; 59, strip-shaped block; 6, connecting sleeve; 61, connecting hole; 62, second elastic member. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiment of the present application more clear, the technical scheme in the embodiment of the present application will be described clearly and completely below in combination with the drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiments of the present application, not all the embodiments. The components of the embodiment of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] The following reference Figures 1 to 5 The present invention is described in further detail.

[0031] Reference Figure 1 A belt dryer with hot air circulation includes a conveyor 1, a mounting frame 2 is provided on the conveyor 1, and a feeder 21 is provided on the top of the mounting frame 2. The material to be dried can be put onto the conveyor 1 through the feeder 21. Figure 1 The conveying device 1 includes a frame 11, a conveyor belt 12, a conveyor roller (not shown in the figure) and a conveyor motor 13. The conveyor motor 13 is fixedly installed on the frame 11, and the conveyor roller is rotatably arranged at both ends of the frame 11. The conveyor belt 12 is wound around the conveyor roller, and the output shaft of the conveyor motor 13 is transmission-connected to the conveyor roller.

[0032] Among them, reference Figure 1 、 2 A circulating dryer 23 is provided on the mounting frame 2 , and a plurality of circulating air ports 22 are provided on the top of the mounting frame 2 . The circulating dryer 23 can dry the material on the conveying device 1 with circulating hot air through the circulating air ports 22 .

[0033] Among them, reference Figure 2 A mounting block 3 is slidingly provided on the mounting frame 2 along a direction perpendicular to the length of the conveying device 1. There are multiple mounting blocks 3, and multiple mounting blocks 3 are arranged on the mounting frame 2 along the length direction of the mounting frame 2. As an embodiment of the present invention, there are four mounting blocks 3.

[0034] Reference Figure 2 、 3 A mounting rod 31 is provided on each mounting block 3 for rotation in the vertical direction, a scrambler 32 is provided at the bottom end of the mounting rod 31, and the bottom of the scrambler 32 is used to abut against the conveying device 1. A driving device 4 is provided on the mounting frame 2, and the driving device 4 is used to drive the mounting block 3 to move on the mounting frame 2.

[0035] As an embodiment of the present invention, refer to Figure 3 The drive device 4 includes a drive motor 41 and a lead screw 42. A chute 43 is defined on the mounting frame 2, perpendicular to the length of the conveyor 1. Multiple chute 43 are provided, evenly spaced along the length of the mounting frame 2. The mounting blocks 3 correspond one to one with the chute 43. In one embodiment of the present invention, four chute 43 are defined. The mounting block 3 slides within the chute 43 along its length, and the lead screw 42 rotates within the chute 43 along its length. The drive motor 41 is fixed to the mounting frame 2, and the output shaft of the drive motor 41 is in transmission connection with the lead screw 42. The mounting block 3 is threadedly sleeved onto the lead screw 42.

[0036] Among them, reference Figure 2 、 3 The screw 42 is configured as a reciprocating screw, that is, two spirals with opposite rotation directions are provided on the screw 42, and the two spirals are connected to each other.

[0037] Reference Figure 3 Two mounting rods 31 are provided on each mounting block 3, and two racks 44 are provided at the notch of each slide groove 43. The two racks 44 are respectively arranged on both sides of the notch of the slide groove 43. A gear 47 is coaxially fixed on the top of each mounting rod 31, and the two gears 47 are respectively engaged with the two racks 44 on both sides of the slide groove 43.

[0038] Reference Figure 3 A rack 44 is fixedly provided at the notch of each slide groove 43 along the length direction of the slide groove 43, and a gear 47 is coaxially fixedly sleeved on the top of the mounting rod 31. The gear 47 and the rack 44 are engaged with each other, and the top of the rack 44 is used to be slidably connected to the bottom of the mounting block 3.

[0039] In addition, as an embodiment of the present invention, a sliding layer is covered on the bottom of the mounting block 3, and the sliding layer is used to be slidingly connected to the top of the rack 44. The material of the sliding layer is set to polytetrafluoroethylene, which can effectively reduce the friction between the bottom of the mounting block 3 and the top of the rack 44, thereby facilitating the movement of the mounting block 3 in the slide groove 43, and at the same time reducing the wear between the mounting block 3 and the top of the rack 44.

[0040] Among them, reference Figure 3 A guide rod 45 is fixedly disposed in each chute 43 along its length. Two guide rods 45 are disposed in each chute 43, one on either side of the lead screw 42. Guide holes 46 are provided in the mounting block 3 for the guide rods 45 to pass through. The provision of the guide rods 45 effectively improves the stability of the mounting block 3 as it moves within the chute 43, thereby enhancing the reliability of the entire device during actual use.

[0041] Reference Figure 3 、 4 and Figure 5 A mounting sleeve 5 is slidingly sleeved on the bottom of the mounting rod 31, and a scrambler 32 is fixedly set at the bottom of the mounting sleeve 5. The mounting sleeve 5 and the mounting rod 31 are detachably connected. A limiting member 51 is set on the mounting sleeve 5, and the limiting member 51 is used to limit the position of the mounting sleeve 5 on the mounting rod 31.

[0042] As an embodiment of the present invention, refer to Figure 4The limiting piece 51 is provided as a limiting pin, a connecting groove 52 for sliding connection of the limiting piece 51 is formed on the bottom of the mounting rod 31 along the axial direction of the mounting rod 31, the bottom of the connecting groove 52 is provided through, an annular groove 53 is formed on the top of the connecting groove 52 along the circumferential direction of the mounting rod 31, and a limiting groove 54 for clamping of the limiting piece 51 is formed on the end of the annular groove 53 away from the connecting groove 52 along the axial direction of the mounting rod 31.

[0043] Referring to Figure 4 A strip-shaped groove 55 is formed on the inner wall of the mounting sleeve 5 along the vertical direction, a strip-shaped block 59 is slidingly arranged in the strip-shaped groove 55, the limiting piece 51 is fixedly arranged at the end of the strip-shaped block 59 away from the strip-shaped groove 55, a first elastic piece 56 is arranged in the strip-shaped groove 55 and used for driving the strip-shaped block 59 to move towards the direction away from the conveying device 1, an external thread 57 is arranged on the bottom of the mounting rod 31, an internal thread 58 matched with the external thread 57 is arranged on the inner wall of the mounting sleeve 5, and the connecting groove 52 and the limiting groove 54 are separately arranged on the upper and lower sides of the annular groove 53.

[0044] As an embodiment of the present application, referring to Figure 4 The first elastic piece 56 is provided as a tension spring, one end of the tension spring is fixedly connected with the top of the strip-shaped block 59, and the other end is fixedly connected with the inner top wall of the strip-shaped groove 55

[0045] In actual use, when the disperser 32 needs to be installed, first, the mounting sleeve 5 is aligned with the bottom of the mounting rod 31, then the mounting sleeve 5 is rotated so that the limiting piece 51 is aligned with the bottom opening of the connecting groove 52, then the mounting sleeve 5 is driven to move upwards along the mounting rod 31, thereby the limiting piece 51 is inserted into the connecting groove 52, when the limiting piece 51 abuts against the top of the connecting groove 52, the mounting sleeve 5 is continuously driven to move upwards, at this time, the top of the limiting piece 51 abuts against the top of the connecting groove 52, thereby the strip-shaped block 59 moves in the strip-shaped groove 55, the strip-shaped block 59 and the limiting piece 51 are displaced relative to the mounting sleeve 5, thereby the first elastic piece 56 is stretched, when the external thread 57 and the internal thread 58 are engaged with each other, the mounting sleeve 5 is rotated, the mounting sleeve 5 drives the limiting piece 51 to rotate in the annular groove 53, the internal thread 58 and the external thread 57 are continuously engaged, with the deflection of the mounting sleeve 5, the limiting piece 51 finally falls into the limiting groove 54, at this time, the limiting piece 51 has a movement tendency of moving upwards under the action of the first elastic piece 56, thereby the limiting piece 51 is clamped into the limiting groove 54, the deflection angle of the mounting sleeve 5 at the bottom of the mounting rod 31 is limited, the mounting sleeve 5 can be effectively prevented from being separated from the mounting rod 31 during the movement of the disperser 32, and the reliability and stability of the device in actual use are effectively improved.

[0046] wherein, with reference to Figure 3 , 4 and Figure 5 , the mounting rod 31 comprises a first connecting rod 311 and a second connecting rod 312, the top of the first connecting rod 311 is rotationally connected with the bottom of the mounting block 3, the bottom of the second connecting rod 312 is connected with the disperser 32, a connecting sleeve 6 is arranged at the top of the second connecting rod 312, a connecting hole 61 for the first connecting rod 311 to insert is arranged at the top of the connecting sleeve 6, and a second elastic member 62 is arranged in the connecting sleeve 6, the second elastic member 62 is used to drive the second connecting rod 312 to move towards the direction away from the first connecting rod 311.

[0047] A connecting groove 52 is arranged at the bottom of the second connecting rod 312 in the vertical direction, the mounting sleeve 5 is sleeved at the bottom of the second connecting rod 312, the top of the first connecting rod 311 is coaxially fixedly sleeved with a gear 47, and the gear 47 is intermeshed with the rack 44.

[0048] As an embodiment of the present application, with reference to Figure 5 , the second elastic member 62 is a compression spring, one end of the compression spring is fixedly connected with the bottom of the connecting sleeve 6, and the other end is fixedly connected with the bottom of the first connecting rod 311. In actual use, an anti-twist outer skin is arranged on the surface of the second elastic member 62, so as to avoid the second elastic member 62 from being twisted in actual use, and further avoid the first connecting rod 311 and the second connecting rod 312 from being twisted.

[0049] In actual use, the second connecting rod 312 always has a downward movement trend under the action of the second elastic member 62, and further makes the bottom of the disperser 32 tightly abut against the material on the conveying device 1, and further effectively improves the dispersing effect of the disperser 32 on the material.

[0050] The implementation principle of the hot air circulating belt dryer proposed in the embodiment of the present application is as follows:

[0051] When the material is dried, the material is laid on the conveying device 1, the driving motor 41 is started at the same time the circulating dryer is started, the driving motor 41 drives the screw rod 42 to rotate, the screw rod 42 drives the mounting block 3 to move in the sliding groove 43, with the movement of the mounting block 3, the gear 47 on the top of the mounting rod 31 meshes with the rack 44, thereby driving the mounting rod 31 to deflect on the mounting block 3, and further driving the breaker 32 to rotate, thereby making the breaker 32 horizontally move and also rotate, since the bottom of the breaker 32 abuts against the conveying device 1, thereby being capable of breaking the material laid on the conveying device 1, on the one hand, it can effectively avoid the material from being bonded on the conveying device 1, facilitating the collection of the material, reducing the waste of the material, reducing the production cost, on the other hand, the material is broken during the conveying process, thereby further improving the drying effect of the material and improving the drying quality.

[0052] The preferred embodiments of the present application have been described above with the aid of drawings and are not intended to limit the present application, and for those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hot air circulating belt dryer comprising a conveyor (1) on which a mounting frame (2) is arranged, on which mounting frame (2) a circulating dryer is arranged, characterized in that: A mounting block (3) is arranged on the mounting frame (2) to slide in the direction perpendicular to the length direction of the conveying device (1), a plurality of mounting blocks (3) are arranged on the mounting frame (2) in the length direction of the mounting frame (2), a mounting rod (31) is arranged on each mounting block (3) to rotate in the vertical direction, a scatterer (32) is arranged at the bottom end of the mounting rod (31), the bottom of the scatterer (32) is used to abut against the conveying device (1), a driving device (4) is arranged on the mounting frame (2), and the driving device (4) is used to drive the mounting block (3) to move on the mounting frame (2); The driving device (4) comprises a driving motor (41) and a lead screw (42), a sliding groove (43) is formed on the mounting frame (2) in the direction perpendicular to the length direction of the conveying device (1), a plurality of sliding grooves (43) are uniformly arranged on the mounting frame (2) in the length direction of the mounting frame (2), the mounting block (3) corresponds to the sliding groove (43) in one-to-one correspondence, the mounting block (3) is arranged in the sliding groove (43) to slide in the length direction of the sliding groove (43), the lead screw (42) is arranged in the sliding groove (43) to rotate in the length direction of the sliding groove (43), the driving motor (41) is fixedly arranged on the mounting frame (2), the output shaft of the driving motor (41) is in transmission connection with the lead screw (42), and the mounting block (3) is threadedly sleeved on the lead screw (42); A rack (44) is fixedly arranged on the opening of each sliding groove (43) in the length direction of the sliding groove (43), a gear (47) is coaxially fixedly sleeved on the top of the mounting rod (31), the gear (47) is in meshing connection with the rack (44), and the top of the rack (44) is used to be in sliding connection with the bottom of the mounting block (3); A mounting sleeve (5) is slidably sleeved on the bottom of the mounting rod (31), the scatterer (32) is fixedly arranged at the bottom of the mounting sleeve (5), the mounting sleeve (5) is detachably connected with the mounting rod (31), and a limiting piece (51) is arranged on the mounting sleeve (5), the limiting piece (51) is used to limit the position of the mounting sleeve (5) on the mounting rod (31); The limiting piece (51) is a limiting pin, a connecting groove (52) is formed on the bottom of the mounting rod (31) in the axial direction of the mounting rod (31) and is used for sliding connection of the limiting piece (51), the bottom of the connecting groove (52) is penetrative, an annular groove (53) is formed on the top of the connecting groove (52) in the circumferential direction of the mounting rod (31), and a limiting groove (54) is formed on the end of the annular groove (53) away from the connecting groove (52) in the axial direction of the mounting rod (31) and is used for clamping of the limiting piece (51). A strip-shaped slot (55) is formed in the inner wall of the mounting sleeve (5) in the vertical direction, a strip-shaped block (59) is slidably arranged in the strip-shaped slot (55), the limiting piece (51) is fixedly arranged at one end of the strip-shaped block (59) away from the strip-shaped slot (55), a first elastic piece (56) is arranged in the strip-shaped slot (55), and the first elastic piece (56) is used for driving the strip-shaped block (59) to move towards the direction away from the conveying device (1), an outer thread (57) is arranged at the bottom of the mounting rod (31), and an inner thread (58) matched with the outer thread (57) is arranged on the inner wall of the mounting sleeve (5), and the connecting slot (52) and the limiting slot (54) are arranged on the upper and lower sides of the annular slot (53).

2. A through-circulation hot-air belt dryer according to claim 1, characterized in that: A guide rod (45) is fixedly arranged in each chute (43) in the length direction of the chute (43), two guide rods (45) are arranged in each chute (43), and the two guide rods (45) are arranged on the two sides of the lead screw (42).

3. A through-circulation hot-air belt dryer according to claim 1, characterized in that: Two mounting rods (31) are arranged on each mounting block (3), two racks (44) are arranged at the notches of each chute (43), the two racks (44) are arranged on the two sides of the notches of the chute (43), and a gear (47) is coaxially fixedly sleeved at the top of each mounting rod (31). Two gears (47) are respectively engaged with the two racks (44) on the two sides of the chute (43).

4. A through-circulation hot-air belt dryer according to claim 1, characterized in that: A sliding layer is arranged on the bottom of the mounting block (3), and the sliding layer is used for sliding connection with the top of the rack (44).

5. A through-circulation hot-air belt dryer according to any one of claims 1 to 4, characterized in that: The mounting rod (31) comprises a first connecting rod (311) and a second connecting rod (312), the top of the first connecting rod (311) is rotatably connected with the bottom of the mounting block (3), the bottom of the second connecting rod (312) is connected with the scatterer (32), a connecting sleeve (6) is arranged at the top of the second connecting rod (312), a connecting hole (61) for inserting the first connecting rod (311) is formed in the top of the connecting sleeve (6), and a second elastic piece (62) is arranged in the connecting sleeve (6). The second elastic piece (62) is used for driving the second connecting rod (312) to move towards the direction away from the first connecting rod (311).

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