Hot air circulation belt dryer

Abstract

The invention provides a hot air circulation belt dryer which comprises a conveying device, a mounting frame is arranged on the conveying device, a circulation dryer is arranged on the mounting frame, a plurality of mounting blocks are arranged on the mounting frame in a sliding mode in the direction perpendicular to the length direction of the conveying device, and the circulating dryer is arranged on the mounting block. A plurality of mounting blocks are arranged on the mounting frame in the length direction of the mounting frame, mounting rods are rotationally arranged on the mounting blocks in the vertical direction, scattering devices are arranged at the bottom ends of the mounting rods, the bottoms of the scattering devices are used for abutting against the conveying device, and a driving device is arranged on the mounting frame; by means of the material collecting device, materials can be conveniently collected, material waste is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of drying equipment, and in particular to a hot air circulating belt dryer. Background Art

[0002] The contents in this section merely provide background information related to the present invention and may not constitute prior art.

[0003] Belt dryer is a continuous drying equipment for batch production. It is used for drying flake, strip and granular materials with good air permeability. It is particularly suitable for dehydrated vegetables, catalysts, Chinese herbal medicines and other materials with high moisture content but high material temperature. Belt dryer has the advantages of fast drying speed, high evaporation intensity and good product quality. For dehydrated filter cake-like paste materials, they usually need to be granulated or made into strips before drying. Belt dryer is widely used in chemical, video, medicine, building materials and other industries. Existing belt dryer equipment usually supplies materials directly to the conveyor belt through the feeding system, and then dries the materials through the drying box.

[0004] A Chinese patent application with application publication number CN116379746A discloses a belt dryer with hot air circulation, comprising a frame, wherein two ends of the frame are rotatably connected with a first rotating shaft and a second rotating shaft respectively, a first rotating roller is fixedly connected to the outside of the first rotating shaft, a second rotating roller is fixedly connected to the outside of the second rotating shaft, a conveyor belt is sleeved between the first rotating roller and the second rotating roller, support plates are fixedly connected to the outer walls of both sides of the frame, the support plates are located on one end of the frame close to the second rotating shaft, a first slide groove is provided on the top of the support plate, a telescopic plate is slidably connected to the inside of the first slide groove, a fixed seat is fixedly connected to the top of the telescopic plate, a water inlet pipe and a first air duct are both distributed parallel to 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 slider drives the hopper to move back and forth, the material is poured onto the conveyor belt, and then the material on the conveyor belt can be dried.

[0005] However, the above-mentioned related technologies have the following defects. In actual use, since the belt dryer is mainly used to dry paste-like boring materials such as dehydrated filter cakes, after drying, the dried materials are easily adhered to the pressure rollers and the conveyor belts and are difficult to fall off, resulting in subsequent difficulties in collecting the materials. Some materials are adhered to the conveyor belts, and after multiple dryings, the internal structure of the materials is destroyed, resulting in material waste and increased production costs. Summary of the invention

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

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] A belt dryer with hot air circulation comprises a conveying device, a mounting frame is arranged on the conveying device, a circulating dryer is arranged on the mounting frame, a mounting block is slidably arranged on the mounting frame along a direction perpendicular to the length of the conveying device, a plurality of mounting blocks are arranged on the mounting frame along the length of the mounting frame, mounting rods are rotatably arranged on the mounting blocks along a vertical direction, a scrambler is arranged at the bottom end of the mounting rod, the bottom of the scrambler is used to abut against the conveying device, a driving device is arranged on the mounting frame, and the driving device is used to drive the mounting block to move on the mounting frame.

[0009] In some possible embodiments, the driving device includes a driving motor and a screw. A slide groove is opened on the mounting frame along a direction perpendicular to the length of the conveying device. There are multiple slide grooves, and the multiple slide grooves are evenly arranged along the length of the mounting frame. The mounting block corresponds to the slide groove one by one. The mounting block is slidably arranged in the slide groove along the length of the slide groove. The screw is rotatably arranged in the slide groove along the length of the slide groove. The driving motor is fixedly arranged on the mounting frame. The output shaft of the driving motor is transmission-connected to the screw. The mounting block is threadedly sleeved on the screw.

[0010] In some possible embodiments, a rack is fixedly provided at the notch of each slide groove along the length direction of the slide groove, a gear is coaxially fixedly sleeved on the top of the mounting rod, the gear and the rack are meshed with each other, 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 each slide groove along the length direction of the slide groove, two guide rods are arranged in each slide groove, the two guide rods are arranged on both sides of the screw, and a guide hole for the guide rod to pass through is opened on the mounting block.

[0012] In some possible embodiments, a mounting sleeve is provided on the bottom sliding sleeve of the mounting rod, the scatterer is fixedly provided on the bottom of the mounting sleeve, the mounting sleeve is detachably connected to the mounting rod, and a limiting member is provided on the mounting sleeve, and the limiting member is used to limit the position of the mounting sleeve on the mounting rod.

[0013] In some possible embodiments, the limiting member is configured as a limiting pin, and a connecting groove for sliding connection of the limiting member is opened at the bottom of the mounting rod along the axial direction of the mounting rod, the bottom of the connecting groove is through-set, and an annular groove is opened at the top of the connecting groove along the circumference of the mounting rod, and a limiting groove for the limiting member to be inserted into is opened at one end of the annular groove away from the connecting groove along the axial direction of the mounting rod.

[0014] In some possible embodiments, a strip groove is provided on the inner wall of the mounting sleeve in the vertical direction, a strip block is slidably provided in the strip groove, the limiting member is fixedly provided at one end of the strip block away from the strip groove, a first elastic member is provided in the strip groove, the first elastic member is used to drive the strip block to move in a direction away from the conveying device, an external thread is provided at the bottom of the mounting rod, an internal thread matching the external thread is provided on the inner wall of the mounting sleeve, and the connecting groove and the limiting groove are respectively provided on the upper and lower sides of the annular groove.

[0015] In some possible embodiments, two mounting rods are provided on each mounting block, two racks are provided at the notch of each slide slot, the two racks are provided on both sides of the notch of the slide slot, and a gear is coaxially fixedly sleeved on the top of each mounting rod, and the two gears are respectively meshed with the two racks on both sides of the slide slot.

[0016] In some possible embodiments, a sliding layer is provided on the bottom of the mounting block, and the sliding layer is used for being slidingly connected with the top of the rack.

[0017] In some possible embodiments, the mounting rod includes a first connecting rod and a second connecting rod, the top of the first connecting rod is rotatably connected to the bottom of the mounting block, the bottom of the second connecting rod is connected to the scrambler, a connecting sleeve is provided at the top of the second connecting rod, a connecting hole for inserting the first connecting rod is provided at the top of the connecting sleeve, a second elastic member is provided in the connecting sleeve, and the second elastic member is used to drive the second connecting rod to move in a direction away from the first connecting rod.

[0018] In summary, the technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0019] 1. When drying the material, the material is spread on the conveying device, and the driving device is started at the same time as the circulating dryer. The driving device drives the mounting block to move on the mounting frame, and the mounting block drives the scatterer to move. Since the bottom of the scatterer abuts against the conveying device, the material laid on the conveying device can be scattered. On the one hand, it can effectively prevent the material from sticking to the conveying device, facilitate the collection of the material, reduce the waste of the material, and reduce the production cost. On the other hand, scattering the material during the conveying process can further improve the drying effect of the material and improve the drying quality;

[0020] 2. When drying the material, start the drive motor, the drive motor drives the lead screw to rotate, and the lead screw drives the mounting block to move in the slide slot. As the mounting block moves, the gear on the top of the mounting rod meshes with the rack, thereby driving the mounting rod to deflect on the mounting block, and further driving the scatterer to rotate, so that the scatterer rotates while moving horizontally, further improving the scattering effect of the material;

[0021] 3. Multiple chutes are provided along the length direction of the mounting frame, and a mounting block is provided in each chute. A mounting rod and a scatterer are provided on each mounting block, which can further improve the scattering effect of the material, further reduce the adhesion of the material on the conveying device, further facilitate the collection of the material, and avoid the waste of the material;

[0022] 4. In actual use, the second connecting rod always has a downward movement tendency under the action of the second elastic member, thereby being able to drive the bottom of the scatterer to form a close contact with the conveying device, further improving the scattering effect of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the overall structure of an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the internal structure of a mounting frame according to an embodiment of the present invention;

[0025] Figure 3 is a schematic structural diagram of a driving device according to an embodiment of the present invention;

[0026] Figure 4 is a cross-sectional view of a mounting sleeve according to an embodiment of the present invention;

[0027] Figure 5 It is a cross-sectional view of a connecting sleeve according to an embodiment of the present invention.

[0028] Icons: 1. Conveying device; 11. Rack; 12. Conveyor belt; 13. Conveying motor; 2. Mounting frame; 21. Loader; 22. Circulating air outlet; 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. Slide 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 groove; 56. First elastic piece; 57. External thread; 58. Internal thread; 59. Strip block; 6. Connecting sleeve; 61. Connecting hole; 62. Second elastic piece. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention 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 arranged on the conveyor 1, and a feeder 21 is arranged on the top of the mounting frame 2. The material to be dried can be put on 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 drivingly connected to the conveyor roller.

[0032] Among them, refer to Figure 1 , 2 A circulating dryer 23 is arranged on the mounting frame 2 , and a plurality of circulating air ports 22 are opened on the top of the mounting frame 2 . The circulating dryer 23 can perform circulating hot air drying on the materials on the conveying device 1 through the circulating air ports 22 .

[0033] Among them, refer to Figure 2 A mounting block 3 is slidably arranged on the mounting frame 2 along a direction perpendicular to the length of the conveying device 1. A plurality of mounting blocks 3 are arranged on the mounting frame 2 along the length of the mounting frame 2. As an embodiment of the present invention, four mounting blocks 3 are arranged.

[0034] Reference Figure 2 , 3 A mounting rod 31 is provided on each mounting block 3 for rotation in a 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 driving device 4 includes a driving motor 41 and a lead screw 42. A slide groove 43 is provided on the mounting frame 2 in a direction perpendicular to the length of the conveying device 1. A plurality of slide grooves 43 are provided. The plurality of slide grooves 43 are evenly provided along the length of the mounting frame 2. The mounting block 3 corresponds to the slide groove 43 one by one. As an embodiment of the present invention, four slide grooves 43 are provided. The mounting block 3 is slidably provided in the slide groove 43 along the length of the slide groove 43. The lead screw 42 is rotatably provided in the slide groove 43 along the length of the slide groove 43. The driving motor 41 is fixedly provided on the mounting frame 2. The output shaft of the driving motor 41 is transmission-connected with the lead screw 42. The mounting block 3 is threadedly sleeved on the lead screw 42.

[0036] Among them, refer to Figure 2 , 3 The lead screw 42 is configured as a reciprocating lead screw, that is, two spirals with opposite rotation directions are provided on the lead 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 slot 43. The two racks 44 are arranged on both sides of the notch of the slide slot 43. A gear 47 is coaxially fixedly sleeved on the top of each mounting rod 31, and the two gears 47 are respectively meshed with the two racks 44 on both sides of the slide slot 43.

[0038] Reference Figure 3 A rack 44 is fixedly arranged 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 meshed with each other, and the top of the rack 44 is used for sliding connection with 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 with 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, refer to Figure 3 A guide rod 45 is fixedly arranged in each slide groove 43 along the length direction of the slide groove 43, and two guide rods 45 are arranged in each slide groove 43. The two guide rods 45 are arranged on both sides of the lead screw 42, and a guide hole 46 for the guide rod 45 to pass through is opened on the mounting block 3. By providing the guide rod 45, the stability of the mounting block 3 when moving in the slide groove 43 can be effectively improved, thereby improving the reliability of the entire device during actual use.

[0041] Reference Figure 3 , 4 and Figure 5 A mounting sleeve 5 is slidably sleeved at the bottom of the mounting rod 31, and a scatterer 32 is fixedly arranged 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 arranged 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 member 51 is set as a limiting pin, and a connecting groove 52 for sliding connection of the limiting member 51 is opened at the bottom of the mounting rod 31 along the axial direction of the mounting rod 31, the bottom of the connecting groove 52 is through-set, and an annular groove 53 is opened at the top of the connecting groove 52 along the circumference of the mounting rod 31, and a limiting groove 54 for the limiting member 51 to be inserted is opened at the end of the annular groove 53 away from the connecting groove 52 along the axial direction of the mounting rod 31.

[0043] Among them, refer to Figure 4 A strip groove 55 is provided on the inner wall of the mounting sleeve 5 in the vertical direction, a strip block 59 is slidably provided in the strip groove 55, a limiting member 51 is fixedly provided at one end of the strip block 59 away from the strip groove 55, a first elastic member 56 is provided in the strip groove 55, and the first elastic member 56 is used to drive the strip block 59 to move in a direction away from the conveying device 1, an external thread 57 is provided at the bottom of the mounting rod 31, an internal thread 58 matched with the external thread 57 is provided on the inner wall of the mounting sleeve 5, and the connecting groove 52 and the limiting groove 54 are respectively provided on the upper and lower sides of the annular groove 53.

[0044] As an embodiment of the present invention, refer to Figure 4 The first elastic member 56 is configured as a tension spring, one end of which is fixedly connected to the top of the strip block 59, and the other end of which is fixedly connected to the inner top wall of the strip groove 55.

[0045] When the breaker 32 needs to be installed in practice, the installation sleeve 5 is first driven to align with the bottom of the installation rod 31, and then the installation sleeve 5 is rotated to align the limit member 51 with the bottom opening of the connecting groove 52, and then the installation sleeve 5 is driven to move upward along the installation rod 31, and then the limit member 51 is driven to be inserted into the connecting groove 52. After the limit member 51 abuts against the top of the connecting groove 52, the installation sleeve 5 continues to be driven to move upward. At this time, the top of the limit member 51 abuts against the top of the connecting groove 52, so that the strip block 59 moves in the strip groove 55, so that the strip block 59 and the limit member 51 are displaced relative to the installation sleeve 5, so that the first elastic member 56 can be stretched. As the mounting sleeve 5 continues to move upward, after the external thread 57 and the internal thread 58 engage with each other, the mounting sleeve 5 is rotated, and the mounting sleeve 5 drives the limiting member 51 to rotate in the annular groove 53, and the internal thread 58 and the external thread 57 continue to engage with each other. As the mounting sleeve 5 deflects, the limiting member 51 finally falls into the limiting groove 54. At this time, the limiting member 51 has a tendency to move upward under the action of the first elastic member 56, and is thereby stuck in the limiting groove 54, which can limit the deflection angle of the mounting sleeve 5 at the bottom of the mounting rod 31, and can effectively prevent the mounting sleeve 5 from being separated from the mounting rod 31 during the movement of the scatterer 32, thereby effectively improving the reliability and stability of the device during actual use.

[0046] Among them, refer to Figure 3 , 4 and Figure 5 The mounting rod 31 includes a first connecting rod 311 and a second connecting rod 312. The top of the first connecting rod 311 is rotatably connected to the bottom of the mounting block 3, and the bottom of the second connecting rod 312 is connected to the scatterer 32. A connecting sleeve 6 is provided at the top of the second connecting rod 312. A connecting hole 61 for inserting the first connecting rod 311 is provided at the top of the connecting sleeve 6. A second elastic member 62 is provided in the connecting sleeve 6. The second elastic member 62 is used to drive the second connecting rod 312 to move in a direction away from the first connecting rod 311.

[0047] The connecting groove 52 is vertically opened at the bottom of the second connecting rod 312 , the mounting sleeve 5 is sleeved at the bottom of the second connecting rod 312 , and a gear 47 is coaxially fixedly sleeved on the top of the first connecting rod 311 , and the gear 47 is meshed with the rack 44 .

[0048] As an embodiment of the present invention, refer to Figure 5 The second elastic member 62 is configured as a compression spring, one end of which is fixedly connected to the bottom of the connecting sleeve 6, and the other end of which is fixedly connected to the bottom of the first connecting rod 311. In actual use, an anti-twist outer skin is provided on the surface of the second elastic member 62, so as to prevent the second elastic member 62 from twisting during actual use, thereby preventing the first connecting rod 311 and the second connecting rod 312 from twisting.

[0049] During actual use, the second connecting rod 312 always has a downward movement tendency under the action of the second elastic member 62, so that the bottom of the scatterer 32 is in close contact with the material on the conveying device 1, thereby effectively improving the scattering effect of the scatterer 32 on the material.

[0050] The implementation principle of a hot air circulation belt dryer proposed in an embodiment of the present invention is:

[0051] When the material is dried, the material is spread on the conveying device 1, and the driving motor 41 is started while the circulating dryer is started. The driving motor 41 drives the lead screw 42 to rotate, and the lead screw 42 drives the mounting block 3 to move in the slide groove 43. As the mounting block 3 moves, the gear 47 at the top of the mounting rod 31 engages with the rack 44, thereby driving the mounting rod 31 to deflect on the mounting block 3, and further driving the scatterer 32 to rotate, so that the scatterer 32 rotates while moving horizontally. Since the bottom of the scatterer 32 abuts against the conveying device 1, the material laid on the conveying device 1 can be scattered. On the one hand, it can effectively prevent the material from sticking to the conveying device 1, facilitate the collection of the material, reduce the waste of the material, and reduce the production cost. On the other hand, scattering the material during the transmission process can further improve the drying effect of the material and improve the drying quality.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hot air circulation belt dryer, comprising a conveyor (1), a mounting frame (2) being arranged on the conveyor (1), and a circulating dryer being arranged on the mounting frame (2), characterized in that: A mounting block (3) is slidably arranged on the mounting frame (2) along a direction perpendicular to the length of the conveying device (1), and a plurality of mounting blocks (3) are arranged on the mounting frame (2) along the length of the mounting frame (2). A mounting rod (31) is rotatably arranged on the mounting block (3) along a vertical direction, and a scatterer (32) is arranged at the bottom end of the mounting rod (31), and 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).

2. A hot air circulation belt dryer according to claim 1, characterized in that: The driving device (4) comprises a driving motor (41) and a lead screw (42). A slide groove (43) is provided on the mounting frame (2) along a direction perpendicular to the length of the conveying device (1). The slide groove (43) is provided with a plurality of slide grooves, and the plurality of slide grooves (43) are evenly arranged along the length of the mounting frame (2). The mounting block (3) corresponds to the slide groove (43) one by one. The mounting block (3) is slidably arranged in the slide groove (43) along the length of the slide groove (43). The lead screw (42) is rotatably arranged in the slide groove (43) along the length of the slide groove (43). The driving motor (41) is fixedly arranged on the mounting frame (2). The output shaft of the driving motor (41) is transmission-connected to the lead screw (42). The mounting block (3) is threadedly sleeved on the lead screw (42).

3. A hot air circulation belt dryer according to claim 2, characterized in that: A rack (44) is fixedly arranged 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 meshed with each other, and the top of the rack (44) is used for sliding connection with the bottom of the mounting block (3).

4. The hot air circulation belt dryer according to claim 2, characterized in that: A guide rod (45) is fixedly arranged in each slide groove (43) along the length direction of the slide groove (43), two guide rods (45) are arranged in each slide groove (43), the two guide rods (45) are arranged on both sides of the lead screw (42), and a guide hole (46) for the guide rod (45) to pass through is opened on the mounting block (3).

5. The hot air circulation belt dryer according to claim 1, characterized in that: A mounting sleeve (5) is slidably sleeved at 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) and the mounting rod (31) are detachably connected; a limiting member (51) is arranged on the mounting sleeve (5); the limiting member (51) is used to limit the position of the mounting sleeve (5) on the mounting rod (31).

6. A hot air circulation belt dryer according to claim 5, characterized in that: The limiting member (51) is arranged as a limiting pin, and a connecting groove (52) for sliding connection of the limiting member (51) is provided at the bottom of the mounting rod (31) along the axial direction of the mounting rod (31), the bottom of the connecting groove (52) is penetrated, an annular groove (53) is provided at the top of the connecting groove (52) along the circumference of the mounting rod (31), and a limiting groove (54) for the limiting member (51) to be inserted is provided at one end of the annular groove (53) away from the connecting groove (52) along the axial direction of the mounting rod (31).

7. The hot air circulation belt dryer according to claim 6, characterized in that: A strip groove (55) is provided on the inner wall of the installation sleeve (5) in the vertical direction, a strip block (59) is slidably provided in the strip groove (55), the limiting member (51) is fixedly provided at one end of the strip block (59) away from the strip groove (55), a first elastic member (56) is provided in the strip groove (55), the first elastic member (56) is used to drive the strip block (59) to move in a direction away from the conveying device (1), an external thread (57) is provided at the bottom of the installation rod (31), an internal thread (58) matched with the external thread (57) is provided on the inner wall of the installation sleeve (5), and the connecting groove (52) and the limiting groove (54) are respectively provided on the upper and lower sides of the annular groove (53).

8. The hot air circulation belt dryer according to claim 3, characterized in that: Two mounting rods (31) are arranged on each mounting block (3), two racks (44) are arranged at the notch of each slide groove (43), and the two racks (44) are arranged on both sides of the notch of the slide groove (43). A gear (47) is coaxially fixedly sleeved on the top of each mounting rod (31), and the two gears (47) are respectively meshed with the two racks (44) on both sides of the slide groove (43).

9. The hot air circulation belt dryer according to claim 3, characterized in that: The bottom of the mounting block (3) is covered with a sliding layer, which is used for sliding connection with the top of the rack (44).

10. A hot air circulation belt dryer according to any one of claims 1 to 9, characterized in that: The mounting rod (31) comprises a first connecting rod (311) and a second connecting rod (312), wherein the top of the first connecting rod (311) is rotatably connected to the bottom of the mounting block (3), and the bottom of the second connecting rod (312) is connected to the scrambler (32). A connecting sleeve (6) is arranged at the top of the second connecting rod (312), and a connecting hole (61) for inserting the first connecting rod (311) is provided at the top of the connecting sleeve (6). A second elastic member (62) is arranged in the connecting sleeve (6), and the second elastic member (62) is used to drive the second connecting rod (312) to move in a direction away from the first connecting rod (311).

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