A steam tube rotary kiln dryer for curdlan preparation

Abstract

A steam tube rotary kiln dryer for curdlan preparation, which relates to the technical field of rotary kiln dryers, includes a fixed seat. A support frame is rotatably arranged on the top of the fixed seat. A rotary kiln body rotatably arranged and two fixedly arranged tube boxes are arranged on the top of the support frame. The two ends of the rotary kiln body are correspondingly rotatably connected to the two tube boxes. A fixed circular plate is fixedly arranged on the inner wall of the tube box. A number of rows of steam tubes are arranged inside the rotary kiln body. The adjacent two rows of steam tubes are arranged in a staggered manner. A number of arc-shaped grooves are arranged along the circumferential direction on the outer wall of the steam tube. The two ends of the steam tube located in the feeding area are correspondingly rotatably connected to the two fixed circular plates, and an arc-shaped sleeve is sleeved on its outer wall. The two ends of the arc-shaped sleeve are detachably connected to the two fixed circular plates respectively. The invention solves the problems that the effective heat exchange time between the materials in the feeding area and the steam tubes of the existing steam tube rotary kiln dryer is short, and the uniformity of the material distribution in the feeding area is poor.

Description

Technical Field

[0001] The present invention relates to the technical field of rotary kiln dryers, and particularly to a steam tube rotary kiln dryer for the preparation of curdlan. Background Art

[0002] Curdlan is a β-1,3-glucan polysaccharide produced by microbial fermentation, which has unique gel properties and thermal stability, and is widely used in the fields of food, medicine, and chemical engineering. In the industrial preparation process of curdlan, the wet particles formed after the fermentation broth is extracted and purified need to be dried to reduce the moisture content and ensure the product stability. The steam tube rotary kiln dryer has become the preferred solution due to its efficient and uniform drying characteristics.

[0003] The steam tube rotary kiln dryer mainly consists of a rotary kiln body, steam tubes, a transmission device, and a steam system. When the steam tube rotary kiln dryer is in operation, the internal space of the rotary kiln body is divided into a feeding area and a collecting area. The steam tubes located below the kiln body are buried in the collecting area and directly contact the piled materials, and stably heat the materials by heat conduction. At the same time, during the continuous rotation of the rotary kiln body, the lifting plates arranged inside lift the materials from the collecting area to the upper part, and the materials fall under the action of gravity, forming a dynamic feeding area. During this process, the falling materials contact the steam tubes arranged in the feeding area, and heat exchange is achieved through heat convection and heat radiation.

[0004] In the process of using the existing steam tube rotary kiln dryer, deficiencies have gradually emerged, which are mainly manifested in the following aspects:

[0005] First, the effective heat exchange time between the materials in the feeding area and the steam tubes is short. Specifically, during the operation of the steam tube rotary kiln dryer, the materials in the feeding area freely fall under the action of gravity and collide with the steam tubes. Due to the elastic action between the materials and the surface of the tubes, the collided materials will be quickly bounced off and fall back to the collecting area after multiple rebounds. This dynamic process results in a very short actual effective contact time between the materials and the steam tubes, seriously restricting the effective transfer of heat energy. Moreover, the repeated bouncing of the materials prolongs their residence time in the dryer, increasing the overall drying cycle and resulting in low drying efficiency.

[0006] Second, the material distribution uniformity in the blanking area is poor. Specifically, during the operation of the steam tube rotary kiln dryer, the rotary kiln body drives the lifting plates to rotate synchronously, lifting and transporting the materials in the aggregate area. When the lifting plate just leaves the aggregate area, the materials it carries start to continuously spill. By the time the lifting plate reaches the highest point, the materials it carries have basically fallen out. This phenomenon of premature material spillage leads to extremely uneven material distribution on both sides of the blanking area, with the material spillage being too dense on one side and too sparse on the other. The uneven material distribution directly causes a significant reduction in the contact area between the steam tubes and the materials, resulting in a remarkable decrease in the heat transfer efficiency. Moreover, the uneven blanking distribution also leads to uneven drying, affecting the consistency of the drying quality of the final product.

[0007] In summary, it is obvious that the existing technology has inconveniences and defects in actual use, so it is necessary to improve it. Summary of the Invention

[0008] Aiming at the defects in the existing technology, the technical problem to be solved by the present invention is to provide a steam tube rotary kiln dryer for the preparation of curdlan. During the drying process of the materials by this equipment, the materials falling in the blanking area can maintain a continuous and stable contact state with the steam tubes, completely avoiding the phenomenon of materials colliding and bouncing in traditional equipment, greatly increasing the effective heat exchange time between the materials and the surface of the steam tubes. Moreover, the surface of the steam tubes is always evenly covered by the materials, maximizing the utilization of the heating area and significantly improving the drying efficiency.

[0009] This equipment can achieve uniform distribution and stable flow of the materials in the blanking area. During the drying process, the materials fall evenly, forming a stable material curtain, ensuring that the area around the steam tubes is always evenly covered by the materials. This uniformly distributed material flow increases the effective contact area between the materials and the steam tubes, systematically improving the heat conduction efficiency. Moreover, the uniform material distribution avoids the phenomena of local overheating or insufficient drying, ensuring the consistency of the material drying quality.

[0010] To solve the above problems, the present invention provides the following technical solutions:

[0011] A steam tube rotary kiln dryer for preparing curdlan comprises a fixed seat, a support frame is rotatably provided on the top of the fixed seat, a rotatably arranged rotary kiln body and two fixedly arranged pipe boxes are provided on the top of the support frame, the two ends of the rotary kiln body are correspondingly rotatably connected to the two pipe boxes, a fixed circular plate is fixedly provided on the inner wall of the pipe box, a plurality of rows of steam tubes are provided inside the rotary kiln body, the steam tubes in two adjacent rows are staggered, a plurality of arc grooves are provided on the outer wall of the steam tubes along the circumference, the two ends of the steam tubes located in the blanking area are correspondingly rotatably connected to the two fixed circular plates, and the outer The wall is covered with an arc-shaped sleeve, and the two ends of the arc-shaped sleeve are detachably connected to two fixed circular plates. The two ends of the steam tubes located in the gathering area are fixedly connected to two fixed circular plates. The top of the arc-shaped sleeve is detachably provided with two gathering plates. The outer wall of the arc-shaped sleeve is provided with a discharge trough and a detachable guide arc-shaped plate. The lower outer wall of the arc-shaped sleeve is fixedly connected to a fixed baffle. The inside of the arc-shaped sleeve is provided with an arc-shaped ventilation groove. The arc-shaped ventilation groove and the steam tubes are both connected to the external steam system. The inner wall of the rotary kiln is provided with a guide assembly for lifting the material.

[0012] As an optimized solution, the material guide assembly includes a fixed arc plate fixedly connected to a fixed circular plate, two material retaining rings in frictional contact with the outer wall of the fixed arc plate are fixedly connected to the inner wall of the rotary kiln body, and a number of material guide plates in frictional contact with the outer wall of the fixed arc plate are evenly distributed on the inner wall of the rotary kiln body along the circumferential direction, and the two ends of the material guide plate are in contact with the two material retaining rings respectively, and a material box is fixed to the inner wall of the fixed arc plate, and a material leakage groove is provided through the position of the inner wall of the fixed arc plate in the material box, and a number of material leakage holes are provided through the bottom of the material box, and a driving rod is provided for horizontal reciprocating movement in the material box, and a number of material shifting plates are mounted on the outer wall of the driving rod.

[0013] As an optimized solution, the side wall of the retaining ring is evenly distributed with a plurality of fixedly arranged toggle plates along the circumferential direction, and both ends of the fixed arc-shaped plate are fixedly connected to the two fixed circular plates via a plurality of connecting plates.

[0014] As an optimized solution, the outer walls of the two pipe boxes are respectively fixed with a feed valve and a discharge valve that are connected to each other.

[0015] As an optimized solution, a sliding L-shaped plate is provided on the top of the fixed seat for horizontal sliding. Several swing plates are provided between the sliding L-shaped plate and the support frame. The two ends of the swing plate are rotatably connected to the support frame and the sliding L-shaped plate respectively. Two support plates for supporting the support frame are fixed on the top of the fixed seat. Two driving telescopic cylinders are fixed on the top of the fixed seat. The telescopic ends of the driving telescopic cylinders are fixedly connected to the sliding L-shaped plate.

[0016] As an optimized solution, two girth gears are fixedly sleeved on the outer wall of the rotary kiln body. A number of limiting supporting rollers that are in rolling connection with the girth gears are provided at the top of the supporting frame. The girth gears are restricted within the limiting supporting rollers, and the tube box is fixedly connected to the supporting frame.

[0017] As an optimized solution, a driven gear ring is fixedly sleeved on the outer wall of the rotary kiln body. A driving motor is fixedly provided at the top of the supporting frame, and a control gear that meshes with the driven gear ring is fixedly sleeved on the output shaft of the driving motor.

[0018] As an optimized solution, a number of rotary joints are fixedly provided on the inner wall of the tube box. Both ends of the steam tubes located in the material dropping area penetrate through the fixed circular plate and are fixedly connected to the rotating ends of the rotary joints. The other ends of the rotary joints are connected to an external steam system in communication. Both ends of the steam tubes located in the aggregate area pass through the fixed circular plate and the tube box and are connected to the external steam system in communication. Two air guide pipes that are in communication with the arc-shaped ventilation grooves are fixedly provided on the outer wall of the arc-shaped sleeve. One end of the air guide pipe passes through the fixed circular plate and the tube box and is connected to the external steam system in communication.

[0019] As an optimized solution, a driven gear is fixedly sleeved on the outer wall of the steam tubes located in the material dropping area. A number of servo motors are fixedly provided at the end of one of the fixed circular plates, and a driving gear that meshes with the driven gear is fixedly sleeved on the output shaft of the servo motor.

[0020] As an optimized solution, a control board is provided inside one of the tube boxes. One end of the driving rod passes through the material box and the fixed circular plate and is fixedly connected to the control board. Two reciprocating telescopic cylinders are fixedly provided on the inner wall of the tube box, and the telescopic ends of the reciprocating telescopic cylinders are fixedly connected to the control board.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. When drying materials, the hot steam provided by the external steam system passes through the steam tubes and the arc-shaped ventilation grooves in the arc-shaped sleeve, and then continuously exchanges heat with the steam tubes and the arc-shaped sleeve. The driving motor drives the rotary kiln body to rotate, and then drives the feeding plate and the baffle ring to rotate. When the feeding plate passes through the opening area of the fixed arc plate, the materials in the aggregate area fill the area between two adjacent feeding plates. When the feeding plate rotates upward, it transports the materials. When the materials are transported to the highest position, they enter the material box through the leakage trough. At the same time, the reciprocating telescopic cylinder drives the dialing plate to move back and forth, and then stirs the materials in the material box, so that the materials are evenly distributed in the material box. The materials in the material box are evenly scattered downward through the leakage holes and collected by the aggregate plates in the top row. The servo motor drives the steam tubes in the blanking area to rotate. During the rotation of the steam tubes, the materials between the aggregate plates continuously fill into the arc-shaped grooves. The materials in the arc-shaped grooves rotate with the steam tubes, and the materials continuously exchange heat with the steam tubes and the arc-shaped sleeve during the rotation. When rotating to the discharge trough, the materials are discharged. During the process of discharging the materials through the guiding arc plate, the outer wall of the arc-shaped sleeve continuously exchanges heat with the materials. After the materials complete heat exchange with the first row of steam tubes, they fall downward and enter the second row of steam tubes for heat exchange. In this cycle, after the materials complete heat exchange with the last row of steam tubes, they fall back to the aggregate area again. During the drying process of the materials by this equipment, the materials falling in the blanking area can maintain a continuous and stable contact state with the steam tubes, completely avoiding the phenomenon of materials colliding and bouncing in traditional equipment, greatly increasing the effective heat exchange time between the materials and the surface of the steam tubes, and the surface of the steam tubes is always evenly covered by the materials, maximizing the use of the heating area and greatly improving the drying efficiency;

[0023] 2. This equipment can achieve the uniform distribution and stable flow of materials in the blanking area. During the drying process, the materials fall evenly, forming a stable material curtain, ensuring that there is always an even material coverage around the steam tubes. This evenly distributed material flow increases the effective contact area between the materials and the steam tubes, systematically improving the heat conduction efficiency, and the even material distribution avoids the phenomena of local overheating or insufficient drying, ensuring the consistency of the material drying quality;

[0024] 3. The arc-shaped grooves on the outer wall of the fixed steam tubes in the aggregate area increase the heat exchange area with the materials. During the drying process of the materials in the aggregate area by the steam tubes in the aggregate area, the rotating feeding plate continuously transports the materials upward. The materials in the aggregate area move towards the notch of the fixed arc plate, and the materials continuously move and make full contact with the surface of the steam tubes, so that the drying of the materials in the aggregate area is more uniform;

[0025] 4. During the drying process of the materials, the baffle ring drives the dialing plate to rotate, and the dialing plate flips the materials between the baffle ring and the fixed circular plate, so that the drying of the materials in this area is more uniform. Description of the Drawings

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0027] Figure 1 It is a schematic structural diagram of the present invention;

[0028] Figure 2 It is a schematic structural diagram inside the rotary kiln body of the present invention;

[0029] Figure 3 It is a schematic layout diagram of the steam tubes of the present invention;

[0030] Figure 4 It is a schematic structural diagram of the steam tubes of the present invention;

[0031] Figure 5 It is a schematic structural diagram inside the arc-shaped sleeve of the present invention;

[0032] Figure 6 It is a schematic partial structural diagram of the arc-shaped sleeve of the present invention;

[0033] Figure 7 It is a schematic structural diagram of the fixed arc plate of the present invention;

[0034] Figure 8 It is a schematic structural diagram between the rotary kiln body and the fixed arc plate of the present invention;

[0035] Figure 9 It is a schematic structural diagram of the support frame of the present invention;

[0036] Figure 10 It is a schematic structural diagram of the end of the fixed circular plate of the present invention.

[0037] In the figure: 1-fixed seat; 2-support frame; 3-pipe box; 4-feed valve; 5-driven gear ring; 6-rotary kiln body; 7-rolling ring; 8-discharge valve; 9-limiting roller; 10-driving motor; 11-control gear; 12-steam tube; 13-fixed circular plate; 14-arc sleeve; 15-blocking ring; 16-material box; 17-displacing plate; 18-driving rod; 19-material guide assembly; 20-collecting plate; 21-displacing plate; 22-material guide plate; 2 3-connecting plate; 24-fixed arc plate; 25-leakage trough; 26-leakage hole; 27-arc trough; 28-air guide tube; 29-arc ventilation groove; 30-fixed baffle; 31-discharge trough; 32-material guide arc plate; 33-driving gear; 34-servo motor; 35-rotary joint; 36-reciprocating telescopic cylinder; 37-control board; 38-driven gear; 39-driving telescopic cylinder; 40-sliding L-shaped plate; 41-swinging plate; 42-support plate. DETAILED DESCRIPTION

[0038] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0039] like Figures 1 to 10 As shown, a steam tube rotary kiln dryer for preparing curd rubber comprises a fixed base 1, a support frame 2 is rotatably provided on the top of the fixed base 1, a rotary kiln body 6 and two fixed pipe boxes 3 are rotatably provided on the top of the support frame 2, the two ends of the rotary kiln body 6 are correspondingly connected to the two pipe boxes 3 for rotation, a fixed circular plate 13 is fixedly provided on the inner wall of the pipe box 3, a plurality of rows of steam tubes 12 are provided inside the rotary kiln body 6, the steam tubes 12 of two adjacent rows are staggered, a plurality of arc grooves 27 are provided on the outer wall of the steam tubes 12 along the circumferential direction, the two ends of the steam tubes 12 located in the blanking area are correspondingly connected to the two fixed circular plates 13 for rotation, and the outer wall is provided with a The arc-shaped sleeve 14 has two ends detachably connected to the two fixed circular plates 13, and the two ends of the steam tubes 12 located in the gathering area are fixedly connected to the two fixed circular plates 13. The top of the arc-shaped sleeve 14 is detachably provided with two gathering plates 20. The outer wall of the side of the arc-shaped sleeve 14 is provided with a discharge trough 31 and a detachably provided material guide arc plate 32. The lower outer wall of the arc-shaped sleeve 14 is fixedly connected to a fixed baffle 30. The inside of the arc-shaped sleeve 14 is provided with an arc-shaped ventilation groove 29. The arc-shaped ventilation groove 29 and the steam tubes 12 are both connected to the external steam system. The inner wall of the rotary kiln body 6 is provided with a material guide component 19 for lifting the material.

[0040] The material guide assembly 19 includes a fixed arc plate 24 fixedly connected to the fixed circular plate 13, and two material retaining rings 15 are fixedly connected to the inner wall of the rotary kiln body 6, which are in friction contact with the outer wall of the fixed arc plate 24. The inner wall of the rotary kiln body 6 is evenly distributed with a number of material guide plates 22 in friction contact with the outer wall of the fixed arc plate 24 along the circumferential direction. The two ends of the material guide plate 22 are in contact with the two material retaining rings 15 respectively. A material box 16 is fixedly connected to the inner wall of the fixed arc plate 24, and a material leakage groove 25 is penetrated by the position of the inner wall of the fixed arc plate 24 in the material box 16. A number of material leakage holes 26 are penetrated at the bottom of the material box 16. A drive rod 18 is provided for horizontal reciprocating movement in the material box 16, and a number of material shifting plates 17 are mounted on the outer wall of the drive rod 18.

[0041] A plurality of fixedly arranged shifting plates 21 are evenly distributed along the circumferential direction on the side wall of the retaining ring 15 , and both ends of the fixed arc-shaped plate 24 are fixedly connected to the two fixed circular plates 13 via a plurality of connecting plates 23 .

[0042] The outer walls of the two pipe boxes 3 are respectively fixed with a feed valve 4 and a discharge valve 8 that are connected.

[0043] A sliding L-shaped plate 40 is provided on the top of the fixed seat 1 for horizontal sliding. Several swing plates 41 are provided between the sliding L-shaped plate 40 and the support frame 2. The two ends of the swing plate 41 are rotatably connected to the support frame 2 and the sliding L-shaped plate 40 respectively. Two support plates 42 for supporting the support frame 2 are fixed on the top of the fixed seat 1.

[0044] Two driving telescopic cylinders 39 are fixedly provided on the top of the fixing base 1 , and the telescopic ends of the driving telescopic cylinders 39 are fixedly connected to the sliding L-shaped plate 40 .

[0045] Two rollers 7 are fixedly mounted on the outer wall of the rotary kiln body 6. A plurality of limiting rollers 9 are provided on the top of the support frame 2 to be in rolling connection with the rollers 7. The rollers 7 are confined within the limiting rollers 9. The pipe box 3 is fixedly connected to the support frame 2.

[0046] A driven gear ring 5 is fixedly mounted on the outer wall of the rotary kiln body 6 , a driving motor 10 is fixedly mounted on the top of the support frame 2 , and a control gear 11 meshing with the driven gear ring 5 is fixedly mounted on the output shaft of the driving motor 10 .

[0047] A number of rotary joints 35 are fixedly provided on the inner wall of the pipe box 3. Both ends of the steam tubes 12 located in the blanking area pass through the fixed circular plate 13 and are fixedly connected to the rotating ends of the rotary joints 35. The other ends of the rotary joints 35 are connected to the external steam system. Both ends of the steam tubes 12 located in the gathering area pass through the fixed circular plate 13 and the pipe box 3 and are connected to the external steam system. Two air guide pipes 28 connected to the arc-shaped ventilation groove 29 are fixedly provided on the outer wall of the arc sleeve 14. One end of the air guide pipe 28 passes through the fixed circular plate 13 and the pipe box 3 and is connected to the external steam system.

[0048] A driven gear 38 is fixedly sleeved on the outer wall of the steam tube bank 12 located in the blanking area. At the end of one of the fixed circular plates 13, a number of servo motors 34 are fixedly provided. The output shaft of the servo motor 34 is fixedly sleeved with a driving gear 33 that meshes with the driven gear 38.

[0049] A control board 37 is arranged inside one of the tube boxes 3. One end of the driving rod 18 passes through the material box 16 and the fixed circular plate 13 and is fixedly connected to the control board 37. Two reciprocating telescopic cylinders 36 are fixedly arranged on the inner wall of the tube box 3. The telescopic ends of the reciprocating telescopic cylinders 36 are fixedly connected to the control board 37.

[0050] Above line A is the blanking area, and below line A is the aggregate area.

[0051] The working principle of this device is as follows:

[0052] When drying the material, the hot steam provided by the external steam system passes through the steam tube bank 12 and the arc-shaped ventilation grooves 29 in the arc-shaped sleeve 14, and then continuously exchanges heat with the steam tube bank 12 and the arc-shaped sleeve 14. The driving motor 10 drives the rotary kiln body 6 to rotate, and then drives the guide plate 22 and the baffle ring 15 to rotate. When the guide plate 22 passes through the opening area of the fixed arc plate 24, the material in the aggregate area fills the area between two adjacent guide plates 22. When the guide plate 22 rotates upward, it transports the material. When the material is transported to the highest position, it enters the material box 16 through the leakage trough 25. At the same time, the reciprocating telescopic cylinder 36 drives the dialing plate 17 to reciprocate, and then stirs the material in the material box 16, so that the material is evenly distributed in the material box 16. The material in the material box 16 uniformly falls downward through the leakage holes 26 and is collected by the uppermost row of aggregate plates 20. The servo motor 34 drives the steam tube bank 12 in the blanking area to rotate. During the rotation of the steam tube bank 12, the material between the aggregate plates 20 continuously fills into the arc-shaped groove 27. The material in the arc-shaped groove 27 rotates with the steam tube bank 12, and the material continuously exchanges heat with the steam tube bank 12 and the arc-shaped sleeve 14 during the rotation. When it rotates to the discharge chute 31, the material is discharged. During the process of discharging the material through the guide arc plate 32, the outer wall of the arc-shaped sleeve 14 continuously exchanges heat with the material. After the material completes heat exchange with the first row of steam tube banks 12, it falls downward and enters the second row of steam tube banks 12 for heat exchange, and so on. After the material completes heat exchange with the last row of steam tube banks 12, it falls back to the aggregate area again. During the drying process of the material by this equipment, the material falling in the blanking area can maintain a continuous and stable contact state with the steam tube bank 12, completely avoiding the phenomenon of the material colliding and bouncing in the traditional equipment, greatly increasing the effective heat exchange time between the material and the surface of the steam tube bank 12, and the surface of the steam tube bank 12 is always evenly covered by the material, maximizing the use of the heating area and greatly improving the drying efficiency;

[0053] The equipment can achieve uniform distribution and stable flow of materials in the material drop zone. During the drying process, the materials fall evenly to form a stable material curtain, ensuring that the steam tubes 12 are always evenly covered with materials. This evenly distributed material flow increases the effective contact area between the materials and the steam tubes 12, thereby systematically improving the heat transfer efficiency. In addition, the even material distribution avoids local overheating or insufficient drying, ensuring the consistency of material drying quality.

[0054] The arc-shaped grooves 27 on the outer walls of the fixed steam tubes 12 in the gathering area increase the heat exchange area with the material. During the process of the steam tubes 12 in the gathering area drying the material in the gathering area, the rotating guide plates 22 continuously transport the material upward, and the material in the gathering area moves toward the notch of the fixed arc plate 24. The material continues to move and fully contacts the surface of the steam tubes 12, thereby making the material in the gathering area dry more evenly.

[0055] During the material drying process, the retaining ring 15 drives the toggle plate 21 to rotate, and the toggle plate 21 turns the material between the retaining ring 15 and the fixed circular plate 13, thereby making the material in this area dry more evenly;

[0056] After the material is dried, the telescopic cylinder 39 is driven to slide the sliding L-shaped plate 40, and the support frame 2 rotates upward to lift the feed end of the equipment. The limiting support wheel 9 restricts the roller 7 to prevent it from axial sliding, and the discharge valve 8 is opened. At the same time, the rotary kiln body 6 continues to rotate, and the material in the rotary kiln body 6 is discharged through the discharge valve 8. After the material is discharged, the material to be dried is added through the feed valve 4.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A steam tube rotary kiln dryer for curdlan preparation, characterized in that: The invention comprises a fixed seat (1), a support frame (2) is rotatably provided on the top of the fixed seat (1), a rotary kiln body (6) and two fixed pipe boxes (3) are rotatably provided on the top of the support frame (2), the two ends of the rotary kiln body (6) are correspondingly connected to the two pipe boxes (3), the inner wall of the pipe box (3) is fixedly provided with a fixed circular plate (13), a plurality of rows of steam tubes (12) are provided inside the rotary kiln body (6), the steam tubes (12) of two adjacent rows are staggered, the outer wall of the steam tubes (12) is provided with a plurality of arc grooves (27) along the circumferential direction, the two ends of the steam tubes (12) located in the blanking area are correspondingly connected to the two fixed circular plates (13), and the outer wall thereof is provided with an arc sleeve (14), the arc The two ends of the sleeve (14) are detachably connected to the two fixed circular plates (13), and the two ends of the steam tubes (12) located in the material collection area are fixedly connected to the two fixed circular plates (13). The top of the arc sleeve (14) is detachably provided with two material collection plates (20). The side outer wall of the arc sleeve (14) is provided with a discharge trough (31) and a detachably provided material guide arc plate (32). The lower outer wall of the arc sleeve (14) is fixedly connected with a fixed baffle (30). The interior of the arc sleeve (14) is provided with an arc vent groove (29). The arc vent groove (29) and the steam tubes (12) are both connected to the external steam system. The inner wall of the rotary kiln body (6) is provided with a material guide component (19) for lifting the material.

2. The steam tube rotary kiln dryer for curdlan preparation according to claim 1, wherein: The material guide assembly (19) includes a fixed arc plate (24) fixedly connected to the fixed circular plate (13), two material retaining rings (15) are fixedly connected to the inner wall of the rotary kiln body (6) and are in frictional contact with the outer wall of the fixed arc plate (24), and a plurality of material guide plates (22) are evenly distributed along the circumferential direction on the inner wall of the rotary kiln body (6) and are in frictional contact with the outer wall of the fixed arc plate (24), and the two ends of the material guide plates (22) are in contact with the two material retaining rings (15) respectively, and a material box (16) is fixedly connected to the inner wall of the fixed arc plate (24), and a material leakage groove (25) is provided through the position of the inner wall of the fixed arc plate (24) located in the material box (16), and a plurality of material leakage holes (26) are provided through the bottom of the material box (16), and a driving rod (18) is provided in the material box (16) for horizontal reciprocating movement, and a plurality of material shifting plates (17) are sleeved on the outer wall of the driving rod (18).

3. The steam tube rotary kiln dryer for curdlan preparation according to claim 2, wherein: The side wall of the retaining ring (15) is uniformly distributed with a plurality of fixedly arranged toggle plates (21) along the circumferential direction, and both ends of the fixed arc-shaped plate (24) are fixedly connected to the two fixed circular plates (13) via a plurality of connecting plates (23).

4. The steam tube rotary kiln dryer for curdlan preparation according to claim 1, wherein: A feed valve (4) and a discharge valve (8) are fixedly provided on the outer walls of the two pipe boxes (3) and are connected to each other.

5. A steam tube rotary kiln dryer for curdlan preparation according to claim 1, characterized in that: A sliding L-shaped plate (40) is horizontally slidably arranged on the top of the fixed seat (1). A plurality of swing plates (41) are arranged between the sliding L-shaped plate (40) and the support frame (2). The two ends of the swing plate (41) are respectively rotatably connected to the support frame (2) and the sliding L-shaped plate (40). Two support plates (42) for supporting the support frame (2) are fixedly arranged on the top of the fixed seat (1). Two driving telescopic cylinders (39) are fixedly arranged on the top of the fixed seat (1). The telescopic end of the driving telescopic cylinder (39) is fixedly connected to the sliding L-shaped plate (40).

6. The steam tube rotary kiln dryer for curdlan preparation according to claim 1, wherein: Two girth gears (7) are fixedly sleeved on the outer wall of the rotary kiln body (6). A plurality of limiting supporting rollers (9) which are in rolling connection with the girth gears (7) are arranged on the top of the support frame (2). The girth gears (7) are restricted within the limiting supporting rollers (9). The tube box (3) is fixedly connected to the support frame (2).

7. The steam tube rotary kiln dryer for curdlan preparation according to claim 6, wherein: A driven gear ring (5) is fixedly sleeved on the outer wall of the rotary kiln body (6). A driving motor (10) is fixedly arranged on the top of the support frame (2). A control gear (11) which is meshed with the driven gear ring (5) is fixedly sleeved on the output shaft of the driving motor (10).

8. The steam tube rotary kiln dryer for curdlan preparation according to claim 1, characterized in that: A plurality of rotary joints (35) are fixedly arranged on the inner wall of the tube box (3). Both ends of the steam tubes (12) located in the feeding area penetrate through the fixed circular plate (13) and are fixedly connected to the rotating ends of the rotary joints (35). The other ends of the rotary joints (35) are communicated with the external steam system. Both ends of the steam tubes (12) located in the aggregate area pass through the fixed circular plate (13) and the tube box (3) and are communicated with the external steam system. Two air guide pipes (28) which are communicated with the arc-shaped ventilation grooves (29) are fixedly arranged on the outer wall of the arc-shaped sleeve (14). One end of the air guide pipe (28) passes through the fixed circular plate (13) and the tube box (3) and is communicated with the external steam system.

9. A steam tube rotary kiln dryer for curdlan preparation according to claim 8, characterized in that: A driven gear (38) is fixedly sleeved on the outer wall of the steam tubes (12) located in the feeding area. A plurality of servo motors (34) are fixedly arranged at the end of one of the fixed circular plates (13). A driving gear (33) which is meshed with the driven gear (38) is fixedly sleeved on the output shaft of the servo motor (34).

10. The steam tube rotary kiln dryer for curdlan preparation according to claim 2, characterized in that: A control board (37) is arranged inside one of the tube boxes (3). One end of the driving rod (18) passes through the material box (16) and the fixed circular plate (13) and is fixedly connected to the control board (37). Two reciprocating telescopic cylinders (36) are fixedly arranged on the inner wall of the tube box (3). The telescopic ends of the reciprocating telescopic cylinders (36) are fixedly connected to the control board (37).

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